Commit | Line | Data |
---|---|---|
9888c340 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
6cbd5570 CM |
2 | /* |
3 | * Copyright (C) 2007 Oracle. All rights reserved. | |
6cbd5570 CM |
4 | */ |
5 | ||
9888c340 DS |
6 | #ifndef BTRFS_CTREE_H |
7 | #define BTRFS_CTREE_H | |
eb60ceac | 8 | |
810191ff | 9 | #include <linux/mm.h> |
174cd4b1 | 10 | #include <linux/sched/signal.h> |
810191ff | 11 | #include <linux/highmem.h> |
e20d96d6 | 12 | #include <linux/fs.h> |
a2de733c | 13 | #include <linux/rwsem.h> |
803b2f54 | 14 | #include <linux/semaphore.h> |
58176a96 | 15 | #include <linux/completion.h> |
04160088 | 16 | #include <linux/backing-dev.h> |
e6dcd2dc | 17 | #include <linux/wait.h> |
5a0e3ad6 | 18 | #include <linux/slab.h> |
1abe9b8a | 19 | #include <trace/events/btrfs.h> |
65019df8 | 20 | #include <asm/unaligned.h> |
3b16a4e3 | 21 | #include <linux/pagemap.h> |
55e301fd | 22 | #include <linux/btrfs.h> |
db671160 | 23 | #include <linux/btrfs_tree.h> |
21c7e756 | 24 | #include <linux/workqueue.h> |
f667aef6 | 25 | #include <linux/security.h> |
ee22184b | 26 | #include <linux/sizes.h> |
897a41b1 | 27 | #include <linux/dynamic_debug.h> |
1e4f4714 | 28 | #include <linux/refcount.h> |
9678c543 | 29 | #include <linux/crc32c.h> |
4e4cabec | 30 | #include <linux/iomap.h> |
9c7d3a54 | 31 | #include "extent-io-tree.h" |
d1310b2e | 32 | #include "extent_io.h" |
5f39d397 | 33 | #include "extent_map.h" |
8b712842 | 34 | #include "async-thread.h" |
d12ffdd1 | 35 | #include "block-rsv.h" |
2992df73 | 36 | #include "locking.h" |
e20d96d6 | 37 | |
e089f05c | 38 | struct btrfs_trans_handle; |
79154b1b | 39 | struct btrfs_transaction; |
a22285a6 | 40 | struct btrfs_pending_snapshot; |
31890da0 | 41 | struct btrfs_delayed_ref_root; |
8719aaae | 42 | struct btrfs_space_info; |
32da5386 | 43 | struct btrfs_block_group; |
35b7e476 | 44 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
35b7e476 | 45 | extern struct kmem_cache *btrfs_bit_radix_cachep; |
2c90e5d6 | 46 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 47 | extern struct kmem_cache *btrfs_free_space_cachep; |
3acd4850 | 48 | extern struct kmem_cache *btrfs_free_space_bitmap_cachep; |
e6dcd2dc | 49 | struct btrfs_ordered_sum; |
82fa113f | 50 | struct btrfs_ref; |
c3a3b19b | 51 | struct btrfs_bio; |
1881fba8 | 52 | struct btrfs_ioctl_encoded_io_args; |
e089f05c | 53 | |
cdb4c574 | 54 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 55 | |
71a9c488 DS |
56 | /* |
57 | * Maximum number of mirrors that can be available for all profiles counting | |
58 | * the target device of dev-replace as one. During an active device replace | |
59 | * procedure, the target device of the copy operation is a mirror for the | |
60 | * filesystem data as well that can be used to read data in order to repair | |
61 | * read errors on other disks. | |
62 | * | |
8d6fac00 | 63 | * Current value is derived from RAID1C4 with 4 copies. |
71a9c488 | 64 | */ |
8d6fac00 | 65 | #define BTRFS_MAX_MIRRORS (4 + 1) |
94598ba8 | 66 | |
4008c04a | 67 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 68 | |
7c829b72 AJ |
69 | #define BTRFS_OLDEST_GENERATION 0ULL |
70 | ||
e20d96d6 CM |
71 | /* |
72 | * we can actually store much bigger names, but lets not confuse the rest | |
73 | * of linux | |
74 | */ | |
75 | #define BTRFS_NAME_LEN 255 | |
76 | ||
f186373f MF |
77 | /* |
78 | * Theoretical limit is larger, but we keep this down to a sane | |
79 | * value. That should limit greatly the possibility of collisions on | |
80 | * inode ref items. | |
81 | */ | |
82 | #define BTRFS_LINK_MAX 65535U | |
83 | ||
3954401f | 84 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 85 | |
3d136a11 SB |
86 | /* ioprio of readahead is set to idle */ |
87 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
88 | ||
ee22184b | 89 | #define BTRFS_DIRTY_METADATA_THRESH SZ_32M |
e2d84521 | 90 | |
dec59fa3 EL |
91 | /* |
92 | * Use large batch size to reduce overhead of metadata updates. On the reader | |
93 | * side, we only read it when we are close to ENOSPC and the read overhead is | |
94 | * mostly related to the number of CPUs, so it is OK to use arbitrary large | |
95 | * value here. | |
96 | */ | |
97 | #define BTRFS_TOTAL_BYTES_PINNED_BATCH SZ_128M | |
98 | ||
ee22184b | 99 | #define BTRFS_MAX_EXTENT_SIZE SZ_128M |
dcab6a3b | 100 | |
dfb79ddb DZ |
101 | /* |
102 | * Deltas are an effective way to populate global statistics. Give macro names | |
103 | * to make it clear what we're doing. An example is discard_extents in | |
104 | * btrfs_free_space_ctl. | |
105 | */ | |
106 | #define BTRFS_STAT_NR_ENTRIES 2 | |
107 | #define BTRFS_STAT_CURR 0 | |
108 | #define BTRFS_STAT_PREV 1 | |
9678c543 | 109 | |
0b86a832 CM |
110 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
111 | { | |
112 | BUG_ON(num_stripes == 0); | |
113 | return sizeof(struct btrfs_chunk) + | |
114 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
115 | } | |
116 | ||
acce952b | 117 | /* |
b00146b5 | 118 | * Runtime (in-memory) states of filesystem |
acce952b | 119 | */ |
b00146b5 DS |
120 | enum { |
121 | /* Global indicator of serious filesystem errors */ | |
122 | BTRFS_FS_STATE_ERROR, | |
123 | /* | |
124 | * Filesystem is being remounted, allow to skip some operations, like | |
125 | * defrag | |
126 | */ | |
127 | BTRFS_FS_STATE_REMOUNTING, | |
a0a1db70 FM |
128 | /* Filesystem in RO mode */ |
129 | BTRFS_FS_STATE_RO, | |
b00146b5 DS |
130 | /* Track if a transaction abort has been reported on this filesystem */ |
131 | BTRFS_FS_STATE_TRANS_ABORTED, | |
132 | /* | |
133 | * Bio operations should be blocked on this filesystem because a source | |
134 | * or target device is being destroyed as part of a device replace | |
135 | */ | |
136 | BTRFS_FS_STATE_DEV_REPLACING, | |
137 | /* The btrfs_fs_info created for self-tests */ | |
138 | BTRFS_FS_STATE_DUMMY_FS_INFO, | |
056c8311 JB |
139 | |
140 | BTRFS_FS_STATE_NO_CSUMS, | |
40cdc509 FM |
141 | |
142 | /* Indicates there was an error cleaning up a log tree. */ | |
143 | BTRFS_FS_STATE_LOG_CLEANUP_ERROR, | |
c067da87 STD |
144 | |
145 | BTRFS_FS_STATE_COUNT | |
b00146b5 | 146 | }; |
acce952b | 147 | |
5d4f98a2 YZ |
148 | #define BTRFS_BACKREF_REV_MAX 256 |
149 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
150 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
151 | BTRFS_BACKREF_REV_SHIFT) | |
152 | ||
153 | #define BTRFS_OLD_BACKREF_REV 0 | |
154 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 155 | |
fec577fb CM |
156 | /* |
157 | * every tree block (leaf or node) starts with this header. | |
158 | */ | |
bb492bb0 | 159 | struct btrfs_header { |
e17cade2 | 160 | /* these first four must match the super block */ |
f254e52c | 161 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 162 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 163 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 164 | __le64 flags; |
e17cade2 CM |
165 | |
166 | /* allowed to be different from the super from here on down */ | |
167 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 168 | __le64 generation; |
4d775673 | 169 | __le64 owner; |
5f39d397 | 170 | __le32 nritems; |
9a6f11ed | 171 | u8 level; |
eb60ceac CM |
172 | } __attribute__ ((__packed__)); |
173 | ||
0b86a832 CM |
174 | /* |
175 | * this is a very generous portion of the super block, giving us | |
176 | * room to translate 14 chunks with 3 stripes each. | |
177 | */ | |
178 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
179 | ||
af31f5e5 CM |
180 | /* |
181 | * just in case we somehow lose the roots and are not able to mount, | |
182 | * we store an array of the roots from previous transactions | |
183 | * in the super. | |
184 | */ | |
185 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
186 | struct btrfs_root_backup { | |
187 | __le64 tree_root; | |
188 | __le64 tree_root_gen; | |
189 | ||
190 | __le64 chunk_root; | |
191 | __le64 chunk_root_gen; | |
192 | ||
193 | __le64 extent_root; | |
194 | __le64 extent_root_gen; | |
195 | ||
196 | __le64 fs_root; | |
197 | __le64 fs_root_gen; | |
198 | ||
199 | __le64 dev_root; | |
200 | __le64 dev_root_gen; | |
201 | ||
202 | __le64 csum_root; | |
203 | __le64 csum_root_gen; | |
204 | ||
205 | __le64 total_bytes; | |
206 | __le64 bytes_used; | |
207 | __le64 num_devices; | |
208 | /* future */ | |
d1423248 | 209 | __le64 unused_64[4]; |
af31f5e5 CM |
210 | |
211 | u8 tree_root_level; | |
212 | u8 chunk_root_level; | |
213 | u8 extent_root_level; | |
214 | u8 fs_root_level; | |
215 | u8 dev_root_level; | |
216 | u8 csum_root_level; | |
217 | /* future and to align */ | |
218 | u8 unused_8[10]; | |
219 | } __attribute__ ((__packed__)); | |
220 | ||
38732474 QW |
221 | #define BTRFS_SUPER_INFO_OFFSET SZ_64K |
222 | #define BTRFS_SUPER_INFO_SIZE 4096 | |
223 | ||
37f85ec3 QW |
224 | /* |
225 | * The reserved space at the beginning of each device. | |
226 | * It covers the primary super block and leaves space for potential use by other | |
227 | * tools like bootloaders or to lower potential damage of accidental overwrite. | |
228 | */ | |
229 | #define BTRFS_DEVICE_RANGE_RESERVED (SZ_1M) | |
230 | ||
fec577fb CM |
231 | /* |
232 | * the super block basically lists the main trees of the FS | |
233 | * it currently lacks any block count etc etc | |
234 | */ | |
234b63a0 | 235 | struct btrfs_super_block { |
63b10fc4 | 236 | /* the first 4 fields must match struct btrfs_header */ |
7239ff4b NB |
237 | u8 csum[BTRFS_CSUM_SIZE]; |
238 | /* FS specific UUID, visible to user */ | |
239 | u8 fsid[BTRFS_FSID_SIZE]; | |
db94535d | 240 | __le64 bytenr; /* this block number */ |
63b10fc4 | 241 | __le64 flags; |
e17cade2 CM |
242 | |
243 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 244 | __le64 magic; |
3768f368 CM |
245 | __le64 generation; |
246 | __le64 root; | |
0b86a832 | 247 | __le64 chunk_root; |
e02119d5 | 248 | __le64 log_root; |
c3027eb5 | 249 | |
97f09d55 QW |
250 | /* |
251 | * This member has never been utilized since the very beginning, thus | |
252 | * it's always 0 regardless of kernel version. We always use | |
253 | * generation + 1 to read log tree root. So here we mark it deprecated. | |
254 | */ | |
255 | __le64 __unused_log_root_transid; | |
db94535d CM |
256 | __le64 total_bytes; |
257 | __le64 bytes_used; | |
2e635a27 | 258 | __le64 root_dir_objectid; |
8a4b83cc | 259 | __le64 num_devices; |
5f39d397 CM |
260 | __le32 sectorsize; |
261 | __le32 nodesize; | |
707e8a07 | 262 | __le32 __unused_leafsize; |
87ee04eb | 263 | __le32 stripesize; |
0b86a832 | 264 | __le32 sys_chunk_array_size; |
84234f3a | 265 | __le64 chunk_root_generation; |
f2b636e8 JB |
266 | __le64 compat_flags; |
267 | __le64 compat_ro_flags; | |
268 | __le64 incompat_flags; | |
607d432d | 269 | __le16 csum_type; |
db94535d | 270 | u8 root_level; |
0b86a832 | 271 | u8 chunk_root_level; |
e02119d5 | 272 | u8 log_root_level; |
0d81ba5d | 273 | struct btrfs_dev_item dev_item; |
c3027eb5 | 274 | |
7ae9c09d | 275 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 276 | |
0af3d00b | 277 | __le64 cache_generation; |
26432799 | 278 | __le64 uuid_tree_generation; |
0af3d00b | 279 | |
7239ff4b NB |
280 | /* the UUID written into btree blocks */ |
281 | u8 metadata_uuid[BTRFS_FSID_SIZE]; | |
282 | ||
9c54e80d JB |
283 | /* Extent tree v2 */ |
284 | __le64 block_group_root; | |
285 | __le64 block_group_root_generation; | |
286 | u8 block_group_root_level; | |
287 | ||
c3027eb5 | 288 | /* future expansion */ |
9c54e80d JB |
289 | u8 reserved8[7]; |
290 | __le64 reserved[25]; | |
0b86a832 | 291 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 292 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
38732474 QW |
293 | |
294 | /* Padded to 4096 bytes */ | |
295 | u8 padding[565]; | |
cfaa7295 | 296 | } __attribute__ ((__packed__)); |
38732474 | 297 | static_assert(sizeof(struct btrfs_super_block) == BTRFS_SUPER_INFO_SIZE); |
cfaa7295 | 298 | |
f2b636e8 JB |
299 | /* |
300 | * Compat flags that we support. If any incompat flags are set other than the | |
301 | * ones specified below then we will fail to mount | |
302 | */ | |
5d4f98a2 | 303 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
304 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
305 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
70f6d82e OS |
306 | |
307 | #define BTRFS_FEATURE_COMPAT_RO_SUPP \ | |
6675df31 | 308 | (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE | \ |
14605409 BB |
309 | BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID | \ |
310 | BTRFS_FEATURE_COMPAT_RO_VERITY) | |
70f6d82e | 311 | |
2eaa055f JM |
312 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
313 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL | |
314 | ||
2c7d2a23 JB |
315 | #ifdef CONFIG_BTRFS_DEBUG |
316 | /* | |
317 | * Extent tree v2 supported only with CONFIG_BTRFS_DEBUG | |
318 | */ | |
319 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ | |
320 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
321 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ | |
322 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ | |
323 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ | |
324 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ | |
325 | BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD | \ | |
326 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ | |
327 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ | |
328 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ | |
329 | BTRFS_FEATURE_INCOMPAT_NO_HOLES | \ | |
330 | BTRFS_FEATURE_INCOMPAT_METADATA_UUID | \ | |
331 | BTRFS_FEATURE_INCOMPAT_RAID1C34 | \ | |
332 | BTRFS_FEATURE_INCOMPAT_ZONED | \ | |
333 | BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2) | |
334 | #else | |
0af3d00b JB |
335 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
336 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 337 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 338 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 339 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 340 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
5c1aab1d | 341 | BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD | \ |
53b381b3 | 342 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
3173a18f | 343 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
16e7549f | 344 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
7239ff4b | 345 | BTRFS_FEATURE_INCOMPAT_NO_HOLES | \ |
cfbb825c | 346 | BTRFS_FEATURE_INCOMPAT_METADATA_UUID | \ |
9d294a68 NA |
347 | BTRFS_FEATURE_INCOMPAT_RAID1C34 | \ |
348 | BTRFS_FEATURE_INCOMPAT_ZONED) | |
2c7d2a23 | 349 | #endif |
f2b636e8 | 350 | |
2eaa055f JM |
351 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
352 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
353 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL | |
f2b636e8 | 354 | |
fec577fb | 355 | /* |
62e2749e | 356 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
357 | * the item in the leaf (relative to the start of the data area) |
358 | */ | |
0783fcfc | 359 | struct btrfs_item { |
e2fa7227 | 360 | struct btrfs_disk_key key; |
123abc88 | 361 | __le32 offset; |
5f39d397 | 362 | __le32 size; |
eb60ceac CM |
363 | } __attribute__ ((__packed__)); |
364 | ||
fec577fb CM |
365 | /* |
366 | * leaves have an item area and a data area: | |
367 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
368 | * | |
369 | * The data is separate from the items to get the keys closer together | |
370 | * during searches. | |
371 | */ | |
234b63a0 | 372 | struct btrfs_leaf { |
bb492bb0 | 373 | struct btrfs_header header; |
123abc88 | 374 | struct btrfs_item items[]; |
eb60ceac CM |
375 | } __attribute__ ((__packed__)); |
376 | ||
fec577fb CM |
377 | /* |
378 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
379 | * other blocks | |
380 | */ | |
123abc88 CM |
381 | struct btrfs_key_ptr { |
382 | struct btrfs_disk_key key; | |
383 | __le64 blockptr; | |
74493f7a | 384 | __le64 generation; |
123abc88 CM |
385 | } __attribute__ ((__packed__)); |
386 | ||
234b63a0 | 387 | struct btrfs_node { |
bb492bb0 | 388 | struct btrfs_header header; |
123abc88 | 389 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
390 | } __attribute__ ((__packed__)); |
391 | ||
ace75066 FM |
392 | /* Read ahead values for struct btrfs_path.reada */ |
393 | enum { | |
394 | READA_NONE, | |
395 | READA_BACK, | |
396 | READA_FORWARD, | |
397 | /* | |
398 | * Similar to READA_FORWARD but unlike it: | |
399 | * | |
400 | * 1) It will trigger readahead even for leaves that are not close to | |
401 | * each other on disk; | |
402 | * 2) It also triggers readahead for nodes; | |
403 | * 3) During a search, even when a node or leaf is already in memory, it | |
404 | * will still trigger readahead for other nodes and leaves that follow | |
405 | * it. | |
406 | * | |
407 | * This is meant to be used only when we know we are iterating over the | |
408 | * entire tree or a very large part of it. | |
409 | */ | |
410 | READA_FORWARD_ALWAYS, | |
411 | }; | |
412 | ||
fec577fb | 413 | /* |
234b63a0 CM |
414 | * btrfs_paths remember the path taken from the root down to the leaf. |
415 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
416 | * to any other levels that are present. |
417 | * | |
418 | * The slots array records the index of the item or block pointer | |
419 | * used while walking the tree. | |
420 | */ | |
234b63a0 | 421 | struct btrfs_path { |
5f39d397 | 422 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 423 | int slots[BTRFS_MAX_LEVEL]; |
925baedd | 424 | /* if there is real range locking, this locks field will change */ |
4fb72bf2 | 425 | u8 locks[BTRFS_MAX_LEVEL]; |
dccabfad | 426 | u8 reada; |
925baedd | 427 | /* keep some upper locks as we walk down */ |
7853f15b | 428 | u8 lowest_level; |
459931ec CM |
429 | |
430 | /* | |
431 | * set by btrfs_split_item, tells search_slot to keep all locks | |
432 | * and to force calls to keep space in the nodes | |
433 | */ | |
b9473439 CM |
434 | unsigned int search_for_split:1; |
435 | unsigned int keep_locks:1; | |
436 | unsigned int skip_locking:1; | |
5d4f98a2 | 437 | unsigned int search_commit_root:1; |
3f8a18cc | 438 | unsigned int need_commit_sem:1; |
5f5bc6b1 | 439 | unsigned int skip_release_on_error:1; |
9a664971 | 440 | /* |
441 | * Indicate that new item (btrfs_search_slot) is extending already | |
442 | * existing item and ins_len contains only the data size and not item | |
443 | * header (ie. sizeof(struct btrfs_item) is not included). | |
444 | */ | |
445 | unsigned int search_for_extension:1; | |
eb60ceac | 446 | }; |
da17066c | 447 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \ |
5d4f98a2 | 448 | sizeof(struct btrfs_item)) |
e922e087 SB |
449 | struct btrfs_dev_replace { |
450 | u64 replace_state; /* see #define above */ | |
a944442c AP |
451 | time64_t time_started; /* seconds since 1-Jan-1970 */ |
452 | time64_t time_stopped; /* seconds since 1-Jan-1970 */ | |
e922e087 SB |
453 | atomic64_t num_write_errors; |
454 | atomic64_t num_uncorrectable_read_errors; | |
455 | ||
456 | u64 cursor_left; | |
457 | u64 committed_cursor_left; | |
458 | u64 cursor_left_last_write_of_item; | |
459 | u64 cursor_right; | |
460 | ||
461 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
462 | ||
463 | int is_valid; | |
464 | int item_needs_writeback; | |
465 | struct btrfs_device *srcdev; | |
466 | struct btrfs_device *tgtdev; | |
467 | ||
e922e087 | 468 | struct mutex lock_finishing_cancel_unmount; |
129827e3 | 469 | struct rw_semaphore rwsem; |
e922e087 SB |
470 | |
471 | struct btrfs_scrub_progress scrub_progress; | |
7f8d236a DS |
472 | |
473 | struct percpu_counter bio_counter; | |
474 | wait_queue_head_t replace_wait; | |
e922e087 SB |
475 | }; |
476 | ||
fa9c0d79 CM |
477 | /* |
478 | * free clusters are used to claim free space in relatively large chunks, | |
583b7231 HK |
479 | * allowing us to do less seeky writes. They are used for all metadata |
480 | * allocations. In ssd_spread mode they are also used for data allocations. | |
fa9c0d79 CM |
481 | */ |
482 | struct btrfs_free_cluster { | |
483 | spinlock_t lock; | |
484 | spinlock_t refill_lock; | |
485 | struct rb_root root; | |
486 | ||
487 | /* largest extent in this cluster */ | |
488 | u64 max_size; | |
489 | ||
490 | /* first extent starting offset */ | |
491 | u64 window_start; | |
492 | ||
c759c4e1 JB |
493 | /* We did a full search and couldn't create a cluster */ |
494 | bool fragmented; | |
495 | ||
32da5386 | 496 | struct btrfs_block_group *block_group; |
fa9c0d79 CM |
497 | /* |
498 | * when a cluster is allocated from a block group, we put the | |
499 | * cluster onto a list in the block group so that it can | |
500 | * be freed before the block group is freed. | |
501 | */ | |
502 | struct list_head block_group_list; | |
6324fbf3 CM |
503 | }; |
504 | ||
817d52f8 | 505 | enum btrfs_caching_type { |
bbe339cc DS |
506 | BTRFS_CACHE_NO, |
507 | BTRFS_CACHE_STARTED, | |
bbe339cc DS |
508 | BTRFS_CACHE_FINISHED, |
509 | BTRFS_CACHE_ERROR, | |
817d52f8 JB |
510 | }; |
511 | ||
0966a7b1 QW |
512 | /* |
513 | * Tree to record all locked full stripes of a RAID5/6 block group | |
514 | */ | |
515 | struct btrfs_full_stripe_locks_tree { | |
516 | struct rb_root root; | |
517 | struct mutex lock; | |
518 | }; | |
519 | ||
b0643e59 DZ |
520 | /* Discard control. */ |
521 | /* | |
522 | * Async discard uses multiple lists to differentiate the discard filter | |
6e80d4f8 DZ |
523 | * parameters. Index 0 is for completely free block groups where we need to |
524 | * ensure the entire block group is trimmed without being lossy. Indices | |
525 | * afterwards represent monotonically decreasing discard filter sizes to | |
526 | * prioritize what should be discarded next. | |
b0643e59 | 527 | */ |
7fe6d45e | 528 | #define BTRFS_NR_DISCARD_LISTS 3 |
6e80d4f8 DZ |
529 | #define BTRFS_DISCARD_INDEX_UNUSED 0 |
530 | #define BTRFS_DISCARD_INDEX_START 1 | |
b0643e59 DZ |
531 | |
532 | struct btrfs_discard_ctl { | |
533 | struct workqueue_struct *discard_workers; | |
534 | struct delayed_work work; | |
535 | spinlock_t lock; | |
536 | struct btrfs_block_group *block_group; | |
537 | struct list_head discard_list[BTRFS_NR_DISCARD_LISTS]; | |
e93591bb | 538 | u64 prev_discard; |
df903e5d | 539 | u64 prev_discard_time; |
dfb79ddb | 540 | atomic_t discardable_extents; |
5dc7c10b | 541 | atomic64_t discardable_bytes; |
19b2a2c7 | 542 | u64 max_discard_size; |
6e88f116 | 543 | u64 delay_ms; |
a2309300 | 544 | u32 iops_limit; |
e93591bb | 545 | u32 kbps_limit; |
9ddf648f DZ |
546 | u64 discard_extent_bytes; |
547 | u64 discard_bitmap_bytes; | |
548 | atomic64_t discard_bytes_saved; | |
b0643e59 DZ |
549 | }; |
550 | ||
57056740 | 551 | void btrfs_init_async_reclaim_work(struct btrfs_fs_info *fs_info); |
21c7e756 | 552 | |
097b8a7c | 553 | /* fs_info */ |
5d4f98a2 | 554 | struct reloc_control; |
0b86a832 | 555 | struct btrfs_device; |
8a4b83cc | 556 | struct btrfs_fs_devices; |
c9e9f97b | 557 | struct btrfs_balance_control; |
16cdcec7 | 558 | struct btrfs_delayed_root; |
afcdd129 | 559 | |
eede2bf3 OS |
560 | /* |
