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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
dc17ff8f CM |
19 | #ifndef __BTRFS_CTREE__ |
20 | #define __BTRFS_CTREE__ | |
eb60ceac | 21 | |
6da6abae | 22 | #include <linux/version.h> |
810191ff CM |
23 | #include <linux/mm.h> |
24 | #include <linux/highmem.h> | |
e20d96d6 | 25 | #include <linux/fs.h> |
a2de733c | 26 | #include <linux/rwsem.h> |
58176a96 | 27 | #include <linux/completion.h> |
04160088 | 28 | #include <linux/backing-dev.h> |
e6dcd2dc | 29 | #include <linux/wait.h> |
5a0e3ad6 | 30 | #include <linux/slab.h> |
f8b18087 | 31 | #include <linux/kobject.h> |
1abe9b8a | 32 | #include <trace/events/btrfs.h> |
479965d6 | 33 | #include <asm/kmap_types.h> |
d1310b2e | 34 | #include "extent_io.h" |
5f39d397 | 35 | #include "extent_map.h" |
8b712842 | 36 | #include "async-thread.h" |
a2de733c | 37 | #include "ioctl.h" |
e20d96d6 | 38 | |
e089f05c | 39 | struct btrfs_trans_handle; |
79154b1b | 40 | struct btrfs_transaction; |
a22285a6 | 41 | struct btrfs_pending_snapshot; |
35b7e476 CM |
42 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
43 | extern struct kmem_cache *btrfs_transaction_cachep; | |
44 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 45 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 46 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 47 | struct btrfs_ordered_sum; |
e089f05c | 48 | |
2a7108ad | 49 | #define BTRFS_MAGIC "_BHRfS_M" |
eb60ceac | 50 | |
4008c04a | 51 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 52 | |
5d4f98a2 YZ |
53 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
54 | ||
5a3f23d5 CM |
55 | /* |
56 | * files bigger than this get some pre-flushing when they are added | |
57 | * to the ordered operations list. That way we limit the total | |
58 | * work done by the commit | |
59 | */ | |
60 | #define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024) | |
61 | ||
0b86a832 | 62 | /* holds pointers to all of the tree roots */ |
6407bf6d | 63 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
64 | |
65 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 66 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 67 | |
0b86a832 CM |
68 | /* |
69 | * chunk tree stores translations from logical -> physical block numbering | |
70 | * the super block points to the chunk tree | |
71 | */ | |
e085def2 | 72 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
73 | |
74 | /* | |
75 | * stores information about which areas of a given device are in use. | |
76 | * one per device. The tree of tree roots points to the device tree | |
77 | */ | |
e085def2 CM |
78 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
79 | ||
80 | /* one per subvolume, storing files and directories */ | |
81 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
82 | ||
83 | /* directory objectid inside the root tree */ | |
84 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 85 | |
d20f7043 CM |
86 | /* holds checksums of all the data extents */ |
87 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
88 | ||
7b128766 JB |
89 | /* orhpan objectid for tracking unlinked/truncated files */ |
90 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
91 | ||
e02119d5 CM |
92 | /* does write ahead logging to speed up fsyncs */ |
93 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
94 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
95 | ||
e4657689 ZY |
96 | /* for space balancing */ |
97 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
98 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
99 | ||
d20f7043 CM |
100 | /* |
101 | * extent checksums all have this objectid | |
102 | * this allows them to share the logging tree | |
103 | * for fsyncs | |
104 | */ | |
105 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
106 | ||
0af3d00b JB |
107 | /* For storing free space cache */ |
108 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL | |
109 | ||
31840ae1 ZY |
110 | /* dummy objectid represents multiple objectids */ |
111 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
112 | ||
0b86a832 | 113 | /* |
6527cdbe | 114 | * All files have objectids in this range. |
0b86a832 | 115 | */ |
f6dbff55 | 116 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 117 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 118 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 119 | |
0b86a832 CM |
120 | |
121 | /* | |
122 | * the device items go into the chunk tree. The key is in the form | |
123 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
124 | */ | |
125 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
126 | ||
4df27c4d YZ |
127 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
128 | ||
129 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 | |
130 | ||
e20d96d6 CM |
131 | /* |
132 | * we can actually store much bigger names, but lets not confuse the rest | |
133 | * of linux | |
134 | */ | |
135 | #define BTRFS_NAME_LEN 255 | |
136 | ||
f254e52c CM |
137 | /* 32 bytes in various csum fields */ |
138 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
139 | |
140 | /* csum types */ | |
141 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
142 | ||
143 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
144 | ||
509659cd | 145 | /* four bytes for CRC32 */ |
3954401f | 146 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 147 | |
fabb5681 CM |
148 | #define BTRFS_FT_UNKNOWN 0 |
149 | #define BTRFS_FT_REG_FILE 1 | |
150 | #define BTRFS_FT_DIR 2 | |
151 | #define BTRFS_FT_CHRDEV 3 | |
152 | #define BTRFS_FT_BLKDEV 4 | |
153 | #define BTRFS_FT_FIFO 5 | |
154 | #define BTRFS_FT_SOCK 6 | |
155 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
156 | #define BTRFS_FT_XATTR 8 |
157 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 158 | |
fec577fb | 159 | /* |
d4a78947 WF |
160 | * The key defines the order in the tree, and so it also defines (optimal) |
161 | * block layout. | |
162 | * | |
163 | * objectid corresponds to the inode number. | |
164 | * | |
165 | * type tells us things about the object, and is a kind of stream selector. | |
166 | * so for a given inode, keys with type of 1 might refer to the inode data, | |
167 | * type of 2 may point to file data in the btree and type == 3 may point to | |
168 | * extents. | |
fec577fb CM |
169 | * |
170 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
171 | * |
172 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
173 | * in cpu native order. Otherwise they are identical and their sizes | |
174 | * should be the same (ie both packed) | |
fec577fb | 175 | */ |
e2fa7227 CM |
176 | struct btrfs_disk_key { |
177 | __le64 objectid; | |
5f39d397 | 178 | u8 type; |
70b2befd | 179 | __le64 offset; |
e2fa7227 CM |
180 | } __attribute__ ((__packed__)); |
181 | ||
182 | struct btrfs_key { | |
eb60ceac | 183 | u64 objectid; |
5f39d397 | 184 | u8 type; |
70b2befd | 185 | u64 offset; |
eb60ceac CM |
186 | } __attribute__ ((__packed__)); |
187 | ||
0b86a832 CM |
188 | struct btrfs_mapping_tree { |
189 | struct extent_map_tree map_tree; | |
190 | }; | |
191 | ||
e17cade2 | 192 | #define BTRFS_UUID_SIZE 16 |
0b86a832 CM |
193 | struct btrfs_dev_item { |
194 | /* the internal btrfs device id */ | |
195 | __le64 devid; | |
196 | ||
197 | /* size of the device */ | |
198 | __le64 total_bytes; | |
199 | ||
200 | /* bytes used */ | |
201 | __le64 bytes_used; | |
202 | ||
203 | /* optimal io alignment for this device */ | |
204 | __le32 io_align; | |
205 | ||
206 | /* optimal io width for this device */ | |
207 | __le32 io_width; | |
208 | ||
209 | /* minimal io size for this device */ | |
210 | __le32 sector_size; | |
211 | ||
0b86a832 CM |
212 | /* type and info about this device */ |
213 | __le64 type; | |
214 | ||
2b82032c YZ |
215 | /* expected generation for this device */ |
216 | __le64 generation; | |
217 | ||
c3027eb5 CM |
218 | /* |
219 | * starting byte of this partition on the device, | |
d4a78947 | 220 | * to allow for stripe alignment in the future |
c3027eb5 CM |
221 | */ |
222 | __le64 start_offset; | |
223 | ||
e17cade2 CM |
224 | /* grouping information for allocation decisions */ |
225 | __le32 dev_group; | |
226 | ||
227 | /* seek speed 0-100 where 100 is fastest */ | |
228 | u8 seek_speed; | |
229 | ||
230 | /* bandwidth 0-100 where 100 is fastest */ | |
231 | u8 bandwidth; | |
232 | ||
0d81ba5d | 233 | /* btrfs generated uuid for this device */ |
e17cade2 | 234 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
235 | |
236 | /* uuid of FS who owns this device */ | |
237 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
238 | } __attribute__ ((__packed__)); |
239 | ||
240 | struct btrfs_stripe { | |
241 | __le64 devid; | |
242 | __le64 offset; | |
e17cade2 | 243 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
244 | } __attribute__ ((__packed__)); |
245 | ||
246 | struct btrfs_chunk { | |
e17cade2 CM |
247 | /* size of this chunk in bytes */ |
248 | __le64 length; | |
249 | ||
250 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 251 | __le64 owner; |
e17cade2 | 252 | |
0b86a832 CM |
253 | __le64 stripe_len; |
254 | __le64 type; | |
255 | ||
256 | /* optimal io alignment for this chunk */ | |
257 | __le32 io_align; | |
258 | ||
259 | /* optimal io width for this chunk */ | |
260 | __le32 io_width; | |
261 | ||
262 | /* minimal io size for this chunk */ | |
263 | __le32 sector_size; | |
264 | ||
265 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
266 | * item in the btree | |
267 | */ | |
268 | __le16 num_stripes; | |
321aecc6 CM |
269 | |
270 | /* sub stripes only matter for raid10 */ | |
271 | __le16 sub_stripes; | |
0b86a832 CM |
272 | struct btrfs_stripe stripe; |
273 | /* additional stripes go here */ | |
274 | } __attribute__ ((__packed__)); | |
275 | ||
0af3d00b JB |
276 | #define BTRFS_FREE_SPACE_EXTENT 1 |
277 | #define BTRFS_FREE_SPACE_BITMAP 2 | |
278 | ||
279 | struct btrfs_free_space_entry { | |
280 | __le64 offset; | |
281 | __le64 bytes; | |
282 | u8 type; | |
283 | } __attribute__ ((__packed__)); | |
284 | ||
285 | struct btrfs_free_space_header { | |
286 | struct btrfs_disk_key location; | |
287 | __le64 generation; | |
288 | __le64 num_entries; | |
289 | __le64 num_bitmaps; | |
290 | } __attribute__ ((__packed__)); | |
291 | ||
0b86a832 CM |
292 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
293 | { | |
294 | BUG_ON(num_stripes == 0); | |
295 | return sizeof(struct btrfs_chunk) + | |
296 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
297 | } | |
298 | ||
5f39d397 | 299 | #define BTRFS_FSID_SIZE 16 |
5d4f98a2 YZ |
300 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
301 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) | |
acce952b | 302 | |
303 | /* | |
304 | * File system states | |
305 | */ | |
306 | ||
307 | /* Errors detected */ | |
308 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) | |
309 | ||
5d4f98a2 YZ |
310 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
311 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) | |
312 | ||
313 | #define BTRFS_BACKREF_REV_MAX 256 | |
314 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
315 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
316 | BTRFS_BACKREF_REV_SHIFT) | |
317 | ||
318 | #define BTRFS_OLD_BACKREF_REV 0 | |
319 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 320 | |
fec577fb CM |
321 | /* |
322 | * every tree block (leaf or node) starts with this header. | |
323 | */ | |
bb492bb0 | 324 | struct btrfs_header { |
e17cade2 | 325 | /* these first four must match the super block */ |
f254e52c | 326 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 327 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 328 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 329 | __le64 flags; |
e17cade2 CM |
330 | |
331 | /* allowed to be different from the super from here on down */ | |
332 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 333 | __le64 generation; |
4d775673 | 334 | __le64 owner; |
5f39d397 | 335 | __le32 nritems; |
9a6f11ed | 336 | u8 level; |
eb60ceac CM |
337 | } __attribute__ ((__packed__)); |
338 | ||
5f39d397 | 339 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
340 | sizeof(struct btrfs_header)) / \ |
341 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 342 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 343 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
344 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
345 | sizeof(struct btrfs_item) - \ | |
346 | sizeof(struct btrfs_file_extent_item)) | |
f34f57a3 YZ |
347 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
348 | sizeof(struct btrfs_item) -\ | |
349 | sizeof(struct btrfs_dir_item)) | |
eb60ceac | 350 | |
0b86a832 CM |
351 | |
352 | /* | |
353 | * this is a very generous portion of the super block, giving us | |
354 | * room to translate 14 chunks with 3 stripes each. | |
355 | */ | |
356 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 357 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 358 | |
fec577fb CM |
359 | /* |
360 | * the super block basically lists the main trees of the FS | |
361 | * it currently lacks any block count etc etc | |
362 | */ | |
234b63a0 | 363 | struct btrfs_super_block { |
f254e52c | 364 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 365 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 366 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 367 | __le64 bytenr; /* this block number */ |
63b10fc4 | 368 | __le64 flags; |
e17cade2 CM |
369 | |
370 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 371 | __le64 magic; |
3768f368 CM |
372 | __le64 generation; |
373 | __le64 root; | |
0b86a832 | 374 | __le64 chunk_root; |
e02119d5 | 375 | __le64 log_root; |
c3027eb5 CM |
376 | |
377 | /* this will help find the new super based on the log root */ | |
378 | __le64 log_root_transid; | |
db94535d CM |
379 | __le64 total_bytes; |
380 | __le64 bytes_used; | |
2e635a27 | 381 | __le64 root_dir_objectid; |
8a4b83cc | 382 | __le64 num_devices; |
5f39d397 CM |
383 | __le32 sectorsize; |
