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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> |
58176a96 | 26 | #include <linux/completion.h> |
04160088 | 27 | #include <linux/backing-dev.h> |
e6dcd2dc | 28 | #include <linux/wait.h> |
479965d6 | 29 | #include <asm/kmap_types.h> |
d1310b2e | 30 | #include "extent_io.h" |
5f39d397 | 31 | #include "extent_map.h" |
8b712842 | 32 | #include "async-thread.h" |
e20d96d6 | 33 | |
e089f05c | 34 | struct btrfs_trans_handle; |
79154b1b | 35 | struct btrfs_transaction; |
35b7e476 CM |
36 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
37 | extern struct kmem_cache *btrfs_transaction_cachep; | |
38 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 39 | extern struct kmem_cache *btrfs_path_cachep; |
e6dcd2dc | 40 | struct btrfs_ordered_sum; |
e089f05c | 41 | |
2a7108ad | 42 | #define BTRFS_MAGIC "_BHRfS_M" |
eb60ceac | 43 | |
33268eaf JB |
44 | #define BTRFS_ACL_NOT_CACHED ((void *)-1) |
45 | ||
4008c04a | 46 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 CM |
47 | |
48 | /* holds pointers to all of the tree roots */ | |
6407bf6d | 49 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
50 | |
51 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 52 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 53 | |
0b86a832 CM |
54 | /* |
55 | * chunk tree stores translations from logical -> physical block numbering | |
56 | * the super block points to the chunk tree | |
57 | */ | |
e085def2 | 58 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
59 | |
60 | /* | |
61 | * stores information about which areas of a given device are in use. | |
62 | * one per device. The tree of tree roots points to the device tree | |
63 | */ | |
e085def2 CM |
64 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
65 | ||
66 | /* one per subvolume, storing files and directories */ | |
67 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
68 | ||
69 | /* directory objectid inside the root tree */ | |
70 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 71 | |
d20f7043 CM |
72 | /* holds checksums of all the data extents */ |
73 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
74 | ||
7b128766 JB |
75 | /* orhpan objectid for tracking unlinked/truncated files */ |
76 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
77 | ||
e02119d5 CM |
78 | /* does write ahead logging to speed up fsyncs */ |
79 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
80 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
81 | ||
e4657689 ZY |
82 | /* for space balancing */ |
83 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
84 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
85 | ||
d20f7043 CM |
86 | /* |
87 | * extent checksums all have this objectid | |
88 | * this allows them to share the logging tree | |
89 | * for fsyncs | |
90 | */ | |
91 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
92 | ||
31840ae1 ZY |
93 | /* dummy objectid represents multiple objectids */ |
94 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
95 | ||
0b86a832 | 96 | /* |
6527cdbe | 97 | * All files have objectids in this range. |
0b86a832 | 98 | */ |
f6dbff55 | 99 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 100 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 101 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 102 | |
0b86a832 CM |
103 | |
104 | /* | |
105 | * the device items go into the chunk tree. The key is in the form | |
106 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
107 | */ | |
108 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
109 | ||
e20d96d6 CM |
110 | /* |
111 | * we can actually store much bigger names, but lets not confuse the rest | |
112 | * of linux | |
113 | */ | |
114 | #define BTRFS_NAME_LEN 255 | |
115 | ||
f254e52c CM |
116 | /* 32 bytes in various csum fields */ |
117 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
118 | |
119 | /* csum types */ | |
120 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
121 | ||
122 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
123 | ||
509659cd | 124 | /* four bytes for CRC32 */ |
3954401f | 125 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 126 | |
fabb5681 CM |
127 | #define BTRFS_FT_UNKNOWN 0 |
128 | #define BTRFS_FT_REG_FILE 1 | |
129 | #define BTRFS_FT_DIR 2 | |
130 | #define BTRFS_FT_CHRDEV 3 | |
131 | #define BTRFS_FT_BLKDEV 4 | |
132 | #define BTRFS_FT_FIFO 5 | |
133 | #define BTRFS_FT_SOCK 6 | |
134 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
135 | #define BTRFS_FT_XATTR 8 |
136 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 137 | |
fec577fb CM |
138 | /* |
139 | * the key defines the order in the tree, and so it also defines (optimal) | |
140 | * block layout. objectid corresonds to the inode number. The flags | |