561 | * Block group or device which contains an active swapfile. Used for preventing | |
562 | * unsafe operations while a swapfile is active. | |
563 | * | |
564 | * These are sorted on (ptr, inode) (note that a block group or device can | |
565 | * contain more than one swapfile). We compare the pointer values because we | |
566 | * don't actually care what the object is, we just need a quick check whether | |
567 | * the object exists in the rbtree. | |
568 | */ | |
569 | struct btrfs_swapfile_pin { | |
570 | struct rb_node node; | |
571 | void *ptr; | |
572 | struct inode *inode; | |
573 | /* | |
32da5386 DS |
574 | * If true, ptr points to a struct btrfs_block_group. Otherwise, ptr |
575 | * points to a struct btrfs_device. | |
eede2bf3 OS |
576 | */ |
577 | bool is_block_group; | |
195a49ea FM |
578 | /* |
579 | * Only used when 'is_block_group' is true and it is the number of | |
580 | * extents used by a swapfile for this block group ('ptr' field). | |
581 | */ | |
582 | int bg_extent_count; | |
eede2bf3 OS |
583 | }; |
584 | ||
585 | bool btrfs_pinned_by_swapfile(struct btrfs_fs_info *fs_info, void *ptr); | |
586 | ||
eb1a524c | 587 | enum { |
eb1a524c DS |
588 | BTRFS_FS_CLOSING_START, |
589 | BTRFS_FS_CLOSING_DONE, | |
590 | BTRFS_FS_LOG_RECOVERING, | |
591 | BTRFS_FS_OPEN, | |
592 | BTRFS_FS_QUOTA_ENABLED, | |
593 | BTRFS_FS_UPDATE_UUID_TREE_GEN, | |
594 | BTRFS_FS_CREATING_FREE_SPACE_TREE, | |
595 | BTRFS_FS_BTREE_ERR, | |
596 | BTRFS_FS_LOG1_ERR, | |
597 | BTRFS_FS_LOG2_ERR, | |
598 | BTRFS_FS_QUOTA_OVERRIDE, | |
599 | /* Used to record internally whether fs has been frozen */ | |
600 | BTRFS_FS_FROZEN, | |
eb1a524c DS |
601 | /* |
602 | * Indicate that balance has been set up from the ioctl and is in the | |
603 | * main phase. The fs_info::balance_ctl is initialized. | |
604 | */ | |
605 | BTRFS_FS_BALANCE_RUNNING, | |
fd340d0f | 606 | |
907d2710 DS |
607 | /* |
608 | * Indicate that relocation of a chunk has started, it's set per chunk | |
609 | * and is toggled between chunks. | |
610 | */ | |
611 | BTRFS_FS_RELOC_RUNNING, | |
612 | ||
fd340d0f JB |
613 | /* Indicate that the cleaner thread is awake and doing something. */ |
614 | BTRFS_FS_CLEANER_RUNNING, | |
9b4e675a DS |
615 | |
616 | /* | |
617 | * The checksumming has an optimized version and is considered fast, | |
618 | * so we don't need to offload checksums to workqueues. | |
619 | */ | |
620 | BTRFS_FS_CSUM_IMPL_FAST, | |
b0643e59 DZ |
621 | |
622 | /* Indicate that the discard workqueue can service discards. */ | |
623 | BTRFS_FS_DISCARD_RUNNING, | |
94846229 BB |
624 | |
625 | /* Indicate that we need to cleanup space cache v1 */ | |
626 | BTRFS_FS_CLEANUP_SPACE_CACHE_V1, | |
2f96e402 JB |
627 | |
628 | /* Indicate that we can't trust the free space tree for caching yet */ | |
629 | BTRFS_FS_FREE_SPACE_TREE_UNTRUSTED, | |
bc03f39e FM |
630 | |
631 | /* Indicate whether there are any tree modification log users */ | |
632 | BTRFS_FS_TREE_MOD_LOG_USERS, | |
e9306ad4 | 633 | |
fdfbf020 JB |
634 | /* Indicate that we want the transaction kthread to commit right now. */ |
635 | BTRFS_FS_COMMIT_TRANS, | |
636 | ||
b4be6aef JB |
637 | /* Indicate we have half completed snapshot deletions pending. */ |
638 | BTRFS_FS_UNFINISHED_DROPS, | |
639 | ||
2ce543f4 NA |
640 | /* Indicate we have to finish a zone to do next allocation. */ |
641 | BTRFS_FS_NEED_ZONE_FINISH, | |
642 | ||
e9306ad4 QW |
643 | #if BITS_PER_LONG == 32 |
644 | /* Indicate if we have error/warn message printed on 32bit systems */ | |
645 | BTRFS_FS_32BIT_ERROR, | |
646 | BTRFS_FS_32BIT_WARN, | |
647 | #endif | |
eb1a524c | 648 | }; |
3009a62f | 649 | |
c3e1f96c GR |
650 | /* |
651 | * Exclusive operations (device replace, resize, device add/remove, balance) | |
652 | */ | |
653 | enum btrfs_exclusive_operation { | |
654 | BTRFS_EXCLOP_NONE, | |
efc0e69c | 655 | BTRFS_EXCLOP_BALANCE_PAUSED, |
c3e1f96c GR |
656 | BTRFS_EXCLOP_BALANCE, |
657 | BTRFS_EXCLOP_DEV_ADD, | |
658 | BTRFS_EXCLOP_DEV_REMOVE, | |
659 | BTRFS_EXCLOP_DEV_REPLACE, | |
660 | BTRFS_EXCLOP_RESIZE, | |
661 | BTRFS_EXCLOP_SWAP_ACTIVATE, | |
662 | }; | |
663 | ||
e55958c8 IA |
664 | /* Store data about transaction commits, exported via sysfs. */ |
665 | struct btrfs_commit_stats { | |
666 | /* Total number of commits */ | |
667 | u64 commit_count; | |
668 | /* The maximum commit duration so far in ns */ | |
669 | u64 max_commit_dur; | |
670 | /* The last commit duration in ns */ | |
671 | u64 last_commit_dur; | |
672 | /* The total commit duration in ns */ | |
673 | u64 total_commit_dur; | |
674 | }; | |
675 | ||
9f5fae2f | 676 | struct btrfs_fs_info { |
e17cade2 | 677 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
afcdd129 | 678 | unsigned long flags; |
62e2749e | 679 | struct btrfs_root *tree_root; |
0b86a832 CM |
680 | struct btrfs_root *chunk_root; |
681 | struct btrfs_root *dev_root; | |
3de4586c | 682 | struct btrfs_root *fs_root; |
416ac51d | 683 | struct btrfs_root *quota_root; |
f7a81ea4 | 684 | struct btrfs_root *uuid_root; |
aeb935a4 | 685 | struct btrfs_root *data_reloc_root; |
9c54e80d | 686 | struct btrfs_root *block_group_root; |
e02119d5 CM |
687 | |
688 | /* the log root tree is a directory of all the other log roots */ | |
689 | struct btrfs_root *log_root_tree; | |
4df27c4d | 690 | |
abed4aaa JB |
691 | /* The tree that holds the global roots (csum, extent, etc) */ |
692 | rwlock_t global_root_lock; | |
693 | struct rb_root global_root_tree; | |
694 | ||
fc7cbcd4 DS |
695 | spinlock_t fs_roots_radix_lock; |
696 | struct radix_tree_root fs_roots_radix; | |
1a5bc167 | 697 | |
0f9dd46c | 698 | /* block group cache stuff */ |
16b0c258 | 699 | rwlock_t block_group_cache_lock; |
08dddb29 | 700 | struct rb_root_cached block_group_cache_tree; |
0f9dd46c | 701 | |
2bf64758 | 702 | /* keep track of unallocated space */ |
a5ed45f8 | 703 | atomic64_t free_chunk_space; |
2bf64758 | 704 | |
fe119a6e NB |
705 | /* Track ranges which are used by log trees blocks/logged data extents */ |
706 | struct extent_io_tree excluded_extents; | |
1a5bc167 | 707 | |
0b86a832 | 708 | /* logical->physical extent mapping */ |
c8bf1b67 | 709 | struct extent_map_tree mapping_tree; |
0b86a832 | 710 | |
16cdcec7 MX |
711 | /* |
712 | * block reservation for extent, checksum, root tree and | |
713 | * delayed dir index item | |
714 | */ | |
f0486c68 | 715 | struct btrfs_block_rsv global_block_rsv; |
f0486c68 YZ |
716 | /* block reservation for metadata operations */ |
717 | struct btrfs_block_rsv trans_block_rsv; | |
718 | /* block reservation for chunk tree */ | |
719 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
720 | /* block reservation for delayed operations */ |
721 | struct btrfs_block_rsv delayed_block_rsv; | |
ba2c4d4e JB |
722 | /* block reservation for delayed refs */ |
723 | struct btrfs_block_rsv delayed_refs_rsv; | |
f0486c68 YZ |
724 | |
725 | struct btrfs_block_rsv empty_block_rsv; | |
726 | ||
293ffd5f | 727 | u64 generation; |
15ee9bc7 | 728 | u64 last_trans_committed; |
d96b3424 FM |
729 | /* |
730 | * Generation of the last transaction used for block group relocation | |
731 | * since the filesystem was last mounted (or 0 if none happened yet). | |
732 | * Must be written and read while holding btrfs_fs_info::commit_root_sem. | |
733 | */ | |
734 | u64 last_reloc_trans; | |
0a2b2a84 | 735 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
736 | |
737 | /* | |
738 | * this is updated to the current trans every time a full commit | |
739 | * is required instead of the faster short fsync log commits | |
740 | */ | |
741 | u64 last_trans_log_full_commit; | |
25cd999e | 742 | unsigned long mount_opt; |
572d9ab7 DS |
743 | /* |
744 | * Track requests for actions that need to be done during transaction | |
745 | * commit (like for some mount options). | |
746 | */ | |
747 | unsigned long pending_changes; | |
261507a0 | 748 | unsigned long compress_type:4; |
f51d2b59 | 749 | unsigned int compress_level; |
d3740608 | 750 | u32 commit_interval; |
8c6a3ee6 MX |
751 | /* |
752 | * It is a suggestive number, the read side is safe even it gets a | |
753 | * wrong number because we will write out the data into a regular | |
754 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
755 | * so it is also safe. | |
756 | */ | |
6f568d35 | 757 | u64 max_inline; |
0d0c71b3 | 758 | |
79154b1b | 759 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 760 | wait_queue_head_t transaction_throttle; |
f9295749 | 761 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 762 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 763 | wait_queue_head_t async_submit_wait; |
e02119d5 | 764 | |
ceda0864 MX |
765 | /* |
766 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
767 | * when they are updated. | |
768 | * | |
769 | * Because we do not clear the flags for ever, so we needn't use | |
770 | * the lock on the read side. | |
771 | * | |
772 | * We also needn't use the lock when we mount the fs, because | |
773 | * there is no other task which will update the flag. | |
774 | */ | |
775 | spinlock_t super_lock; | |
6c41761f DS |
776 | struct btrfs_super_block *super_copy; |
777 | struct btrfs_super_block *super_for_commit; | |
e20d96d6 | 778 | struct super_block *sb; |
d98237b3 | 779 | struct inode *btree_inode; |
e02119d5 | 780 | struct mutex tree_log_mutex; |
a74a4b97 CM |
781 | struct mutex transaction_kthread_mutex; |
782 | struct mutex cleaner_mutex; | |
925baedd | 783 | struct mutex chunk_mutex; |
53b381b3 | 784 | |
1bbc621e CM |
785 | /* |
786 | * this is taken to make sure we don't set block groups ro after | |
787 | * the free space cache has been allocated on them | |
788 | */ | |
789 | struct mutex ro_block_group_mutex; | |
790 | ||
53b381b3 DW |
791 | /* this is used during read/modify/write to make sure |
792 | * no two ios are trying to mod the same stripe at the same | |
793 | * time | |
794 | */ | |
795 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
796 | ||
5a3f23d5 CM |
797 | /* |
798 | * this protects the ordered operations list only while we are | |
799 | * processing all of the entries on it. This way we make | |
800 | * sure the commit code doesn't find the list temporarily empty | |
801 | * because another function happens to be doing non-waiting preflush | |
802 | * before jumping into the main commit. | |
803 | */ | |
804 | struct mutex ordered_operations_mutex; | |
9ffba8cd | 805 | |
9e351cc8 | 806 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 807 | |
c71bf099 | 808 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 809 | |
c71bf099 | 810 | struct rw_semaphore subvol_sem; |
76dda93c | 811 | |
a4abeea4 | 812 | spinlock_t trans_lock; |
7585717f CM |
813 | /* |
814 | * the reloc mutex goes with the trans lock, it is taken | |
815 | * during commit to protect us from the relocation code | |
816 | */ | |
817 | struct mutex reloc_mutex; | |
818 | ||
8fd17795 | 819 | struct list_head trans_list; |
facda1e7 | 820 | struct list_head dead_roots; |
11833d66 | 821 | struct list_head caching_block_groups; |
e02119d5 | 822 | |
24bbcf04 YZ |
823 | spinlock_t delayed_iput_lock; |
824 | struct list_head delayed_iputs; | |
034f784d JB |
825 | atomic_t nr_delayed_iputs; |
826 | wait_queue_head_t delayed_iputs_wait; | |
24bbcf04 | 827 | |
fc36ed7e | 828 | atomic64_t tree_mod_seq; |
f29021b2 | 829 | |
7227ff4d | 830 | /* this protects tree_mod_log and tree_mod_seq_list */ |
f29021b2 JS |
831 | rwlock_t tree_mod_log_lock; |
832 | struct rb_root tree_mod_log; | |
7227ff4d | 833 | struct list_head tree_mod_seq_list; |
f29021b2 | 834 | |
771ed689 | 835 | atomic_t async_delalloc_pages; |
ce9adaa5 | 836 | |
3eaa2885 | 837 | /* |
199c2a9c | 838 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 839 | */ |
199c2a9c | 840 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
841 | |
842 | /* | |
199c2a9c MX |
843 | * all fs/file tree roots in which there are data=ordered extents |
844 | * pending writeback are added into this list. | |
845 | * | |
5a3f23d5 CM |
846 | * these can span multiple transactions and basically include |
847 | * every dirty data page that isn't from nodatacow | |
848 | */ | |
199c2a9c | 849 | struct list_head ordered_roots; |
5a3f23d5 | 850 | |
573bfb72 | 851 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
852 | spinlock_t delalloc_root_lock; |
853 | /* all fs/file tree roots that have delalloc inodes. */ | |
854 | struct list_head delalloc_roots; | |
3eaa2885 | 855 | |
8b712842 CM |
856 | /* |
857 | * there is a pool of worker threads for checksumming during writes | |
858 | * and a pool for checksumming after reads. This is because readers | |
859 | * can run with FS locks held, and the writers may be waiting for | |
860 | * those locks. We don't want ordering in the pending list to cause | |
861 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
862 | * |
863 | * A third pool does submit_bio to avoid deadlocking with the other | |
864 | * two | |
8b712842 | 865 | */ |
d458b054 | 866 | struct btrfs_workqueue *workers; |
a31b4a43 | 867 | struct btrfs_workqueue *hipri_workers; |
d458b054 QW |
868 | struct btrfs_workqueue *delalloc_workers; |
869 | struct btrfs_workqueue *flush_workers; | |
d7b9416f CH |
870 | struct workqueue_struct *endio_workers; |
871 | struct workqueue_struct *endio_meta_workers; | |
d34e123d | 872 | struct workqueue_struct *endio_raid56_workers; |
385de0ef | 873 | struct workqueue_struct *rmw_workers; |
fed8a72d | 874 | struct workqueue_struct *compressed_write_workers; |
d458b054 QW |
875 | struct btrfs_workqueue *endio_write_workers; |
876 | struct btrfs_workqueue *endio_freespace_worker; | |
d458b054 | 877 | struct btrfs_workqueue *caching_workers; |
bab39bf9 | 878 | |
247e743c CM |
879 | /* |
880 | * fixup workers take dirty pages that didn't properly go through | |
881 | * the cow mechanism and make them safe to write. It happens | |
882 | * for the sys_munmap function call path | |
883 | */ | |
d458b054 QW |
884 | struct btrfs_workqueue *fixup_workers; |
885 | struct btrfs_workqueue *delayed_workers; | |
a79b7d4b | 886 | |
a74a4b97 CM |
887 | struct task_struct *transaction_kthread; |
888 | struct task_struct *cleaner_kthread; | |
f7b885be | 889 | u32 thread_pool_size; |
8b712842 | 890 | |
6ab0a202 | 891 | struct kobject *space_info_kobj; |
49e5fb46 | 892 | struct kobject *qgroups_kobj; |
9f5fae2f | 893 | |
e2d84521 MX |
894 | /* used to keep from writing metadata until there is a nice batch */ |
895 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 896 | struct percpu_counter delalloc_bytes; |
5deb17e1 | 897 | struct percpu_counter ordered_bytes; |
e2d84521 | 898 | s32 dirty_metadata_batch; |
963d678b MX |
899 | s32 delalloc_batch; |
900 | ||
0b86a832 CM |
901 | struct list_head dirty_cowonly_roots; |
902 | ||
8a4b83cc | 903 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
904 | |
905 | /* | |
dc2d3005 JM |
906 | * The space_info list is effectively read only after initial |
907 | * setup. It is populated at mount time and cleaned up after | |
908 | * all block groups are removed. RCU is used to protect it. | |
4184ea7f | 909 | */ |
6324fbf3 | 910 | struct list_head space_info; |
4184ea7f | 911 | |
b4d7c3c9 LZ |
912 | struct btrfs_space_info *data_sinfo; |
913 | ||
5d4f98a2 YZ |
914 | struct reloc_control *reloc_ctl; |
915 | ||
583b7231 | 916 | /* data_alloc_cluster is only used in ssd_spread mode */ |
fa9c0d79 CM |
917 | struct btrfs_free_cluster data_alloc_cluster; |
918 | ||
919 | /* all metadata allocations go through this cluster */ | |
920 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 921 | |
4cb5300b CM |
922 | /* auto defrag inodes go here */ |
923 | spinlock_t defrag_inodes_lock; | |
924 | struct rb_root defrag_inodes; | |
925 | atomic_t defrag_running; | |
926 | ||
de98ced9 MX |
927 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
928 | seqlock_t profiles_lock; | |
a46d11a8 ID |
929 | /* |
930 | * these three are in extended format (availability of single | |
931 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
932 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
933 | */ | |
d18a2c44 CM |
934 | u64 avail_data_alloc_bits; |
935 | u64 avail_metadata_alloc_bits; | |
936 | u64 avail_system_alloc_bits; | |
788f20eb | 937 | |
c9e9f97b ID |
938 | /* restriper state */ |
939 | spinlock_t balance_lock; | |
940 | struct mutex balance_mutex; | |
837d5b6e | 941 | atomic_t balance_pause_req; |
a7e99c69 | 942 | atomic_t balance_cancel_req; |
c9e9f97b | 943 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 944 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 945 | |
907d2710 DS |
946 | /* Cancellation requests for chunk relocation */ |
947 | atomic_t reloc_cancel_req; | |
948 | ||
d612ac59 AJ |
949 | u32 data_chunk_allocations; |
950 | u32 metadata_ratio; | |
97e728d4 | 951 | |
788f20eb | 952 | void *bdev_holder; |
acce952b | 953 | |
a2de733c AJ |
954 | /* private scrub information */ |
955 | struct mutex scrub_lock; | |
956 | atomic_t scrubs_running; | |
957 | atomic_t scrub_pause_req; | |
958 | atomic_t scrubs_paused; | |
959 | atomic_t scrub_cancel_req; | |
960 | wait_queue_head_t scrub_pause_wait; | |
c8352942 DS |
961 | /* |
962 | * The worker pointers are NULL iff the refcount is 0, ie. scrub is not | |
963 | * running. | |
964 | */ | |
ff09c4ca | 965 | refcount_t scrub_workers_refcnt; |
be539518 CH |
966 | struct workqueue_struct *scrub_workers; |
967 | struct workqueue_struct *scrub_wr_completion_workers; | |
968 | struct workqueue_struct *scrub_parity_workers; | |
8481dd80 | 969 | struct btrfs_subpage_info *subpage_info; |
a2de733c | 970 | |
b0643e59 DZ |
971 | struct btrfs_discard_ctl discard_ctl; |
972 | ||
21adbd5c SB |
973 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
974 | u32 check_integrity_print_mask; | |
975 | #endif | |
416ac51d AJ |
976 | /* is qgroup tracking in a consistent state? */ |
977 | u64 qgroup_flags; | |
978 | ||
979 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
980 | struct rb_root qgroup_tree; | |
981 | spinlock_t qgroup_lock; | |
982 | ||
1e8f9158 WS |
983 | /* |
984 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
985 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
986 | */ | |
987 | struct ulist *qgroup_ulist; | |
988 | ||
a855fbe6 FM |
989 | /* |
990 | * Protect user change for quota operations. If a transaction is needed, | |
991 | * it must be started before locking this lock. | |
992 | */ | |
f2f6ed3d WS |
993 | struct mutex qgroup_ioctl_lock; |
994 | ||
416ac51d AJ |
995 | /* list of dirty qgroups to be written at next commit */ |
996 | struct list_head dirty_qgroups; | |
997 | ||
e69bcee3 | 998 | /* used by qgroup for an efficient tree traversal */ |
416ac51d | 999 | u64 qgroup_seq; |
21adbd5c | 1000 | |
2f232036 JS |
1001 | /* qgroup rescan items */ |
1002 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1003 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1004 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1005 | struct completion qgroup_rescan_completion; |
b382a324 | 1006 | struct btrfs_work qgroup_rescan_work; |
d2c609b8 | 1007 | bool qgroup_rescan_running; /* protected by qgroup_rescan_lock */ |
2f232036 | 1008 | |
acce952b | 1009 | /* filesystem state */ |
87533c47 | 1010 | unsigned long fs_state; |
16cdcec7 MX |
1011 | |
1012 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1013 | |
01cd3909 | 1014 | /* Extent buffer radix tree */ |
f28491e0 | 1015 | spinlock_t buffer_lock; |
478ef886 | 1016 | /* Entries are eb->start / sectorsize */ |
01cd3909 | 1017 | struct radix_tree_root buffer_radix; |
f28491e0 | 1018 | |
af31f5e5 CM |
1019 | /* next backup root to be overwritten */ |
1020 | int backup_root_index; | |
5af3e8cc | 1021 | |
e922e087 SB |
1022 | /* device replace state */ |
1023 | struct btrfs_dev_replace dev_replace; | |
5ac00add | 1024 | |
803b2f54 | 1025 | struct semaphore uuid_tree_rescan_sem; |
21c7e756 MX |
1026 | |
1027 | /* Used to reclaim the metadata space in the background. */ | |
1028 | struct work_struct async_reclaim_work; | |
57056740 | 1029 | struct work_struct async_data_reclaim_work; |
576fa348 | 1030 | struct work_struct preempt_reclaim_work; |
47ab2a6c | 1031 | |
18bb8bbf JT |
1032 | /* Reclaim partially filled block groups in the background */ |
1033 | struct work_struct reclaim_bgs_work; | |
1034 | struct list_head reclaim_bgs; | |
1035 | int bg_reclaim_threshold; | |
1036 | ||
47ab2a6c JB |
1037 | spinlock_t unused_bgs_lock; |
1038 | struct list_head unused_bgs; | |
d4b450cd | 1039 | struct mutex unused_bg_unpin_mutex; |
f3372065 JT |
1040 | /* Protect block groups that are going to be deleted */ |
1041 | struct mutex reclaim_bgs_lock; | |
f667aef6 | 1042 | |
da17066c JM |
1043 | /* Cached block sizes */ |
1044 | u32 nodesize; | |
1045 | u32 sectorsize; | |
ab108d99 DS |
1046 | /* ilog2 of sectorsize, use to avoid 64bit division */ |
1047 | u32 sectorsize_bits; | |
22b6331d | 1048 | u32 csum_size; |
fe5ecbe8 | 1049 | u32 csums_per_leaf; |
da17066c | 1050 | u32 stripesize; |
fd708b81 | 1051 | |
f7b12a62 NA |
1052 | /* |
1053 | * Maximum size of an extent. BTRFS_MAX_EXTENT_SIZE on regular | |
1054 | * filesystem, on zoned it depends on the device constraints. | |
1055 | */ | |
1056 | u64 max_extent_size; | |
1057 | ||
eede2bf3 OS |
1058 | /* Block groups and devices containing active swapfiles. */ |
1059 | spinlock_t swapfile_pins_lock; | |
1060 | struct rb_root swapfile_pins; | |
1061 | ||
6d97c6e3 JT |
1062 | struct crypto_shash *csum_shash; |
1063 | ||
0d7ed32c DS |
1064 | /* Type of exclusive operation running, protected by super_lock */ |
1065 | enum btrfs_exclusive_operation exclusive_operation; | |
c3e1f96c | 1066 | |
b70f5097 NA |
1067 | /* |
1068 | * Zone size > 0 when in ZONED mode, otherwise it's used for a check | |
1069 | * if the mode is enabled | |
1070 | */ | |
8e010b3d | 1071 | u64 zone_size; |
b70f5097 | 1072 | |
c2ae7b77 NA |
1073 | /* Max size to emit ZONE_APPEND write command */ |
1074 | u64 max_zone_append_size; | |
0bc09ca1 | 1075 | struct mutex zoned_meta_io_lock; |
40ab3be1 NA |
1076 | spinlock_t treelog_bg_lock; |
1077 | u64 treelog_bg; | |
862931c7 | 1078 | |
c2707a25 JT |
1079 | /* |
1080 | * Start of the dedicated data relocation block group, protected by | |
1081 | * relocation_bg_lock. | |
1082 | */ | |
1083 | spinlock_t relocation_bg_lock; | |
1084 | u64 data_reloc_bg; | |
5f0addf7 | 1085 | struct mutex zoned_data_reloc_io_lock; |
c2707a25 | 1086 | |
f7238e50 JB |
1087 | u64 nr_global_roots; |
1088 | ||
afba2bc0 NA |
1089 | spinlock_t zone_active_bgs_lock; |
1090 | struct list_head zone_active_bgs; | |
1091 | ||
e55958c8 IA |
1092 | /* Updates are not protected by any lock */ |
1093 | struct btrfs_commit_stats commit_stats; | |
1094 | ||
e1489b4f IA |
1095 | /* |
1096 | * Annotations for transaction events (structures are empty when | |
1097 | * compiled without lockdep). | |
1098 | */ | |
1099 | struct lockdep_map btrfs_trans_num_writers_map; | |
1100 | ||
fd708b81 JB |
1101 | #ifdef CONFIG_BTRFS_FS_REF_VERIFY |
1102 | spinlock_t ref_verify_lock; | |
1103 | struct rb_root block_tree; | |
1104 | #endif | |
93945cb4 DZ |
1105 | |
1106 | #ifdef CONFIG_BTRFS_DEBUG | |
1107 | struct kobject *debug_kobj; | |