384 | __le32 nodesize; | |
385 | __le32 leafsize; | |
87ee04eb | 386 | __le32 stripesize; |
0b86a832 | 387 | __le32 sys_chunk_array_size; |
84234f3a | 388 | __le64 chunk_root_generation; |
f2b636e8 JB |
389 | __le64 compat_flags; |
390 | __le64 compat_ro_flags; | |
391 | __le64 incompat_flags; | |
607d432d | 392 | __le16 csum_type; |
db94535d | 393 | u8 root_level; |
0b86a832 | 394 | u8 chunk_root_level; |
e02119d5 | 395 | u8 log_root_level; |
0d81ba5d | 396 | struct btrfs_dev_item dev_item; |
c3027eb5 | 397 | |
7ae9c09d | 398 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 399 | |
0af3d00b JB |
400 | __le64 cache_generation; |
401 | ||
c3027eb5 | 402 | /* future expansion */ |
0af3d00b | 403 | __le64 reserved[31]; |
0b86a832 | 404 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
cfaa7295 CM |
405 | } __attribute__ ((__packed__)); |
406 | ||
f2b636e8 JB |
407 | /* |
408 | * Compat flags that we support. If any incompat flags are set other than the | |
409 | * ones specified below then we will fail to mount | |
410 | */ | |
5d4f98a2 | 411 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
0af3d00b | 412 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
67377734 | 413 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
a6fa6fae | 414 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
5d4f98a2 YZ |
415 | |
416 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL | |
417 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL | |
0af3d00b JB |
418 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
419 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 420 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae LZ |
421 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
422 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO) | |
f2b636e8 | 423 | |
fec577fb | 424 | /* |
62e2749e | 425 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
426 | * the item in the leaf (relative to the start of the data area) |
427 | */ | |
0783fcfc | 428 | struct btrfs_item { |
e2fa7227 | 429 | struct btrfs_disk_key key; |
123abc88 | 430 | __le32 offset; |
5f39d397 | 431 | __le32 size; |
eb60ceac CM |
432 | } __attribute__ ((__packed__)); |
433 | ||
fec577fb CM |
434 | /* |
435 | * leaves have an item area and a data area: | |
436 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
437 | * | |
438 | * The data is separate from the items to get the keys closer together | |
439 | * during searches. | |
440 | */ | |
234b63a0 | 441 | struct btrfs_leaf { |
bb492bb0 | 442 | struct btrfs_header header; |
123abc88 | 443 | struct btrfs_item items[]; |
eb60ceac CM |
444 | } __attribute__ ((__packed__)); |
445 | ||
fec577fb CM |
446 | /* |
447 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
448 | * other blocks | |
449 | */ | |
123abc88 CM |
450 | struct btrfs_key_ptr { |
451 | struct btrfs_disk_key key; | |
452 | __le64 blockptr; | |
74493f7a | 453 | __le64 generation; |
123abc88 CM |
454 | } __attribute__ ((__packed__)); |
455 | ||
234b63a0 | 456 | struct btrfs_node { |
bb492bb0 | 457 | struct btrfs_header header; |
123abc88 | 458 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
459 | } __attribute__ ((__packed__)); |
460 | ||
fec577fb | 461 | /* |
234b63a0 CM |
462 | * btrfs_paths remember the path taken from the root down to the leaf. |
463 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
464 | * to any other levels that are present. |
465 | * | |
466 | * The slots array records the index of the item or block pointer | |
467 | * used while walking the tree. | |
468 | */ | |
234b63a0 | 469 | struct btrfs_path { |
5f39d397 | 470 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 471 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
472 | /* if there is real range locking, this locks field will change */ |
473 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 474 | int reada; |
925baedd | 475 | /* keep some upper locks as we walk down */ |
6702ed49 | 476 | int lowest_level; |
459931ec CM |
477 | |
478 | /* | |
479 | * set by btrfs_split_item, tells search_slot to keep all locks | |
480 | * and to force calls to keep space in the nodes | |
481 | */ | |
b9473439 CM |
482 | unsigned int search_for_split:1; |
483 | unsigned int keep_locks:1; | |
484 | unsigned int skip_locking:1; | |
485 | unsigned int leave_spinning:1; | |
5d4f98a2 | 486 | unsigned int search_commit_root:1; |
eb60ceac | 487 | }; |
5de08d7d | 488 | |
62e2749e CM |
489 | /* |
490 | * items in the extent btree are used to record the objectid of the | |
491 | * owner of the block and the number of references | |
492 | */ | |
5d4f98a2 | 493 | |
62e2749e | 494 | struct btrfs_extent_item { |
5d4f98a2 YZ |
495 | __le64 refs; |
496 | __le64 generation; | |
497 | __le64 flags; | |
498 | } __attribute__ ((__packed__)); | |
499 | ||
500 | struct btrfs_extent_item_v0 { | |
62e2749e | 501 | __le32 refs; |
74493f7a CM |
502 | } __attribute__ ((__packed__)); |
503 | ||
5d4f98a2 YZ |
504 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
505 | sizeof(struct btrfs_item)) | |
506 | ||
507 | #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) | |
508 | #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) | |
509 | ||
510 | /* following flags only apply to tree blocks */ | |
511 | ||
512 | /* use full backrefs for extent pointers in the block */ | |
513 | #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) | |
514 | ||
a2de733c AJ |
515 | /* |
516 | * this flag is only used internally by scrub and may be changed at any time | |
517 | * it is only declared here to avoid collisions | |
518 | */ | |
519 | #define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) | |
520 | ||
5d4f98a2 YZ |
521 | struct btrfs_tree_block_info { |
522 | struct btrfs_disk_key key; | |
523 | u8 level; | |
524 | } __attribute__ ((__packed__)); | |
525 | ||
526 | struct btrfs_extent_data_ref { | |
527 | __le64 root; | |
528 | __le64 objectid; | |
529 | __le64 offset; | |
530 | __le32 count; | |
531 | } __attribute__ ((__packed__)); | |
532 | ||
533 | struct btrfs_shared_data_ref { | |
534 | __le32 count; | |
535 | } __attribute__ ((__packed__)); | |
536 | ||
537 | struct btrfs_extent_inline_ref { | |
538 | u8 type; | |
1bec1aed | 539 | __le64 offset; |
5d4f98a2 YZ |
540 | } __attribute__ ((__packed__)); |
541 | ||
542 | /* old style backrefs item */ | |
543 | struct btrfs_extent_ref_v0 { | |
74493f7a CM |
544 | __le64 root; |
545 | __le64 generation; | |
546 | __le64 objectid; | |
5d4f98a2 | 547 | __le32 count; |
62e2749e CM |
548 | } __attribute__ ((__packed__)); |
549 | ||
5d4f98a2 | 550 | |
0b86a832 CM |
551 | /* dev extents record free space on individual devices. The owner |
552 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 553 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
554 | */ |
555 | struct btrfs_dev_extent { | |
e17cade2 CM |
556 | __le64 chunk_tree; |
557 | __le64 chunk_objectid; | |
558 | __le64 chunk_offset; | |
0b86a832 | 559 | __le64 length; |
e17cade2 | 560 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
561 | } __attribute__ ((__packed__)); |
562 | ||
3954401f | 563 | struct btrfs_inode_ref { |
aec7477b | 564 | __le64 index; |
3954401f CM |
565 | __le16 name_len; |
566 | /* name goes here */ | |
567 | } __attribute__ ((__packed__)); | |
568 | ||
0b86a832 | 569 | struct btrfs_timespec { |
f254e52c | 570 | __le64 sec; |
1e1d2701 CM |
571 | __le32 nsec; |
572 | } __attribute__ ((__packed__)); | |
573 | ||
95029d7d | 574 | enum btrfs_compression_type { |
261507a0 LZ |
575 | BTRFS_COMPRESS_NONE = 0, |
576 | BTRFS_COMPRESS_ZLIB = 1, | |
a6fa6fae LZ |
577 | BTRFS_COMPRESS_LZO = 2, |
578 | BTRFS_COMPRESS_TYPES = 2, | |
579 | BTRFS_COMPRESS_LAST = 3, | |
95029d7d | 580 | }; |
c8b97818 | 581 | |
1e1d2701 | 582 | struct btrfs_inode_item { |
e02119d5 | 583 | /* nfs style generation number */ |
1e1d2701 | 584 | __le64 generation; |
e02119d5 CM |
585 | /* transid that last touched this inode */ |
586 | __le64 transid; | |
1e1d2701 | 587 | __le64 size; |
a76a3cd4 | 588 | __le64 nbytes; |
31f3c99b | 589 | __le64 block_group; |
1e1d2701 CM |
590 | __le32 nlink; |
591 | __le32 uid; | |
592 | __le32 gid; | |
593 | __le32 mode; | |
0b86a832 | 594 | __le64 rdev; |
f2b636e8 | 595 | __le64 flags; |
c8b97818 | 596 | |
c3027eb5 CM |
597 | /* modification sequence number for NFS */ |
598 | __le64 sequence; | |
599 | ||
600 | /* | |
601 | * a little future expansion, for more than this we can | |
602 | * just grow the inode item and version it | |
603 | */ | |
604 | __le64 reserved[4]; | |
0b86a832 CM |
605 | struct btrfs_timespec atime; |
606 | struct btrfs_timespec ctime; | |
607 | struct btrfs_timespec mtime; | |
608 | struct btrfs_timespec otime; | |
1e1d2701 CM |
609 | } __attribute__ ((__packed__)); |
610 | ||
e02119d5 CM |
611 | struct btrfs_dir_log_item { |
612 | __le64 end; | |
613 | } __attribute__ ((__packed__)); | |
614 | ||
62e2749e | 615 | struct btrfs_dir_item { |
d6e4a428 | 616 | struct btrfs_disk_key location; |
e02119d5 | 617 | __le64 transid; |
5103e947 | 618 | __le16 data_len; |
a8a2ee0c | 619 | __le16 name_len; |
62e2749e CM |
620 | u8 type; |
621 | } __attribute__ ((__packed__)); | |
622 | ||
b83cc969 LZ |
623 | #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) |
624 | ||
62e2749e | 625 | struct btrfs_root_item { |
d6e4a428 | 626 | struct btrfs_inode_item inode; |
84234f3a | 627 | __le64 generation; |
d6e4a428 | 628 | __le64 root_dirid; |
db94535d CM |
629 | __le64 bytenr; |
630 | __le64 byte_limit; | |
631 | __le64 bytes_used; | |
80ff3856 | 632 | __le64 last_snapshot; |
f2b636e8 | 633 | __le64 flags; |
62e2749e | 634 | __le32 refs; |
5eda7b5e CM |
635 | struct btrfs_disk_key drop_progress; |
636 | u8 drop_level; | |
db94535d | 637 | u8 level; |
9f5fae2f | 638 | } __attribute__ ((__packed__)); |
62e2749e | 639 | |
0660b5af CM |
640 | /* |
641 | * this is used for both forward and backward root refs | |
642 | */ | |
643 | struct btrfs_root_ref { | |
644 | __le64 dirid; | |
645 | __le64 sequence; | |
646 | __le16 name_len; | |
647 | } __attribute__ ((__packed__)); | |
648 | ||
d899e052 YZ |
649 | #define BTRFS_FILE_EXTENT_INLINE 0 |
650 | #define BTRFS_FILE_EXTENT_REG 1 | |
651 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 652 | |
9f5fae2f | 653 | struct btrfs_file_extent_item { |
c8b97818 CM |
654 | /* |
655 | * transaction id that created this extent | |
656 | */ | |
71951f35 | 657 | __le64 generation; |
c8b97818 CM |
658 | /* |
659 | * max number of bytes to hold this extent in ram | |
660 | * when we split a compressed extent we can't know how big | |
661 | * each of the resulting pieces will be. So, this is | |
662 | * an upper limit on the size of the extent in ram instead of | |
663 | * an exact limit. | |
664 | */ | |
665 | __le64 ram_bytes; | |
666 | ||
667 | /* | |
668 | * 32 bits for the various ways we might encode the data, | |
669 | * including compression and encryption. If any of these | |
670 | * are set to something a given disk format doesn't understand | |
671 | * it is treated like an incompat flag for reading and writing, | |
672 | * but not for stat. | |
673 | */ | |
674 | u8 compression; | |
675 | u8 encryption; | |
676 | __le16 other_encoding; /* spare for later use */ | |
677 | ||
678 | /* are we inline data or a real extent? */ | |
236454df | 679 | u8 type; |
c8b97818 | 680 | |
9f5fae2f CM |
681 | /* |
682 | * disk space consumed by the extent, checksum blocks are included | |
683 | * in these numbers | |
684 | */ | |
db94535d CM |
685 | __le64 disk_bytenr; |
686 | __le64 disk_num_bytes; | |
9f5fae2f | 687 | /* |
dee26a9f | 688 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
689 | * this extent record is for. This allows a file extent to point |
690 | * into the middle of an existing extent on disk, sharing it | |
691 | * between two snapshots (useful if some bytes in the middle of the | |
692 | * extent have changed | |
693 | */ | |
694 | __le64 offset; | |
695 | /* | |
c8b97818 CM |
696 | * the logical number of file blocks (no csums included). This |
697 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 698 | */ |
db94535d | 699 | __le64 num_bytes; |
c8b97818 | 700 | |
9f5fae2f CM |
701 | } __attribute__ ((__packed__)); |
702 | ||
f254e52c | 703 | struct btrfs_csum_item { |
509659cd | 704 | u8 csum; |
f254e52c CM |
705 | } __attribute__ ((__packed__)); |
706 | ||
0b86a832 CM |
707 | /* different types of block groups (and chunks) */ |
708 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
709 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
710 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 711 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 712 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 713 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 714 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
b742bb82 | 715 | #define BTRFS_NR_RAID_TYPES 5 |
1e2677e0 | 716 | |
9078a3e1 CM |
717 | struct btrfs_block_group_item { |
718 | __le64 used; | |
0b86a832 CM |
719 | __le64 chunk_objectid; |
720 | __le64 flags; | |
9078a3e1 CM |
721 | } __attribute__ ((__packed__)); |
722 | ||
6324fbf3 CM |
723 | struct btrfs_space_info { |
724 | u64 flags; | |
6a63209f | 725 | |
89a55897 JB |
726 | u64 total_bytes; /* total bytes in the space, |
727 | this doesn't take mirrors into account */ | |
b742bb82 YZ |
728 | u64 bytes_used; /* total bytes used, |
729 | this does't take mirrors into account */ | |
6a63209f JB |
730 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
731 | transaction finishes */ | |
732 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
733 | current allocations */ | |
734 | u64 bytes_readonly; /* total bytes that are read only */ | |
8929ecfa | 735 | |
6a63209f | 736 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 737 | delalloc/allocations */ |
b742bb82 | 738 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
739 | u64 disk_total; /* total bytes on disk, takes mirrors into |
740 | account */ | |
6a63209f | 741 | |
36e39c40 CM |
742 | /* |