141 | * tells us things about the object, and is a kind of stream selector. | |
142 | * so for a given inode, keys with flags of 1 might refer to the inode | |
143 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
144 | * may point to extents. | |
145 | * | |
146 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
147 | * |
148 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
149 | * in cpu native order. Otherwise they are identical and their sizes | |
150 | * should be the same (ie both packed) | |
fec577fb | 151 | */ |
e2fa7227 CM |
152 | struct btrfs_disk_key { |
153 | __le64 objectid; | |
5f39d397 | 154 | u8 type; |
70b2befd | 155 | __le64 offset; |
e2fa7227 CM |
156 | } __attribute__ ((__packed__)); |
157 | ||
158 | struct btrfs_key { | |
eb60ceac | 159 | u64 objectid; |
5f39d397 | 160 | u8 type; |
70b2befd | 161 | u64 offset; |
eb60ceac CM |
162 | } __attribute__ ((__packed__)); |
163 | ||
0b86a832 CM |
164 | struct btrfs_mapping_tree { |
165 | struct extent_map_tree map_tree; | |
166 | }; | |
167 | ||
e17cade2 | 168 | #define BTRFS_UUID_SIZE 16 |
0b86a832 CM |
169 | struct btrfs_dev_item { |
170 | /* the internal btrfs device id */ | |
171 | __le64 devid; | |
172 | ||
173 | /* size of the device */ | |
174 | __le64 total_bytes; | |
175 | ||
176 | /* bytes used */ | |
177 | __le64 bytes_used; | |
178 | ||
179 | /* optimal io alignment for this device */ | |
180 | __le32 io_align; | |
181 | ||
182 | /* optimal io width for this device */ | |
183 | __le32 io_width; | |
184 | ||
185 | /* minimal io size for this device */ | |
186 | __le32 sector_size; | |
187 | ||
0b86a832 CM |
188 | /* type and info about this device */ |
189 | __le64 type; | |
190 | ||
2b82032c YZ |
191 | /* expected generation for this device */ |
192 | __le64 generation; | |
193 | ||
c3027eb5 CM |
194 | /* |
195 | * starting byte of this partition on the device, | |
196 | * to allowr for stripe alignment in the future | |
197 | */ | |
198 | __le64 start_offset; | |
199 | ||
e17cade2 CM |
200 | /* grouping information for allocation decisions */ |
201 | __le32 dev_group; | |
202 | ||
203 | /* seek speed 0-100 where 100 is fastest */ | |
204 | u8 seek_speed; | |
205 | ||
206 | /* bandwidth 0-100 where 100 is fastest */ | |
207 | u8 bandwidth; | |
208 | ||
0d81ba5d | 209 | /* btrfs generated uuid for this device */ |
e17cade2 | 210 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
211 | |
212 | /* uuid of FS who owns this device */ | |
213 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
214 | } __attribute__ ((__packed__)); |
215 | ||
216 | struct btrfs_stripe { | |
217 | __le64 devid; | |
218 | __le64 offset; | |
e17cade2 | 219 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
220 | } __attribute__ ((__packed__)); |
221 | ||
222 | struct btrfs_chunk { | |
e17cade2 CM |
223 | /* size of this chunk in bytes */ |
224 | __le64 length; | |
225 | ||
226 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 227 | __le64 owner; |
e17cade2 | 228 | |
0b86a832 CM |
229 | __le64 stripe_len; |
230 | __le64 type; | |
231 | ||
232 | /* optimal io alignment for this chunk */ | |
233 | __le32 io_align; | |
234 | ||
235 | /* optimal io width for this chunk */ | |
236 | __le32 io_width; | |
237 | ||
238 | /* minimal io size for this chunk */ | |
239 | __le32 sector_size; | |
240 | ||
241 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
242 | * item in the btree | |
243 | */ | |
244 | __le16 num_stripes; | |
321aecc6 CM |
245 | |
246 | /* sub stripes only matter for raid10 */ | |
247 | __le16 sub_stripes; | |
0b86a832 CM |
248 | struct btrfs_stripe stripe; |
249 | /* additional stripes go here */ | |
250 | } __attribute__ ((__packed__)); | |
251 | ||
252 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) | |
253 | { | |
254 | BUG_ON(num_stripes == 0); | |
255 | return sizeof(struct btrfs_chunk) + | |
256 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
257 | } | |
258 | ||
5f39d397 | 259 | #define BTRFS_FSID_SIZE 16 |
63b10fc4 CM |
260 | #define BTRFS_HEADER_FLAG_WRITTEN (1 << 0) |
261 | ||
fec577fb CM |
262 | /* |
263 | * every tree block (leaf or node) starts with this header. | |
264 | */ | |
bb492bb0 | 265 | struct btrfs_header { |
e17cade2 | 266 | /* these first four must match the super block */ |
f254e52c | 267 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 268 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 269 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 270 | __le64 flags; |
e17cade2 CM |
271 | |
272 | /* allowed to be different from the super from here on down */ | |
273 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 274 | __le64 generation; |
4d775673 | 275 | __le64 owner; |
5f39d397 | 276 | __le32 nritems; |
9a6f11ed | 277 | u8 level; |
eb60ceac CM |