e4faab84 | 1108 | struct kobject *discard_debug_kobj; |
bd647ce3 | 1109 | struct list_head allocated_roots; |
3fd63727 JB |
1110 | |
1111 | spinlock_t eb_leak_lock; | |
1112 | struct list_head allocated_ebs; | |
93945cb4 | 1113 | #endif |
324ae4df | 1114 | }; |
0b86a832 | 1115 | |
da17066c JM |
1116 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
1117 | { | |
1118 | return sb->s_fs_info; | |
1119 | } | |
1120 | ||
27cdeb70 MX |
1121 | /* |
1122 | * The state of btrfs root | |
1123 | */ | |
61fa90c1 DS |
1124 | enum { |
1125 | /* | |
1126 | * btrfs_record_root_in_trans is a multi-step process, and it can race | |
1127 | * with the balancing code. But the race is very small, and only the | |
1128 | * first time the root is added to each transaction. So IN_TRANS_SETUP | |
1129 | * is used to tell us when more checks are required | |
1130 | */ | |
1131 | BTRFS_ROOT_IN_TRANS_SETUP, | |
92a7cc42 QW |
1132 | |
1133 | /* | |
1134 | * Set if tree blocks of this root can be shared by other roots. | |
1135 | * Only subvolume trees and their reloc trees have this bit set. | |
1136 | * Conflicts with TRACK_DIRTY bit. | |
1137 | * | |
1138 | * This affects two things: | |
1139 | * | |
1140 | * - How balance works | |
1141 | * For shareable roots, we need to use reloc tree and do path | |
1142 | * replacement for balance, and need various pre/post hooks for | |
1143 | * snapshot creation to handle them. | |
1144 | * | |
1145 | * While for non-shareable trees, we just simply do a tree search | |
1146 | * with COW. | |
1147 | * | |
1148 | * - How dirty roots are tracked | |
1149 | * For shareable roots, btrfs_record_root_in_trans() is needed to | |
1150 | * track them, while non-subvolume roots have TRACK_DIRTY bit, they | |
1151 | * don't need to set this manually. | |
1152 | */ | |
1153 | BTRFS_ROOT_SHAREABLE, | |
61fa90c1 | 1154 | BTRFS_ROOT_TRACK_DIRTY, |
fc7cbcd4 | 1155 | BTRFS_ROOT_IN_RADIX, |
61fa90c1 DS |
1156 | BTRFS_ROOT_ORPHAN_ITEM_INSERTED, |
1157 | BTRFS_ROOT_DEFRAG_RUNNING, | |
1158 | BTRFS_ROOT_FORCE_COW, | |
1159 | BTRFS_ROOT_MULTI_LOG_TASKS, | |
1160 | BTRFS_ROOT_DIRTY, | |
83354f07 | 1161 | BTRFS_ROOT_DELETING, |
d2311e69 QW |
1162 | |
1163 | /* | |
1164 | * Reloc tree is orphan, only kept here for qgroup delayed subtree scan | |
1165 | * | |
1166 | * Set for the subvolume tree owning the reloc tree. | |
1167 | */ | |
1168 | BTRFS_ROOT_DEAD_RELOC_TREE, | |
78c52d9e JB |
1169 | /* Mark dead root stored on device whose cleanup needs to be resumed */ |
1170 | BTRFS_ROOT_DEAD_TREE, | |
47876f7c | 1171 | /* The root has a log tree. Used for subvolume roots and the tree root. */ |
e7a79811 | 1172 | BTRFS_ROOT_HAS_LOG_TREE, |
c53e9653 QW |
1173 | /* Qgroup flushing is in progress */ |
1174 | BTRFS_ROOT_QGROUP_FLUSHING, | |
54230013 JB |
1175 | /* We started the orphan cleanup for this root. */ |
1176 | BTRFS_ROOT_ORPHAN_CLEANUP, | |
b4be6aef JB |
1177 | /* This root has a drop operation that was started previously. */ |
1178 | BTRFS_ROOT_UNFINISHED_DROP, | |
b40130b2 JB |
1179 | /* This reloc root needs to have its buffers lockdep class reset. */ |
1180 | BTRFS_ROOT_RESET_LOCKDEP_CLASS, | |
61fa90c1 | 1181 | }; |
27cdeb70 | 1182 | |
ab9a323f IA |
1183 | /* |
1184 | * Lockdep annotation for wait events. | |
1185 | * | |
1186 | * @owner: The struct where the lockdep map is defined | |
1187 | * @lock: The lockdep map corresponding to a wait event | |
1188 | * | |
1189 | * This macro is used to annotate a wait event. In this case a thread acquires | |
1190 | * the lockdep map as writer (exclusive lock) because it has to block until all | |
1191 | * the threads that hold the lock as readers signal the condition for the wait | |
1192 | * event and release their locks. | |
1193 | */ | |
1194 | #define btrfs_might_wait_for_event(owner, lock) \ | |
1195 | do { \ | |
1196 | rwsem_acquire(&owner->lock##_map, 0, 0, _THIS_IP_); \ | |
1197 | rwsem_release(&owner->lock##_map, _THIS_IP_); \ | |
1198 | } while (0) | |
1199 | ||
1200 | /* | |
1201 | * Protection for the resource/condition of a wait event. | |
1202 | * | |
1203 | * @owner: The struct where the lockdep map is defined | |
1204 | * @lock: The lockdep map corresponding to a wait event | |
1205 | * | |
1206 | * Many threads can modify the condition for the wait event at the same time | |
1207 | * and signal the threads that block on the wait event. The threads that modify | |
1208 | * the condition and do the signaling acquire the lock as readers (shared | |
1209 | * lock). | |
1210 | */ | |
1211 | #define btrfs_lockdep_acquire(owner, lock) \ | |
1212 | rwsem_acquire_read(&owner->lock##_map, 0, 0, _THIS_IP_) | |
1213 | ||
1214 | /* | |
1215 | * Used after signaling the condition for a wait event to release the lockdep | |
1216 | * map held by a reader thread. | |
1217 | */ | |
1218 | #define btrfs_lockdep_release(owner, lock) \ | |
1219 | rwsem_release(&owner->lock##_map, _THIS_IP_) | |
1220 | ||
1221 | /* Initialization of the lockdep map */ | |
1222 | #define btrfs_lockdep_init_map(owner, lock) \ | |
1223 | do { \ | |
1224 | static struct lock_class_key lock##_key; \ | |
1225 | lockdep_init_map(&owner->lock##_map, #lock, &lock##_key, 0); \ | |
1226 | } while (0) | |
1227 | ||
b4be6aef JB |
1228 | static inline void btrfs_wake_unfinished_drop(struct btrfs_fs_info *fs_info) |
1229 | { | |
1230 | clear_and_wake_up_bit(BTRFS_FS_UNFINISHED_DROPS, &fs_info->flags); | |
1231 | } | |
1232 | ||
370a11b8 QW |
1233 | /* |
1234 | * Record swapped tree blocks of a subvolume tree for delayed subtree trace | |
1235 | * code. For detail check comment in fs/btrfs/qgroup.c. | |
1236 | */ | |
1237 | struct btrfs_qgroup_swapped_blocks { | |
1238 | spinlock_t lock; | |
1239 | /* RM_EMPTY_ROOT() of above blocks[] */ | |
1240 | bool swapped; | |
1241 | struct rb_root blocks[BTRFS_MAX_LEVEL]; | |
1242 | }; | |
1243 | ||
9f5fae2f CM |
1244 | /* |
1245 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1246 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1247 | */ |
1248 | struct btrfs_root { | |
abed4aaa JB |
1249 | struct rb_node rb_node; |
1250 | ||
5f39d397 | 1251 | struct extent_buffer *node; |
925baedd | 1252 | |
5f39d397 | 1253 | struct extent_buffer *commit_root; |
e02119d5 | 1254 | struct btrfs_root *log_root; |
1a40e23b | 1255 | struct btrfs_root *reloc_root; |
31153d81 | 1256 | |
27cdeb70 | 1257 | unsigned long state; |
62e2749e CM |
1258 | struct btrfs_root_item root_item; |
1259 | struct btrfs_key root_key; | |
9f5fae2f | 1260 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1261 | struct extent_io_tree dirty_log_pages; |
1262 | ||
a2135011 | 1263 | struct mutex objectid_mutex; |
7237f183 | 1264 | |
f0486c68 YZ |
1265 | spinlock_t accounting_lock; |
1266 | struct btrfs_block_rsv *block_rsv; | |
1267 | ||
e02119d5 | 1268 | struct mutex log_mutex; |
7237f183 YZ |
1269 | wait_queue_head_t log_writer_wait; |
1270 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1271 | struct list_head log_ctxs[2]; |
a93e0168 | 1272 | /* Used only for log trees of subvolumes, not for the log root tree */ |
7237f183 YZ |
1273 | atomic_t log_writers; |
1274 | atomic_t log_commit[2]; | |
28a95795 | 1275 | /* Used only for log trees of subvolumes, not for the log root tree */ |
2ecb7923 | 1276 | atomic_t log_batch; |
bb14a59b | 1277 | int log_transid; |
d1433deb MX |
1278 | /* No matter the commit succeeds or not*/ |
1279 | int log_transid_committed; | |
1280 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1281 | int last_log_commit; |
ff782e0a | 1282 | pid_t log_start_pid; |
ea8c2819 | 1283 | |
0f7d52f4 | 1284 | u64 last_trans; |
5f39d397 | 1285 | |
9f5fae2f | 1286 | u32 type; |
13a8a7c8 | 1287 | |
6b8fad57 | 1288 | u64 free_objectid; |
7585717f | 1289 | |
6702ed49 | 1290 | struct btrfs_key defrag_progress; |
0ef3e66b | 1291 | struct btrfs_key defrag_max; |
0b86a832 | 1292 | |
92a7cc42 | 1293 | /* The dirty list is only used by non-shareable roots */ |
0b86a832 | 1294 | struct list_head dirty_list; |
7b128766 | 1295 | |
5d4f98a2 YZ |
1296 | struct list_head root_list; |
1297 | ||
2ab28f32 JB |
1298 | spinlock_t log_extents_lock[2]; |
1299 | struct list_head logged_list[2]; | |
1300 | ||
5d4f98a2 YZ |
1301 | spinlock_t inode_lock; |
1302 | /* red-black tree that keeps track of in-memory inodes */ | |
1303 | struct rb_root inode_tree; | |
1304 | ||
16cdcec7 | 1305 | /* |
088aea3b DS |
1306 | * radix tree that keeps track of delayed nodes of every inode, |
1307 | * protected by inode_lock | |
16cdcec7 | 1308 | */ |
088aea3b | 1309 | struct radix_tree_root delayed_nodes_tree; |
3394e160 CM |
1310 | /* |
1311 | * right now this just gets used so that a root has its own devid | |
1312 | * for stat. It may be used for more later | |
1313 | */ | |
0ee5dc67 | 1314 | dev_t anon_dev; |
f1ebcc74 | 1315 | |
5f3ab90a | 1316 | spinlock_t root_item_lock; |
0700cea7 | 1317 | refcount_t refs; |
eb73c1b7 | 1318 | |
573bfb72 | 1319 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1320 | spinlock_t delalloc_lock; |
1321 | /* | |
1322 | * all of the inodes that have delalloc bytes. It is possible for | |
1323 | * this list to be empty even when there is still dirty data=ordered | |
1324 | * extents waiting to finish IO. | |
1325 | */ | |
1326 | struct list_head delalloc_inodes; | |
1327 | struct list_head delalloc_root; | |
1328 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1329 | |
1330 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1331 | /* |
1332 | * this is used by the balancing code to wait for all the pending | |
1333 | * ordered extents | |
1334 | */ | |
1335 | spinlock_t ordered_extent_lock; | |
1336 | ||
1337 | /* | |
1338 | * all of the data=ordered extents pending writeback | |
1339 | * these can span multiple transactions and basically include | |
1340 | * every dirty data page that isn't from nodatacow | |
1341 | */ | |
1342 | struct list_head ordered_extents; | |
1343 | struct list_head ordered_root; | |
1344 | u64 nr_ordered_extents; | |
2c686537 | 1345 | |
d2311e69 QW |
1346 | /* |
1347 | * Not empty if this subvolume root has gone through tree block swap | |
1348 | * (relocation) | |
1349 | * | |
1350 | * Will be used by reloc_control::dirty_subvol_roots. | |
1351 | */ | |
1352 | struct list_head reloc_dirty_list; | |
1353 | ||
2c686537 DS |
1354 | /* |
1355 | * Number of currently running SEND ioctls to prevent | |
1356 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1357 | */ | |
1358 | int send_in_progress; | |
62d54f3a FM |
1359 | /* |
1360 | * Number of currently running deduplication operations that have a | |
1361 | * destination inode belonging to this root. Protected by the lock | |
1362 | * root_item_lock. | |
1363 | */ | |
1364 | int dedupe_in_progress; | |
dcc3eb96 NB |
1365 | /* For exclusion of snapshot creation and nocow writes */ |
1366 | struct btrfs_drew_lock snapshot_lock; | |
1367 | ||
8ecebf4d | 1368 | atomic_t snapshot_force_cow; |
8287475a QW |
1369 | |
1370 | /* For qgroup metadata reserved space */ | |
1371 | spinlock_t qgroup_meta_rsv_lock; | |
1372 | u64 qgroup_meta_rsv_pertrans; | |
1373 | u64 qgroup_meta_rsv_prealloc; | |
c53e9653 | 1374 | wait_queue_head_t qgroup_flush_wait; |
57ec5fb4 | 1375 | |
eede2bf3 OS |
1376 | /* Number of active swapfiles */ |
1377 | atomic_t nr_swapfiles; | |
1378 | ||
370a11b8 QW |
1379 | /* Record pairs of swapped blocks for qgroup */ |
1380 | struct btrfs_qgroup_swapped_blocks swapped_blocks; | |
1381 | ||
e289f03e FM |
1382 | /* Used only by log trees, when logging csum items */ |
1383 | struct extent_io_tree log_csum_range; | |
1384 | ||
57ec5fb4 DS |
1385 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
1386 | u64 alloc_bytenr; | |
1387 | #endif | |
bd647ce3 JB |
1388 | |
1389 | #ifdef CONFIG_BTRFS_DEBUG | |
1390 | struct list_head leak_list; | |
1391 | #endif | |
62e2749e | 1392 | }; |
118c701e | 1393 | |
bf385648 FM |
1394 | /* |
1395 | * Structure that conveys information about an extent that is going to replace | |
1396 | * all the extents in a file range. | |
1397 | */ | |
1398 | struct btrfs_replace_extent_info { | |
690a5dbf FM |
1399 | u64 disk_offset; |
1400 | u64 disk_len; | |
1401 | u64 data_offset; | |
1402 | u64 data_len; | |
1403 | u64 file_offset; | |
fb870f6c | 1404 | /* Pointer to a file extent item of type regular or prealloc. */ |
690a5dbf | 1405 | char *extent_buf; |
8fccebfa FM |
1406 | /* |
1407 | * Set to true when attempting to replace a file range with a new extent | |
1408 | * described by this structure, set to false when attempting to clone an | |
1409 | * existing extent into a file range. | |
1410 | */ | |
1411 | bool is_new_extent; | |
983d8209 FM |
1412 | /* Indicate if we should update the inode's mtime and ctime. */ |
1413 | bool update_times; | |
8fccebfa FM |
1414 | /* Meaningful only if is_new_extent is true. */ |
1415 | int qgroup_reserved; | |
1416 | /* | |
1417 | * Meaningful only if is_new_extent is true. | |
1418 | * Used to track how many extent items we have already inserted in a | |
1419 | * subvolume tree that refer to the extent described by this structure, | |
1420 | * so that we know when to create a new delayed ref or update an existing | |
1421 | * one. | |
1422 | */ | |
1423 | int insertions; | |
690a5dbf FM |
1424 | }; |
1425 | ||
5893dfb9 FM |
1426 | /* Arguments for btrfs_drop_extents() */ |
1427 | struct btrfs_drop_extents_args { | |
1428 | /* Input parameters */ | |
1429 | ||
1430 | /* | |
1431 | * If NULL, btrfs_drop_extents() will allocate and free its own path. | |
1432 | * If 'replace_extent' is true, this must not be NULL. Also the path | |
1433 | * is always released except if 'replace_extent' is true and | |
1434 | * btrfs_drop_extents() sets 'extent_inserted' to true, in which case | |
1435 | * the path is kept locked. | |
1436 | */ | |
1437 | struct btrfs_path *path; | |
1438 | /* Start offset of the range to drop extents from */ | |
1439 | u64 start; | |
1440 | /* End (exclusive, last byte + 1) of the range to drop extents from */ | |
1441 | u64 end; | |
1442 | /* If true drop all the extent maps in the range */ | |
1443 | bool drop_cache; | |
1444 | /* | |
1445 | * If true it means we want to insert a new extent after dropping all | |
1446 | * the extents in the range. If this is true, the 'extent_item_size' | |
1447 | * parameter must be set as well and the 'extent_inserted' field will | |
1448 | * be set to true by btrfs_drop_extents() if it could insert the new | |
1449 | * extent. | |
1450 | * Note: when this is set to true the path must not be NULL. | |
1451 | */ | |
1452 | bool replace_extent; | |
1453 | /* | |
1454 | * Used if 'replace_extent' is true. Size of the file extent item to | |
1455 | * insert after dropping all existing extents in the range | |
1456 | */ | |
1457 | u32 extent_item_size; | |
1458 | ||
1459 | /* Output parameters */ | |
1460 | ||
1461 | /* | |
1462 | * Set to the minimum between the input parameter 'end' and the end | |
1463 | * (exclusive, last byte + 1) of the last dropped extent. This is always | |
1464 | * set even if btrfs_drop_extents() returns an error. | |
1465 | */ | |
1466 | u64 drop_end; | |
2766ff61 FM |
1467 | /* |
1468 | * The number of allocated bytes found in the range. This can be smaller | |
1469 | * than the range's length when there are holes in the range. | |
1470 | */ | |
1471 | u64 bytes_found; | |
5893dfb9 FM |
1472 | /* |
1473 | * Only set if 'replace_extent' is true. Set to true if we were able | |
1474 | * to insert a replacement extent after dropping all extents in the | |
1475 | * range, otherwise set to false by btrfs_drop_extents(). | |
1476 | * Also, if btrfs_drop_extents() has set this to true it means it | |
1477 | * returned with the path locked, otherwise if it has set this to | |
1478 | * false it has returned with the path released. | |
1479 | */ | |
1480 | bool extent_inserted; | |
1481 | }; | |
1482 | ||
23b5ec74 | 1483 | struct btrfs_file_private { |
23b5ec74 JB |
1484 | void *filldir_buf; |
1485 | }; | |
1486 | ||
62e2749e | 1487 | |
da17066c | 1488 | static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1489 | { |
118c701e NB |
1490 | |
1491 | return info->nodesize - sizeof(struct btrfs_header); | |
1db1ff92 JM |
1492 | } |
1493 | ||
3d9ec8c4 NB |
1494 | #define BTRFS_LEAF_DATA_OFFSET offsetof(struct btrfs_leaf, items) |
1495 | ||
da17066c | 1496 | static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1497 | { |
da17066c | 1498 | return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item); |
1db1ff92 JM |
1499 | } |
1500 | ||
da17066c | 1501 | static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info) |
1db1ff92 | 1502 | { |
da17066c | 1503 | return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr); |
1db1ff92 JM |
1504 | } |
1505 | ||
1506 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ | |
1507 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
da17066c | 1508 | static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1509 | { |
da17066c | 1510 | return BTRFS_MAX_ITEM_SIZE(info) - |
1db1ff92 JM |
1511 | BTRFS_FILE_EXTENT_INLINE_DATA_START; |
1512 | } | |
1513 | ||
da17066c | 1514 | static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1515 | { |
da17066c | 1516 | return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item); |
1db1ff92 JM |
1517 | } |
1518 | ||
0942caa3 DS |
1519 | /* |
1520 | * Flags for mount options. | |
1521 | * | |
1522 | * Note: don't forget to add new options to btrfs_show_options() | |
1523 | */ | |
ccd9395b DS |
1524 | enum { |
1525 | BTRFS_MOUNT_NODATASUM = (1UL << 0), | |
1526 | BTRFS_MOUNT_NODATACOW = (1UL << 1), | |
1527 | BTRFS_MOUNT_NOBARRIER = (1UL << 2), | |
1528 | BTRFS_MOUNT_SSD = (1UL << 3), | |
1529 | BTRFS_MOUNT_DEGRADED = (1UL << 4), | |
1530 | BTRFS_MOUNT_COMPRESS = (1UL << 5), | |
1531 | BTRFS_MOUNT_NOTREELOG = (1UL << 6), | |
1532 | BTRFS_MOUNT_FLUSHONCOMMIT = (1UL << 7), | |
1533 | BTRFS_MOUNT_SSD_SPREAD = (1UL << 8), | |
1534 | BTRFS_MOUNT_NOSSD = (1UL << 9), | |
1535 | BTRFS_MOUNT_DISCARD_SYNC = (1UL << 10), | |
1536 | BTRFS_MOUNT_FORCE_COMPRESS = (1UL << 11), | |
1537 | BTRFS_MOUNT_SPACE_CACHE = (1UL << 12), | |
1538 | BTRFS_MOUNT_CLEAR_CACHE = (1UL << 13), | |
1539 | BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED = (1UL << 14), | |
1540 | BTRFS_MOUNT_ENOSPC_DEBUG = (1UL << 15), | |
1541 | BTRFS_MOUNT_AUTO_DEFRAG = (1UL << 16), | |
1542 | BTRFS_MOUNT_USEBACKUPROOT = (1UL << 17), | |
1543 | BTRFS_MOUNT_SKIP_BALANCE = (1UL << 18), | |
1544 | BTRFS_MOUNT_CHECK_INTEGRITY = (1UL << 19), | |
cbeaae4f | 1545 | BTRFS_MOUNT_CHECK_INTEGRITY_DATA = (1UL << 20), |
ccd9395b DS |
1546 | BTRFS_MOUNT_PANIC_ON_FATAL_ERROR = (1UL << 21), |
1547 | BTRFS_MOUNT_RESCAN_UUID_TREE = (1UL << 22), | |
1548 | BTRFS_MOUNT_FRAGMENT_DATA = (1UL << 23), | |
1549 | BTRFS_MOUNT_FRAGMENT_METADATA = (1UL << 24), | |
1550 | BTRFS_MOUNT_FREE_SPACE_TREE = (1UL << 25), | |
1551 | BTRFS_MOUNT_NOLOGREPLAY = (1UL << 26), | |
1552 | BTRFS_MOUNT_REF_VERIFY = (1UL << 27), | |
1553 | BTRFS_MOUNT_DISCARD_ASYNC = (1UL << 28), | |
1554 | BTRFS_MOUNT_IGNOREBADROOTS = (1UL << 29), | |
1555 | BTRFS_MOUNT_IGNOREDATACSUMS = (1UL << 30), | |
1556 | }; | |
b6cda9bc | 1557 | |
8b87dc17 | 1558 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
f7e98a7f | 1559 | #define BTRFS_DEFAULT_MAX_INLINE (2048) |
8b87dc17 | 1560 | |
b6cda9bc CM |
1561 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
1562 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 1563 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
3cdde224 | 1564 | #define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \ |
b6cda9bc | 1565 | BTRFS_MOUNT_##opt) |
572d9ab7 | 1566 | |
3cdde224 | 1567 | #define btrfs_set_and_info(fs_info, opt, fmt, args...) \ |
60f8667b | 1568 | do { \ |
3cdde224 JM |
1569 | if (!btrfs_test_opt(fs_info, opt)) \ |
1570 | btrfs_info(fs_info, fmt, ##args); \ | |
1571 | btrfs_set_opt(fs_info->mount_opt, opt); \ | |
60f8667b | 1572 | } while (0) |
9d89ce65 | 1573 | |
3cdde224 | 1574 | #define btrfs_clear_and_info(fs_info, opt, fmt, args...) \ |
60f8667b | 1575 | do { \ |
3cdde224 JM |
1576 | if (btrfs_test_opt(fs_info, opt)) \ |
1577 | btrfs_info(fs_info, fmt, ##args); \ | |
1578 | btrfs_clear_opt(fs_info->mount_opt, opt); \ | |
60f8667b | 1579 | } while (0) |
9d89ce65 | 1580 | |
572d9ab7 DS |
1581 | /* |
1582 | * Requests for changes that need to be done during transaction commit. | |
1583 | * | |
1584 | * Internal mount options that are used for special handling of the real | |
1585 | * mount options (eg. cannot be set during remount and have to be set during | |
1586 | * transaction commit) | |
1587 | */ | |
1588 | ||
5297199a | 1589 | #define BTRFS_PENDING_COMMIT (0) |
7e1876ac | 1590 | |
572d9ab7 DS |
1591 | #define btrfs_test_pending(info, opt) \ |
1592 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1593 | #define btrfs_set_pending(info, opt) \ | |
1594 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1595 | #define btrfs_clear_pending(info, opt) \ | |
1596 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1597 | ||
1598 | /* | |
1599 | * Helpers for setting pending mount option changes. | |
1600 | * | |
1601 | * Expects corresponding macros | |
1602 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name | |
1603 | */ | |
1604 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ | |
1605 | do { \ | |
1606 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1607 | btrfs_info((info), fmt, ##args); \ | |
1608 | btrfs_set_pending((info), SET_##opt); \ | |
1609 | btrfs_clear_pending((info), CLEAR_##opt); \ | |
1610 | } \ | |
1611 | } while(0) | |
1612 | ||
1613 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ | |
1614 | do { \ | |
1615 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1616 | btrfs_info((info), fmt, ##args); \ | |
1617 | btrfs_set_pending((info), CLEAR_##opt); \ | |
1618 | btrfs_clear_pending((info), SET_##opt); \ | |
1619 | } \ | |
1620 | } while(0) | |
1621 | ||
b98b6767 Y |
1622 | /* |
1623 | * Inode flags | |
1624 | */ | |
77eea05e BB |
1625 | #define BTRFS_INODE_NODATASUM (1U << 0) |
1626 | #define BTRFS_INODE_NODATACOW (1U << 1) | |
1627 | #define BTRFS_INODE_READONLY (1U << 2) | |
1628 | #define BTRFS_INODE_NOCOMPRESS (1U << 3) | |
1629 | #define BTRFS_INODE_PREALLOC (1U << 4) | |
1630 | #define BTRFS_INODE_SYNC (1U << 5) | |
1631 | #define BTRFS_INODE_IMMUTABLE (1U << 6) | |
1632 | #define BTRFS_INODE_APPEND (1U << 7) | |
1633 | #define BTRFS_INODE_NODUMP (1U << 8) | |
1634 | #define BTRFS_INODE_NOATIME (1U << 9) | |
1635 | #define BTRFS_INODE_DIRSYNC (1U << 10) | |
1636 | #define BTRFS_INODE_COMPRESS (1U << 11) | |
1637 | ||
1638 | #define BTRFS_INODE_ROOT_ITEM_INIT (1U << 31) | |
08fe4db1 | 1639 | |
496245ca QW |
1640 | #define BTRFS_INODE_FLAG_MASK \ |
1641 | (BTRFS_INODE_NODATASUM | \ | |
1642 | BTRFS_INODE_NODATACOW | \ | |
1643 | BTRFS_INODE_READONLY | \ | |
1644 | BTRFS_INODE_NOCOMPRESS | \ | |
1645 | BTRFS_INODE_PREALLOC | \ | |
1646 | BTRFS_INODE_SYNC | \ | |
1647 | BTRFS_INODE_IMMUTABLE | \ | |
1648 | BTRFS_INODE_APPEND | \ | |
1649 | BTRFS_INODE_NODUMP | \ | |
1650 | BTRFS_INODE_NOATIME | \ | |
1651 | BTRFS_INODE_DIRSYNC | \ | |
1652 | BTRFS_INODE_COMPRESS | \ | |