743 | * we bump reservation progress every time we decrement | |
744 | * bytes_reserved. This way people waiting for reservations | |
745 | * know something good has happened and they can check | |
746 | * for progress. The number here isn't to be trusted, it | |
747 | * just shows reclaim activity | |
748 | */ | |
749 | unsigned long reservation_progress; | |
750 | ||
6d74119f | 751 | int full:1; /* indicates that we cannot allocate any more |
6a63209f | 752 | chunks for this space */ |
6d74119f JB |
753 | int chunk_alloc:1; /* set if we are allocating a chunk */ |
754 | ||
6a63209f JB |
755 | int force_alloc; /* set if we need to force a chunk alloc for |
756 | this space */ | |
757 | ||
6324fbf3 | 758 | struct list_head list; |
0f9dd46c JB |
759 | |
760 | /* for block groups in our same type */ | |
b742bb82 | 761 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
0f9dd46c | 762 | spinlock_t lock; |
80eb234a | 763 | struct rw_semaphore groups_sem; |
817d52f8 | 764 | atomic_t caching_threads; |
0f9dd46c JB |
765 | }; |
766 | ||
f0486c68 YZ |
767 | struct btrfs_block_rsv { |
768 | u64 size; | |
769 | u64 reserved; | |
770 | u64 freed[2]; | |
771 | struct btrfs_space_info *space_info; | |
772 | struct list_head list; | |
773 | spinlock_t lock; | |
774 | atomic_t usage; | |
775 | unsigned int priority:8; | |
776 | unsigned int durable:1; | |
777 | unsigned int refill_used:1; | |
778 | unsigned int full:1; | |
779 | }; | |
780 | ||
fa9c0d79 CM |
781 | /* |
782 | * free clusters are used to claim free space in relatively large chunks, | |
783 | * allowing us to do less seeky writes. They are used for all metadata | |
784 | * allocations and data allocations in ssd mode. | |
785 | */ | |
786 | struct btrfs_free_cluster { | |
787 | spinlock_t lock; | |
788 | spinlock_t refill_lock; | |
789 | struct rb_root root; | |
790 | ||
791 | /* largest extent in this cluster */ | |
792 | u64 max_size; | |
793 | ||
794 | /* first extent starting offset */ | |
795 | u64 window_start; | |
796 | ||
797 | struct btrfs_block_group_cache *block_group; | |
798 | /* | |
799 | * when a cluster is allocated from a block group, we put the | |
800 | * cluster onto a list in the block group so that it can | |
801 | * be freed before the block group is freed. | |
802 | */ | |
803 | struct list_head block_group_list; | |
6324fbf3 CM |
804 | }; |
805 | ||
817d52f8 JB |
806 | enum btrfs_caching_type { |
807 | BTRFS_CACHE_NO = 0, | |
808 | BTRFS_CACHE_STARTED = 1, | |
809 | BTRFS_CACHE_FINISHED = 2, | |
810 | }; | |
811 | ||
0af3d00b JB |
812 | enum btrfs_disk_cache_state { |
813 | BTRFS_DC_WRITTEN = 0, | |
814 | BTRFS_DC_ERROR = 1, | |
815 | BTRFS_DC_CLEAR = 2, | |
816 | BTRFS_DC_SETUP = 3, | |
817 | BTRFS_DC_NEED_WRITE = 4, | |
818 | }; | |
819 | ||
11833d66 YZ |
820 | struct btrfs_caching_control { |
821 | struct list_head list; | |
822 | struct mutex mutex; | |
823 | wait_queue_head_t wait; | |
824 | struct btrfs_block_group_cache *block_group; | |
825 | u64 progress; | |
826 | atomic_t count; | |
827 | }; | |
828 | ||
9078a3e1 CM |
829 | struct btrfs_block_group_cache { |
830 | struct btrfs_key key; | |
831 | struct btrfs_block_group_item item; | |
817d52f8 | 832 | struct btrfs_fs_info *fs_info; |
0af3d00b | 833 | struct inode *inode; |
c286ac48 | 834 | spinlock_t lock; |
324ae4df | 835 | u64 pinned; |
e8569813 | 836 | u64 reserved; |
f0486c68 | 837 | u64 reserved_pinned; |
1b2da372 | 838 | u64 bytes_super; |
0b86a832 | 839 | u64 flags; |
96303081 JB |
840 | u64 sectorsize; |
841 | int extents_thresh; | |
842 | int free_extents; | |
843 | int total_bitmaps; | |
0410c94a MK |
844 | unsigned int ro:1; |
845 | unsigned int dirty:1; | |
846 | unsigned int iref:1; | |
0af3d00b JB |
847 | |
848 | int disk_cache_state; | |
0f9dd46c | 849 | |
817d52f8 | 850 | /* cache tracking stuff */ |
817d52f8 | 851 | int cached; |
11833d66 YZ |
852 | struct btrfs_caching_control *caching_ctl; |
853 | u64 last_byte_to_unpin; | |
817d52f8 | 854 | |
0f9dd46c JB |
855 | struct btrfs_space_info *space_info; |
856 | ||
857 | /* free space cache stuff */ | |
6226cb0a | 858 | spinlock_t tree_lock; |
0f9dd46c | 859 | struct rb_root free_space_offset; |
817d52f8 | 860 | u64 free_space; |
0f9dd46c JB |
861 | |
862 | /* block group cache stuff */ | |
863 | struct rb_node cache_node; | |
864 | ||
865 | /* for block groups in the same raid type */ | |
866 | struct list_head list; | |
d2fb3437 YZ |
867 | |
868 | /* usage count */ | |
869 | atomic_t count; | |
fa9c0d79 CM |
870 | |
871 | /* List of struct btrfs_free_clusters for this block group. | |
872 | * Today it will only have one thing on it, but that may change | |
873 | */ | |
874 | struct list_head cluster_list; | |
9078a3e1 | 875 | }; |
0b86a832 | 876 | |
5d4f98a2 | 877 | struct reloc_control; |
0b86a832 | 878 | struct btrfs_device; |
8a4b83cc | 879 | struct btrfs_fs_devices; |
9f5fae2f | 880 | struct btrfs_fs_info { |
5f39d397 | 881 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 882 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
883 | struct btrfs_root *extent_root; |
884 | struct btrfs_root *tree_root; | |
0b86a832 CM |
885 | struct btrfs_root *chunk_root; |
886 | struct btrfs_root *dev_root; | |
3de4586c | 887 | struct btrfs_root *fs_root; |
d20f7043 | 888 | struct btrfs_root *csum_root; |
e02119d5 CM |
889 | |
890 | /* the log root tree is a directory of all the other log roots */ | |
891 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
892 | |
893 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 894 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 895 | |
0f9dd46c JB |
896 | /* block group cache stuff */ |
897 | spinlock_t block_group_cache_lock; | |
898 | struct rb_root block_group_cache_tree; | |
899 | ||
11833d66 YZ |
900 | struct extent_io_tree freed_extents[2]; |
901 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 902 | |
0b86a832 CM |
903 | /* logical->physical extent mapping */ |
904 | struct btrfs_mapping_tree mapping_tree; | |
905 | ||
f0486c68 YZ |
906 | /* block reservation for extent, checksum and root tree */ |
907 | struct btrfs_block_rsv global_block_rsv; | |
908 | /* block reservation for delay allocation */ | |
909 | struct btrfs_block_rsv delalloc_block_rsv; | |
910 | /* block reservation for metadata operations */ | |
911 | struct btrfs_block_rsv trans_block_rsv; | |
912 | /* block reservation for chunk tree */ | |
913 | struct btrfs_block_rsv chunk_block_rsv; | |
914 | ||
915 | struct btrfs_block_rsv empty_block_rsv; | |
916 | ||
917 | /* list of block reservations that cross multiple transactions */ | |
918 | struct list_head durable_block_rsv_list; | |
919 | ||
920 | struct mutex durable_block_rsv_mutex; | |
921 | ||
293ffd5f | 922 | u64 generation; |
15ee9bc7 | 923 | u64 last_trans_committed; |
12fcfd22 CM |
924 | |
925 | /* | |
926 | * this is updated to the current trans every time a full commit | |
927 | * is required instead of the faster short fsync log commits | |
928 | */ | |
929 | u64 last_trans_log_full_commit; | |
9ca9ee09 | 930 | u64 open_ioctl_trans; |
261507a0 LZ |
931 | unsigned long mount_opt:20; |
932 | unsigned long compress_type:4; | |
6f568d35 | 933 | u64 max_inline; |
8f662a76 | 934 | u64 alloc_start; |
79154b1b | 935 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 936 | wait_queue_head_t transaction_throttle; |
f9295749 | 937 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 938 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 939 | wait_queue_head_t async_submit_wait; |
e02119d5 | 940 | |
4b52dff6 | 941 | struct btrfs_super_block super_copy; |
a061fc8d | 942 | struct btrfs_super_block super_for_commit; |
0b86a832 | 943 | struct block_device *__bdev; |
e20d96d6 | 944 | struct super_block *sb; |
d98237b3 | 945 | struct inode *btree_inode; |
04160088 | 946 | struct backing_dev_info bdi; |
79154b1b | 947 | struct mutex trans_mutex; |
e02119d5 | 948 | struct mutex tree_log_mutex; |
a74a4b97 CM |
949 | struct mutex transaction_kthread_mutex; |
950 | struct mutex cleaner_mutex; | |
925baedd | 951 | struct mutex chunk_mutex; |
7d9eb12c | 952 | struct mutex volume_mutex; |
5a3f23d5 CM |
953 | /* |
954 | * this protects the ordered operations list only while we are | |
955 | * processing all of the entries on it. This way we make | |
956 | * sure the commit code doesn't find the list temporarily empty | |
957 | * because another function happens to be doing non-waiting preflush | |
958 | * before jumping into the main commit. | |
959 | */ | |
960 | struct mutex ordered_operations_mutex; | |
11833d66 | 961 | struct rw_semaphore extent_commit_sem; |
5a3f23d5 | 962 | |
c71bf099 | 963 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 964 | |
c71bf099 | 965 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
966 | struct srcu_struct subvol_srcu; |
967 | ||
8fd17795 | 968 | struct list_head trans_list; |
19c00ddc | 969 | struct list_head hashers; |
facda1e7 | 970 | struct list_head dead_roots; |
11833d66 | 971 | struct list_head caching_block_groups; |
e02119d5 | 972 | |
24bbcf04 YZ |
973 | spinlock_t delayed_iput_lock; |
974 | struct list_head delayed_iputs; | |
975 | ||
cb03c743 | 976 | atomic_t nr_async_submits; |
8c8bee1d | 977 | atomic_t async_submit_draining; |
0986fe9e | 978 | atomic_t nr_async_bios; |
771ed689 | 979 | atomic_t async_delalloc_pages; |
ce9adaa5 | 980 | |
3eaa2885 CM |
981 | /* |
982 | * this is used by the balancing code to wait for all the pending | |
983 | * ordered extents | |
984 | */ | |
985 | spinlock_t ordered_extent_lock; | |
5a3f23d5 CM |
986 | |
987 | /* | |
988 | * all of the data=ordered extents pending writeback | |
989 | * these can span multiple transactions and basically include | |
990 | * every dirty data page that isn't from nodatacow | |
991 | */ | |
3eaa2885 | 992 | struct list_head ordered_extents; |
5a3f23d5 CM |
993 | |
994 | /* | |
995 | * all of the inodes that have delalloc bytes. It is possible for | |
996 | * this list to be empty even when there is still dirty data=ordered | |
997 | * extents waiting to finish IO. | |
998 | */ | |
ea8c2819 | 999 | struct list_head delalloc_inodes; |
3eaa2885 | 1000 | |
5a3f23d5 CM |
1001 | /* |
1002 | * special rename and truncate targets that must be on disk before | |
1003 | * we're allowed to commit. This is basically the ext3 style | |
1004 | * data=ordered list. | |
1005 | */ | |
1006 | struct list_head ordered_operations; | |
1007 | ||
8b712842 CM |
1008 | /* |
1009 | * there is a pool of worker threads for checksumming during writes | |
1010 | * and a pool for checksumming after reads. This is because readers | |
1011 | * can run with FS locks held, and the writers may be waiting for | |
1012 | * those locks. We don't want ordering in the pending list to cause | |
1013 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
1014 | * |
1015 | * A third pool does submit_bio to avoid deadlocking with the other | |
1016 | * two | |
8b712842 | 1017 | */ |
61d92c32 | 1018 | struct btrfs_workers generic_worker; |
8b712842 | 1019 | struct btrfs_workers workers; |
771ed689 | 1020 | struct btrfs_workers delalloc_workers; |
8b712842 | 1021 | struct btrfs_workers endio_workers; |
d20f7043 | 1022 | struct btrfs_workers endio_meta_workers; |
cad321ad | 1023 | struct btrfs_workers endio_meta_write_workers; |
e6dcd2dc | 1024 | struct btrfs_workers endio_write_workers; |
0cb59c99 | 1025 | struct btrfs_workers endio_freespace_worker; |
1cc127b5 | 1026 | struct btrfs_workers submit_workers; |
247e743c CM |
1027 | /* |
1028 | * fixup workers take dirty pages that didn't properly go through | |
1029 | * the cow mechanism and make them safe to write. It happens | |
1030 | * for the sys_munmap function call path | |
1031 | */ | |
1032 | struct btrfs_workers fixup_workers; | |
a74a4b97 CM |
1033 | struct task_struct *transaction_kthread; |
1034 | struct task_struct *cleaner_kthread; | |
4543df7e | 1035 | int thread_pool_size; |
8b712842 | 1036 | |
58176a96 JB |
1037 | struct kobject super_kobj; |
1038 | struct completion kobj_unregister; | |
e66f709b | 1039 | int do_barriers; |
facda1e7 | 1040 | int closing; |
e02119d5 | 1041 | int log_root_recovering; |
a22285a6 | 1042 | int enospc_unlink; |
9f5fae2f | 1043 | |
324ae4df | 1044 | u64 total_pinned; |
b9473439 CM |
1045 | |
1046 | /* protected by the delalloc lock, used to keep from writing | |
1047 | * metadata until there is a nice batch | |
1048 | */ | |
1049 | u64 dirty_metadata_bytes; | |
0b86a832 CM |
1050 | struct list_head dirty_cowonly_roots; |
1051 | ||
8a4b83cc | 1052 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
1053 | |
1054 | /* | |
1055 | * the space_info list is almost entirely read only. It only changes | |
1056 | * when we add a new raid type to the FS, and that happens | |
1057 | * very rarely. RCU is used to protect it. | |
1058 | */ | |
6324fbf3 | 1059 | struct list_head space_info; |
4184ea7f | 1060 | |
5d4f98a2 YZ |
1061 | struct reloc_control *reloc_ctl; |
1062 | ||
1832a6d5 | 1063 | spinlock_t delalloc_lock; |
cee36a03 | 1064 | spinlock_t new_trans_lock; |
1832a6d5 | 1065 | u64 delalloc_bytes; |
fa9c0d79 CM |
1066 | |
1067 | /* data_alloc_cluster is only used in ssd mode */ | |
1068 | struct btrfs_free_cluster data_alloc_cluster; | |
1069 | ||
1070 | /* all metadata allocations go through this cluster */ | |
1071 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 1072 | |
31153d81 YZ |
1073 | spinlock_t ref_cache_lock; |
1074 | u64 total_ref_cache_size; | |
31153d81 | 1075 | |
d18a2c44 CM |
1076 | u64 avail_data_alloc_bits; |
1077 | u64 avail_metadata_alloc_bits; | |
1078 | u64 avail_system_alloc_bits; | |
1079 | u64 data_alloc_profile; | |
1080 | u64 metadata_alloc_profile; | |
1081 | u64 system_alloc_profile; | |
788f20eb | 1082 | |
97e728d4 JB |
1083 | unsigned data_chunk_allocations; |
1084 | unsigned metadata_ratio; | |
1085 | ||
788f20eb | 1086 | void *bdev_holder; |
acce952b | 1087 | |
a2de733c AJ |
1088 | /* private scrub information */ |
1089 | struct mutex scrub_lock; | |
1090 | atomic_t scrubs_running; | |
1091 | atomic_t scrub_pause_req; | |