278 | } __attribute__ ((__packed__)); |
279 | ||
5f39d397 | 280 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
281 | sizeof(struct btrfs_header)) / \ |
282 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 283 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 284 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
285 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
286 | sizeof(struct btrfs_item) - \ | |
287 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 288 | |
2b82032c | 289 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
0b86a832 CM |
290 | |
291 | /* | |
292 | * this is a very generous portion of the super block, giving us | |
293 | * room to translate 14 chunks with 3 stripes each. | |
294 | */ | |
295 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 296 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 297 | |
fec577fb CM |
298 | /* |
299 | * the super block basically lists the main trees of the FS | |
300 | * it currently lacks any block count etc etc | |
301 | */ | |
234b63a0 | 302 | struct btrfs_super_block { |
f254e52c | 303 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 304 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 305 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 306 | __le64 bytenr; /* this block number */ |
63b10fc4 | 307 | __le64 flags; |
e17cade2 CM |
308 | |
309 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 310 | __le64 magic; |
3768f368 CM |
311 | __le64 generation; |
312 | __le64 root; | |
0b86a832 | 313 | __le64 chunk_root; |
e02119d5 | 314 | __le64 log_root; |
c3027eb5 CM |
315 | |
316 | /* this will help find the new super based on the log root */ | |
317 | __le64 log_root_transid; | |
db94535d CM |
318 | __le64 total_bytes; |
319 | __le64 bytes_used; | |
2e635a27 | 320 | __le64 root_dir_objectid; |
8a4b83cc | 321 | __le64 num_devices; |
5f39d397 CM |
322 | __le32 sectorsize; |
323 | __le32 nodesize; | |
324 | __le32 leafsize; | |
87ee04eb | 325 | __le32 stripesize; |
0b86a832 | 326 | __le32 sys_chunk_array_size; |
84234f3a | 327 | __le64 chunk_root_generation; |
f2b636e8 JB |
328 | __le64 compat_flags; |
329 | __le64 compat_ro_flags; | |
330 | __le64 incompat_flags; | |
607d432d | 331 | __le16 csum_type; |
db94535d | 332 | u8 root_level; |
0b86a832 | 333 | u8 chunk_root_level; |
e02119d5 | 334 | u8 log_root_level; |
0d81ba5d | 335 | struct btrfs_dev_item dev_item; |
c3027eb5 | 336 | |
7ae9c09d | 337 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 CM |
338 | |
339 | /* future expansion */ | |
340 | __le64 reserved[32]; | |
0b86a832 | 341 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
cfaa7295 CM |
342 | } __attribute__ ((__packed__)); |
343 | ||
f2b636e8 JB |
344 | /* |
345 | * Compat flags that we support. If any incompat flags are set other than the | |
346 | * ones specified below then we will fail to mount | |
347 | */ | |
348 | #define BTRFS_FEATURE_COMPAT_SUPP 0x0 | |
349 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0x0 | |
350 | #define BTRFS_FEATURE_INCOMPAT_SUPP 0x0 | |
351 | ||
fec577fb | 352 | /* |
62e2749e | 353 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
354 | * the item in the leaf (relative to the start of the data area) |
355 | */ | |
0783fcfc | 356 | struct btrfs_item { |
e2fa7227 | 357 | struct btrfs_disk_key key; |
123abc88 | 358 | __le32 offset; |
5f39d397 | 359 | __le32 size; |
eb60ceac CM |
360 | } __attribute__ ((__packed__)); |
361 | ||
fec577fb CM |
362 | /* |
363 | * leaves have an item area and a data area: | |
364 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
365 | * | |
366 | * The data is separate from the items to get the keys closer together | |
367 | * during searches. | |
368 | */ | |
234b63a0 | 369 | struct btrfs_leaf { |
bb492bb0 | 370 | struct btrfs_header header; |
123abc88 | 371 | struct btrfs_item items[]; |
eb60ceac CM |
372 | } __attribute__ ((__packed__)); |
373 | ||
fec577fb CM |
374 | /* |
375 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
376 | * other blocks | |
377 | */ | |
123abc88 CM |
378 | struct btrfs_key_ptr { |
379 | struct btrfs_disk_key key; | |
380 | __le64 blockptr; | |
74493f7a | 381 | __le64 generation; |
123abc88 CM |
382 | } __attribute__ ((__packed__)); |
383 | ||
234b63a0 | 384 | struct btrfs_node { |
bb492bb0 | 385 | struct btrfs_header header; |
123abc88 | 386 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
387 | } __attribute__ ((__packed__)); |
388 | ||
fec577fb | 389 | /* |
234b63a0 CM |
390 | * btrfs_paths remember the path taken from the root down to the leaf. |
391 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
392 | * to any other levels that are present. |
393 | * | |
394 | * The slots array records the index of the item or block pointer | |
395 | * used while walking the tree. | |