1653 | BTRFS_INODE_ROOT_ITEM_INIT) | |
1654 | ||
14605409 BB |
1655 | #define BTRFS_INODE_RO_VERITY (1U << 0) |
1656 | ||
1657 | #define BTRFS_INODE_RO_FLAG_MASK (BTRFS_INODE_RO_VERITY) | |
77eea05e | 1658 | |
cfed81a0 | 1659 | struct btrfs_map_token { |
cc4c13d5 | 1660 | struct extent_buffer *eb; |
cfed81a0 CM |
1661 | char *kaddr; |
1662 | unsigned long offset; | |
1663 | }; | |
1664 | ||
2e78c927 | 1665 | #define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \ |
265fdfa6 | 1666 | ((bytes) >> (fs_info)->sectorsize_bits) |
2e78c927 | 1667 | |
c82f823c DS |
1668 | static inline void btrfs_init_map_token(struct btrfs_map_token *token, |
1669 | struct extent_buffer *eb) | |
cfed81a0 | 1670 | { |
c82f823c | 1671 | token->eb = eb; |
870b388d DS |
1672 | token->kaddr = page_address(eb->pages[0]); |
1673 | token->offset = 0; | |
cfed81a0 CM |
1674 | } |
1675 | ||
01327610 | 1676 | /* some macros to generate set/get functions for the struct fields. This |
5f39d397 CM |
1677 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
1678 | * one for u8: | |
1679 | */ | |
1680 | #define le8_to_cpu(v) (v) | |
1681 | #define cpu_to_le8(v) (v) | |
1682 | #define __le8 u8 | |
1683 | ||
e97659ce DS |
1684 | static inline u8 get_unaligned_le8(const void *p) |
1685 | { | |
1686 | return *(u8 *)p; | |
1687 | } | |
1688 | ||
1689 | static inline void put_unaligned_le8(u8 val, void *p) | |
1690 | { | |
1691 | *(u8 *)p = val; | |
1692 | } | |
1693 | ||
62e85577 | 1694 | #define read_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1695 | read_extent_buffer(eb, (char *)(result), \ |
1696 | ((unsigned long)(ptr)) + \ | |
1697 | offsetof(type, member), \ | |
1698 | sizeof(((type *)0)->member))) | |
1699 | ||
62e85577 | 1700 | #define write_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1701 | write_extent_buffer(eb, (char *)(result), \ |
1702 | ((unsigned long)(ptr)) + \ | |
1703 | offsetof(type, member), \ | |
1704 | sizeof(((type *)0)->member))) | |
1705 | ||
18077bb4 | 1706 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
cc4c13d5 DS |
1707 | u##bits btrfs_get_token_##bits(struct btrfs_map_token *token, \ |
1708 | const void *ptr, unsigned long off); \ | |
1709 | void btrfs_set_token_##bits(struct btrfs_map_token *token, \ | |
1710 | const void *ptr, unsigned long off, \ | |
1711 | u##bits val); \ | |
cb495113 DS |
1712 | u##bits btrfs_get_##bits(const struct extent_buffer *eb, \ |
1713 | const void *ptr, unsigned long off); \ | |
2b48966a | 1714 | void btrfs_set_##bits(const struct extent_buffer *eb, void *ptr, \ |
cb495113 | 1715 | unsigned long off, u##bits val); |
18077bb4 LZ |
1716 | |
1717 | DECLARE_BTRFS_SETGET_BITS(8) | |
1718 | DECLARE_BTRFS_SETGET_BITS(16) | |
1719 | DECLARE_BTRFS_SETGET_BITS(32) | |
1720 | DECLARE_BTRFS_SETGET_BITS(64) | |
1721 | ||
5f39d397 | 1722 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
1cbb1f45 JM |
1723 | static inline u##bits btrfs_##name(const struct extent_buffer *eb, \ |
1724 | const type *s) \ | |
18077bb4 | 1725 | { \ |
a55e65b8 | 1726 | static_assert(sizeof(u##bits) == sizeof(((type *)0))->member); \ |
18077bb4 LZ |
1727 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ |
1728 | } \ | |
2b48966a | 1729 | static inline void btrfs_set_##name(const struct extent_buffer *eb, type *s, \ |
18077bb4 LZ |
1730 | u##bits val) \ |
1731 | { \ | |
a55e65b8 | 1732 | static_assert(sizeof(u##bits) == sizeof(((type *)0))->member); \ |
18077bb4 LZ |
1733 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ |
1734 | } \ | |
cc4c13d5 DS |
1735 | static inline u##bits btrfs_token_##name(struct btrfs_map_token *token, \ |
1736 | const type *s) \ | |
18077bb4 | 1737 | { \ |
a55e65b8 | 1738 | static_assert(sizeof(u##bits) == sizeof(((type *)0))->member); \ |
cc4c13d5 | 1739 | return btrfs_get_token_##bits(token, s, offsetof(type, member));\ |
18077bb4 | 1740 | } \ |
cc4c13d5 DS |
1741 | static inline void btrfs_set_token_##name(struct btrfs_map_token *token,\ |
1742 | type *s, u##bits val) \ | |
18077bb4 | 1743 | { \ |
a55e65b8 | 1744 | static_assert(sizeof(u##bits) == sizeof(((type *)0))->member); \ |
cc4c13d5 | 1745 | btrfs_set_token_##bits(token, s, offsetof(type, member), val); \ |
18077bb4 | 1746 | } |
5f39d397 CM |
1747 | |
1748 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1cbb1f45 | 1749 | static inline u##bits btrfs_##name(const struct extent_buffer *eb) \ |
5f39d397 | 1750 | { \ |
884b07d0 QW |
1751 | const type *p = page_address(eb->pages[0]) + \ |
1752 | offset_in_page(eb->start); \ | |
e97659ce | 1753 | return get_unaligned_le##bits(&p->member); \ |
5f39d397 | 1754 | } \ |
2b48966a | 1755 | static inline void btrfs_set_##name(const struct extent_buffer *eb, \ |
5f39d397 CM |
1756 | u##bits val) \ |
1757 | { \ | |
884b07d0 | 1758 | type *p = page_address(eb->pages[0]) + offset_in_page(eb->start); \ |
e97659ce | 1759 | put_unaligned_le##bits(val, &p->member); \ |
5f39d397 | 1760 | } |
9078a3e1 | 1761 | |
5f39d397 | 1762 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1cbb1f45 | 1763 | static inline u##bits btrfs_##name(const type *s) \ |
5f39d397 | 1764 | { \ |
e97659ce | 1765 | return get_unaligned_le##bits(&s->member); \ |
5f39d397 CM |
1766 | } \ |
1767 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1768 | { \ | |
e97659ce | 1769 | put_unaligned_le##bits(val, &s->member); \ |
1e1d2701 CM |
1770 | } |
1771 | ||
2b48966a | 1772 | static inline u64 btrfs_device_total_bytes(const struct extent_buffer *eb, |
eca152ed NB |
1773 | struct btrfs_dev_item *s) |
1774 | { | |
a55e65b8 DS |
1775 | static_assert(sizeof(u64) == |
1776 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
eca152ed NB |
1777 | return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, |
1778 | total_bytes)); | |
1779 | } | |
2b48966a | 1780 | static inline void btrfs_set_device_total_bytes(const struct extent_buffer *eb, |
eca152ed NB |
1781 | struct btrfs_dev_item *s, |
1782 | u64 val) | |
1783 | { | |
a55e65b8 DS |
1784 | static_assert(sizeof(u64) == |
1785 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
7dfb8be1 | 1786 | WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize)); |
eca152ed NB |
1787 | btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val); |
1788 | } | |
1789 | ||
1790 | ||
0b86a832 | 1791 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
0b86a832 CM |
1792 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); |
1793 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1794 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1795 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1796 | start_offset, 64); | |
0b86a832 CM |
1797 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1798 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1799 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1800 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1801 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1802 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1803 | |
8a4b83cc CM |
1804 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1805 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1806 | total_bytes, 64); | |
1807 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1808 | bytes_used, 64); | |
1809 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1810 | io_align, 32); | |
1811 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1812 | io_width, 32); | |
1813 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1814 | sector_size, 32); | |
1815 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1816 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1817 | dev_group, 32); | |
1818 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1819 | seek_speed, 8); | |
1820 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1821 | bandwidth, 8); | |
2b82032c YZ |
1822 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1823 | generation, 64); | |
8a4b83cc | 1824 | |
410ba3a2 | 1825 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 1826 | { |
410ba3a2 | 1827 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
1828 | } |
1829 | ||
1473b24e | 1830 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 1831 | { |
1473b24e | 1832 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
1833 | } |
1834 | ||
e17cade2 | 1835 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1836 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1837 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1838 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1839 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1840 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1841 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1842 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1843 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1844 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1845 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1846 | ||
e17cade2 CM |
1847 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1848 | { | |
1849 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1850 | } | |
1851 | ||
1852 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1853 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1854 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1855 | stripe_len, 64); | |
1856 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1857 | io_align, 32); | |
1858 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1859 | io_width, 32); | |
1860 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1861 | sector_size, 32); | |
1862 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1863 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1864 | num_stripes, 16); | |
321aecc6 CM |
1865 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1866 | sub_stripes, 16); | |
0b86a832 CM |
1867 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1868 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1869 | ||
1870 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1871 | int nr) | |
1872 | { | |
1873 | unsigned long offset = (unsigned long)c; | |
1874 | offset += offsetof(struct btrfs_chunk, stripe); | |
1875 | offset += nr * sizeof(struct btrfs_stripe); | |
1876 | return (struct btrfs_stripe *)offset; | |
1877 | } | |
1878 | ||
a443755f CM |
1879 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1880 | { | |
1881 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1882 | } | |
1883 | ||
2b48966a | 1884 | static inline u64 btrfs_stripe_offset_nr(const struct extent_buffer *eb, |
0b86a832 CM |
1885 | struct btrfs_chunk *c, int nr) |
1886 | { | |
1887 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1888 | } | |
1889 | ||
2b48966a | 1890 | static inline u64 btrfs_stripe_devid_nr(const struct extent_buffer *eb, |
0b86a832 CM |
1891 | struct btrfs_chunk *c, int nr) |
1892 | { | |
1893 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1894 | } | |
1895 | ||
5f39d397 | 1896 | /* struct btrfs_block_group_item */ |
de0dc456 | 1897 | BTRFS_SETGET_STACK_FUNCS(stack_block_group_used, struct btrfs_block_group_item, |
5f39d397 | 1898 | used, 64); |
0222dfdd | 1899 | BTRFS_SETGET_FUNCS(block_group_used, struct btrfs_block_group_item, |
5f39d397 | 1900 | used, 64); |
de0dc456 | 1901 | BTRFS_SETGET_STACK_FUNCS(stack_block_group_chunk_objectid, |
0b86a832 | 1902 | struct btrfs_block_group_item, chunk_objectid, 64); |
e17cade2 | 1903 | |
0222dfdd | 1904 | BTRFS_SETGET_FUNCS(block_group_chunk_objectid, |
0b86a832 | 1905 | struct btrfs_block_group_item, chunk_objectid, 64); |
0222dfdd | 1906 | BTRFS_SETGET_FUNCS(block_group_flags, |
0b86a832 | 1907 | struct btrfs_block_group_item, flags, 64); |
de0dc456 | 1908 | BTRFS_SETGET_STACK_FUNCS(stack_block_group_flags, |
0b86a832 | 1909 | struct btrfs_block_group_item, flags, 64); |
1e1d2701 | 1910 | |
208acb8c OS |
1911 | /* struct btrfs_free_space_info */ |
1912 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
1913 | extent_count, 32); | |
1914 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
1915 | ||
3954401f CM |
1916 | /* struct btrfs_inode_ref */ |
1917 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1918 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1919 | |
f186373f MF |
1920 | /* struct btrfs_inode_extref */ |
1921 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
1922 | parent_objectid, 64); | |
1923 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
1924 | name_len, 16); | |
1925 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
1926 | ||
5f39d397 CM |
1927 | /* struct btrfs_inode_item */ |
1928 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1929 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1930 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1931 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1932 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1933 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1934 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1935 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1936 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1937 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1938 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1939 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
1940 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
1941 | generation, 64); | |
1942 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
1943 | sequence, 64); | |
1944 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
1945 | transid, 64); | |
1946 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
1947 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
1948 | nbytes, 64); | |
1949 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
1950 | block_group, 64); | |
1951 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1952 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
1953 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
1954 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
1955 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
1956 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
0b86a832 CM |
1957 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1958 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
1959 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
1960 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1961 | |
0b86a832 | 1962 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1963 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1964 | chunk_tree, 64); | |
1965 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1966 | chunk_objectid, 64); | |
1967 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1968 | chunk_offset, 64); | |
0b86a832 | 1969 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
5d4f98a2 YZ |
1970 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1971 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1972 | generation, 64); | |
1973 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1974 | |
5d4f98a2 YZ |
1975 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); |
1976 | ||
2b48966a | 1977 | static inline void btrfs_tree_block_key(const struct extent_buffer *eb, |
5d4f98a2 YZ |
1978 | struct btrfs_tree_block_info *item, |
1979 | struct btrfs_disk_key *key) | |
1980 | { | |
1981 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1982 | } | |
1983 | ||
2b48966a | 1984 | static inline void btrfs_set_tree_block_key(const struct extent_buffer *eb, |
5d4f98a2 YZ |
1985 | struct btrfs_tree_block_info *item, |
1986 | struct btrfs_disk_key *key) | |
1987 | { | |
1988 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1989 | } | |
e20d96d6 | 1990 | |
5d4f98a2 YZ |
1991 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1992 | root, 64); | |
1993 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1994 | objectid, 64); | |
1995 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1996 | offset, 64); | |
1997 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1998 | count, 32); | |
1999 | ||
2000 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
2001 | count, 32); | |
2002 | ||
2003 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
2004 | type, 8); | |
2005 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
2006 | offset, 64); | |
2007 | ||
2008 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
2009 | { | |
2010 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
2011 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
2012 | return sizeof(struct btrfs_extent_inline_ref); | |
2013 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
2014 | return sizeof(struct btrfs_shared_data_ref) + | |
2015 | sizeof(struct btrfs_extent_inline_ref); | |
2016 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
2017 | return sizeof(struct btrfs_extent_data_ref) + | |
2018 | offsetof(struct btrfs_extent_inline_ref, offset); | |
5d4f98a2 YZ |
2019 | return 0; |
2020 | } | |
2021 | ||
5f39d397 CM |
2022 | /* struct btrfs_node */ |
2023 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 2024 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
2025 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
2026 | blockptr, 64); | |
2027 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
2028 | generation, 64); | |
e20d96d6 | 2029 | |
2b48966a | 2030 | static inline u64 btrfs_node_blockptr(const struct extent_buffer *eb, int nr) |
cf27e1ee | 2031 | { |
5f39d397 CM |
2032 | unsigned long ptr; |
2033 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2034 | sizeof(struct btrfs_key_ptr) * nr; | |
2035 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
2036 | } |
2037 | ||
2b48966a | 2038 | static inline void btrfs_set_node_blockptr(const struct extent_buffer *eb, |
5f39d397 | 2039 | int nr, u64 val) |
cf27e1ee | 2040 | { |
5f39d397 CM |
2041 | unsigned long ptr; |
2042 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2043 | sizeof(struct btrfs_key_ptr) * nr; | |
2044 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
2045 | } |
2046 | ||
2b48966a | 2047 | static inline u64 btrfs_node_ptr_generation(const struct extent_buffer *eb, int nr) |
74493f7a CM |
2048 | { |
2049 | unsigned long ptr; | |
2050 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2051 | sizeof(struct btrfs_key_ptr) * nr; | |
2052 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
2053 | } | |
2054 | ||
2b48966a | 2055 | static inline void btrfs_set_node_ptr_generation(const struct extent_buffer *eb, |
74493f7a CM |
2056 | int nr, u64 val) |
2057 | { | |
2058 | unsigned long ptr; | |
2059 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2060 | sizeof(struct btrfs_key_ptr) * nr; | |
2061 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
2062 | } | |
2063 | ||
810191ff | 2064 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 2065 | { |
5f39d397 CM |
2066 | return offsetof(struct btrfs_node, ptrs) + |
2067 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
2068 | } |
2069 | ||
1cbb1f45 | 2070 | void btrfs_node_key(const struct extent_buffer *eb, |
e644d021 CM |
2071 | struct btrfs_disk_key *disk_key, int nr); |
2072 | ||
2b48966a | 2073 | static inline void btrfs_set_node_key(const struct extent_buffer *eb, |
5f39d397 | 2074 | struct btrfs_disk_key *disk_key, int nr) |
1d4f8a0c | 2075 | { |
5f39d397 CM |
2076 | unsigned long ptr; |
2077 | ptr = btrfs_node_key_ptr_offset(nr); | |
2078 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
2079 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
2080 | } |
2081 | ||
5f39d397 | 2082 | /* struct btrfs_item */ |
3212fa14 JB |
2083 | BTRFS_SETGET_FUNCS(raw_item_offset, struct btrfs_item, offset, 32); |
2084 | BTRFS_SETGET_FUNCS(raw_item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
2085 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
2086 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 2087 | |
5f39d397 | 2088 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 2089 | { |
5f39d397 CM |
2090 | return offsetof(struct btrfs_leaf, items) + |
2091 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
2092 | } |
2093 | ||
dd3cc16b | 2094 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 2095 | { |
5f39d397 | 2096 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
2097 | } |
2098 | ||
3212fa14 JB |
2099 | #define BTRFS_ITEM_SETGET_FUNCS(member) \ |
2100 | static inline u32 btrfs_item_##member(const struct extent_buffer *eb, \ | |
2101 | int slot) \ | |
2102 | { \ | |
2103 | return btrfs_raw_item_##member(eb, btrfs_item_nr(slot)); \ | |
2104 | } \ | |
2105 | static inline void btrfs_set_item_##member(const struct extent_buffer *eb, \ | |
2106 | int slot, u32 val) \ | |
2107 | { \ | |
2108 | btrfs_set_raw_item_##member(eb, btrfs_item_nr(slot), val); \ | |
2109 | } \ | |
2110 | static inline u32 btrfs_token_item_##member(struct btrfs_map_token *token, \ | |
2111 | int slot) \ | |
2112 | { \ | |
2113 | struct btrfs_item *item = btrfs_item_nr(slot); \ | |
2114 | return btrfs_token_raw_item_##member(token, item); \ | |
2115 | } \ | |
2116 | static inline void btrfs_set_token_item_##member(struct btrfs_map_token *token, \ | |
2117 | int slot, u32 val) \ | |
2118 | { \ | |
2119 | struct btrfs_item *item = btrfs_item_nr(slot); \ | |
2120 | btrfs_set_token_raw_item_##member(token, item, val); \ | |
2121 | } | |
2122 | ||
2123 | BTRFS_ITEM_SETGET_FUNCS(offset) | |
2124 | BTRFS_ITEM_SETGET_FUNCS(size); | |
74794207 | 2125 | |
dc2e724e | 2126 | static inline u32 btrfs_item_data_end(const struct extent_buffer *eb, int nr) |
5a08663d JB |
2127 | { |
2128 | return btrfs_item_offset(eb, nr) + btrfs_item_size(eb, nr); | |
2129 | } | |
2130 | ||
1cbb1f45 | 2131 | static inline void btrfs_item_key(const struct extent_buffer *eb, |
5f39d397 | 2132 | struct btrfs_disk_key *disk_key, int nr) |
1d4f6404 | 2133 | { |
dd3cc16b | 2134 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 2135 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
2136 | } |
2137 | ||
5f39d397 CM |
2138 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
2139 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 2140 | { |
dd3cc16b | 2141 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 2142 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
2143 | } |
2144 | ||
e02119d5 CM |
2145 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
2146 | ||
0660b5af CM |
2147 | /* |
2148 | * struct btrfs_root_ref | |
2149 | */ | |
2150 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
2151 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
2152 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
2153 | ||
5f39d397 | 2154 | /* struct btrfs_dir_item */ |
5103e947 | 2155 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
2156 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
2157 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 2158 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
2159 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
2160 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
2161 | data_len, 16); | |
2162 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
2163 | name_len, 16); | |
2164 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
2165 | transid, 64); | |
1d4f6404 | 2166 | |
1cbb1f45 JM |