1092 | atomic_t scrubs_paused; | |
1093 | atomic_t scrub_cancel_req; | |
1094 | wait_queue_head_t scrub_pause_wait; | |
1095 | struct rw_semaphore scrub_super_lock; | |
1096 | int scrub_workers_refcnt; | |
1097 | struct btrfs_workers scrub_workers; | |
1098 | ||
acce952b | 1099 | /* filesystem state */ |
1100 | u64 fs_state; | |
324ae4df | 1101 | }; |
0b86a832 | 1102 | |
9f5fae2f CM |
1103 | /* |
1104 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1105 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1106 | */ |
1107 | struct btrfs_root { | |
5f39d397 | 1108 | struct extent_buffer *node; |
925baedd CM |
1109 | |
1110 | /* the node lock is held while changing the node pointer */ | |
1111 | spinlock_t node_lock; | |
1112 | ||
5f39d397 | 1113 | struct extent_buffer *commit_root; |
e02119d5 | 1114 | struct btrfs_root *log_root; |
1a40e23b | 1115 | struct btrfs_root *reloc_root; |
31153d81 | 1116 | |
62e2749e CM |
1117 | struct btrfs_root_item root_item; |
1118 | struct btrfs_key root_key; | |
9f5fae2f | 1119 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1120 | struct extent_io_tree dirty_log_pages; |
1121 | ||
58176a96 JB |
1122 | struct kobject root_kobj; |
1123 | struct completion kobj_unregister; | |
a2135011 | 1124 | struct mutex objectid_mutex; |
7237f183 | 1125 | |
f0486c68 YZ |
1126 | spinlock_t accounting_lock; |
1127 | struct btrfs_block_rsv *block_rsv; | |
1128 | ||
e02119d5 | 1129 | struct mutex log_mutex; |
7237f183 YZ |
1130 | wait_queue_head_t log_writer_wait; |
1131 | wait_queue_head_t log_commit_wait[2]; | |
1132 | atomic_t log_writers; | |
1133 | atomic_t log_commit[2]; | |
1134 | unsigned long log_transid; | |
257c62e1 | 1135 | unsigned long last_log_commit; |
7237f183 | 1136 | unsigned long log_batch; |
ff782e0a JB |
1137 | pid_t log_start_pid; |
1138 | bool log_multiple_pids; | |
ea8c2819 | 1139 | |
0f7d52f4 CM |
1140 | u64 objectid; |
1141 | u64 last_trans; | |
5f39d397 CM |
1142 | |
1143 | /* data allocations are done in sectorsize units */ | |
1144 | u32 sectorsize; | |
1145 | ||
1146 | /* node allocations are done in nodesize units */ | |
1147 | u32 nodesize; | |
1148 | ||
1149 | /* leaf allocations are done in leafsize units */ | |
1150 | u32 leafsize; | |
1151 | ||
87ee04eb CM |
1152 | u32 stripesize; |
1153 | ||
9f5fae2f | 1154 | u32 type; |
13a8a7c8 YZ |
1155 | |
1156 | u64 highest_objectid; | |
9f3a7427 | 1157 | int ref_cows; |
0b86a832 | 1158 | int track_dirty; |
4df27c4d YZ |
1159 | int in_radix; |
1160 | ||
3f157a2f | 1161 | u64 defrag_trans_start; |
6702ed49 | 1162 | struct btrfs_key defrag_progress; |
0ef3e66b | 1163 | struct btrfs_key defrag_max; |
6702ed49 | 1164 | int defrag_running; |
58176a96 | 1165 | char *name; |
4313b399 | 1166 | int in_sysfs; |
0b86a832 CM |
1167 | |
1168 | /* the dirty list is only used by non-reference counted roots */ | |
1169 | struct list_head dirty_list; | |
7b128766 | 1170 | |
5d4f98a2 YZ |
1171 | struct list_head root_list; |
1172 | ||
d68fc57b | 1173 | spinlock_t orphan_lock; |
7b128766 | 1174 | struct list_head orphan_list; |
d68fc57b YZ |
1175 | struct btrfs_block_rsv *orphan_block_rsv; |
1176 | int orphan_item_inserted; | |
1177 | int orphan_cleanup_state; | |
3394e160 | 1178 | |
5d4f98a2 YZ |
1179 | spinlock_t inode_lock; |
1180 | /* red-black tree that keeps track of in-memory inodes */ | |
1181 | struct rb_root inode_tree; | |
1182 | ||
3394e160 CM |
1183 | /* |
1184 | * right now this just gets used so that a root has its own devid | |
1185 | * for stat. It may be used for more later | |
1186 | */ | |
1187 | struct super_block anon_super; | |
62e2749e CM |
1188 | }; |
1189 | ||
1e1d2701 CM |
1190 | /* |
1191 | * inode items have the data typically returned from stat and store other | |
1192 | * info about object characteristics. There is one for every file and dir in | |
1193 | * the FS | |
1194 | */ | |
9078a3e1 | 1195 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af CM |
1196 | #define BTRFS_INODE_REF_KEY 12 |
1197 | #define BTRFS_XATTR_ITEM_KEY 24 | |
1198 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 1199 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
1200 | |
1201 | /* | |
1202 | * dir items are the name -> inode pointers in a directory. There is one | |
1203 | * for every name in a directory. | |
1204 | */ | |
0660b5af CM |
1205 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
1206 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
1207 | #define BTRFS_DIR_ITEM_KEY 84 | |
1208 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 1209 | /* |
9078a3e1 | 1210 | * extent data is for file data |
1e1d2701 | 1211 | */ |
0660b5af | 1212 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 1213 | |
f254e52c | 1214 | /* |
d20f7043 CM |
1215 | * extent csums are stored in a separate tree and hold csums for |
1216 | * an entire extent on disk. | |
f254e52c | 1217 | */ |
d20f7043 | 1218 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 1219 | |
1e1d2701 | 1220 | /* |
d4a78947 | 1221 | * root items point to tree roots. They are typically in the root |
1e1d2701 CM |
1222 | * tree used by the super block to find all the other trees |
1223 | */ | |
0660b5af CM |
1224 | #define BTRFS_ROOT_ITEM_KEY 132 |
1225 | ||
1226 | /* | |
1227 | * root backrefs tie subvols and snapshots to the directory entries that | |
1228 | * reference them | |
1229 | */ | |
1230 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
1231 | ||
1232 | /* | |
1233 | * root refs make a fast index for listing all of the snapshots and | |
1234 | * subvolumes referenced by a given root. They point directly to the | |
1235 | * directory item in the root that references the subvol | |
1236 | */ | |
1237 | #define BTRFS_ROOT_REF_KEY 156 | |
1238 | ||
1e1d2701 CM |
1239 | /* |
1240 | * extent items are in the extent map tree. These record which blocks | |
1241 | * are used, and how many references there are to each block | |
1242 | */ | |
0660b5af | 1243 | #define BTRFS_EXTENT_ITEM_KEY 168 |
5d4f98a2 YZ |
1244 | |
1245 | #define BTRFS_TREE_BLOCK_REF_KEY 176 | |
1246 | ||
1247 | #define BTRFS_EXTENT_DATA_REF_KEY 178 | |
1248 | ||
1249 | #define BTRFS_EXTENT_REF_V0_KEY 180 | |
1250 | ||
1251 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 | |
1252 | ||
1253 | #define BTRFS_SHARED_DATA_REF_KEY 184 | |
9078a3e1 CM |
1254 | |
1255 | /* | |
1256 | * block groups give us hints into the extent allocation trees. Which | |
1257 | * blocks are free etc etc | |
1258 | */ | |
0660b5af | 1259 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 1260 | |
0660b5af CM |
1261 | #define BTRFS_DEV_EXTENT_KEY 204 |
1262 | #define BTRFS_DEV_ITEM_KEY 216 | |
1263 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 1264 | |
1e1d2701 CM |
1265 | /* |
1266 | * string items are for debugging. They just store a short string of | |
1267 | * data in the FS | |
1268 | */ | |
9078a3e1 CM |
1269 | #define BTRFS_STRING_ITEM_KEY 253 |
1270 | ||
21ad10cf CM |
1271 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1272 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1273 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1274 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1275 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1276 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1277 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1278 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1279 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1280 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1281 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1282 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1283 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1284 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1285 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1286 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
b6cda9bc CM |
1287 | |
1288 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
1289 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
1290 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
1291 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
1292 | /* |
1293 | * Inode flags | |
1294 | */ | |
fdebe2bd Y |
1295 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1296 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1297 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1298 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1299 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1300 | #define BTRFS_INODE_SYNC (1 << 5) |
1301 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1302 | #define BTRFS_INODE_APPEND (1 << 7) | |
1303 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1304 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1305 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1306 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1307 | |
08fe4db1 LZ |
1308 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1309 | ||
5f39d397 CM |
1310 | /* some macros to generate set/get funcs for the struct fields. This |
1311 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
1312 | * one for u8: | |
1313 | */ | |
1314 | #define le8_to_cpu(v) (v) | |
1315 | #define cpu_to_le8(v) (v) | |
1316 | #define __le8 u8 | |
1317 | ||
1318 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
1319 | read_extent_buffer(eb, (char *)(result), \ | |
1320 | ((unsigned long)(ptr)) + \ | |
1321 | offsetof(type, member), \ | |
1322 | sizeof(((type *)0)->member))) | |
1323 | ||
1324 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1325 | write_extent_buffer(eb, (char *)(result), \ | |
1326 | ((unsigned long)(ptr)) + \ | |
1327 | offsetof(type, member), \ | |
1328 | sizeof(((type *)0)->member))) | |
1329 | ||
0f82731f | 1330 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 1331 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
1332 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
1333 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
1334 | #endif | |
5f39d397 CM |
1335 | |
1336 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1337 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1338 | { \ | |
df68b8a7 DM |
1339 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1340 | u##bits res = le##bits##_to_cpu(p->member); \ | |
1341 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 1342 | return res; \ |
5f39d397 CM |
1343 | } \ |
1344 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1345 | u##bits val) \ | |
1346 | { \ | |
df68b8a7 DM |
1347 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1348 | p->member = cpu_to_le##bits(val); \ | |
1349 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 1350 | } |
9078a3e1 | 1351 | |
5f39d397 CM |
1352 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1353 | static inline u##bits btrfs_##name(type *s) \ | |
1354 | { \ | |
1355 | return le##bits##_to_cpu(s->member); \ | |
1356 | } \ | |
1357 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1358 | { \ | |
1359 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1360 | } |
1361 | ||
0b86a832 CM |
1362 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1363 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1364 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1365 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1366 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1367 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1368 | start_offset, 64); | |
0b86a832 CM |
1369 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1370 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1371 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1372 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1373 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1374 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1375 | |
8a4b83cc CM |
1376 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1377 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1378 | total_bytes, 64); | |
1379 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1380 | bytes_used, 64); | |
1381 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1382 | io_align, 32); | |
1383 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1384 | io_width, 32); | |
1385 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1386 | sector_size, 32); | |
1387 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1388 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1389 | dev_group, 32); | |
1390 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1391 | seek_speed, 8); | |
1392 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1393 | bandwidth, 8); | |
2b82032c YZ |
1394 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1395 | generation, 64); | |
8a4b83cc | 1396 | |
0b86a832 CM |
1397 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
1398 | { | |
1399 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
1400 | } | |
1401 | ||
2b82032c YZ |
1402 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
1403 | { | |
1404 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
1405 | } | |
1406 | ||
e17cade2 | 1407 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1408 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1409 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1410 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1411 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1412 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1413 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1414 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1415 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1416 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1417 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1418 | ||
e17cade2 CM |
1419 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1420 | { | |
1421 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1422 | } | |
1423 | ||
1424 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1425 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1426 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1427 | stripe_len, 64); | |