396 | */ | |
234b63a0 | 397 | struct btrfs_path { |
5f39d397 | 398 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 399 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
400 | /* if there is real range locking, this locks field will change */ |
401 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 402 | int reada; |
925baedd | 403 | /* keep some upper locks as we walk down */ |
6702ed49 | 404 | int lowest_level; |
459931ec CM |
405 | |
406 | /* | |
407 | * set by btrfs_split_item, tells search_slot to keep all locks | |
408 | * and to force calls to keep space in the nodes | |
409 | */ | |
b9473439 CM |
410 | unsigned int search_for_split:1; |
411 | unsigned int keep_locks:1; | |
412 | unsigned int skip_locking:1; | |
413 | unsigned int leave_spinning:1; | |
eb60ceac | 414 | }; |
5de08d7d | 415 | |
62e2749e CM |
416 | /* |
417 | * items in the extent btree are used to record the objectid of the | |
418 | * owner of the block and the number of references | |
419 | */ | |
420 | struct btrfs_extent_item { | |
421 | __le32 refs; | |
74493f7a CM |
422 | } __attribute__ ((__packed__)); |
423 | ||
424 | struct btrfs_extent_ref { | |
425 | __le64 root; | |
426 | __le64 generation; | |
427 | __le64 objectid; | |
31840ae1 | 428 | __le32 num_refs; |
62e2749e CM |
429 | } __attribute__ ((__packed__)); |
430 | ||
0b86a832 CM |
431 | /* dev extents record free space on individual devices. The owner |
432 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 433 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
434 | */ |
435 | struct btrfs_dev_extent { | |
e17cade2 CM |
436 | __le64 chunk_tree; |
437 | __le64 chunk_objectid; | |
438 | __le64 chunk_offset; | |
0b86a832 | 439 | __le64 length; |
e17cade2 | 440 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
441 | } __attribute__ ((__packed__)); |
442 | ||
3954401f | 443 | struct btrfs_inode_ref { |
aec7477b | 444 | __le64 index; |
3954401f CM |
445 | __le16 name_len; |
446 | /* name goes here */ | |
447 | } __attribute__ ((__packed__)); | |
448 | ||
0b86a832 | 449 | struct btrfs_timespec { |
f254e52c | 450 | __le64 sec; |
1e1d2701 CM |
451 | __le32 nsec; |
452 | } __attribute__ ((__packed__)); | |
453 | ||
95029d7d | 454 | enum btrfs_compression_type { |
c8b97818 CM |
455 | BTRFS_COMPRESS_NONE = 0, |
456 | BTRFS_COMPRESS_ZLIB = 1, | |
457 | BTRFS_COMPRESS_LAST = 2, | |
95029d7d | 458 | }; |
c8b97818 | 459 | |
1e1d2701 | 460 | struct btrfs_inode_item { |
e02119d5 | 461 | /* nfs style generation number */ |
1e1d2701 | 462 | __le64 generation; |
e02119d5 CM |
463 | /* transid that last touched this inode */ |
464 | __le64 transid; | |
1e1d2701 | 465 | __le64 size; |
a76a3cd4 | 466 | __le64 nbytes; |
31f3c99b | 467 | __le64 block_group; |
1e1d2701 CM |
468 | __le32 nlink; |
469 | __le32 uid; | |
470 | __le32 gid; | |
471 | __le32 mode; | |
0b86a832 | 472 | __le64 rdev; |
f2b636e8 | 473 | __le64 flags; |
c8b97818 | 474 | |
c3027eb5 CM |
475 | /* modification sequence number for NFS */ |
476 | __le64 sequence; | |
477 | ||
478 | /* | |
479 | * a little future expansion, for more than this we can | |
480 | * just grow the inode item and version it | |
481 | */ | |
482 | __le64 reserved[4]; | |
0b86a832 CM |
483 | struct btrfs_timespec atime; |
484 | struct btrfs_timespec ctime; | |
485 | struct btrfs_timespec mtime; | |
486 | struct btrfs_timespec otime; | |
1e1d2701 CM |
487 | } __attribute__ ((__packed__)); |
488 | ||
e02119d5 CM |
489 | struct btrfs_dir_log_item { |
490 | __le64 end; | |
491 | } __attribute__ ((__packed__)); | |
492 | ||
62e2749e | 493 | struct btrfs_dir_item { |
d6e4a428 | 494 | struct btrfs_disk_key location; |
e02119d5 | 495 | __le64 transid; |
5103e947 | 496 | __le16 data_len; |
a8a2ee0c | 497 | __le16 name_len; |
62e2749e CM |
498 | u8 type; |
499 | } __attribute__ ((__packed__)); | |
500 | ||
501 | struct btrfs_root_item { | |
d6e4a428 | 502 | struct btrfs_inode_item inode; |
84234f3a | 503 | __le64 generation; |
d6e4a428 | 504 | __le64 root_dirid; |
db94535d CM |
505 | __le64 bytenr; |
506 | __le64 byte_limit; | |
507 | __le64 bytes_used; | |
80ff3856 | 508 | __le64 last_snapshot; |
f2b636e8 | 509 | __le64 flags; |
62e2749e | 510 | __le32 refs; |
5eda7b5e CM |
511 | struct btrfs_disk_key drop_progress; |
512 | u8 drop_level; | |
db94535d | 513 | u8 level; |
9f5fae2f | 514 | } __attribute__ ((__packed__)); |
62e2749e | 515 | |
0660b5af CM |
516 | /* |
517 | * this is used for both forward and backward root refs | |
518 | */ | |
519 | struct btrfs_root_ref { | |
520 | __le64 dirid; | |
521 | __le64 sequence; | |
522 | __le16 name_len; | |
523 | } __attribute__ ((__packed__)); | |
524 | ||
d899e052 YZ |
525 | #define BTRFS_FILE_EXTENT_INLINE 0 |
526 | #define BTRFS_FILE_EXTENT_REG 1 | |
527 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 528 | |