2167 | static inline void btrfs_dir_item_key(const struct extent_buffer *eb, |
2168 | const struct btrfs_dir_item *item, | |
5f39d397 | 2169 | struct btrfs_disk_key *key) |
1d4f6404 | 2170 | { |
5f39d397 | 2171 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
2172 | } |
2173 | ||
5f39d397 CM |
2174 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
2175 | struct btrfs_dir_item *item, | |
1cbb1f45 | 2176 | const struct btrfs_disk_key *key) |
a8a2ee0c | 2177 | { |
5f39d397 | 2178 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
2179 | } |
2180 | ||
0af3d00b JB |
2181 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
2182 | num_entries, 64); | |
2183 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
2184 | num_bitmaps, 64); | |
2185 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
2186 | generation, 64); | |
2187 | ||
1cbb1f45 JM |
2188 | static inline void btrfs_free_space_key(const struct extent_buffer *eb, |
2189 | const struct btrfs_free_space_header *h, | |
0af3d00b JB |
2190 | struct btrfs_disk_key *key) |
2191 | { | |
2192 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2193 | } | |
2194 | ||
2195 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
2196 | struct btrfs_free_space_header *h, | |
1cbb1f45 | 2197 | const struct btrfs_disk_key *key) |
0af3d00b JB |
2198 | { |
2199 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2200 | } | |
2201 | ||
5f39d397 CM |
2202 | /* struct btrfs_disk_key */ |
2203 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
2204 | objectid, 64); | |
2205 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
2206 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 2207 | |
ce6ef5ab DS |
2208 | #ifdef __LITTLE_ENDIAN |
2209 | ||
2210 | /* | |
2211 | * Optimized helpers for little-endian architectures where CPU and on-disk | |
2212 | * structures have the same endianness and we can skip conversions. | |
2213 | */ | |
2214 | ||
2215 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu_key, | |
2216 | const struct btrfs_disk_key *disk_key) | |
2217 | { | |
2218 | memcpy(cpu_key, disk_key, sizeof(struct btrfs_key)); | |
2219 | } | |
2220 | ||
2221 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk_key, | |
2222 | const struct btrfs_key *cpu_key) | |
2223 | { | |
2224 | memcpy(disk_key, cpu_key, sizeof(struct btrfs_key)); | |
2225 | } | |
2226 | ||
2227 | static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb, | |
2228 | struct btrfs_key *cpu_key, int nr) | |
2229 | { | |
2230 | struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key; | |
2231 | ||
2232 | btrfs_node_key(eb, disk_key, nr); | |
2233 | } | |
2234 | ||
2235 | static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb, | |
2236 | struct btrfs_key *cpu_key, int nr) | |
2237 | { | |
2238 | struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key; | |
2239 | ||
2240 | btrfs_item_key(eb, disk_key, nr); | |
2241 | } | |
2242 | ||
2243 | static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb, | |
2244 | const struct btrfs_dir_item *item, | |
2245 | struct btrfs_key *cpu_key) | |
2246 | { | |
2247 | struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key; | |
2248 | ||
2249 | btrfs_dir_item_key(eb, item, disk_key); | |
2250 | } | |
2251 | ||
2252 | #else | |
2253 | ||
e2fa7227 | 2254 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
310712b2 | 2255 | const struct btrfs_disk_key *disk) |
e2fa7227 CM |
2256 | { |
2257 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 2258 | cpu->type = disk->type; |
e2fa7227 CM |
2259 | cpu->objectid = le64_to_cpu(disk->objectid); |
2260 | } | |
2261 | ||
2262 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
310712b2 | 2263 | const struct btrfs_key *cpu) |
e2fa7227 CM |
2264 | { |
2265 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 2266 | disk->type = cpu->type; |
e2fa7227 CM |
2267 | disk->objectid = cpu_to_le64(cpu->objectid); |
2268 | } | |
2269 | ||
1cbb1f45 JM |
2270 | static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb, |
2271 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2272 | { |
5f39d397 CM |
2273 | struct btrfs_disk_key disk_key; |
2274 | btrfs_node_key(eb, &disk_key, nr); | |
2275 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2276 | } |
2277 | ||
1cbb1f45 JM |
2278 | static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb, |
2279 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2280 | { |
5f39d397 CM |
2281 | struct btrfs_disk_key disk_key; |
2282 | btrfs_item_key(eb, &disk_key, nr); | |
2283 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2284 | } |
2285 | ||
1cbb1f45 JM |
2286 | static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb, |
2287 | const struct btrfs_dir_item *item, | |
2288 | struct btrfs_key *key) | |
4d775673 | 2289 | { |
5f39d397 CM |
2290 | struct btrfs_disk_key disk_key; |
2291 | btrfs_dir_item_key(eb, item, &disk_key); | |
2292 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2293 | } |
2294 | ||
ce6ef5ab DS |
2295 | #endif |
2296 | ||
5f39d397 | 2297 | /* struct btrfs_header */ |
db94535d | 2298 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2299 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2300 | generation, 64); | |
2301 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2302 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2303 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2304 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
2305 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
2306 | generation, 64); | |
2307 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
2308 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
2309 | nritems, 32); | |
2310 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 2311 | |
1cbb1f45 | 2312 | static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag) |
63b10fc4 CM |
2313 | { |
2314 | return (btrfs_header_flags(eb) & flag) == flag; | |
2315 | } | |
2316 | ||
80fbc341 | 2317 | static inline void btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) |
63b10fc4 CM |
2318 | { |
2319 | u64 flags = btrfs_header_flags(eb); | |
2320 | btrfs_set_header_flags(eb, flags | flag); | |
63b10fc4 CM |
2321 | } |
2322 | ||
80fbc341 | 2323 | static inline void btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) |
63b10fc4 CM |
2324 | { |
2325 | u64 flags = btrfs_header_flags(eb); | |
2326 | btrfs_set_header_flags(eb, flags & ~flag); | |
63b10fc4 CM |
2327 | } |
2328 | ||
1cbb1f45 | 2329 | static inline int btrfs_header_backref_rev(const struct extent_buffer *eb) |
5d4f98a2 YZ |
2330 | { |
2331 | u64 flags = btrfs_header_flags(eb); | |
2332 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2333 | } | |
2334 | ||
2335 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2336 | int rev) | |
2337 | { | |
2338 | u64 flags = btrfs_header_flags(eb); | |
2339 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2340 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2341 | btrfs_set_header_flags(eb, flags); | |
2342 | } | |
2343 | ||
1cbb1f45 | 2344 | static inline int btrfs_is_leaf(const struct extent_buffer *eb) |
3768f368 | 2345 | { |
d397712b | 2346 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2347 | } |
2348 | ||
5f39d397 | 2349 | /* struct btrfs_root_item */ |
84234f3a YZ |
2350 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2351 | generation, 64); | |
5f39d397 | 2352 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2353 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2354 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2355 | |
84234f3a YZ |
2356 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2357 | generation, 64); | |
db94535d | 2358 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
c8422684 | 2359 | BTRFS_SETGET_STACK_FUNCS(root_drop_level, struct btrfs_root_item, drop_level, 8); |
db94535d | 2360 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); |
5f39d397 CM |
2361 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2362 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2363 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2364 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2365 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2366 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2367 | last_snapshot, 64); | |
8ea05e3a AB |
2368 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2369 | generation_v2, 64); | |
2370 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2371 | ctransid, 64); | |
2372 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2373 | otransid, 64); | |
2374 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2375 | stransid, 64); | |
2376 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2377 | rtransid, 64); | |
123abc88 | 2378 | |
1cbb1f45 | 2379 | static inline bool btrfs_root_readonly(const struct btrfs_root *root) |
b83cc969 | 2380 | { |
49547068 | 2381 | /* Byte-swap the constant at compile time, root_item::flags is LE */ |
6ed3cf2c | 2382 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2383 | } |
2384 | ||
1cbb1f45 | 2385 | static inline bool btrfs_root_dead(const struct btrfs_root *root) |
521e0546 | 2386 | { |
49547068 | 2387 | /* Byte-swap the constant at compile time, root_item::flags is LE */ |
521e0546 DS |
2388 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; |
2389 | } | |
2390 | ||
7a163608 FM |
2391 | static inline u64 btrfs_root_id(const struct btrfs_root *root) |
2392 | { | |
2393 | return root->root_key.objectid; | |
2394 | } | |
2395 | ||
af31f5e5 CM |
2396 | /* struct btrfs_root_backup */ |
2397 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2398 | tree_root, 64); | |
2399 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2400 | tree_root_gen, 64); | |
2401 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2402 | tree_root_level, 8); | |
2403 | ||
2404 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2405 | chunk_root, 64); | |
2406 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2407 | chunk_root_gen, 64); | |
2408 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2409 | chunk_root_level, 8); | |
2410 | ||
2411 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2412 | extent_root, 64); | |
2413 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2414 | extent_root_gen, 64); | |
2415 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2416 | extent_root_level, 8); | |
2417 | ||
2418 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2419 | fs_root, 64); | |
2420 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2421 | fs_root_gen, 64); | |
2422 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2423 | fs_root_level, 8); | |
2424 | ||
2425 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2426 | dev_root, 64); | |
2427 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2428 | dev_root_gen, 64); | |
2429 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2430 | dev_root_level, 8); | |
2431 | ||
2432 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2433 | csum_root, 64); | |
2434 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2435 | csum_root_gen, 64); | |
2436 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2437 | csum_root_level, 8); | |
2438 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2439 | total_bytes, 64); | |
2440 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2441 | bytes_used, 64); | |
2442 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2443 | num_devices, 64); | |
2444 | ||
9c54e80d JB |
2445 | /* |
2446 | * For extent tree v2 we overload the extent root with the block group root, as | |
2447 | * we will have multiple extent roots. | |
2448 | */ | |
2449 | BTRFS_SETGET_STACK_FUNCS(backup_block_group_root, struct btrfs_root_backup, | |
2450 | extent_root, 64); | |
2451 | BTRFS_SETGET_STACK_FUNCS(backup_block_group_root_gen, struct btrfs_root_backup, | |
2452 | extent_root_gen, 64); | |
2453 | BTRFS_SETGET_STACK_FUNCS(backup_block_group_root_level, | |
2454 | struct btrfs_root_backup, extent_root_level, 8); | |
2455 | ||
0940ebf6 ID |
2456 | /* struct btrfs_balance_item */ |
2457 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2458 | |
1cbb1f45 JM |
2459 | static inline void btrfs_balance_data(const struct extent_buffer *eb, |
2460 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2461 | struct btrfs_disk_balance_args *ba) |
2462 | { | |
2463 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2464 | } | |
2465 | ||
2466 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
1cbb1f45 JM |
2467 | struct btrfs_balance_item *bi, |
2468 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2469 | { |
2470 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2471 | } | |
2472 | ||
1cbb1f45 JM |
2473 | static inline void btrfs_balance_meta(const struct extent_buffer *eb, |
2474 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2475 | struct btrfs_disk_balance_args *ba) |
2476 | { | |
2477 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2478 | } | |
2479 | ||
2480 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
1cbb1f45 JM |
2481 | struct btrfs_balance_item *bi, |
2482 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2483 | { |
2484 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2485 | } | |
2486 | ||
1cbb1f45 JM |
2487 | static inline void btrfs_balance_sys(const struct extent_buffer *eb, |
2488 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2489 | struct btrfs_disk_balance_args *ba) |
2490 | { | |
2491 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2492 | } | |
2493 | ||
2494 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
1cbb1f45 JM |
2495 | struct btrfs_balance_item *bi, |
2496 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2497 | { |
2498 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2499 | } | |
2500 | ||
2501 | static inline void | |
2502 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
1cbb1f45 | 2503 | const struct btrfs_disk_balance_args *disk) |
0940ebf6 ID |
2504 | { |
2505 | memset(cpu, 0, sizeof(*cpu)); | |
2506 | ||
2507 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2508 | cpu->usage = le64_to_cpu(disk->usage); | |
2509 | cpu->devid = le64_to_cpu(disk->devid); | |
2510 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2511 | cpu->pend = le64_to_cpu(disk->pend); | |
2512 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2513 | cpu->vend = le64_to_cpu(disk->vend); | |
2514 | cpu->target = le64_to_cpu(disk->target); | |
2515 | cpu->flags = le64_to_cpu(disk->flags); | |
7d824b6f | 2516 | cpu->limit = le64_to_cpu(disk->limit); |
ed0df618 DS |
2517 | cpu->stripes_min = le32_to_cpu(disk->stripes_min); |
2518 | cpu->stripes_max = le32_to_cpu(disk->stripes_max); | |
0940ebf6 ID |
2519 | } |
2520 | ||
2521 | static inline void | |
2522 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
1cbb1f45 | 2523 | const struct btrfs_balance_args *cpu) |
0940ebf6 ID |
2524 | { |
2525 | memset(disk, 0, sizeof(*disk)); | |
2526 | ||
2527 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2528 | disk->usage = cpu_to_le64(cpu->usage); | |
2529 | disk->devid = cpu_to_le64(cpu->devid); | |
2530 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2531 | disk->pend = cpu_to_le64(cpu->pend); | |
2532 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2533 | disk->vend = cpu_to_le64(cpu->vend); | |
2534 | disk->target = cpu_to_le64(cpu->target); | |
2535 | disk->flags = cpu_to_le64(cpu->flags); | |
7d824b6f | 2536 | disk->limit = cpu_to_le64(cpu->limit); |
ed0df618 DS |
2537 | disk->stripes_min = cpu_to_le32(cpu->stripes_min); |
2538 | disk->stripes_max = cpu_to_le32(cpu->stripes_max); | |
0940ebf6 ID |
2539 | } |
2540 | ||
2541 | /* struct btrfs_super_block */ | |
db94535d | 2542 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2543 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2544 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2545 | generation, 64); | |
2546 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2547 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2548 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2549 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2550 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2551 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2552 | root_level, 8); | |
0b86a832 CM |
2553 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2554 | chunk_root, 64); | |
2555 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2556 | chunk_root_level, 8); |
2557 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2558 | log_root, 64); | |
2559 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, | |
2560 | log_root_level, 8); | |
db94535d CM |
2561 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2562 | total_bytes, 64); | |
2563 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2564 | bytes_used, 64); | |
5f39d397 CM |
2565 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2566 | sectorsize, 32); | |
2567 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2568 | nodesize, 32); | |
87ee04eb CM |
2569 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2570 | stripesize, 32); | |
5f39d397 CM |
2571 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2572 | root_dir_objectid, 64); | |
8a4b83cc CM |
2573 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2574 | num_devices, 64); | |
f2b636e8 JB |
2575 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2576 | compat_flags, 64); | |
2577 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2578 | compat_ro_flags, 64); |
f2b636e8 JB |
2579 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2580 | incompat_flags, 64); | |
607d432d JB |
2581 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2582 | csum_type, 16); | |
0af3d00b JB |
2583 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2584 | cache_generation, 64); | |
3cae210f | 2585 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2586 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2587 | uuid_tree_generation, 64); | |
9c54e80d JB |
2588 | BTRFS_SETGET_STACK_FUNCS(super_block_group_root, struct btrfs_super_block, |
2589 | block_group_root, 64); | |
2590 | BTRFS_SETGET_STACK_FUNCS(super_block_group_root_generation, | |
2591 | struct btrfs_super_block, | |
2592 | block_group_root_generation, 64); | |
2593 | BTRFS_SETGET_STACK_FUNCS(super_block_group_root_level, struct btrfs_super_block, | |
2594 | block_group_root_level, 8); | |
607d432d | 2595 | |
af024ed2 JT |
2596 | int btrfs_super_csum_size(const struct btrfs_super_block *s); |
2597 | const char *btrfs_super_csum_name(u16 csum_type); | |
b4e967be | 2598 | const char *btrfs_super_csum_driver(u16 csum_type); |
604997b4 | 2599 | size_t __attribute_const__ btrfs_get_num_csums(void); |
f7cea56c | 2600 | |
2e635a27 | 2601 | |
851cd173 LB |
2602 | /* |
2603 | * The leaf data grows from end-to-front in the node. | |
2604 | * this returns the address of the start of the last item, | |
2605 | * which is the stop of the leaf data stack | |
2606 | */ | |
8f881e8c | 2607 | static inline unsigned int leaf_data_end(const struct extent_buffer *leaf) |
851cd173 LB |
2608 | { |
2609 | u32 nr = btrfs_header_nritems(leaf); | |
2610 | ||
2611 | if (nr == 0) | |
8f881e8c | 2612 | return BTRFS_LEAF_DATA_SIZE(leaf->fs_info); |
3212fa14 | 2613 | return btrfs_item_offset(leaf, nr - 1); |
851cd173 LB |
2614 | } |
2615 | ||
5f39d397 | 2616 | /* struct btrfs_file_extent_item */ |
203f44c5 QW |
2617 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_type, struct btrfs_file_extent_item, |
2618 | type, 8); | |
3cae210f QW |
2619 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2620 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2621 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2622 | struct btrfs_file_extent_item, offset, 64); | |
2623 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2624 | struct btrfs_file_extent_item, generation, 64); | |
2625 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2626 | struct btrfs_file_extent_item, num_bytes, 64); | |
203f44c5 QW |
2627 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_ram_bytes, |
2628 | struct btrfs_file_extent_item, ram_bytes, 64); | |
e20d6c5b JB |
2629 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2630 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2631 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2632 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2633 | |
d397712b | 2634 | static inline unsigned long |
1cbb1f45 | 2635 | btrfs_file_extent_inline_start(const struct btrfs_file_extent_item *e) |
236454df | 2636 | { |
7ec20afb | 2637 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
236454df CM |
2638 | } |
2639 | ||
2640 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2641 | { | |
7ec20afb | 2642 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
9f5fae2f CM |
2643 | } |
2644 | ||
203f44c5 | 2645 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); |
db94535d CM |
2646 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2647 | disk_bytenr, 64); | |
5f39d397 CM |
2648 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2649 | generation, 64); | |
db94535d CM |
2650 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2651 | disk_num_bytes, 64); | |
5f39d397 CM |
2652 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2653 | offset, 64); | |
db94535d CM |
2654 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2655 | num_bytes, 64); | |
c8b97818 CM |
2656 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2657 | ram_bytes, 64); | |
2658 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2659 | compression, 8); | |
2660 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2661 | encryption, 8); | |
2662 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2663 | other_encoding, 16); | |
2664 | ||
c8b97818 CM |
2665 | /* |
2666 | * this returns the number of bytes used by the item on disk, minus the | |
2667 | * size of any extent headers. If a file is compressed on disk, this is | |
2668 | * the compressed size | |
2669 | */ | |
1cbb1f45 JM |
2670 | static inline u32 btrfs_file_extent_inline_item_len( |
2671 | const struct extent_buffer *eb, | |
437bd07e | 2672 | int nr) |
c8b97818 | 2673 | { |
3212fa14 | 2674 | return btrfs_item_size(eb, nr) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
c8b97818 | 2675 | } |
9f5fae2f | 2676 | |
630dc772 AJ |
2677 | /* btrfs_qgroup_status_item */ |
2678 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2679 | generation, 64); | |
2680 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2681 | version, 64); | |
2682 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2683 | flags, 64); | |
2f232036 JS |
2684 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
2685 | rescan, 64); | |
630dc772 AJ |
2686 | |
2687 | /* btrfs_qgroup_info_item */ | |
2688 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2689 | generation, 64); | |
2690 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2691 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2692 | rfer_cmpr, 64); | |
2693 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2694 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2695 | excl_cmpr, 64); | |