1428 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1429 | io_align, 32); | |
1430 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1431 | io_width, 32); | |
1432 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1433 | sector_size, 32); | |
1434 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1435 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1436 | num_stripes, 16); | |
321aecc6 CM |
1437 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1438 | sub_stripes, 16); | |
0b86a832 CM |
1439 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1440 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1441 | ||
1442 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1443 | int nr) | |
1444 | { | |
1445 | unsigned long offset = (unsigned long)c; | |
1446 | offset += offsetof(struct btrfs_chunk, stripe); | |
1447 | offset += nr * sizeof(struct btrfs_stripe); | |
1448 | return (struct btrfs_stripe *)offset; | |
1449 | } | |
1450 | ||
a443755f CM |
1451 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1452 | { | |
1453 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1454 | } | |
1455 | ||
0b86a832 CM |
1456 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1457 | struct btrfs_chunk *c, int nr) | |
1458 | { | |
1459 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1460 | } | |
1461 | ||
1462 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, | |
1463 | struct btrfs_chunk *c, int nr, | |
1464 | u64 val) | |
1465 | { | |
1466 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
1467 | } | |
1468 | ||
1469 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, | |
1470 | struct btrfs_chunk *c, int nr) | |
1471 | { | |
1472 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1473 | } | |
1474 | ||
1475 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, | |
1476 | struct btrfs_chunk *c, int nr, | |
1477 | u64 val) | |
1478 | { | |
1479 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
1480 | } | |
1481 | ||
5f39d397 CM |
1482 | /* struct btrfs_block_group_item */ |
1483 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1484 | used, 64); | |
1485 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1486 | used, 64); | |
0b86a832 CM |
1487 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1488 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1489 | |
1490 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1491 | struct btrfs_block_group_item, chunk_objectid, 64); |
1492 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1493 | struct btrfs_block_group_item, flags, 64); | |
1494 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1495 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1496 | |
3954401f CM |
1497 | /* struct btrfs_inode_ref */ |
1498 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1499 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1500 | |
5f39d397 CM |
1501 | /* struct btrfs_inode_item */ |
1502 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1503 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1504 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1505 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1506 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1507 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1508 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1509 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1510 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1511 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1512 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1513 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
1e1d2701 | 1514 | |
0b86a832 | 1515 | static inline struct btrfs_timespec * |
5f39d397 | 1516 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1517 | { |
5f39d397 CM |
1518 | unsigned long ptr = (unsigned long)inode_item; |
1519 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1520 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1521 | } |
1522 | ||
0b86a832 | 1523 | static inline struct btrfs_timespec * |
5f39d397 | 1524 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1525 | { |
5f39d397 CM |
1526 | unsigned long ptr = (unsigned long)inode_item; |
1527 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1528 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1529 | } |
1530 | ||
0b86a832 | 1531 | static inline struct btrfs_timespec * |
5f39d397 | 1532 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1533 | { |
5f39d397 CM |
1534 | unsigned long ptr = (unsigned long)inode_item; |
1535 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1536 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1537 | } |
1538 | ||
0b86a832 | 1539 | static inline struct btrfs_timespec * |
5f39d397 | 1540 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1541 | { |
5f39d397 CM |
1542 | unsigned long ptr = (unsigned long)inode_item; |
1543 | ptr += offsetof(struct btrfs_inode_item, otime); | |
0b86a832 | 1544 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1545 | } |
1546 | ||
0b86a832 CM |
1547 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1548 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1549 | |
0b86a832 | 1550 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1551 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1552 | chunk_tree, 64); | |
1553 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1554 | chunk_objectid, 64); | |
1555 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1556 | chunk_offset, 64); | |
0b86a832 CM |
1557 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1558 | ||
e17cade2 CM |
1559 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1560 | { | |
1561 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1562 | return (u8 *)((unsigned long)dev + ptr); | |
1563 | } | |
1564 | ||
5d4f98a2 YZ |
1565 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1566 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1567 | generation, 64); | |
1568 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1569 | |
5d4f98a2 YZ |
1570 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1571 | ||
1572 | ||
1573 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1574 | ||
1575 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1576 | struct btrfs_tree_block_info *item, | |
1577 | struct btrfs_disk_key *key) | |
1578 | { | |
1579 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1580 | } | |
1581 | ||
1582 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1583 | struct btrfs_tree_block_info *item, | |
1584 | struct btrfs_disk_key *key) | |
1585 | { | |
1586 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1587 | } | |
e20d96d6 | 1588 | |
5d4f98a2 YZ |
1589 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1590 | root, 64); | |
1591 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1592 | objectid, 64); | |
1593 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1594 | offset, 64); | |
1595 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1596 | count, 32); | |
1597 | ||
1598 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1599 | count, 32); | |
1600 | ||
1601 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1602 | type, 8); | |
1603 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1604 | offset, 64); | |
1605 | ||
1606 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1607 | { | |
1608 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1609 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1610 | return sizeof(struct btrfs_extent_inline_ref); | |
1611 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1612 | return sizeof(struct btrfs_shared_data_ref) + | |
1613 | sizeof(struct btrfs_extent_inline_ref); | |
1614 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1615 | return sizeof(struct btrfs_extent_data_ref) + | |
1616 | offsetof(struct btrfs_extent_inline_ref, offset); | |
1617 | BUG(); | |
1618 | return 0; | |
1619 | } | |
1620 | ||
1621 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1622 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1623 | generation, 64); | |
1624 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1625 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1626 | |
5f39d397 CM |
1627 | /* struct btrfs_node */ |
1628 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1629 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1630 | |
5f39d397 | 1631 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1632 | { |
5f39d397 CM |
1633 | unsigned long ptr; |
1634 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1635 | sizeof(struct btrfs_key_ptr) * nr; | |
1636 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1637 | } |
1638 | ||
5f39d397 CM |
1639 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1640 | int nr, u64 val) | |
cf27e1ee | 1641 | { |
5f39d397 CM |
1642 | unsigned long ptr; |
1643 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1644 | sizeof(struct btrfs_key_ptr) * nr; | |
1645 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1646 | } |
1647 | ||
74493f7a CM |
1648 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1649 | { | |
1650 | unsigned long ptr; | |
1651 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1652 | sizeof(struct btrfs_key_ptr) * nr; | |
1653 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1654 | } | |
1655 | ||
1656 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1657 | int nr, u64 val) | |
1658 | { | |
1659 | unsigned long ptr; | |
1660 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1661 | sizeof(struct btrfs_key_ptr) * nr; | |
1662 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1663 | } | |
1664 | ||
810191ff | 1665 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1666 | { |
5f39d397 CM |
1667 | return offsetof(struct btrfs_node, ptrs) + |
1668 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1669 | } |
1670 | ||
e644d021 CM |
1671 | void btrfs_node_key(struct extent_buffer *eb, |
1672 | struct btrfs_disk_key *disk_key, int nr); | |
1673 | ||
5f39d397 CM |
1674 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1675 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1676 | { |
5f39d397 CM |
1677 | unsigned long ptr; |
1678 | ptr = btrfs_node_key_ptr_offset(nr); | |
1679 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1680 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1681 | } |
1682 | ||
5f39d397 CM |
1683 | /* struct btrfs_item */ |
1684 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1685 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1686 | |
5f39d397 | 1687 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1688 | { |
5f39d397 CM |
1689 | return offsetof(struct btrfs_leaf, items) + |
1690 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1691 | } |
1692 | ||
5f39d397 CM |
1693 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1694 | int nr) | |
0783fcfc | 1695 | { |
5f39d397 | 1696 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1697 | } |
1698 | ||
5f39d397 CM |
1699 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1700 | struct btrfs_item *item) | |
0783fcfc | 1701 | { |
5f39d397 | 1702 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1703 | } |
1704 | ||
5f39d397 | 1705 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1706 | { |
5f39d397 | 1707 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1708 | } |
1709 | ||
5f39d397 | 1710 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1711 | { |
5f39d397 | 1712 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1713 | } |
1714 | ||
5f39d397 | 1715 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1716 | { |
5f39d397 | 1717 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1718 | } |
1719 | ||
5f39d397 CM |
1720 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1721 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1722 | { |
5f39d397 CM |
1723 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1724 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1725 | } |
1726 | ||
5f39d397 CM |
1727 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1728 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1729 | { |
5f39d397 CM |
1730 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1731 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1732 | } |
1733 | ||
e02119d5 CM |
1734 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1735 | ||
0660b5af CM |
1736 | /* |
1737 | * struct btrfs_root_ref | |
1738 | */ | |
1739 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1740 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1741 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1742 | ||
5f39d397 | 1743 | /* struct btrfs_dir_item */ |
5103e947 | 1744 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1745 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1746 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1747 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1748 | |
5f39d397 CM |
1749 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1750 | struct btrfs_dir_item *item, | |
1751 | struct btrfs_disk_key *key) | |
1d4f6404 | 1752 | { |
5f39d397 | 1753 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1754 | } |
1755 | ||
5f39d397 CM |
1756 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1757 | struct btrfs_dir_item *item, | |
1758 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1759 | { |
5f39d397 | 1760 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1761 | } |
1762 | ||
0af3d00b JB |
1763 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1764 | num_entries, 64); | |
1765 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1766 | num_bitmaps, 64); | |
1767 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1768 | generation, 64); | |
1769 | ||
1770 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
1771 | struct btrfs_free_space_header *h, | |
1772 | struct btrfs_disk_key *key) | |
1773 | { | |
1774 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1775 | } | |