9f5fae2f | 529 | struct btrfs_file_extent_item { |
c8b97818 CM |
530 | /* |
531 | * transaction id that created this extent | |
532 | */ | |
71951f35 | 533 | __le64 generation; |
c8b97818 CM |
534 | /* |
535 | * max number of bytes to hold this extent in ram | |
536 | * when we split a compressed extent we can't know how big | |
537 | * each of the resulting pieces will be. So, this is | |
538 | * an upper limit on the size of the extent in ram instead of | |
539 | * an exact limit. | |
540 | */ | |
541 | __le64 ram_bytes; | |
542 | ||
543 | /* | |
544 | * 32 bits for the various ways we might encode the data, | |
545 | * including compression and encryption. If any of these | |
546 | * are set to something a given disk format doesn't understand | |
547 | * it is treated like an incompat flag for reading and writing, | |
548 | * but not for stat. | |
549 | */ | |
550 | u8 compression; | |
551 | u8 encryption; | |
552 | __le16 other_encoding; /* spare for later use */ | |
553 | ||
554 | /* are we inline data or a real extent? */ | |
236454df | 555 | u8 type; |
c8b97818 | 556 | |
9f5fae2f CM |
557 | /* |
558 | * disk space consumed by the extent, checksum blocks are included | |
559 | * in these numbers | |
560 | */ | |
db94535d CM |
561 | __le64 disk_bytenr; |
562 | __le64 disk_num_bytes; | |
9f5fae2f | 563 | /* |
dee26a9f | 564 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
565 | * this extent record is for. This allows a file extent to point |
566 | * into the middle of an existing extent on disk, sharing it | |
567 | * between two snapshots (useful if some bytes in the middle of the | |
568 | * extent have changed | |
569 | */ | |
570 | __le64 offset; | |
571 | /* | |
c8b97818 CM |
572 | * the logical number of file blocks (no csums included). This |
573 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 574 | */ |
db94535d | 575 | __le64 num_bytes; |
c8b97818 | 576 | |
9f5fae2f CM |
577 | } __attribute__ ((__packed__)); |
578 | ||
f254e52c | 579 | struct btrfs_csum_item { |
509659cd | 580 | u8 csum; |
f254e52c CM |
581 | } __attribute__ ((__packed__)); |
582 | ||
0b86a832 CM |
583 | /* different types of block groups (and chunks) */ |
584 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
585 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
586 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 587 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 588 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 589 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 590 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
1e2677e0 | 591 | |
9078a3e1 CM |
592 | struct btrfs_block_group_item { |
593 | __le64 used; | |
0b86a832 CM |
594 | __le64 chunk_objectid; |
595 | __le64 flags; | |
9078a3e1 CM |
596 | } __attribute__ ((__packed__)); |
597 | ||
6324fbf3 CM |
598 | struct btrfs_space_info { |
599 | u64 flags; | |
6a63209f JB |
600 | |
601 | u64 total_bytes; /* total bytes in the space */ | |
602 | u64 bytes_used; /* total bytes used on disk */ | |
603 | u64 bytes_pinned; /* total bytes pinned, will be freed when the | |
604 | transaction finishes */ | |
605 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
606 | current allocations */ | |
607 | u64 bytes_readonly; /* total bytes that are read only */ | |
608 | ||
609 | /* delalloc accounting */ | |
610 | u64 bytes_delalloc; /* number of bytes reserved for allocation, | |
611 | this space is not necessarily reserved yet | |
612 | by the allocator */ | |
613 | u64 bytes_may_use; /* number of bytes that may be used for | |
614 | delalloc */ | |
615 | ||
616 | int full; /* indicates that we cannot allocate any more | |
617 | chunks for this space */ | |
618 | int force_alloc; /* set if we need to force a chunk alloc for | |
619 | this space */ | |
620 | ||
6324fbf3 | 621 | struct list_head list; |
0f9dd46c JB |
622 | |
623 | /* for block groups in our same type */ | |
624 | struct list_head block_groups; | |
625 | spinlock_t lock; | |
80eb234a | 626 | struct rw_semaphore groups_sem; |
0f9dd46c JB |
627 | }; |
628 | ||
629 | struct btrfs_free_space { | |
630 | struct rb_node bytes_index; | |
631 | struct rb_node offset_index; | |
632 | u64 offset; | |
633 | u64 bytes; | |
6324fbf3 CM |
634 | }; |
635 | ||
9078a3e1 CM |
636 | struct btrfs_block_group_cache { |
637 | struct btrfs_key key; | |
638 | struct btrfs_block_group_item item; | |
c286ac48 | 639 | spinlock_t lock; |
25179201 | 640 | struct mutex alloc_mutex; |
ea6a478e | 641 | struct mutex cache_mutex; |
324ae4df | 642 | u64 pinned; |
e8569813 | 643 | u64 reserved; |
0b86a832 CM |
644 | u64 flags; |
645 | int cached; | |
8f18cf13 | 646 | int ro; |
0f9dd46c JB |
647 | int dirty; |
648 | ||
649 | struct btrfs_space_info *space_info; | |
650 | ||