2696 | ||
2697 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2698 | struct btrfs_qgroup_info_item, generation, 64); | |
2699 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2700 | rfer, 64); | |
2701 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2702 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2703 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2704 | excl, 64); | |
2705 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2706 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2707 | ||
2708 | /* btrfs_qgroup_limit_item */ | |
2709 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2710 | flags, 64); | |
2711 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2712 | max_rfer, 64); | |
2713 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2714 | max_excl, 64); | |
2715 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2716 | rsv_rfer, 64); | |
2717 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2718 | rsv_excl, 64); | |
2719 | ||
a2bff640 SB |
2720 | /* btrfs_dev_replace_item */ |
2721 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
2722 | struct btrfs_dev_replace_item, src_devid, 64); | |
2723 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
2724 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
2725 | 64); | |
2726 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
2727 | replace_state, 64); | |
2728 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
2729 | time_started, 64); | |
2730 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
2731 | time_stopped, 64); | |
2732 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
2733 | num_write_errors, 64); | |
2734 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
2735 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
2736 | 64); | |
2737 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
2738 | cursor_left, 64); | |
2739 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
2740 | cursor_right, 64); | |
2741 | ||
2742 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
2743 | struct btrfs_dev_replace_item, src_devid, 64); | |
2744 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
2745 | struct btrfs_dev_replace_item, | |
2746 | cont_reading_from_srcdev_mode, 64); | |
2747 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
2748 | struct btrfs_dev_replace_item, replace_state, 64); | |
2749 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
2750 | struct btrfs_dev_replace_item, time_started, 64); | |
2751 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
2752 | struct btrfs_dev_replace_item, time_stopped, 64); | |
2753 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
2754 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
2755 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
2756 | struct btrfs_dev_replace_item, | |
2757 | num_uncorrectable_read_errors, 64); | |
2758 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
2759 | struct btrfs_dev_replace_item, cursor_left, 64); | |
2760 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
2761 | struct btrfs_dev_replace_item, cursor_right, 64); | |
2762 | ||
4beb1b8b CM |
2763 | /* helper function to cast into the data area of the leaf. */ |
2764 | #define btrfs_item_ptr(leaf, slot, type) \ | |
3d9ec8c4 | 2765 | ((type *)(BTRFS_LEAF_DATA_OFFSET + \ |
3212fa14 | 2766 | btrfs_item_offset(leaf, slot))) |
5f39d397 CM |
2767 | |
2768 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
3d9ec8c4 | 2769 | ((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \ |
3212fa14 | 2770 | btrfs_item_offset(leaf, slot))) |
4beb1b8b | 2771 | |
65019df8 JT |
2772 | static inline u32 btrfs_crc32c(u32 crc, const void *address, unsigned length) |
2773 | { | |
2774 | return crc32c(crc, address, length); | |
2775 | } | |
2776 | ||
2777 | static inline void btrfs_crc32c_final(u32 crc, u8 *result) | |
2778 | { | |
2779 | put_unaligned_le32(~crc, result); | |
2780 | } | |
2781 | ||
9678c543 NB |
2782 | static inline u64 btrfs_name_hash(const char *name, int len) |
2783 | { | |
2784 | return crc32c((u32)~1, name, len); | |
2785 | } | |
2786 | ||
2787 | /* | |
2788 | * Figure the key offset of an extended inode ref | |
2789 | */ | |
2790 | static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name, | |
2791 | int len) | |
2792 | { | |
2793 | return (u64) crc32c(parent_objectid, name, len); | |
2794 | } | |
2795 | ||
3b16a4e3 JB |
2796 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2797 | { | |
c62d2555 | 2798 | return mapping_gfp_constraint(mapping, ~__GFP_FS); |
3b16a4e3 JB |
2799 | } |
2800 | ||
b18c6685 | 2801 | /* extent-tree.c */ |
28f75a0e | 2802 | |
167ce953 | 2803 | enum btrfs_inline_ref_type { |
bbe339cc DS |
2804 | BTRFS_REF_TYPE_INVALID, |
2805 | BTRFS_REF_TYPE_BLOCK, | |
2806 | BTRFS_REF_TYPE_DATA, | |
2807 | BTRFS_REF_TYPE_ANY, | |
167ce953 LB |
2808 | }; |
2809 | ||
2810 | int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb, | |
2811 | struct btrfs_extent_inline_ref *iref, | |
2812 | enum btrfs_inline_ref_type is_data); | |
0785a9aa | 2813 | u64 hash_extent_data_ref(u64 root_objectid, u64 owner, u64 offset); |
167ce953 | 2814 | |
a89ce08c CH |
2815 | static inline u8 *btrfs_csum_ptr(const struct btrfs_fs_info *fs_info, u8 *csums, |
2816 | u64 offset) | |
2817 | { | |
2818 | u64 offset_in_sectors = offset >> fs_info->sectorsize_bits; | |
2819 | ||
2820 | return csums + offset_in_sectors * fs_info->csum_size; | |
2821 | } | |
2822 | ||
fe5ecbe8 | 2823 | /* |
143823cf | 2824 | * Take the number of bytes to be checksummed and figure out how many leaves |
fe5ecbe8 DS |
2825 | * it would require to store the csums for that many bytes. |
2826 | */ | |
2827 | static inline u64 btrfs_csum_bytes_to_leaves( | |
2828 | const struct btrfs_fs_info *fs_info, u64 csum_bytes) | |
2829 | { | |
2830 | const u64 num_csums = csum_bytes >> fs_info->sectorsize_bits; | |
2831 | ||
2832 | return DIV_ROUND_UP_ULL(num_csums, fs_info->csums_per_leaf); | |
2833 | } | |
28f75a0e | 2834 | |
2bd36e7b JB |
2835 | /* |
2836 | * Use this if we would be adding new items, as we could split nodes as we cow | |
2837 | * down the tree. | |
2838 | */ | |
2839 | static inline u64 btrfs_calc_insert_metadata_size(struct btrfs_fs_info *fs_info, | |
2840 | unsigned num_items) | |
16cdcec7 | 2841 | { |
70e7af24 | 2842 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * 2 * num_items; |
07127184 JB |
2843 | } |
2844 | ||
2845 | /* | |
2bd36e7b JB |
2846 | * Doing a truncate or a modification won't result in new nodes or leaves, just |
2847 | * what we need for COW. | |
07127184 | 2848 | */ |
2bd36e7b | 2849 | static inline u64 btrfs_calc_metadata_size(struct btrfs_fs_info *fs_info, |
07127184 JB |
2850 | unsigned num_items) |
2851 | { | |
70e7af24 | 2852 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items; |
16cdcec7 MX |
2853 | } |
2854 | ||
6f410d1b JB |
2855 | int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info, |
2856 | u64 start, u64 num_bytes); | |
32da5386 | 2857 | void btrfs_free_excluded_extents(struct btrfs_block_group *cache); |
56bec294 | 2858 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
c79a70b1 | 2859 | unsigned long count); |
31890da0 JB |
2860 | void btrfs_cleanup_ref_head_accounting(struct btrfs_fs_info *fs_info, |
2861 | struct btrfs_delayed_ref_root *delayed_refs, | |
2862 | struct btrfs_delayed_ref_head *head); | |
2ff7e61e | 2863 | int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len); |
a22285a6 | 2864 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2ff7e61e | 2865 | struct btrfs_fs_info *fs_info, u64 bytenr, |
3173a18f | 2866 | u64 offset, int metadata, u64 *refs, u64 *flags); |
b25c36f8 NB |
2867 | int btrfs_pin_extent(struct btrfs_trans_handle *trans, u64 bytenr, u64 num, |
2868 | int reserved); | |
9fce5704 | 2869 | int btrfs_pin_extent_for_log_replay(struct btrfs_trans_handle *trans, |
e688b725 | 2870 | u64 bytenr, u64 num_bytes); |
bcdc428c | 2871 | int btrfs_exclude_logged_extents(struct extent_buffer *eb); |
e4c3b2dc | 2872 | int btrfs_cross_ref_exist(struct btrfs_root *root, |
1a89f173 FM |
2873 | u64 objectid, u64 offset, u64 bytenr, bool strict, |
2874 | struct btrfs_path *path); | |
4d75f8a9 | 2875 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
310712b2 OS |
2876 | struct btrfs_root *root, |
2877 | u64 parent, u64 root_objectid, | |
2878 | const struct btrfs_disk_key *key, | |
2879 | int level, u64 hint, | |
9631e4cc JB |
2880 | u64 empty_size, |
2881 | enum btrfs_lock_nesting nest); | |
f0486c68 | 2882 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
7a163608 | 2883 | u64 root_id, |
f0486c68 | 2884 | struct extent_buffer *buf, |
5581a51a | 2885 | u64 parent, int last_ref); |
5d4f98a2 | 2886 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2887 | struct btrfs_root *root, u64 owner, |
5846a3c2 QW |
2888 | u64 offset, u64 ram_bytes, |
2889 | struct btrfs_key *ins); | |
5d4f98a2 | 2890 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2891 | u64 root_objectid, u64 owner, u64 offset, |
2892 | struct btrfs_key *ins); | |
18513091 | 2893 | int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes, |
00361589 | 2894 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, |
e570fd27 | 2895 | struct btrfs_key *ins, int is_data, int delalloc); |
e089f05c | 2896 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2897 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2898 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2899 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2900 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2fe6a5a1 | 2901 | struct extent_buffer *eb, u64 flags, int level); |
ffd4bb2a | 2902 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_ref *ref); |
5d4f98a2 | 2903 | |
2ff7e61e JM |
2904 | int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info, |
2905 | u64 start, u64 len, int delalloc); | |
7bfc1007 | 2906 | int btrfs_pin_reserved_extent(struct btrfs_trans_handle *trans, u64 start, |
a0fbf736 | 2907 | u64 len); |
5ead2dd0 | 2908 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans); |
b18c6685 | 2909 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
82fa113f | 2910 | struct btrfs_ref *generic_ref); |
5d4f98a2 | 2911 | |
4184ea7f | 2912 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 | 2913 | |
fd7fb634 QW |
2914 | /* |
2915 | * Different levels for to flush space when doing space reservations. | |
2916 | * | |
2917 | * The higher the level, the more methods we try to reclaim space. | |
2918 | */ | |
08e007d2 MX |
2919 | enum btrfs_reserve_flush_enum { |
2920 | /* If we are in the transaction, we can't flush anything.*/ | |
2921 | BTRFS_RESERVE_NO_FLUSH, | |
fd7fb634 | 2922 | |
08e007d2 | 2923 | /* |
fd7fb634 QW |
2924 | * Flush space by: |
2925 | * - Running delayed inode items | |
2926 | * - Allocating a new chunk | |
08e007d2 MX |
2927 | */ |
2928 | BTRFS_RESERVE_FLUSH_LIMIT, | |
fd7fb634 QW |
2929 | |
2930 | /* | |
2931 | * Flush space by: | |
2932 | * - Running delayed inode items | |
2933 | * - Running delayed refs | |
2934 | * - Running delalloc and waiting for ordered extents | |
2935 | * - Allocating a new chunk | |
2936 | */ | |
d3984c90 | 2937 | BTRFS_RESERVE_FLUSH_EVICT, |
fd7fb634 QW |
2938 | |
2939 | /* | |
2940 | * Flush space by above mentioned methods and by: | |
2941 | * - Running delayed iputs | |
1a9fd417 | 2942 | * - Committing transaction |
fd7fb634 | 2943 | * |
1a9fd417 | 2944 | * Can be interrupted by a fatal signal. |
fd7fb634 | 2945 | */ |
058e6d1d JB |
2946 | BTRFS_RESERVE_FLUSH_DATA, |
2947 | BTRFS_RESERVE_FLUSH_FREE_SPACE_INODE, | |
08e007d2 | 2948 | BTRFS_RESERVE_FLUSH_ALL, |
fd7fb634 QW |
2949 | |
2950 | /* | |
2951 | * Pretty much the same as FLUSH_ALL, but can also steal space from | |
2952 | * global rsv. | |
2953 | * | |
1a9fd417 | 2954 | * Can be interrupted by a fatal signal. |
fd7fb634 | 2955 | */ |
7f9fe614 | 2956 | BTRFS_RESERVE_FLUSH_ALL_STEAL, |
08e007d2 MX |
2957 | }; |
2958 | ||
f376df2b JB |
2959 | enum btrfs_flush_state { |
2960 | FLUSH_DELAYED_ITEMS_NR = 1, | |
2961 | FLUSH_DELAYED_ITEMS = 2, | |
413df725 JB |
2962 | FLUSH_DELAYED_REFS_NR = 3, |
2963 | FLUSH_DELAYED_REFS = 4, | |
2964 | FLUSH_DELALLOC = 5, | |
2965 | FLUSH_DELALLOC_WAIT = 6, | |
03fe78cc JB |
2966 | FLUSH_DELALLOC_FULL = 7, |
2967 | ALLOC_CHUNK = 8, | |
2968 | ALLOC_CHUNK_FORCE = 9, | |
2969 | RUN_DELAYED_IPUTS = 10, | |
2970 | COMMIT_TRANS = 11, | |
f376df2b JB |
2971 | }; |
2972 | ||
d5c12070 MX |
2973 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
2974 | struct btrfs_block_rsv *rsv, | |
c4c129db | 2975 | int nitems, bool use_global_rsv); |
e85fde51 | 2976 | void btrfs_subvolume_release_metadata(struct btrfs_root *root, |
7775c818 | 2977 | struct btrfs_block_rsv *rsv); |
8702ba93 | 2978 | void btrfs_delalloc_release_extents(struct btrfs_inode *inode, u64 num_bytes); |
8b62f87b | 2979 | |
28c9b1e7 | 2980 | int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes, |
d4135134 | 2981 | u64 disk_num_bytes, bool noflush); |
6d07bcec | 2982 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
2ff7e61e | 2983 | int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info, |
acce952b | 2984 | u64 start, u64 end); |
2ff7e61e | 2985 | int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, |
1edb647b | 2986 | u64 num_bytes, u64 *actual_bytes); |
2ff7e61e | 2987 | int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range); |
acce952b | 2988 | |
c59021f8 | 2989 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
2990 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
2991 | struct btrfs_fs_info *fs_info); | |
ea14b57f DS |
2992 | int btrfs_start_write_no_snapshotting(struct btrfs_root *root); |
2993 | void btrfs_end_write_no_snapshotting(struct btrfs_root *root); | |
0bc19f90 | 2994 | void btrfs_wait_for_snapshot_creation(struct btrfs_root *root); |
a5ed9182 | 2995 | |
dee26a9f | 2996 | /* ctree.c */ |
310712b2 | 2997 | int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key, |
e3b83361 | 2998 | int *slot); |
e1f60a65 | 2999 | int __pure btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2); |
0b86a832 CM |
3000 | int btrfs_previous_item(struct btrfs_root *root, |
3001 | struct btrfs_path *path, u64 min_objectid, | |
3002 | int type); | |
ade2e0b3 WS |
3003 | int btrfs_previous_extent_item(struct btrfs_root *root, |
3004 | struct btrfs_path *path, u64 min_objectid); | |
b7a0365e DD |
3005 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
3006 | struct btrfs_path *path, | |
310712b2 | 3007 | const struct btrfs_key *new_key); |
925baedd | 3008 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
e7a84565 | 3009 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 3010 | struct btrfs_key *key, int lowest_level, |
de78b51a | 3011 | u64 min_trans); |
3f157a2f | 3012 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 3013 | struct btrfs_path *path, |
3f157a2f | 3014 | u64 min_trans); |
4b231ae4 DS |
3015 | struct extent_buffer *btrfs_read_node_slot(struct extent_buffer *parent, |
3016 | int slot); | |
3017 | ||
5f39d397 CM |
3018 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
3019 | struct btrfs_root *root, struct extent_buffer *buf, | |
3020 | struct extent_buffer *parent, int parent_slot, | |
9631e4cc JB |
3021 | struct extent_buffer **cow_ret, |
3022 | enum btrfs_lock_nesting nest); | |
be20aa9d CM |
3023 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
3024 | struct btrfs_root *root, | |
3025 | struct extent_buffer *buf, | |
3026 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
3027 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
3028 | struct extent_buffer *buf); | |
c71dd880 | 3029 | void btrfs_extend_item(struct btrfs_path *path, u32 data_size); |
78ac4f9e | 3030 | void btrfs_truncate_item(struct btrfs_path *path, u32 new_size, int from_end); |
459931ec CM |
3031 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
3032 | struct btrfs_root *root, | |
3033 | struct btrfs_path *path, | |
310712b2 | 3034 | const struct btrfs_key *new_key, |
459931ec | 3035 | unsigned long split_offset); |
ad48fd75 YZ |
3036 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
3037 | struct btrfs_root *root, | |
3038 | struct btrfs_path *path, | |
310712b2 | 3039 | const struct btrfs_key *new_key); |
e33d5c3d KN |
3040 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
3041 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
310712b2 OS |
3042 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3043 | const struct btrfs_key *key, struct btrfs_path *p, | |
3044 | int ins_len, int cow); | |
3045 | int btrfs_search_old_slot(struct btrfs_root *root, const struct btrfs_key *key, | |
5d9e75c4 | 3046 | struct btrfs_path *p, u64 time_seq); |
2f38b3e1 | 3047 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
310712b2 OS |
3048 | const struct btrfs_key *key, |
3049 | struct btrfs_path *p, int find_higher, | |
3050 | int return_any); | |
6702ed49 | 3051 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 3052 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 3053 | int start_slot, u64 *last_ret, |
a6b6e75e | 3054 | struct btrfs_key *progress); |
b3b4aa74 | 3055 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
3056 | struct btrfs_path *btrfs_alloc_path(void); |
3057 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 3058 | |
85e21bac CM |
3059 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3060 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
3061 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
3062 | struct btrfs_root *root, | |
3063 | struct btrfs_path *path) | |
3064 | { | |
3065 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
3066 | } | |
3067 | ||
b7ef5f3a FM |
3068 | /* |
3069 | * Describes a batch of items to insert in a btree. This is used by | |
f0641656 | 3070 | * btrfs_insert_empty_items(). |
b7ef5f3a FM |
3071 | */ |
3072 | struct btrfs_item_batch { | |
3073 | /* | |
3074 | * Pointer to an array containing the keys of the items to insert (in | |
3075 | * sorted order). | |
3076 | */ | |
3077 | const struct btrfs_key *keys; | |
3078 | /* Pointer to an array containing the data size for each item to insert. */ | |
3079 | const u32 *data_sizes; | |
3080 | /* | |
3081 | * The sum of data sizes for all items. The caller can compute this while | |
3082 | * setting up the data_sizes array, so it ends up being more efficient | |
3083 | * than having btrfs_insert_empty_items() or setup_item_for_insert() | |
3084 | * doing it, as it would avoid an extra loop over a potentially large | |
3085 | * array, and in the case of setup_item_for_insert(), we would be doing | |
3086 | * it while holding a write lock on a leaf and often on upper level nodes | |
3087 | * too, unnecessarily increasing the size of a critical section. | |
3088 | */ | |
3089 | u32 total_data_size; | |
3090 | /* Size of the keys and data_sizes arrays (number of items in the batch). */ | |
3091 | int nr; | |
3092 | }; | |
3093 | ||
f0641656 FM |
3094 | void btrfs_setup_item_for_insert(struct btrfs_root *root, |
3095 | struct btrfs_path *path, | |
3096 | const struct btrfs_key *key, | |
3097 | u32 data_size); | |
310712b2 OS |
3098 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3099 | const struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
3100 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
3101 | struct btrfs_root *root, | |
3102 | struct btrfs_path *path, | |
b7ef5f3a | 3103 | const struct btrfs_item_batch *batch); |
9c58309d CM |
3104 | |
3105 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
3106 | struct btrfs_root *root, | |
3107 | struct btrfs_path *path, | |
310712b2 | 3108 | const struct btrfs_key *key, |
9c58309d CM |
3109 | u32 data_size) |
3110 | { | |
b7ef5f3a FM |
3111 | struct btrfs_item_batch batch; |
3112 | ||
3113 | batch.keys = key; | |
3114 | batch.data_sizes = &data_size; | |
3115 | batch.total_data_size = data_size; | |
3116 | batch.nr = 1; | |
3117 | ||
3118 | return btrfs_insert_empty_items(trans, root, path, &batch); | |
9c58309d CM |
3119 | } |
3120 | ||
16e7549f | 3121 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
3122 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
3123 | u64 time_seq); | |
0ff40a91 MPS |
3124 | |
3125 | int btrfs_search_backwards(struct btrfs_root *root, struct btrfs_key *key, | |
3126 | struct btrfs_path *path); | |
3127 | ||
62142be3 GN |
3128 | int btrfs_get_next_valid_item(struct btrfs_root *root, struct btrfs_key *key, |
3129 | struct btrfs_path *path); | |
3130 | ||
3131 | /* | |
3132 | * Search in @root for a given @key, and store the slot found in @found_key. | |
3133 | * | |
3134 | * @root: The root node of the tree. | |
3135 | * @key: The key we are looking for. | |
3136 | * @found_key: Will hold the found item. | |
3137 | * @path: Holds the current slot/leaf. | |
3138 | * @iter_ret: Contains the value returned from btrfs_search_slot or | |
3139 | * btrfs_get_next_valid_item, whichever was executed last. | |
3140 | * | |
3141 | * The @iter_ret is an output variable that will contain the return value of | |
3142 | * btrfs_search_slot, if it encountered an error, or the value returned from | |
3143 | * btrfs_get_next_valid_item otherwise. That return value can be 0, if a valid | |
3144 | * slot was found, 1 if there were no more leaves, and <0 if there was an error. | |
3145 | * | |
3146 | * It's recommended to use a separate variable for iter_ret and then use it to | |
3147 | * set the function return value so there's no confusion of the 0/1/errno | |
3148 | * values stemming from btrfs_search_slot. | |
3149 | */ | |
3150 | #define btrfs_for_each_slot(root, key, found_key, path, iter_ret) \ | |
3151 | for (iter_ret = btrfs_search_slot(NULL, (root), (key), (path), 0, 0); \ | |
3152 | (iter_ret) >= 0 && \ | |
3153 | (iter_ret = btrfs_get_next_valid_item((root), (found_key), (path))) == 0; \ | |
3154 | (path)->slots[0]++ \ | |
3155 | ) | |
3156 | ||
1c8f52a5 AB |
3157 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
3158 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
3159 | { |
3160 | ++p->slots[0]; | |
3161 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 3162 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
3163 | return 0; |
3164 | } | |
809d6902 DS |
3165 | |
3166 | /* | |
3167 | * Search the tree again to find a leaf with greater keys. | |
3168 | * | |
3169 | * Returns 0 if it found something or 1 if there are no greater leaves. | |
3170 | * Returns < 0 on error. | |
3171 | */ | |
3172 | static inline int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path) | |
3173 | { | |
3174 | return btrfs_next_old_leaf(root, path, 0); | |
3175 | } | |
3176 | ||
1c8f52a5 AB |
3177 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
3178 | { | |
3179 | return btrfs_next_old_item(root, p, 0); | |
3180 | } | |
e902baac | 3181 | int btrfs_leaf_free_space(struct extent_buffer *leaf); |
0078a9f9 NB |
3182 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, int update_ref, |
3183 | int for_reloc); | |
f82d02d9 YZ |
3184 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
3185 | struct btrfs_root *root, | |
3186 | struct extent_buffer *node, | |