1776 | ||
1777 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
1778 | struct btrfs_free_space_header *h, | |
1779 | struct btrfs_disk_key *key) | |
1780 | { | |
1781 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1782 | } | |
1783 | ||
5f39d397 CM |
1784 | /* struct btrfs_disk_key */ |
1785 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1786 | objectid, 64); | |
1787 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1788 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1789 | |
e2fa7227 CM |
1790 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1791 | struct btrfs_disk_key *disk) | |
1792 | { | |
1793 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1794 | cpu->type = disk->type; |
e2fa7227 CM |
1795 | cpu->objectid = le64_to_cpu(disk->objectid); |
1796 | } | |
1797 | ||
1798 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1799 | struct btrfs_key *cpu) | |
1800 | { | |
1801 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1802 | disk->type = cpu->type; |
e2fa7227 CM |
1803 | disk->objectid = cpu_to_le64(cpu->objectid); |
1804 | } | |
1805 | ||
5f39d397 CM |
1806 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1807 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1808 | { |
5f39d397 CM |
1809 | struct btrfs_disk_key disk_key; |
1810 | btrfs_node_key(eb, &disk_key, nr); | |
1811 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1812 | } |
1813 | ||
5f39d397 CM |
1814 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1815 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1816 | { |
5f39d397 CM |
1817 | struct btrfs_disk_key disk_key; |
1818 | btrfs_item_key(eb, &disk_key, nr); | |
1819 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1820 | } |
1821 | ||
5f39d397 CM |
1822 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1823 | struct btrfs_dir_item *item, | |
1824 | struct btrfs_key *key) | |
4d775673 | 1825 | { |
5f39d397 CM |
1826 | struct btrfs_disk_key disk_key; |
1827 | btrfs_dir_item_key(eb, item, &disk_key); | |
1828 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1829 | } |
1830 | ||
58176a96 | 1831 | |
5f39d397 | 1832 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1833 | { |
5f39d397 | 1834 | return key->type; |
3768f368 CM |
1835 | } |
1836 | ||
5f39d397 | 1837 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1838 | { |
5f39d397 | 1839 | key->type = val; |
3768f368 CM |
1840 | } |
1841 | ||
5f39d397 | 1842 | /* struct btrfs_header */ |
db94535d | 1843 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1844 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1845 | generation, 64); | |
1846 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1847 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1848 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1849 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1850 | |
63b10fc4 CM |
1851 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1852 | { | |
1853 | return (btrfs_header_flags(eb) & flag) == flag; | |
1854 | } | |
1855 | ||
1856 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1857 | { | |
1858 | u64 flags = btrfs_header_flags(eb); | |
1859 | btrfs_set_header_flags(eb, flags | flag); | |
1860 | return (flags & flag) == flag; | |
1861 | } | |
1862 | ||
1863 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1864 | { | |
1865 | u64 flags = btrfs_header_flags(eb); | |
1866 | btrfs_set_header_flags(eb, flags & ~flag); | |
1867 | return (flags & flag) == flag; | |
1868 | } | |
1869 | ||
5d4f98a2 YZ |
1870 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
1871 | { | |
1872 | u64 flags = btrfs_header_flags(eb); | |
1873 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
1874 | } | |
1875 | ||
1876 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
1877 | int rev) | |
1878 | { | |
1879 | u64 flags = btrfs_header_flags(eb); | |
1880 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
1881 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
1882 | btrfs_set_header_flags(eb, flags); | |
1883 | } | |
1884 | ||
5f39d397 | 1885 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1886 | { |
5f39d397 CM |
1887 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1888 | return (u8 *)ptr; | |
0f7d52f4 CM |
1889 | } |
1890 | ||
e17cade2 CM |
1891 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1892 | { | |
1893 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1894 | return (u8 *)ptr; | |
1895 | } | |
1896 | ||
5f39d397 | 1897 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 1898 | { |
5f39d397 CM |
1899 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
1900 | return (u8 *)ptr; | |
3768f368 CM |
1901 | } |
1902 | ||
5f39d397 | 1903 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 1904 | { |
5f39d397 CM |
1905 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
1906 | return (u8 *)ptr; | |
3768f368 CM |
1907 | } |
1908 | ||
5f39d397 | 1909 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 1910 | { |
5f39d397 | 1911 | return NULL; |
3768f368 CM |
1912 | } |
1913 | ||
5f39d397 | 1914 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 1915 | { |
5f39d397 | 1916 | return NULL; |
3768f368 CM |
1917 | } |
1918 | ||
5f39d397 | 1919 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 1920 | { |
5f39d397 | 1921 | return NULL; |
3768f368 CM |
1922 | } |
1923 | ||
5f39d397 | 1924 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1925 | { |
d397712b | 1926 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
1927 | } |
1928 | ||
5f39d397 | 1929 | /* struct btrfs_root_item */ |
84234f3a YZ |
1930 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
1931 | generation, 64); | |
5f39d397 | 1932 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
1933 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1934 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1935 | |
84234f3a YZ |
1936 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
1937 | generation, 64); | |
db94535d CM |
1938 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1939 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1940 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1941 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 1942 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
1943 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1944 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
1945 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
1946 | last_snapshot, 64); | |
123abc88 | 1947 | |
b83cc969 LZ |
1948 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
1949 | { | |
1950 | return root->root_item.flags & BTRFS_ROOT_SUBVOL_RDONLY; | |
1951 | } | |
1952 | ||
5f39d397 | 1953 | /* struct btrfs_super_block */ |
607d432d | 1954 | |
db94535d | 1955 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1956 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1957 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1958 | generation, 64); | |
1959 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1960 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1961 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
1962 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
1963 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
1964 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1965 | root_level, 8); | |
0b86a832 CM |
1966 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1967 | chunk_root, 64); | |
1968 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
1969 | chunk_root_level, 8); |
1970 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
1971 | log_root, 64); | |
c3027eb5 CM |
1972 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
1973 | log_root_transid, 64); | |
e02119d5 CM |
1974 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
1975 | log_root_level, 8); | |
db94535d CM |
1976 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1977 | total_bytes, 64); | |
1978 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1979 | bytes_used, 64); | |
5f39d397 CM |
1980 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1981 | sectorsize, 32); | |
1982 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1983 | nodesize, 32); | |
1984 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1985 | leafsize, 32); | |
87ee04eb CM |
1986 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1987 | stripesize, 32); | |
5f39d397 CM |
1988 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1989 | root_dir_objectid, 64); | |
8a4b83cc CM |
1990 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1991 | num_devices, 64); | |
f2b636e8 JB |
1992 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
1993 | compat_flags, 64); | |
1994 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 1995 | compat_ro_flags, 64); |
f2b636e8 JB |
1996 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
1997 | incompat_flags, 64); | |
607d432d JB |
1998 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
1999 | csum_type, 16); | |
0af3d00b JB |
2000 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2001 | cache_generation, 64); | |
607d432d JB |
2002 | |
2003 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2004 | { | |
2005 | int t = btrfs_super_csum_type(s); | |
2006 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); | |
2007 | return btrfs_csum_sizes[t]; | |
2008 | } | |
2e635a27 | 2009 | |
5f39d397 | 2010 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2011 | { |
5f39d397 | 2012 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2013 | } |
2014 | ||
5f39d397 CM |
2015 | /* struct btrfs_file_extent_item */ |
2016 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 2017 | |
d397712b CM |
2018 | static inline unsigned long |
2019 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2020 | { |
5f39d397 | 2021 | unsigned long offset = (unsigned long)e; |
db94535d | 2022 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 2023 | return offset; |
236454df CM |
2024 | } |
2025 | ||
2026 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2027 | { | |
db94535d | 2028 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
2029 | } |
2030 | ||
db94535d CM |
2031 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2032 | disk_bytenr, 64); | |
5f39d397 CM |
2033 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2034 | generation, 64); | |
db94535d CM |
2035 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2036 | disk_num_bytes, 64); | |
5f39d397 CM |
2037 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2038 | offset, 64); | |
db94535d CM |
2039 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2040 | num_bytes, 64); | |
c8b97818 CM |
2041 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2042 | ram_bytes, 64); | |
2043 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2044 | compression, 8); | |
2045 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2046 | encryption, 8); | |
2047 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2048 | other_encoding, 16); | |
2049 | ||
2050 | /* this returns the number of file bytes represented by the inline item. | |
2051 | * If an item is compressed, this is the uncompressed size | |
2052 | */ | |
2053 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2054 | struct btrfs_file_extent_item *e) | |
2055 | { | |
2056 | return btrfs_file_extent_ram_bytes(eb, e); | |
2057 | } | |
2058 | ||
2059 | /* | |
2060 | * this returns the number of bytes used by the item on disk, minus the | |
2061 | * size of any extent headers. If a file is compressed on disk, this is | |
2062 | * the compressed size | |
2063 | */ | |
2064 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2065 | struct btrfs_item *e) | |
2066 | { | |
2067 | unsigned long offset; | |
2068 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
2069 | return btrfs_item_size(eb, e) - offset; | |
2070 | } | |
9f5fae2f | 2071 | |
e20d96d6 CM |
2072 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
2073 | { | |
2074 | return sb->s_fs_info; | |
2075 | } | |
2076 | ||
58176a96 JB |
2077 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
2078 | const char *name, int len) | |
2079 | { | |
2080 | /* if we already have a name just free it */ | |
d397712b | 2081 | kfree(root->name); |
58176a96 JB |
2082 | |
2083 | root->name = kmalloc(len+1, GFP_KERNEL); | |
2084 | if (!root->name) | |
2085 | return -ENOMEM; | |
2086 | ||
2087 | memcpy(root->name, name, len); | |
d397712b | 2088 | root->name[len] = '\0'; |
58176a96 JB |
2089 | |
2090 | return 0; | |
2091 | } | |
2092 | ||
d397712b CM |
2093 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
2094 | { | |
db94535d CM |
2095 | if (level == 0) |
2096 | return root->leafsize; | |
2097 | return root->nodesize; | |
2098 | } | |
2099 | ||
4beb1b8b CM |
2100 | /* helper function to cast into the data area of the leaf. */ |
2101 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 2102 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
2103 | btrfs_item_offset_nr(leaf, slot))) |
2104 | ||
2105 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
2106 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
2107 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 2108 | |
2b1f55b0 CM |
2109 | static inline struct dentry *fdentry(struct file *file) |
2110 | { | |
6da6abae | 2111 | return file->f_path.dentry; |
6da6abae CM |
2112 | } |
2113 | ||
67377734 JB |
2114 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2115 | { | |
2116 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2117 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2118 | } | |
2119 | ||
b18c6685 | 2120 | /* extent-tree.c */ |
fa9c0d79 | 2121 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
2122 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
2123 | struct btrfs_root *root, unsigned long count); | |
31840ae1 | 2124 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
2125 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2126 | struct btrfs_root *root, u64 bytenr, | |
2127 | u64 num_bytes, u64 *refs, u64 *flags); | |
11833d66 YZ |