651 | /* free space cache stuff */ | |
652 | struct rb_root free_space_bytes; | |
653 | struct rb_root free_space_offset; | |
654 | ||
655 | /* block group cache stuff */ | |
656 | struct rb_node cache_node; | |
657 | ||
658 | /* for block groups in the same raid type */ | |
659 | struct list_head list; | |
d2fb3437 YZ |
660 | |
661 | /* usage count */ | |
662 | atomic_t count; | |
9078a3e1 | 663 | }; |
0b86a832 | 664 | |
e4657689 ZY |
665 | struct btrfs_leaf_ref_tree { |
666 | struct rb_root root; | |
667 | struct list_head list; | |
668 | spinlock_t lock; | |
669 | }; | |
670 | ||
0b86a832 | 671 | struct btrfs_device; |
8a4b83cc | 672 | struct btrfs_fs_devices; |
9f5fae2f | 673 | struct btrfs_fs_info { |
5f39d397 | 674 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 675 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
676 | struct btrfs_root *extent_root; |
677 | struct btrfs_root *tree_root; | |
0b86a832 CM |
678 | struct btrfs_root *chunk_root; |
679 | struct btrfs_root *dev_root; | |
3de4586c | 680 | struct btrfs_root *fs_root; |
d20f7043 | 681 | struct btrfs_root *csum_root; |
e02119d5 CM |
682 | |
683 | /* the log root tree is a directory of all the other log roots */ | |
684 | struct btrfs_root *log_root_tree; | |
0f7d52f4 | 685 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 686 | |
0f9dd46c JB |
687 | /* block group cache stuff */ |
688 | spinlock_t block_group_cache_lock; | |
689 | struct rb_root block_group_cache_tree; | |
690 | ||
d1310b2e | 691 | struct extent_io_tree pinned_extents; |
1a5bc167 | 692 | |
0b86a832 CM |
693 | /* logical->physical extent mapping */ |
694 | struct btrfs_mapping_tree mapping_tree; | |
695 | ||
293ffd5f | 696 | u64 generation; |
15ee9bc7 | 697 | u64 last_trans_committed; |
e02119d5 | 698 | u64 last_trans_new_blockgroup; |
9ca9ee09 | 699 | u64 open_ioctl_trans; |
b6cda9bc | 700 | unsigned long mount_opt; |
c59f8951 | 701 | u64 max_extent; |
6f568d35 | 702 | u64 max_inline; |
8f662a76 | 703 | u64 alloc_start; |
79154b1b | 704 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 705 | wait_queue_head_t transaction_throttle; |
f9295749 | 706 | wait_queue_head_t transaction_wait; |
771ed689 | 707 | wait_queue_head_t async_submit_wait; |
e02119d5 | 708 | |
4b52dff6 | 709 | struct btrfs_super_block super_copy; |
a061fc8d | 710 | struct btrfs_super_block super_for_commit; |
0b86a832 | 711 | struct block_device *__bdev; |
e20d96d6 | 712 | struct super_block *sb; |
d98237b3 | 713 | struct inode *btree_inode; |
04160088 | 714 | struct backing_dev_info bdi; |
79154b1b | 715 | struct mutex trans_mutex; |
e02119d5 | 716 | struct mutex tree_log_mutex; |
a74a4b97 CM |
717 | struct mutex transaction_kthread_mutex; |
718 | struct mutex cleaner_mutex; | |
25179201 | 719 | struct mutex pinned_mutex; |
925baedd | 720 | struct mutex chunk_mutex; |
a2135011 | 721 | struct mutex drop_mutex; |
7d9eb12c | 722 | struct mutex volume_mutex; |
1a40e23b | 723 | struct mutex tree_reloc_mutex; |
c3e69d58 | 724 | |
8fd17795 | 725 | struct list_head trans_list; |
19c00ddc | 726 | struct list_head hashers; |
facda1e7 | 727 | struct list_head dead_roots; |
e02119d5 | 728 | |
cb03c743 | 729 | atomic_t nr_async_submits; |
8c8bee1d | 730 | atomic_t async_submit_draining; |
0986fe9e | 731 | atomic_t nr_async_bios; |
771ed689 | 732 | atomic_t async_delalloc_pages; |
ce9adaa5 | 733 | |
3eaa2885 CM |
734 | /* |
735 | * this is used by the balancing code to wait for all the pending | |
736 | * ordered extents | |
737 | */ | |
738 | spinlock_t ordered_extent_lock; | |
739 | struct list_head ordered_extents; | |
ea8c2819 | 740 | struct list_head delalloc_inodes; |
3eaa2885 | 741 | |
8b712842 CM |
742 | /* |
743 | * there is a pool of worker threads for checksumming during writes | |
744 | * and a pool for checksumming after reads. This is because readers | |
745 | * can run with FS locks held, and the writers may be waiting for | |
746 | * those locks. We don't want ordering in the pending list to cause | |
747 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
748 | * |
749 | * A third pool does submit_bio to avoid deadlocking with the other | |
750 | * two | |
8b712842 CM |
751 | */ |
752 | struct btrfs_workers workers; | |
771ed689 | 753 | struct btrfs_workers delalloc_workers; |
8b712842 | 754 | struct btrfs_workers endio_workers; |
d20f7043 | 755 | struct btrfs_workers endio_meta_workers; |
cad321ad | 756 | struct btrfs_workers endio_meta_write_workers; |
e6dcd2dc | 757 | struct btrfs_workers endio_write_workers; |
1cc127b5 | 758 | struct btrfs_workers submit_workers; |
247e743c CM |
759 | /* |
760 | * fixup workers take dirty pages that didn't properly go through | |
761 | * the cow mechanism and make them safe to write. It happens | |
762 | * for the sys_munmap function call path | |