3187 | struct extent_buffer *parent); | |
7841cb28 DS |
3188 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
3189 | { | |
3190 | /* | |
afcdd129 | 3191 | * Do it this way so we only ever do one test_bit in the normal case. |
7841cb28 | 3192 | */ |
afcdd129 JB |
3193 | if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) { |
3194 | if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags)) | |
3195 | return 2; | |
3196 | return 1; | |
3197 | } | |
3198 | return 0; | |
7841cb28 | 3199 | } |
babbf170 MX |
3200 | |
3201 | /* | |
3202 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
3203 | * anything except sleeping. This function is used to check the status of | |
3204 | * the fs. | |
a0a1db70 FM |
3205 | * We check for BTRFS_FS_STATE_RO to avoid races with a concurrent remount, |
3206 | * since setting and checking for SB_RDONLY in the superblock's flags is not | |
3207 | * atomic. | |
babbf170 | 3208 | */ |
2ff7e61e | 3209 | static inline int btrfs_need_cleaner_sleep(struct btrfs_fs_info *fs_info) |
babbf170 | 3210 | { |
a0a1db70 FM |
3211 | return test_bit(BTRFS_FS_STATE_RO, &fs_info->fs_state) || |
3212 | btrfs_fs_closing(fs_info); | |
3213 | } | |
3214 | ||
3215 | static inline void btrfs_set_sb_rdonly(struct super_block *sb) | |
3216 | { | |
3217 | sb->s_flags |= SB_RDONLY; | |
3218 | set_bit(BTRFS_FS_STATE_RO, &btrfs_sb(sb)->fs_state); | |
3219 | } | |
3220 | ||
3221 | static inline void btrfs_clear_sb_rdonly(struct super_block *sb) | |
3222 | { | |
3223 | sb->s_flags &= ~SB_RDONLY; | |
3224 | clear_bit(BTRFS_FS_STATE_RO, &btrfs_sb(sb)->fs_state); | |
babbf170 MX |
3225 | } |
3226 | ||
dee26a9f | 3227 | /* root-item.c */ |
6025c19f LF |
3228 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, u64 root_id, |
3229 | u64 ref_id, u64 dirid, u64 sequence, const char *name, | |
3230 | int name_len); | |
3ee1c553 LF |
3231 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, u64 root_id, |
3232 | u64 ref_id, u64 dirid, u64 *sequence, const char *name, | |
3233 | int name_len); | |
1cd5447e | 3234 | int btrfs_del_root(struct btrfs_trans_handle *trans, |
ab9ce7d4 | 3235 | const struct btrfs_key *key); |
310712b2 OS |
3236 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3237 | const struct btrfs_key *key, | |
3238 | struct btrfs_root_item *item); | |
b45a9d8b JM |
3239 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
3240 | struct btrfs_root *root, | |
3241 | struct btrfs_key *key, | |
3242 | struct btrfs_root_item *item); | |
310712b2 | 3243 | int btrfs_find_root(struct btrfs_root *root, const struct btrfs_key *search_key, |
cb517eab MX |
3244 | struct btrfs_path *path, struct btrfs_root_item *root_item, |
3245 | struct btrfs_key *root_key); | |
6bccf3ab | 3246 | int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info); |
bf5f32ec MF |
3247 | void btrfs_set_root_node(struct btrfs_root_item *item, |
3248 | struct extent_buffer *node); | |
08fe4db1 | 3249 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
3250 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
3251 | struct btrfs_root *root); | |
08fe4db1 | 3252 | |
07b30a49 | 3253 | /* uuid-tree.c */ |
cdb345a8 | 3254 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, u8 *uuid, u8 type, |
07b30a49 | 3255 | u64 subid); |
d1957791 | 3256 | int btrfs_uuid_tree_remove(struct btrfs_trans_handle *trans, u8 *uuid, u8 type, |
07b30a49 | 3257 | u64 subid); |
560b7a4a | 3258 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info); |
07b30a49 | 3259 | |
dee26a9f | 3260 | /* dir-item.c */ |
9c52057c CM |
3261 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
3262 | const char *name, int name_len); | |
684572df | 3263 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, const char *name, |
8e7611cf | 3264 | int name_len, struct btrfs_inode *dir, |
aec7477b | 3265 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
3266 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
3267 | struct btrfs_root *root, | |
3268 | struct btrfs_path *path, u64 dir, | |
3269 | const char *name, int name_len, | |
3270 | int mod); | |
3271 | struct btrfs_dir_item * | |
3272 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
3273 | struct btrfs_root *root, | |
3274 | struct btrfs_path *path, u64 dir, | |
8dcbc261 | 3275 | u64 index, const char *name, int name_len, |
7e38180e | 3276 | int mod); |
4df27c4d YZ |
3277 | struct btrfs_dir_item * |
3278 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
3279 | struct btrfs_path *path, u64 dirid, | |
3280 | const char *name, int name_len); | |
7e38180e CM |
3281 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
3282 | struct btrfs_root *root, | |
3283 | struct btrfs_path *path, | |
3284 | struct btrfs_dir_item *di); | |
5103e947 | 3285 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
3286 | struct btrfs_root *root, |
3287 | struct btrfs_path *path, u64 objectid, | |
3288 | const char *name, u16 name_len, | |
3289 | const void *data, u16 data_len); | |
5103e947 JB |
3290 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
3291 | struct btrfs_root *root, | |
3292 | struct btrfs_path *path, u64 dir, | |
3293 | const char *name, u16 name_len, | |
3294 | int mod); | |
2ff7e61e | 3295 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info, |
5f5bc6b1 FM |
3296 | struct btrfs_path *path, |
3297 | const char *name, | |
3298 | int name_len); | |
7b128766 JB |
3299 | |
3300 | /* orphan.c */ | |
3301 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3302 | struct btrfs_root *root, u64 offset); | |
3303 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3304 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3305 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3306 | |
dee26a9f | 3307 | /* file-item.c */ |
459931ec | 3308 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
40e046ac | 3309 | struct btrfs_root *root, u64 bytenr, u64 len); |
6275193e | 3310 | blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u8 *dst); |
b18c6685 | 3311 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3312 | struct btrfs_root *root, |
3313 | u64 objectid, u64 pos, | |
3314 | u64 disk_offset, u64 disk_num_bytes, | |
3315 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3316 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3317 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3318 | struct btrfs_root *root, | |
3319 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3320 | u64 bytenr, int mod); |
065631f6 | 3321 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3322 | struct btrfs_root *root, |
e6dcd2dc | 3323 | struct btrfs_ordered_sum *sums); |
bd242a08 | 3324 | blk_status_t btrfs_csum_one_bio(struct btrfs_inode *inode, struct bio *bio, |
e331f6b1 | 3325 | u64 offset, bool one_ordered); |
a2de733c AJ |
3326 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3327 | struct list_head *list, int search_commit); | |
9cdc5124 | 3328 | void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode, |
7ffbb598 FM |
3329 | const struct btrfs_path *path, |
3330 | struct btrfs_file_extent_item *fi, | |
3331 | const bool new_inline, | |
3332 | struct extent_map *em); | |
41a2ee75 JB |
3333 | int btrfs_inode_clear_file_extent_range(struct btrfs_inode *inode, u64 start, |
3334 | u64 len); | |
3335 | int btrfs_inode_set_file_extent_range(struct btrfs_inode *inode, u64 start, | |
3336 | u64 len); | |
76aea537 | 3337 | void btrfs_inode_safe_disk_i_size_write(struct btrfs_inode *inode, u64 new_i_size); |
a5eeb3d1 | 3338 | u64 btrfs_file_extent_end(const struct btrfs_path *path); |
7ffbb598 | 3339 | |
39279cc3 | 3340 | /* inode.c */ |
c93104e7 CH |
3341 | void btrfs_submit_data_write_bio(struct inode *inode, struct bio *bio, int mirror_num); |
3342 | void btrfs_submit_data_read_bio(struct inode *inode, struct bio *bio, | |
3343 | int mirror_num, enum btrfs_compression_type compress_type); | |
ae643a74 QW |
3344 | int btrfs_check_sector_csum(struct btrfs_fs_info *fs_info, struct page *page, |
3345 | u32 pgoff, u8 *csum, const u8 * const csum_expected); | |
81bd9328 CH |
3346 | int btrfs_check_data_csum(struct inode *inode, struct btrfs_bio *bbio, |
3347 | u32 bio_offset, struct page *page, u32 pgoff); | |
c3a3b19b QW |
3348 | unsigned int btrfs_verify_data_csum(struct btrfs_bio *bbio, |
3349 | u32 bio_offset, struct page *page, | |
3350 | u64 start, u64 end); | |
7959bd44 CH |
3351 | int btrfs_check_data_csum(struct inode *inode, struct btrfs_bio *bbio, |
3352 | u32 bio_offset, struct page *page, u32 pgoff); | |
fc4f21b1 | 3353 | struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode, |
4ab47a8d | 3354 | u64 start, u64 len); |
00361589 | 3355 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 | 3356 | u64 *orig_start, u64 *orig_block_len, |
a84d5d42 | 3357 | u64 *ram_bytes, bool strict); |
4881ee5a | 3358 | |
2b877331 NB |
3359 | void __btrfs_del_delalloc_inode(struct btrfs_root *root, |
3360 | struct btrfs_inode *inode); | |
3de4586c | 3361 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
70ddc553 | 3362 | int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index); |
e02119d5 | 3363 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
4ec5934e | 3364 | struct btrfs_inode *dir, struct btrfs_inode *inode, |
e02119d5 CM |
3365 | const char *name, int name_len); |
3366 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
db0a669f | 3367 | struct btrfs_inode *parent_inode, struct btrfs_inode *inode, |
e02119d5 | 3368 | const char *name, int name_len, int add_backref, u64 index); |
f60a2364 | 3369 | int btrfs_delete_subvolume(struct inode *dir, struct dentry *dentry); |
217f42eb NB |
3370 | int btrfs_truncate_block(struct btrfs_inode *inode, loff_t from, loff_t len, |
3371 | int front); | |
e02119d5 | 3372 | |
f9baa501 | 3373 | int btrfs_start_delalloc_snapshot(struct btrfs_root *root, bool in_reclaim_context); |
9db4dc24 | 3374 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, long nr, |
3d45f221 | 3375 | bool in_reclaim_context); |
c2566f22 | 3376 | int btrfs_set_extent_delalloc(struct btrfs_inode *inode, u64 start, u64 end, |
e3b8a485 | 3377 | unsigned int extra_bits, |
330a5827 | 3378 | struct extent_state **cached_state); |
3538d68d OS |
3379 | struct btrfs_new_inode_args { |
3380 | /* Input */ | |
3381 | struct inode *dir; | |
3382 | struct dentry *dentry; | |
3383 | struct inode *inode; | |
3384 | bool orphan; | |
3385 | bool subvol; | |
3386 | ||
3387 | /* | |
3388 | * Output from btrfs_new_inode_prepare(), input to | |
3389 | * btrfs_create_new_inode(). | |
3390 | */ | |
3391 | struct posix_acl *default_acl; | |
3392 | struct posix_acl *acl; | |
3393 | }; | |
3394 | int btrfs_new_inode_prepare(struct btrfs_new_inode_args *args, | |
3395 | unsigned int *trans_num_items); | |
3396 | int btrfs_create_new_inode(struct btrfs_trans_handle *trans, | |
caae78e0 | 3397 | struct btrfs_new_inode_args *args); |
3538d68d | 3398 | void btrfs_new_inode_args_destroy(struct btrfs_new_inode_args *args); |
a1fd0c35 OS |
3399 | struct inode *btrfs_new_subvol_inode(struct user_namespace *mnt_userns, |
3400 | struct inode *dir); | |
c629732d | 3401 | void btrfs_set_delalloc_extent(struct inode *inode, struct extent_state *state, |
6d92b304 | 3402 | u32 bits); |
a36bb5f9 | 3403 | void btrfs_clear_delalloc_extent(struct inode *inode, |
6d92b304 | 3404 | struct extent_state *state, u32 bits); |
5c848198 NB |
3405 | void btrfs_merge_delalloc_extent(struct inode *inode, struct extent_state *new, |
3406 | struct extent_state *other); | |
abbb55f4 NB |
3407 | void btrfs_split_delalloc_extent(struct inode *inode, |
3408 | struct extent_state *orig, u64 split); | |
d2a91064 | 3409 | void btrfs_set_range_writeback(struct btrfs_inode *inode, u64 start, u64 end); |
a528a241 | 3410 | vm_fault_t btrfs_page_mkwrite(struct vm_fault *vmf); |
bd555975 | 3411 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3412 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3413 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3414 | void btrfs_destroy_inode(struct inode *inode); | |
26602cab | 3415 | void btrfs_free_inode(struct inode *inode); |
45321ac5 | 3416 | int btrfs_drop_inode(struct inode *inode); |
f5c29bd9 | 3417 | int __init btrfs_init_cachep(void); |
e67c718b | 3418 | void __cold btrfs_destroy_cachep(void); |
0202e83f | 3419 | struct inode *btrfs_iget_path(struct super_block *s, u64 ino, |
4c66e0d4 | 3420 | struct btrfs_root *root, struct btrfs_path *path); |
0202e83f | 3421 | struct inode *btrfs_iget(struct super_block *s, u64 ino, struct btrfs_root *root); |
fc4f21b1 | 3422 | struct extent_map *btrfs_get_extent(struct btrfs_inode *inode, |
de2c6615 | 3423 | struct page *page, size_t pg_offset, |
39b07b5d | 3424 | u64 start, u64 end); |
a52d9a80 | 3425 | int btrfs_update_inode(struct btrfs_trans_handle *trans, |
9a56fcd1 | 3426 | struct btrfs_root *root, struct btrfs_inode *inode); |
be6aef60 | 3427 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
729f7961 | 3428 | struct btrfs_root *root, struct btrfs_inode *inode); |
73f2e545 NB |
3429 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, |
3430 | struct btrfs_inode *inode); | |
66b4ffd1 | 3431 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
b06359a3 | 3432 | int btrfs_cont_expand(struct btrfs_inode *inode, loff_t oldsize, loff_t size); |
24bbcf04 | 3433 | void btrfs_add_delayed_iput(struct inode *inode); |
2ff7e61e | 3434 | void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info); |
034f784d | 3435 | int btrfs_wait_on_delayed_iputs(struct btrfs_fs_info *fs_info); |
efa56464 YZ |
3436 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3437 | u64 start, u64 num_bytes, u64 min_size, | |
3438 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3439 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3440 | struct btrfs_trans_handle *trans, int mode, | |
3441 | u64 start, u64 num_bytes, u64 min_size, | |
3442 | loff_t actual_len, u64 *alloc_hint); | |
98456b9c | 3443 | int btrfs_run_delalloc_range(struct btrfs_inode *inode, struct page *locked_page, |
5eaad97a NB |
3444 | u64 start, u64 end, int *page_started, unsigned long *nr_written, |
3445 | struct writeback_control *wbc); | |
a129ffb8 | 3446 | int btrfs_writepage_cow_fixup(struct page *page); |
38a39ac7 QW |
3447 | void btrfs_writepage_endio_finish_ordered(struct btrfs_inode *inode, |
3448 | struct page *page, u64 start, | |
25c1252a | 3449 | u64 end, bool uptodate); |
3ea4dc5b OS |
3450 | int btrfs_encoded_io_compression_from_extent(struct btrfs_fs_info *fs_info, |
3451 | int compress_type); | |
3452 | int btrfs_encoded_read_regular_fill_pages(struct btrfs_inode *inode, | |
3453 | u64 file_offset, u64 disk_bytenr, | |
3454 | u64 disk_io_size, | |
3455 | struct page **pages); | |
1881fba8 OS |
3456 | ssize_t btrfs_encoded_read(struct kiocb *iocb, struct iov_iter *iter, |
3457 | struct btrfs_ioctl_encoded_io_args *encoded); | |
7c0c7269 OS |
3458 | ssize_t btrfs_do_encoded_write(struct kiocb *iocb, struct iov_iter *from, |
3459 | const struct btrfs_ioctl_encoded_io_args *encoded); | |
1881fba8 | 3460 | |
36e8c622 CH |
3461 | ssize_t btrfs_dio_rw(struct kiocb *iocb, struct iov_iter *iter, size_t done_before); |
3462 | ||
82d339d9 | 3463 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 | 3464 | |
a14b78ad GR |
3465 | /* Inode locking type flags, by default the exclusive lock is taken */ |
3466 | #define BTRFS_ILOCK_SHARED (1U << 0) | |
3467 | #define BTRFS_ILOCK_TRY (1U << 1) | |
8318ba79 | 3468 | #define BTRFS_ILOCK_MMAP (1U << 2) |
a14b78ad GR |
3469 | |
3470 | int btrfs_inode_lock(struct inode *inode, unsigned int ilock_flags); | |
3471 | void btrfs_inode_unlock(struct inode *inode, unsigned int ilock_flags); | |
2766ff61 FM |
3472 | void btrfs_update_inode_bytes(struct btrfs_inode *inode, |
3473 | const u64 add_bytes, | |
3474 | const u64 del_bytes); | |
63c34cb4 | 3475 | void btrfs_assert_inode_range_clean(struct btrfs_inode *inode, u64 start, u64 end); |
f46b5a66 CH |
3476 | |
3477 | /* ioctl.c */ | |
3478 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
4c63c245 | 3479 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
97fc2977 MS |
3480 | int btrfs_fileattr_get(struct dentry *dentry, struct fileattr *fa); |
3481 | int btrfs_fileattr_set(struct user_namespace *mnt_userns, | |
3482 | struct dentry *dentry, struct fileattr *fa); | |
d5131b65 | 3483 | int btrfs_ioctl_get_supported_features(void __user *arg); |
7b6a221e | 3484 | void btrfs_sync_inode_flags_to_i_flags(struct inode *inode); |
e1f60a65 | 3485 | int __pure btrfs_is_empty_uuid(u8 *uuid); |
1ccc2e8a | 3486 | int btrfs_defrag_file(struct inode *inode, struct file_ra_state *ra, |
4cb5300b | 3487 | struct btrfs_ioctl_defrag_range_args *range, |
1ccc2e8a | 3488 | u64 newer_than, unsigned long max_to_defrag); |
008ef096 DS |
3489 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3490 | struct btrfs_ioctl_space_info *space); | |
3491 | void btrfs_update_ioctl_balance_args(struct btrfs_fs_info *fs_info, | |
35a3621b | 3492 | struct btrfs_ioctl_balance_args *bargs); |
c3e1f96c GR |
3493 | bool btrfs_exclop_start(struct btrfs_fs_info *fs_info, |
3494 | enum btrfs_exclusive_operation type); | |
578bda9e DS |
3495 | bool btrfs_exclop_start_try_lock(struct btrfs_fs_info *fs_info, |
3496 | enum btrfs_exclusive_operation type); | |
3497 | void btrfs_exclop_start_unlock(struct btrfs_fs_info *fs_info); | |
c3e1f96c | 3498 | void btrfs_exclop_finish(struct btrfs_fs_info *fs_info); |
efc0e69c NB |
3499 | void btrfs_exclop_balance(struct btrfs_fs_info *fs_info, |
3500 | enum btrfs_exclusive_operation op); | |
3501 | ||
35a3621b | 3502 | |
39279cc3 | 3503 | /* file.c */ |
f5c29bd9 | 3504 | int __init btrfs_auto_defrag_init(void); |
e67c718b | 3505 | void __cold btrfs_auto_defrag_exit(void); |
4cb5300b | 3506 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
558732df | 3507 | struct btrfs_inode *inode, u32 extent_thresh); |
4cb5300b | 3508 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); |
26176e7c | 3509 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3510 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
dcdbc059 | 3511 | void btrfs_drop_extent_cache(struct btrfs_inode *inode, u64 start, u64 end, |
7014cdb4 | 3512 | int skip_pinned); |
828c0950 | 3513 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 | 3514 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
5893dfb9 FM |
3515 | struct btrfs_root *root, struct btrfs_inode *inode, |
3516 | struct btrfs_drop_extents_args *args); | |
bfc78479 NB |
3517 | int btrfs_replace_file_extents(struct btrfs_inode *inode, |
3518 | struct btrfs_path *path, const u64 start, | |
3519 | const u64 end, | |
bf385648 | 3520 | struct btrfs_replace_extent_info *extent_info, |
690a5dbf | 3521 | struct btrfs_trans_handle **trans_out); |
d899e052 | 3522 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
7a6d7067 | 3523 | struct btrfs_inode *inode, u64 start, u64 end); |
7c0c7269 OS |
3524 | ssize_t btrfs_do_write_iter(struct kiocb *iocb, struct iov_iter *from, |
3525 | const struct btrfs_ioctl_encoded_io_args *encoded); | |
6bf13c0c | 3526 | int btrfs_release_file(struct inode *inode, struct file *file); |
088545f6 | 3527 | int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages, |
2ff7e61e | 3528 | size_t num_pages, loff_t pos, size_t write_bytes, |
aa8c1a41 | 3529 | struct extent_state **cached, bool noreserve); |
728404da | 3530 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
38d37aa9 QW |
3531 | int btrfs_check_nocow_lock(struct btrfs_inode *inode, loff_t pos, |
3532 | size_t *write_bytes); | |
3533 | void btrfs_check_nocow_unlock(struct btrfs_inode *inode); | |
6bf13c0c | 3534 | |
6702ed49 CM |
3535 | /* tree-defrag.c */ |
3536 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3537 | struct btrfs_root *root); |
58176a96 | 3538 | |
edbd8d4e | 3539 | /* super.c */ |
2ff7e61e | 3540 | int btrfs_parse_options(struct btrfs_fs_info *info, char *options, |
96da0919 | 3541 | unsigned long new_flags); |
6bf13c0c | 3542 | int btrfs_sync_fs(struct super_block *sb, int wait); |
c0c907a4 MPS |
3543 | char *btrfs_get_subvol_name_from_objectid(struct btrfs_fs_info *fs_info, |
3544 | u64 subvol_objectid); | |
533574c6 | 3545 | |
e67c718b | 3546 | static inline __printf(2, 3) __cold |
2fd57fcb AB |
3547 | void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
3548 | { | |
3549 | } | |
3550 | ||
b0a66a31 JL |
3551 | #ifdef CONFIG_PRINTK_INDEX |
3552 | ||
3553 | #define btrfs_printk(fs_info, fmt, args...) \ | |
3554 | do { \ | |
3555 | printk_index_subsys_emit("%sBTRFS %s (device %s): ", NULL, fmt); \ | |
3556 | _btrfs_printk(fs_info, fmt, ##args); \ | |
3557 | } while (0) | |
3558 | ||
3559 | __printf(2, 3) | |
3560 | __cold | |
3561 | void _btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); | |
3562 | ||
3563 | #elif defined(CONFIG_PRINTK) | |
3564 | ||
3565 | #define btrfs_printk(fs_info, fmt, args...) \ | |
3566 | _btrfs_printk(fs_info, fmt, ##args) | |
3567 | ||
533574c6 | 3568 | __printf(2, 3) |
e67c718b | 3569 | __cold |
b0a66a31 JL |
3570 | void _btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
3571 | ||
533574c6 | 3572 | #else |
b0a66a31 | 3573 | |
2fd57fcb AB |
3574 | #define btrfs_printk(fs_info, fmt, args...) \ |
3575 | btrfs_no_printk(fs_info, fmt, ##args) | |
533574c6 JP |
3576 | #endif |
3577 | ||
c2cf52eb SK |
3578 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3579 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3580 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3581 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3582 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3583 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3584 | #define btrfs_err(fs_info, fmt, args...) \ | |
3585 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3586 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3587 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3588 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3589 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3590 | #define btrfs_info(fs_info, fmt, args...) \ | |
3591 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3592 | |
08a84e25 DS |
3593 | /* |
3594 | * Wrappers that use printk_in_rcu | |
3595 | */ | |
3596 | #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ | |
3597 | btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3598 | #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ | |
3599 | btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3600 | #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ | |
3601 | btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3602 | #define btrfs_err_in_rcu(fs_info, fmt, args...) \ | |
3603 | btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3604 | #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ | |
3605 | btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3606 | #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ | |
3607 | btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3608 | #define btrfs_info_in_rcu(fs_info, fmt, args...) \ | |
3609 | btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3610 | ||
24aa6b41 DS |
3611 | /* |
3612 | * Wrappers that use a ratelimited printk_in_rcu | |