2128 | int btrfs_pin_extent(struct btrfs_root *root, |
2129 | u64 bytenr, u64 num, int reserved); | |
e02119d5 CM |
2130 | int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans, |
2131 | struct btrfs_root *root, struct extent_buffer *leaf); | |
80ff3856 | 2132 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2133 | struct btrfs_root *root, |
2134 | u64 objectid, u64 offset, u64 bytenr); | |
d1310b2e | 2135 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); |
d397712b CM |
2136 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2137 | struct btrfs_fs_info *info, | |
2138 | u64 bytenr); | |
5d4f98a2 | 2139 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
d2fb3437 YZ |
2140 | u64 btrfs_find_block_group(struct btrfs_root *root, |
2141 | u64 search_start, u64 search_hint, int owner); | |
5f39d397 | 2142 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2143 | struct btrfs_root *root, u32 blocksize, |
2144 | u64 parent, u64 root_objectid, | |
2145 | struct btrfs_disk_key *key, int level, | |
2146 | u64 hint, u64 empty_size); | |
f0486c68 YZ |
2147 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2148 | struct btrfs_root *root, | |
2149 | struct extent_buffer *buf, | |
2150 | u64 parent, int last_ref); | |
65b51a00 CM |
2151 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
2152 | struct btrfs_root *root, | |
4008c04a CM |
2153 | u64 bytenr, u32 blocksize, |
2154 | int level); | |
5d4f98a2 YZ |
2155 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
2156 | struct btrfs_root *root, | |
2157 | u64 root_objectid, u64 owner, | |
2158 | u64 offset, struct btrfs_key *ins); | |
2159 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, | |
2160 | struct btrfs_root *root, | |
2161 | u64 root_objectid, u64 owner, u64 offset, | |
2162 | struct btrfs_key *ins); | |
e6dcd2dc CM |
2163 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
2164 | struct btrfs_root *root, | |
2165 | u64 num_bytes, u64 min_alloc_size, | |
2166 | u64 empty_size, u64 hint_byte, | |
2167 | u64 search_end, struct btrfs_key *ins, | |
2168 | u64 data); | |
e089f05c | 2169 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
5d4f98a2 YZ |
2170 | struct extent_buffer *buf, int full_backref); |
2171 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
2172 | struct extent_buffer *buf, int full_backref); | |
2173 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, | |
2174 | struct btrfs_root *root, | |
2175 | u64 bytenr, u64 num_bytes, u64 flags, | |
2176 | int is_data); | |
31840ae1 ZY |
2177 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
2178 | struct btrfs_root *root, | |
2179 | u64 bytenr, u64 num_bytes, u64 parent, | |
5d4f98a2 YZ |
2180 | u64 root_objectid, u64 owner, u64 offset); |
2181 | ||
65b51a00 | 2182 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
b4d00d56 LD |
2183 | int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache, |
2184 | u64 num_bytes, int reserve, int sinfo); | |
11833d66 YZ |
2185 | int btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
2186 | struct btrfs_root *root); | |
ccd467d6 | 2187 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 2188 | struct btrfs_root *root); |
b18c6685 | 2189 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
2190 | struct btrfs_root *root, |
2191 | u64 bytenr, u64 num_bytes, u64 parent, | |
5d4f98a2 YZ |
2192 | u64 root_objectid, u64 owner, u64 offset); |
2193 | ||
9078a3e1 CM |
2194 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2195 | struct btrfs_root *root); | |
d2fb3437 | 2196 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
2197 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
2198 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 2199 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
2200 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
2201 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 2202 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 2203 | u64 size); |
1a40e23b ZY |
2204 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
2205 | struct btrfs_root *root, u64 group_start); | |
2b82032c | 2206 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
6d07bcec | 2207 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
6a63209f | 2208 | void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde); |
4184ea7f | 2209 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
0ca1f7ce YZ |
2210 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes); |
2211 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); | |
a22285a6 YZ |
2212 | int btrfs_trans_reserve_metadata(struct btrfs_trans_handle *trans, |
2213 | struct btrfs_root *root, | |
8bb8ab2e | 2214 | int num_items); |
a22285a6 YZ |
2215 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
2216 | struct btrfs_root *root); | |
d68fc57b YZ |
2217 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
2218 | struct inode *inode); | |
2219 | void btrfs_orphan_release_metadata(struct inode *inode); | |
a22285a6 YZ |
2220 | int btrfs_snap_reserve_metadata(struct btrfs_trans_handle *trans, |
2221 | struct btrfs_pending_snapshot *pending); | |
0ca1f7ce YZ |
2222 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
2223 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
2224 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); | |
2225 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); | |
f0486c68 YZ |
2226 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv); |
2227 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root); | |
2228 | void btrfs_free_block_rsv(struct btrfs_root *root, | |
2229 | struct btrfs_block_rsv *rsv); | |
2230 | void btrfs_add_durable_block_rsv(struct btrfs_fs_info *fs_info, | |
2231 | struct btrfs_block_rsv *rsv); | |
2232 | int btrfs_block_rsv_add(struct btrfs_trans_handle *trans, | |
2233 | struct btrfs_root *root, | |
2234 | struct btrfs_block_rsv *block_rsv, | |
8bb8ab2e | 2235 | u64 num_bytes); |
f0486c68 YZ |
2236 | int btrfs_block_rsv_check(struct btrfs_trans_handle *trans, |
2237 | struct btrfs_root *root, | |
2238 | struct btrfs_block_rsv *block_rsv, | |
2239 | u64 min_reserved, int min_factor); | |
2240 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, | |
2241 | struct btrfs_block_rsv *dst_rsv, | |
2242 | u64 num_bytes); | |
2243 | void btrfs_block_rsv_release(struct btrfs_root *root, | |
2244 | struct btrfs_block_rsv *block_rsv, | |
2245 | u64 num_bytes); | |
2246 | int btrfs_set_block_group_ro(struct btrfs_root *root, | |
2247 | struct btrfs_block_group_cache *cache); | |
2248 | int btrfs_set_block_group_rw(struct btrfs_root *root, | |
2249 | struct btrfs_block_group_cache *cache); | |
0af3d00b | 2250 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2251 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 2252 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
2253 | u64 start, u64 end); | |
2254 | int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, | |
5378e607 | 2255 | u64 num_bytes, u64 *actual_bytes); |
c87f08ca CM |
2256 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
2257 | struct btrfs_root *root, u64 type); | |
f7039b1d | 2258 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 2259 | |
c59021f8 | 2260 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
dee26a9f | 2261 | /* ctree.c */ |
5d4f98a2 YZ |
2262 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
2263 | int level, int *slot); | |
2264 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
2265 | int btrfs_previous_item(struct btrfs_root *root, |
2266 | struct btrfs_path *path, u64 min_objectid, | |
2267 | int type); | |
31840ae1 ZY |
2268 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
2269 | struct btrfs_root *root, struct btrfs_path *path, | |
2270 | struct btrfs_key *new_key); | |
925baedd CM |
2271 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2272 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 2273 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
2274 | struct btrfs_key *key, int lowest_level, |
2275 | int cache_only, u64 min_trans); | |
2276 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 2277 | struct btrfs_key *max_key, |
3f157a2f CM |
2278 | struct btrfs_path *path, int cache_only, |
2279 | u64 min_trans); | |
5f39d397 CM |
2280 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2281 | struct btrfs_root *root, struct extent_buffer *buf, | |
2282 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2283 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2284 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2285 | struct btrfs_root *root, | |
2286 | struct extent_buffer *buf, | |
2287 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2288 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2289 | struct extent_buffer *buf); | |
6567e837 CM |
2290 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2291 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
2292 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
2293 | struct btrfs_root *root, | |
2294 | struct btrfs_path *path, | |
179e29e4 | 2295 | u32 new_size, int from_end); |
459931ec CM |
2296 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2297 | struct btrfs_root *root, | |
2298 | struct btrfs_path *path, | |
2299 | struct btrfs_key *new_key, | |
2300 | unsigned long split_offset); | |
ad48fd75 YZ |
2301 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2302 | struct btrfs_root *root, | |
2303 | struct btrfs_path *path, | |
2304 | struct btrfs_key *new_key); | |
e089f05c CM |
2305 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
2306 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
2307 | ins_len, int cow); | |
6702ed49 | 2308 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2309 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
2310 | int start_slot, int cache_only, u64 *last_ret, |
2311 | struct btrfs_key *progress); | |
234b63a0 | 2312 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
2313 | struct btrfs_path *btrfs_alloc_path(void); |
2314 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2315 | void btrfs_set_path_blocking(struct btrfs_path *p); |
b4ce94de CM |
2316 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2317 | ||
85e21bac CM |
2318 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2319 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2320 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2321 | struct btrfs_root *root, | |
2322 | struct btrfs_path *path) | |
2323 | { | |
2324 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2325 | } | |
2326 | ||
e089f05c CM |
2327 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2328 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
f3465ca4 JB |
2329 | int btrfs_insert_some_items(struct btrfs_trans_handle *trans, |
2330 | struct btrfs_root *root, | |
2331 | struct btrfs_path *path, | |
2332 | struct btrfs_key *cpu_key, u32 *data_size, | |
2333 | int nr); | |
9c58309d CM |
2334 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2335 | struct btrfs_root *root, | |
2336 | struct btrfs_path *path, | |
2337 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
2338 | ||
2339 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2340 | struct btrfs_root *root, | |
2341 | struct btrfs_path *path, | |
2342 | struct btrfs_key *key, | |
2343 | u32 data_size) | |
2344 | { | |
2345 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2346 | } | |
2347 | ||
234b63a0 | 2348 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 2349 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 2350 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
3fd0a558 YZ |
2351 | int btrfs_drop_snapshot(struct btrfs_root *root, |
2352 | struct btrfs_block_rsv *block_rsv, int update_ref); | |
f82d02d9 YZ |
2353 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2354 | struct btrfs_root *root, | |
2355 | struct extent_buffer *node, | |
2356 | struct extent_buffer *parent); | |
dee26a9f | 2357 | /* root-item.c */ |
ea9e8b11 | 2358 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
4df27c4d YZ |
2359 | struct btrfs_path *path, |
2360 | u64 root_id, u64 ref_id); | |
0660b5af CM |
2361 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
2362 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
2363 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
2364 | const char *name, int name_len); | |
2365 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
2366 | struct btrfs_root *tree_root, | |
2367 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 2368 | const char *name, int name_len); |
e089f05c CM |
2369 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2370 | struct btrfs_key *key); | |
2371 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2372 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2373 | *item); | |
2374 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2375 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2376 | *item); | |
2377 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
2378 | btrfs_root_item *item, struct btrfs_key *key); | |
bf4ef679 CM |
2379 | int btrfs_search_root(struct btrfs_root *root, u64 search_start, |
2380 | u64 *found_objectid); | |
5d4f98a2 | 2381 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid); |
76dda93c | 2382 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
5d4f98a2 YZ |
2383 | int btrfs_set_root_node(struct btrfs_root_item *item, |
2384 | struct extent_buffer *node); | |
08fe4db1 LZ |
2385 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
2386 | ||
dee26a9f | 2387 | /* dir-item.c */ |
d397712b CM |
2388 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
2389 | struct btrfs_root *root, const char *name, | |
2390 | int name_len, u64 dir, | |
aec7477b | 2391 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
2392 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
2393 | struct btrfs_root *root, | |
2394 | struct btrfs_path *path, u64 dir, | |
2395 | const char *name, int name_len, | |
2396 | int mod); | |
2397 | struct btrfs_dir_item * | |