763 | */ | |
764 | struct btrfs_workers fixup_workers; | |
a74a4b97 CM |
765 | struct task_struct *transaction_kthread; |
766 | struct task_struct *cleaner_kthread; | |
4543df7e | 767 | int thread_pool_size; |
8b712842 | 768 | |
1a40e23b | 769 | /* tree relocation relocated fields */ |
1a40e23b ZY |
770 | struct list_head dead_reloc_roots; |
771 | struct btrfs_leaf_ref_tree reloc_ref_tree; | |
e4657689 ZY |
772 | struct btrfs_leaf_ref_tree shared_ref_tree; |
773 | ||
58176a96 JB |
774 | struct kobject super_kobj; |
775 | struct completion kobj_unregister; | |
e66f709b | 776 | int do_barriers; |
facda1e7 | 777 | int closing; |
e02119d5 | 778 | int log_root_recovering; |
a2135011 | 779 | atomic_t throttles; |
ab78c84d | 780 | atomic_t throttle_gen; |
9f5fae2f | 781 | |
324ae4df | 782 | u64 total_pinned; |
b9473439 CM |
783 | |
784 | /* protected by the delalloc lock, used to keep from writing | |
785 | * metadata until there is a nice batch | |
786 | */ | |
787 | u64 dirty_metadata_bytes; | |
0b86a832 CM |
788 | struct list_head dirty_cowonly_roots; |
789 | ||
8a4b83cc | 790 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
791 | |
792 | /* | |
793 | * the space_info list is almost entirely read only. It only changes | |
794 | * when we add a new raid type to the FS, and that happens | |
795 | * very rarely. RCU is used to protect it. | |
796 | */ | |
6324fbf3 | 797 | struct list_head space_info; |
4184ea7f | 798 | |
1832a6d5 | 799 | spinlock_t delalloc_lock; |
cee36a03 | 800 | spinlock_t new_trans_lock; |
1832a6d5 | 801 | u64 delalloc_bytes; |
e18e4809 | 802 | u64 last_alloc; |
4529ba49 | 803 | u64 last_data_alloc; |
d18a2c44 | 804 | |
31153d81 YZ |
805 | spinlock_t ref_cache_lock; |
806 | u64 total_ref_cache_size; | |
31153d81 | 807 | |
d18a2c44 CM |
808 | u64 avail_data_alloc_bits; |
809 | u64 avail_metadata_alloc_bits; | |
810 | u64 avail_system_alloc_bits; | |
811 | u64 data_alloc_profile; | |
812 | u64 metadata_alloc_profile; | |
813 | u64 system_alloc_profile; | |
788f20eb CM |
814 | |
815 | void *bdev_holder; | |
324ae4df | 816 | }; |
0b86a832 | 817 | |
9f5fae2f CM |
818 | /* |
819 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 820 | * and for the extent tree extent_root root. |
9f5fae2f | 821 | */ |
f321e491 | 822 | struct btrfs_dirty_root; |
9f5fae2f | 823 | struct btrfs_root { |
5f39d397 | 824 | struct extent_buffer *node; |
925baedd CM |
825 | |
826 | /* the node lock is held while changing the node pointer */ | |
827 | spinlock_t node_lock; | |
828 | ||
5f39d397 | 829 | struct extent_buffer *commit_root; |
31153d81 | 830 | struct btrfs_leaf_ref_tree *ref_tree; |
017e5369 | 831 | struct btrfs_leaf_ref_tree ref_tree_struct; |
f321e491 | 832 | struct btrfs_dirty_root *dirty_root; |
e02119d5 | 833 | struct btrfs_root *log_root; |
1a40e23b | 834 | struct btrfs_root *reloc_root; |
31153d81 | 835 | |
62e2749e CM |
836 | struct btrfs_root_item root_item; |
837 | struct btrfs_key root_key; | |
9f5fae2f | 838 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
839 | struct extent_io_tree dirty_log_pages; |
840 | ||
58176a96 JB |
841 | struct kobject root_kobj; |
842 | struct completion kobj_unregister; | |
a2135011 | 843 | struct mutex objectid_mutex; |
7237f183 | 844 | |
e02119d5 | 845 | struct mutex log_mutex; |
7237f183 YZ |
846 | wait_queue_head_t log_writer_wait; |
847 | wait_queue_head_t log_commit_wait[2]; | |
848 | atomic_t log_writers; | |
849 | atomic_t log_commit[2]; | |
850 | unsigned long log_transid; | |
851 | unsigned long log_batch; | |
ea8c2819 | 852 | |
0f7d52f4 CM |
853 | u64 objectid; |
854 | u64 last_trans; | |
5f39d397 CM |
855 | |
856 | /* data allocations are done in sectorsize units */ | |
857 | u32 sectorsize; | |
858 | ||
859 | /* node allocations are done in nodesize units */ | |
860 | u32 nodesize; | |
861 | ||
862 | /* leaf allocations are done in leafsize units */ | |
863 | u32 leafsize; | |
864 | ||
87ee04eb CM |
865 | u32 stripesize; |
866 | ||
9f5fae2f | 867 | u32 type; |
1b05da2e CM |
868 | u64 highest_inode; |
869 | u64 last_inode_alloc; | |
9f3a7427 | 870 | int ref_cows; |
0b86a832 | 871 | int track_dirty; |
3f157a2f | 872 | u64 defrag_trans_start; |
6702ed49 | 873 | struct btrfs_key defrag_progress; |
0ef3e66b | 874 | struct btrfs_key defrag_max; |
6702ed49 CM |
875 | int defrag_running; |
876 | int defrag_level; | |
58176a96 | 877 | char *name; |
4313b399 | 878 | int in_sysfs; |
0b86a832 CM |
879 | |
880 | /* the dirty list is only used by non-reference counted roots */ | |
881 | struct list_head dirty_list; | |
7b128766 | 882 | |
bcc63abb Y |
883 | spinlock_t list_lock; |
884 | struct list_head dead_list; | |
7b128766 | 885 | struct list_head orphan_list; |
3394e160 CM |
886 | |
887 | /* | |
888 | * right now this just gets used so that a root has its own devid | |