3613 | */ | |
3614 | #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ | |
3615 | btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3616 | #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ | |
3617 | btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3618 | #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ | |
3619 | btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3620 | #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ | |
3621 | btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3622 | #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ | |
3623 | btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3624 | #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ | |
3625 | btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3626 | #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ | |
3627 | btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3628 | ||
1dd6d7ca DS |
3629 | /* |
3630 | * Wrappers that use a ratelimited printk | |
3631 | */ | |
3632 | #define btrfs_emerg_rl(fs_info, fmt, args...) \ | |
3633 | btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) | |
3634 | #define btrfs_alert_rl(fs_info, fmt, args...) \ | |
3635 | btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) | |
3636 | #define btrfs_crit_rl(fs_info, fmt, args...) \ | |
3637 | btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) | |
3638 | #define btrfs_err_rl(fs_info, fmt, args...) \ | |
3639 | btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) | |
3640 | #define btrfs_warn_rl(fs_info, fmt, args...) \ | |
3641 | btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) | |
3642 | #define btrfs_notice_rl(fs_info, fmt, args...) \ | |
3643 | btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) | |
3644 | #define btrfs_info_rl(fs_info, fmt, args...) \ | |
3645 | btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) | |
897a41b1 JM |
3646 | |
3647 | #if defined(CONFIG_DYNAMIC_DEBUG) | |
3648 | #define btrfs_debug(fs_info, fmt, args...) \ | |
afe1a715 RV |
3649 | _dynamic_func_call_no_desc(fmt, btrfs_printk, \ |
3650 | fs_info, KERN_DEBUG fmt, ##args) | |
3651 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ | |
3652 | _dynamic_func_call_no_desc(fmt, btrfs_printk_in_rcu, \ | |
3653 | fs_info, KERN_DEBUG fmt, ##args) | |
897a41b1 | 3654 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
afe1a715 RV |
3655 | _dynamic_func_call_no_desc(fmt, btrfs_printk_rl_in_rcu, \ |
3656 | fs_info, KERN_DEBUG fmt, ##args) | |
3657 | #define btrfs_debug_rl(fs_info, fmt, args...) \ | |
3658 | _dynamic_func_call_no_desc(fmt, btrfs_printk_ratelimited, \ | |
3659 | fs_info, KERN_DEBUG fmt, ##args) | |
897a41b1 | 3660 | #elif defined(DEBUG) |
c2cf52eb SK |
3661 | #define btrfs_debug(fs_info, fmt, args...) \ |
3662 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3663 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3664 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3665 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3666 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3667 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3668 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3669 | #else |
3670 | #define btrfs_debug(fs_info, fmt, args...) \ | |
c01f5f96 | 3671 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
08a84e25 | 3672 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
b6fdfbff | 3673 | btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) |
24aa6b41 | 3674 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
b6fdfbff | 3675 | btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) |
1dd6d7ca | 3676 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
c01f5f96 | 3677 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
27a0dd61 | 3678 | #endif |
c2cf52eb | 3679 | |
08a84e25 DS |
3680 | #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ |
3681 | do { \ | |
3682 | rcu_read_lock(); \ | |
3683 | btrfs_printk(fs_info, fmt, ##args); \ | |
b6fdfbff MT |
3684 | rcu_read_unlock(); \ |
3685 | } while (0) | |
3686 | ||
3687 | #define btrfs_no_printk_in_rcu(fs_info, fmt, args...) \ | |
3688 | do { \ | |
3689 | rcu_read_lock(); \ | |
3690 | btrfs_no_printk(fs_info, fmt, ##args); \ | |
08a84e25 DS |
3691 | rcu_read_unlock(); \ |
3692 | } while (0) | |
3693 | ||
24aa6b41 DS |
3694 | #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ |
3695 | do { \ | |
3696 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
3697 | DEFAULT_RATELIMIT_INTERVAL, \ | |
3698 | DEFAULT_RATELIMIT_BURST); \ | |
3699 | if (__ratelimit(&_rs)) \ | |
3700 | btrfs_printk(fs_info, fmt, ##args); \ | |
3701 | } while (0) | |
3702 | ||
3703 | #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ | |
3704 | do { \ | |
3705 | rcu_read_lock(); \ | |
3706 | btrfs_printk_ratelimited(fs_info, fmt, ##args); \ | |
3707 | rcu_read_unlock(); \ | |
3708 | } while (0) | |
3709 | ||
68c467cb DS |
3710 | #ifdef CONFIG_BTRFS_ASSERT |
3711 | __cold __noreturn | |
3712 | static inline void assertfail(const char *expr, const char *file, int line) | |
2e17c7c6 | 3713 | { |
68c467cb DS |
3714 | pr_err("assertion failed: %s, in %s:%d\n", expr, file, line); |
3715 | BUG(); | |
2e17c7c6 JB |
3716 | } |
3717 | ||
68c467cb DS |
3718 | #define ASSERT(expr) \ |
3719 | (likely(expr) ? (void)0 : assertfail(#expr, __FILE__, __LINE__)) | |
3720 | ||
3721 | #else | |
3722 | static inline void assertfail(const char *expr, const char* file, int line) { } | |
3723 | #define ASSERT(expr) (void)(expr) | |
3724 | #endif | |
2e17c7c6 | 3725 | |
e9306ad4 QW |
3726 | #if BITS_PER_LONG == 32 |
3727 | #define BTRFS_32BIT_MAX_FILE_SIZE (((u64)ULONG_MAX + 1) << PAGE_SHIFT) | |
3728 | /* | |
3729 | * The warning threshold is 5/8th of the MAX_LFS_FILESIZE that limits the logical | |
3730 | * addresses of extents. | |
3731 | * | |
3732 | * For 4K page size it's about 10T, for 64K it's 160T. | |
3733 | */ | |
3734 | #define BTRFS_32BIT_EARLY_WARN_THRESHOLD (BTRFS_32BIT_MAX_FILE_SIZE * 5 / 8) | |
3735 | void btrfs_warn_32bit_limit(struct btrfs_fs_info *fs_info); | |
3736 | void btrfs_err_32bit_limit(struct btrfs_fs_info *fs_info); | |
3737 | #endif | |
3738 | ||
884b07d0 QW |
3739 | /* |
3740 | * Get the correct offset inside the page of extent buffer. | |
3741 | * | |
3742 | * @eb: target extent buffer | |
3743 | * @start: offset inside the extent buffer | |
3744 | * | |
3745 | * Will handle both sectorsize == PAGE_SIZE and sectorsize < PAGE_SIZE cases. | |
3746 | */ | |
3747 | static inline size_t get_eb_offset_in_page(const struct extent_buffer *eb, | |
3748 | unsigned long offset) | |
3749 | { | |
3750 | /* | |
3751 | * For sectorsize == PAGE_SIZE case, eb->start will always be aligned | |
3752 | * to PAGE_SIZE, thus adding it won't cause any difference. | |
3753 | * | |
3754 | * For sectorsize < PAGE_SIZE, we must only read the data that belongs | |
3755 | * to the eb, thus we have to take the eb->start into consideration. | |
3756 | */ | |
3757 | return offset_in_page(offset + eb->start); | |
3758 | } | |
3759 | ||
3760 | static inline unsigned long get_eb_page_index(unsigned long offset) | |
3761 | { | |
3762 | /* | |
3763 | * For sectorsize == PAGE_SIZE case, plain >> PAGE_SHIFT is enough. | |
3764 | * | |
3765 | * For sectorsize < PAGE_SIZE case, we only support 64K PAGE_SIZE, | |
3766 | * and have ensured that all tree blocks are contained in one page, | |
3767 | * thus we always get index == 0. | |
3768 | */ | |
3769 | return offset >> PAGE_SHIFT; | |
3770 | } | |
3771 | ||
f8f591df JT |
3772 | /* |
3773 | * Use that for functions that are conditionally exported for sanity tests but | |
3774 | * otherwise static | |
3775 | */ | |
3776 | #ifndef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
3777 | #define EXPORT_FOR_TESTS static | |
3778 | #else | |
3779 | #define EXPORT_FOR_TESTS | |
3780 | #endif | |
3781 | ||
ba3c2b19 NB |
3782 | __cold |
3783 | static inline void btrfs_print_v0_err(struct btrfs_fs_info *fs_info) | |
3784 | { | |
3785 | btrfs_err(fs_info, | |
3786 | "Unsupported V0 extent filesystem detected. Aborting. Please re-create your filesystem with a newer kernel"); | |
3787 | } | |
3788 | ||
533574c6 | 3789 | __printf(5, 6) |
c0d19e2b | 3790 | __cold |
34d97007 | 3791 | void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3792 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3793 | |
4143cb8b | 3794 | const char * __attribute_const__ btrfs_decode_error(int errno); |
533574c6 | 3795 | |
c0d19e2b | 3796 | __cold |
49b25e05 | 3797 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
66642832 | 3798 | const char *function, |
49b25e05 JM |
3799 | unsigned int line, int errno); |
3800 | ||
c5f4ccb2 AJ |
3801 | /* |
3802 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3803 | * detected, that way the exact line number is reported. | |
3804 | */ | |
66642832 | 3805 | #define btrfs_abort_transaction(trans, errno) \ |
c5f4ccb2 AJ |
3806 | do { \ |
3807 | /* Report first abort since mount */ \ | |
3808 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ | |
66642832 | 3809 | &((trans)->fs_info->fs_state))) { \ |
f95ebdbe | 3810 | if ((errno) != -EIO && (errno) != -EROFS) { \ |
e5d6b12f CM |
3811 | WARN(1, KERN_DEBUG \ |
3812 | "BTRFS: Transaction aborted (error %d)\n", \ | |
3813 | (errno)); \ | |
3814 | } else { \ | |
71367b3f JM |
3815 | btrfs_debug((trans)->fs_info, \ |
3816 | "Transaction aborted (error %d)", \ | |
e5d6b12f CM |
3817 | (errno)); \ |
3818 | } \ | |
c5f4ccb2 | 3819 | } \ |
66642832 | 3820 | __btrfs_abort_transaction((trans), __func__, \ |
c5f4ccb2 AJ |
3821 | __LINE__, (errno)); \ |
3822 | } while (0) | |
3823 | ||
b0a66a31 JL |
3824 | #ifdef CONFIG_PRINTK_INDEX |
3825 | ||
c5f4ccb2 | 3826 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ |
b0a66a31 JL |
3827 | do { \ |
3828 | printk_index_subsys_emit( \ | |
3829 | "BTRFS: error (device %s%s) in %s:%d: errno=%d %s", \ | |
3830 | KERN_CRIT, fmt); \ | |
3831 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ | |
3832 | (errno), fmt, ##args); \ | |
c5f4ccb2 AJ |
3833 | } while (0) |
3834 | ||
b0a66a31 JL |
3835 | #else |
3836 | ||
3837 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ | |
3838 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ | |
3839 | (errno), fmt, ##args) | |
3840 | ||
3841 | #endif | |
3842 | ||
84961539 JB |
3843 | #define BTRFS_FS_ERROR(fs_info) (unlikely(test_bit(BTRFS_FS_STATE_ERROR, \ |
3844 | &(fs_info)->fs_state))) | |
40cdc509 FM |
3845 | #define BTRFS_FS_LOG_CLEANUP_ERROR(fs_info) \ |
3846 | (unlikely(test_bit(BTRFS_FS_STATE_LOG_CLEANUP_ERROR, \ | |
3847 | &(fs_info)->fs_state))) | |
84961539 | 3848 | |
c5f4ccb2 AJ |
3849 | __printf(5, 6) |
3850 | __cold | |
3851 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, | |
3852 | unsigned int line, int errno, const char *fmt, ...); | |
3853 | /* | |
3854 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3855 | * will panic(). Otherwise we BUG() here. | |
3856 | */ | |
3857 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3858 | do { \ | |
3859 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ | |
3860 | BUG(); \ | |
3861 | } while (0) | |
3862 | ||
3863 | ||
3864 | /* compatibility and incompatibility defines */ | |
3865 | ||
2b0ce2c2 | 3866 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
c9d713d5 DS |
3867 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt, \ |
3868 | #opt) | |
2b0ce2c2 MH |
3869 | |
3870 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
c9d713d5 | 3871 | u64 flag, const char* name) |
2b0ce2c2 MH |
3872 | { |
3873 | struct btrfs_super_block *disk_super; | |
3874 | u64 features; | |
3875 | ||
3876 | disk_super = fs_info->super_copy; | |
3877 | features = btrfs_super_incompat_flags(disk_super); | |
3878 | if (!(features & flag)) { | |
ceda0864 MX |
3879 | spin_lock(&fs_info->super_lock); |
3880 | features = btrfs_super_incompat_flags(disk_super); | |
3881 | if (!(features & flag)) { | |
3882 | features |= flag; | |
3883 | btrfs_set_super_incompat_flags(disk_super, features); | |
c9d713d5 DS |
3884 | btrfs_info(fs_info, |
3885 | "setting incompat feature flag for %s (0x%llx)", | |
3886 | name, flag); | |
ceda0864 MX |
3887 | } |
3888 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3889 | } |
3890 | } | |
3891 | ||
1abfbcdf | 3892 | #define btrfs_clear_fs_incompat(__fs_info, opt) \ |
c9d713d5 DS |
3893 | __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt, \ |
3894 | #opt) | |
1abfbcdf OS |
3895 | |
3896 | static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, | |
c9d713d5 | 3897 | u64 flag, const char* name) |
1abfbcdf OS |
3898 | { |
3899 | struct btrfs_super_block *disk_super; | |
3900 | u64 features; | |
3901 | ||
3902 | disk_super = fs_info->super_copy; | |
3903 | features = btrfs_super_incompat_flags(disk_super); | |
3904 | if (features & flag) { | |
3905 | spin_lock(&fs_info->super_lock); | |
3906 | features = btrfs_super_incompat_flags(disk_super); | |
3907 | if (features & flag) { | |
3908 | features &= ~flag; | |
3909 | btrfs_set_super_incompat_flags(disk_super, features); | |
c9d713d5 DS |
3910 | btrfs_info(fs_info, |
3911 | "clearing incompat feature flag for %s (0x%llx)", | |
3912 | name, flag); | |
1abfbcdf OS |
3913 | } |
3914 | spin_unlock(&fs_info->super_lock); | |
3915 | } | |
3916 | } | |
3917 | ||
3173a18f JB |
3918 | #define btrfs_fs_incompat(fs_info, opt) \ |
3919 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3920 | ||
9780c497 | 3921 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
3173a18f JB |
3922 | { |
3923 | struct btrfs_super_block *disk_super; | |
3924 | disk_super = fs_info->super_copy; | |
3925 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3926 | } | |
3927 | ||
1abfbcdf | 3928 | #define btrfs_set_fs_compat_ro(__fs_info, opt) \ |
c9d713d5 DS |
3929 | __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt, \ |
3930 | #opt) | |
1abfbcdf OS |
3931 | |
3932 | static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
c9d713d5 | 3933 | u64 flag, const char *name) |
1abfbcdf OS |
3934 | { |
3935 | struct btrfs_super_block *disk_super; | |
3936 | u64 features; | |
3937 | ||
3938 | disk_super = fs_info->super_copy; | |
3939 | features = btrfs_super_compat_ro_flags(disk_super); | |
3940 | if (!(features & flag)) { | |
3941 | spin_lock(&fs_info->super_lock); | |
3942 | features = btrfs_super_compat_ro_flags(disk_super); | |
3943 | if (!(features & flag)) { | |
3944 | features |= flag; | |
3945 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
c9d713d5 DS |
3946 | btrfs_info(fs_info, |
3947 | "setting compat-ro feature flag for %s (0x%llx)", | |
3948 | name, flag); | |
1abfbcdf OS |
3949 | } |
3950 | spin_unlock(&fs_info->super_lock); | |
3951 | } | |
3952 | } | |
3953 | ||
3954 | #define btrfs_clear_fs_compat_ro(__fs_info, opt) \ | |
c9d713d5 DS |
3955 | __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt, \ |
3956 | #opt) | |
1abfbcdf OS |
3957 | |
3958 | static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
c9d713d5 | 3959 | u64 flag, const char *name) |
1abfbcdf OS |
3960 | { |
3961 | struct btrfs_super_block *disk_super; | |
3962 | u64 features; | |
3963 | ||
3964 | disk_super = fs_info->super_copy; | |
3965 | features = btrfs_super_compat_ro_flags(disk_super); | |
3966 | if (features & flag) { | |
3967 | spin_lock(&fs_info->super_lock); | |
3968 | features = btrfs_super_compat_ro_flags(disk_super); | |
3969 | if (features & flag) { | |
3970 | features &= ~flag; | |
3971 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
c9d713d5 DS |
3972 | btrfs_info(fs_info, |
3973 | "clearing compat-ro feature flag for %s (0x%llx)", | |
3974 | name, flag); | |
1abfbcdf OS |
3975 | } |
3976 | spin_unlock(&fs_info->super_lock); | |
3977 | } | |
3978 | } | |
3979 | ||
3980 | #define btrfs_fs_compat_ro(fs_info, opt) \ | |
3981 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3982 | ||
3983 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) | |
3984 | { | |
3985 | struct btrfs_super_block *disk_super; | |
3986 | disk_super = fs_info->super_copy; | |
3987 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); | |
3988 | } | |
3989 | ||
33268eaf | 3990 | /* acl.c */ |
0eda294d | 3991 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
0cad6246 | 3992 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type, bool rcu); |
549c7297 CB |
3993 | int btrfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode, |
3994 | struct posix_acl *acl, int type); | |
3538d68d OS |
3995 | int __btrfs_set_acl(struct btrfs_trans_handle *trans, struct inode *inode, |
3996 | struct posix_acl *acl, int type); | |
9b89d95a | 3997 | #else |
ed8f3737 | 3998 | #define btrfs_get_acl NULL |
996a710d | 3999 | #define btrfs_set_acl NULL |
3538d68d OS |
4000 | static inline int __btrfs_set_acl(struct btrfs_trans_handle *trans, |
4001 | struct inode *inode, struct posix_acl *acl, | |
4002 | int type) | |
9b89d95a | 4003 | { |
3538d68d | 4004 | return -EOPNOTSUPP; |
9b89d95a | 4005 | } |
9b89d95a | 4006 | #endif |
0f9dd46c | 4007 | |
5d4f98a2 | 4008 | /* relocation.c */ |
6bccf3ab | 4009 | int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start); |
5d4f98a2 YZ |
4010 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, |
4011 | struct btrfs_root *root); | |
4012 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
4013 | struct btrfs_root *root); | |
7eefae6b | 4014 | int btrfs_recover_relocation(struct btrfs_fs_info *fs_info); |
7bfa9535 | 4015 | int btrfs_reloc_clone_csums(struct btrfs_inode *inode, u64 file_pos, u64 len); |
83d4cfd4 JB |
4016 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
4017 | struct btrfs_root *root, struct extent_buffer *buf, | |
4018 | struct extent_buffer *cow); | |
147d256e | 4019 | void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, |
3fd0a558 | 4020 | u64 *bytes_to_reserve); |
49b25e05 | 4021 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 4022 | struct btrfs_pending_snapshot *pending); |
726a3421 | 4023 | int btrfs_should_cancel_balance(struct btrfs_fs_info *fs_info); |
2433bea5 QW |
4024 | struct btrfs_root *find_reloc_root(struct btrfs_fs_info *fs_info, |
4025 | u64 bytenr); | |
55465730 | 4026 | int btrfs_should_ignore_reloc_root(struct btrfs_root *root); |
a2de733c AJ |
4027 | |
4028 | /* scrub.c */ | |
aa1b8cd4 SB |
4029 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
4030 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 4031 | int readonly, int is_dev_replace); |
2ff7e61e JM |
4032 | void btrfs_scrub_pause(struct btrfs_fs_info *fs_info); |
4033 | void btrfs_scrub_continue(struct btrfs_fs_info *fs_info); | |
aa1b8cd4 | 4034 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
163e97ee | 4035 | int btrfs_scrub_cancel_dev(struct btrfs_device *dev); |
2ff7e61e | 4036 | int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid, |
a2de733c | 4037 | struct btrfs_scrub_progress *progress); |
0966a7b1 QW |
4038 | static inline void btrfs_init_full_stripe_locks_tree( |
4039 | struct btrfs_full_stripe_locks_tree *locks_root) | |
4040 | { | |
4041 | locks_root->root = RB_ROOT; | |
4042 | mutex_init(&locks_root->lock); | |
4043 | } | |
c404e0dc MX |
4044 | |
4045 | /* dev-replace.c */ | |
4046 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
4047 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4245215d MX |
4048 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
4049 | ||
4050 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) | |
4051 | { | |
4052 | btrfs_bio_counter_sub(fs_info, 1); | |
4053 | } | |
a2de733c | 4054 | |
95a06077 JS |
4055 | static inline int is_fstree(u64 rootid) |
4056 | { | |
4057 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
e09fe2d2 QW |
4058 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
4059 | !btrfs_qgroup_level(rootid))) | |
95a06077 JS |
4060 | return 1; |
4061 | return 0; | |
4062 | } | |
210549eb DS |
4063 | |
4064 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
4065 | { | |
4066 | return signal_pending(current); | |
4067 | } | |
4068 | ||
14605409 BB |
4069 | /* verity.c */ |
4070 | #ifdef CONFIG_FS_VERITY | |
4071 | ||
4072 | extern const struct fsverity_operations btrfs_verityops; | |
4073 | int btrfs_drop_verity_items(struct btrfs_inode *inode); | |
4074 | ||
4075 | BTRFS_SETGET_FUNCS(verity_descriptor_encryption, struct btrfs_verity_descriptor_item, | |
4076 | encryption, 8); | |
4077 | BTRFS_SETGET_FUNCS(verity_descriptor_size, struct btrfs_verity_descriptor_item, | |
4078 | size, 64); | |
4079 | BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_encryption, | |
4080 | struct btrfs_verity_descriptor_item, encryption, 8); | |
4081 | BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_size, | |
4082 | struct btrfs_verity_descriptor_item, size, 64); | |
4083 | ||
4084 | #else | |
4085 | ||
4086 | static inline int btrfs_drop_verity_items(struct btrfs_inode *inode) | |
4087 | { | |
4088 | return 0; | |
4089 | } | |
4090 | ||
4091 | #endif | |
4092 | ||
aaedb55b JB |
4093 | /* Sanity test specific functions */ |
4094 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
4095 | void btrfs_test_destroy_inode(struct inode *inode); | |
f5ee5c9a | 4096 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) |
fccb84c9 | 4097 | { |
b2fa1154 DS |
4098 | return test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state); |
4099 | } | |
4100 | #else | |
4101 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) | |
4102 | { | |
fccb84c9 DS |
4103 | return 0; |
4104 | } | |
b2fa1154 | 4105 | #endif |
9888c340 | 4106 | |
b70f5097 NA |
4107 | static inline bool btrfs_is_zoned(const struct btrfs_fs_info *fs_info) |
4108 | { | |
8e010b3d | 4109 | return fs_info->zone_size > 0; |
b70f5097 NA |
4110 | } |
4111 | ||
7d7672bc NA |
4112 | /* |
4113 | * Count how many fs_info->max_extent_size cover the @size | |
4114 | */ | |
4115 | static inline u32 count_max_extents(struct btrfs_fs_info *fs_info, u64 size) | |
4116 | { | |
4117 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
4118 | if (!fs_info) | |
4119 | return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE); | |
4120 | #endif | |
4121 | ||
4122 | return div_u64(size + fs_info->max_extent_size - 1, fs_info->max_extent_size); | |
4123 | } | |
4124 | ||
37f00a6d JT |
4125 | static inline bool btrfs_is_data_reloc_root(const struct btrfs_root *root) |
4126 | { | |
4127 | return root->root_key.objectid == BTRFS_DATA_RELOC_TREE_OBJECTID; | |
4128 | } | |
4129 | ||
f57ad937 QW |
4130 | /* |
4131 | * We use page status Private2 to indicate there is an ordered extent with | |
4132 | * unfinished IO. | |
4133 | * | |
4134 | * Rename the Private2 accessors to Ordered, to improve readability. | |
4135 | */ | |
4136 | #define PageOrdered(page) PagePrivate2(page) | |
4137 | #define SetPageOrdered(page) SetPagePrivate2(page) | |
4138 | #define ClearPageOrdered(page) ClearPagePrivate2(page) | |
895586eb MWO |
4139 | #define folio_test_ordered(folio) folio_test_private_2(folio) |
4140 | #define folio_set_ordered(folio) folio_set_private_2(folio) | |
4141 | #define folio_clear_ordered(folio) folio_clear_private_2(folio) | |
f57ad937 | 4142 | |
eb60ceac | 4143 | #endif |