2398 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
2399 | struct btrfs_root *root, | |
2400 | struct btrfs_path *path, u64 dir, | |
2401 | u64 objectid, const char *name, int name_len, | |
2402 | int mod); | |
4df27c4d YZ |
2403 | struct btrfs_dir_item * |
2404 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
2405 | struct btrfs_path *path, u64 dirid, | |
2406 | const char *name, int name_len); | |
7e38180e CM |
2407 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
2408 | struct btrfs_path *path, | |
7f5c1516 | 2409 | const char *name, int name_len); |
7e38180e CM |
2410 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
2411 | struct btrfs_root *root, | |
2412 | struct btrfs_path *path, | |
2413 | struct btrfs_dir_item *di); | |
5103e947 | 2414 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
2415 | struct btrfs_root *root, |
2416 | struct btrfs_path *path, u64 objectid, | |
2417 | const char *name, u16 name_len, | |
2418 | const void *data, u16 data_len); | |
5103e947 JB |
2419 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
2420 | struct btrfs_root *root, | |
2421 | struct btrfs_path *path, u64 dir, | |
2422 | const char *name, u16 name_len, | |
2423 | int mod); | |
22a94d44 JB |
2424 | int verify_dir_item(struct btrfs_root *root, |
2425 | struct extent_buffer *leaf, | |
2426 | struct btrfs_dir_item *dir_item); | |
7b128766 JB |
2427 | |
2428 | /* orphan.c */ | |
2429 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
2430 | struct btrfs_root *root, u64 offset); | |
2431 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
2432 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 2433 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 2434 | |
dee26a9f | 2435 | /* inode-map.c */ |
9f5fae2f CM |
2436 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
2437 | struct btrfs_root *fs_root, | |
2438 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
2439 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
2440 | ||
dee26a9f | 2441 | /* inode-item.c */ |
3954401f CM |
2442 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
2443 | struct btrfs_root *root, | |
2444 | const char *name, int name_len, | |
aec7477b | 2445 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
2446 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
2447 | struct btrfs_root *root, | |
2448 | const char *name, int name_len, | |
aec7477b | 2449 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
a22285a6 YZ |
2450 | struct btrfs_inode_ref * |
2451 | btrfs_lookup_inode_ref(struct btrfs_trans_handle *trans, | |
2452 | struct btrfs_root *root, | |
2453 | struct btrfs_path *path, | |
2454 | const char *name, int name_len, | |
2455 | u64 inode_objectid, u64 ref_objectid, int mod); | |
5f39d397 CM |
2456 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
2457 | struct btrfs_root *root, | |
2458 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 2459 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
2460 | *root, struct btrfs_path *path, |
2461 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
2462 | |
2463 | /* file-item.c */ | |
459931ec CM |
2464 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
2465 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 2466 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2467 | struct bio *bio, u32 *dst); |
4b46fce2 JB |
2468 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
2469 | struct bio *bio, u64 logical_offset, u32 *dst); | |
b18c6685 | 2470 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
2471 | struct btrfs_root *root, |
2472 | u64 objectid, u64 pos, | |
2473 | u64 disk_offset, u64 disk_num_bytes, | |
2474 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
2475 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
2476 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
2477 | struct btrfs_root *root, | |
2478 | struct btrfs_path *path, u64 objectid, | |
db94535d | 2479 | u64 bytenr, int mod); |
065631f6 | 2480 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 2481 | struct btrfs_root *root, |
e6dcd2dc | 2482 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 2483 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2484 | struct bio *bio, u64 file_start, int contig); |
c8b97818 CM |
2485 | int btrfs_csum_file_bytes(struct btrfs_root *root, struct inode *inode, |
2486 | u64 start, unsigned long len); | |
b18c6685 CM |
2487 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
2488 | struct btrfs_root *root, | |
2489 | struct btrfs_path *path, | |
d20f7043 | 2490 | u64 bytenr, int cow); |
1de037a4 CM |
2491 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
2492 | struct btrfs_root *root, struct btrfs_path *path, | |
2493 | u64 isize); | |
a2de733c AJ |
2494 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
2495 | struct list_head *list, int search_commit); | |
39279cc3 | 2496 | /* inode.c */ |
4881ee5a CM |
2497 | |
2498 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 2499 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
2500 | #define ClearPageChecked ClearPageFsMisc |
2501 | #define SetPageChecked SetPageFsMisc | |
2502 | #define PageChecked PageFsMisc | |
2503 | #endif | |
2504 | ||
3de4586c CM |
2505 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
2506 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
2507 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
2508 | struct btrfs_root *root, | |
2509 | struct inode *dir, struct inode *inode, | |
2510 | const char *name, int name_len); | |
2511 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
2512 | struct inode *parent_inode, struct inode *inode, | |
2513 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
2514 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
2515 | struct btrfs_root *root, | |
2516 | struct inode *dir, u64 objectid, | |
2517 | const char *name, int name_len); | |
e02119d5 CM |
2518 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
2519 | struct btrfs_root *root, | |
2520 | struct inode *inode, u64 new_size, | |
2521 | u32 min_type); | |
2522 | ||
24bbcf04 | 2523 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
0019f10d JB |
2524 | int btrfs_start_one_delalloc_inode(struct btrfs_root *root, int delay_iput, |
2525 | int sync); | |
2ac55d41 JB |
2526 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
2527 | struct extent_state **cached_state); | |
f421950f CM |
2528 | int btrfs_writepages(struct address_space *mapping, |
2529 | struct writeback_control *wbc); | |
d2fb3437 | 2530 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
76dda93c | 2531 | struct btrfs_root *new_root, |
d2fb3437 | 2532 | u64 new_dirid, u64 alloc_hint); |
239b14b3 | 2533 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 2534 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 2535 | |
edbd8d4e CM |
2536 | unsigned long btrfs_force_ra(struct address_space *mapping, |
2537 | struct file_ra_state *ra, struct file *file, | |
2538 | pgoff_t offset, pgoff_t last_index); | |
c2ec175c | 2539 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 2540 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 2541 | void btrfs_evict_inode(struct inode *inode); |
2da98f00 | 2542 | void btrfs_put_inode(struct inode *inode); |
a9185b41 | 2543 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
2544 | void btrfs_dirty_inode(struct inode *inode); |
2545 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
2546 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 2547 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
2548 | int btrfs_init_cachep(void); |
2549 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 2550 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 2551 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 2552 | struct btrfs_root *root, int *was_new); |
39279cc3 CM |
2553 | int btrfs_commit_write(struct file *file, struct page *page, |
2554 | unsigned from, unsigned to); | |
a52d9a80 CM |
2555 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
2556 | size_t page_offset, u64 start, u64 end, | |
2557 | int create); | |
2558 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
2559 | struct btrfs_root *root, | |
2560 | struct inode *inode); | |
5b21f2ed ZY |
2561 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
2562 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
66b4ffd1 | 2563 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
2564 | void btrfs_orphan_pre_snapshot(struct btrfs_trans_handle *trans, |
2565 | struct btrfs_pending_snapshot *pending, | |
2566 | u64 *bytes_to_reserve); | |
2567 | void btrfs_orphan_post_snapshot(struct btrfs_trans_handle *trans, | |
2568 | struct btrfs_pending_snapshot *pending); | |
2569 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, | |
2570 | struct btrfs_root *root); | |
a41ad394 | 2571 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
76dda93c | 2572 | int btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
2573 | void btrfs_add_delayed_iput(struct inode *inode); |
2574 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
2575 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
2576 | u64 start, u64 num_bytes, u64 min_size, | |
2577 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
2578 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
2579 | struct btrfs_trans_handle *trans, int mode, | |
2580 | u64 start, u64 num_bytes, u64 min_size, | |
2581 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 2582 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
2583 | |
2584 | /* ioctl.c */ | |
2585 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
6cbff00f CH |
2586 | void btrfs_update_iflags(struct inode *inode); |
2587 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
f46b5a66 | 2588 | |
39279cc3 | 2589 | /* file.c */ |
7ea80859 | 2590 | int btrfs_sync_file(struct file *file, int datasync); |
5b21f2ed ZY |
2591 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
2592 | int skip_pinned); | |
5f56406a | 2593 | int btrfs_check_file(struct btrfs_root *root, struct inode *inode); |
828c0950 | 2594 | extern const struct file_operations btrfs_file_operations; |
920bbbfb YZ |
2595 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode, |
2596 | u64 start, u64 end, u64 *hint_byte, int drop_cache); | |
d899e052 | 2597 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 2598 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 2599 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
2600 | void btrfs_drop_pages(struct page **pages, size_t num_pages); |
2601 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, | |
2602 | struct page **pages, size_t num_pages, | |
2603 | loff_t pos, size_t write_bytes, | |
2604 | struct extent_state **cached); | |
6bf13c0c | 2605 | |
6702ed49 CM |
2606 | /* tree-defrag.c */ |
2607 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
2608 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
2609 | |
2610 | /* sysfs.c */ | |
2611 | int btrfs_init_sysfs(void); | |
2612 | void btrfs_exit_sysfs(void); | |
2613 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
2614 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
2615 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
2616 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
2617 | ||
5103e947 JB |
2618 | /* xattr.c */ |
2619 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 2620 | |
edbd8d4e | 2621 | /* super.c */ |
edf24abe | 2622 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 2623 | int btrfs_sync_fs(struct super_block *sb, int wait); |
acce952b | 2624 | void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, |
2625 | unsigned int line, int errno); | |
2626 | ||
2627 | #define btrfs_std_error(fs_info, errno) \ | |
2628 | do { \ | |
2629 | if ((errno)) \ | |
2630 | __btrfs_std_error((fs_info), __func__, __LINE__, (errno));\ | |
2631 | } while (0) | |
33268eaf JB |
2632 | |
2633 | /* acl.c */ | |
0eda294d | 2634 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
b74c79e9 | 2635 | int btrfs_check_acl(struct inode *inode, int mask, unsigned int flags); |
7df336ec AV |
2636 | #else |
2637 | #define btrfs_check_acl NULL | |
2638 | #endif | |
f34f57a3 YZ |
2639 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
2640 | struct inode *inode, struct inode *dir); | |
33268eaf | 2641 | int btrfs_acl_chmod(struct inode *inode); |
0f9dd46c | 2642 | |
5d4f98a2 YZ |
2643 | /* relocation.c */ |
2644 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
2645 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
2646 | struct btrfs_root *root); | |
2647 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
2648 | struct btrfs_root *root); | |
2649 | int btrfs_recover_relocation(struct btrfs_root *root); | |
2650 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
3fd0a558 YZ |
2651 | void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
2652 | struct btrfs_root *root, struct extent_buffer *buf, | |
2653 | struct extent_buffer *cow); | |
2654 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, | |
2655 | struct btrfs_pending_snapshot *pending, | |
2656 | u64 *bytes_to_reserve); | |
2657 | void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, | |
2658 | struct btrfs_pending_snapshot *pending); | |
a2de733c AJ |
2659 | |
2660 | /* scrub.c */ | |
2661 | int btrfs_scrub_dev(struct btrfs_root *root, u64 devid, u64 start, u64 end, | |
2662 | struct btrfs_scrub_progress *progress); | |
2663 | int btrfs_scrub_pause(struct btrfs_root *root); | |
2664 | int btrfs_scrub_pause_super(struct btrfs_root *root); | |
2665 | int btrfs_scrub_continue(struct btrfs_root *root); | |
2666 | int btrfs_scrub_continue_super(struct btrfs_root *root); | |
2667 | int btrfs_scrub_cancel(struct btrfs_root *root); | |
2668 | int btrfs_scrub_cancel_dev(struct btrfs_root *root, struct btrfs_device *dev); | |
2669 | int btrfs_scrub_cancel_devid(struct btrfs_root *root, u64 devid); | |
2670 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, | |
2671 | struct btrfs_scrub_progress *progress); | |
2672 | ||
eb60ceac | 2673 | #endif |