889 | * for stat. It may be used for more later | |
890 | */ | |
891 | struct super_block anon_super; | |
62e2749e CM |
892 | }; |
893 | ||
1e1d2701 | 894 | /* |
0b86a832 | 895 | |
1e1d2701 CM |
896 | * inode items have the data typically returned from stat and store other |
897 | * info about object characteristics. There is one for every file and dir in | |
898 | * the FS | |
899 | */ | |
9078a3e1 | 900 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af CM |
901 | #define BTRFS_INODE_REF_KEY 12 |
902 | #define BTRFS_XATTR_ITEM_KEY 24 | |
903 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 904 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
905 | |
906 | /* | |
907 | * dir items are the name -> inode pointers in a directory. There is one | |
908 | * for every name in a directory. | |
909 | */ | |
0660b5af CM |
910 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
911 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
912 | #define BTRFS_DIR_ITEM_KEY 84 | |
913 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 914 | /* |
9078a3e1 | 915 | * extent data is for file data |
1e1d2701 | 916 | */ |
0660b5af | 917 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 918 | |
f254e52c | 919 | /* |
d20f7043 CM |
920 | * extent csums are stored in a separate tree and hold csums for |
921 | * an entire extent on disk. | |
f254e52c | 922 | */ |
d20f7043 | 923 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 924 | |
1e1d2701 CM |
925 | /* |
926 | * root items point to tree roots. There are typically in the root | |
927 | * tree used by the super block to find all the other trees | |
928 | */ | |
0660b5af CM |
929 | #define BTRFS_ROOT_ITEM_KEY 132 |
930 | ||
931 | /* | |
932 | * root backrefs tie subvols and snapshots to the directory entries that | |
933 | * reference them | |
934 | */ | |
935 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
936 | ||
937 | /* | |
938 | * root refs make a fast index for listing all of the snapshots and | |
939 | * subvolumes referenced by a given root. They point directly to the | |
940 | * directory item in the root that references the subvol | |
941 | */ | |
942 | #define BTRFS_ROOT_REF_KEY 156 | |
943 | ||
1e1d2701 CM |
944 | /* |
945 | * extent items are in the extent map tree. These record which blocks | |
946 | * are used, and how many references there are to each block | |
947 | */ | |
0660b5af CM |
948 | #define BTRFS_EXTENT_ITEM_KEY 168 |
949 | #define BTRFS_EXTENT_REF_KEY 180 | |
9078a3e1 CM |
950 | |
951 | /* | |
952 | * block groups give us hints into the extent allocation trees. Which | |
953 | * blocks are free etc etc | |
954 | */ | |
0660b5af | 955 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 956 | |
0660b5af CM |
957 | #define BTRFS_DEV_EXTENT_KEY 204 |
958 | #define BTRFS_DEV_ITEM_KEY 216 | |
959 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 960 | |
1e1d2701 CM |
961 | /* |
962 | * string items are for debugging. They just store a short string of | |
963 | * data in the FS | |
964 | */ | |
9078a3e1 CM |
965 | #define BTRFS_STRING_ITEM_KEY 253 |
966 | ||
21ad10cf CM |
967 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
968 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
969 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 970 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 971 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 972 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
b6cda9bc CM |
973 | |
974 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
975 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
976 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
977 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
978 | /* |
979 | * Inode flags | |
980 | */ | |
fdebe2bd Y |
981 | #define BTRFS_INODE_NODATASUM (1 << 0) |
982 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
983 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 984 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 985 | #define BTRFS_INODE_PREALLOC (1 << 4) |
b98b6767 Y |
986 | #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \ |
987 | ~BTRFS_INODE_##flag) | |
988 | #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \ | |
989 | BTRFS_INODE_##flag) | |
990 | #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \ | |
991 | BTRFS_INODE_##flag) | |
5f39d397 CM |
992 | /* some macros to generate set/get funcs for the struct fields. This |
993 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
994 | * one for u8: | |
995 | */ | |
996 | #define le8_to_cpu(v) (v) | |
997 | #define cpu_to_le8(v) (v) | |
998 | #define __le8 u8 | |
999 | ||
1000 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
1001 | read_extent_buffer(eb, (char *)(result), \ | |
1002 | ((unsigned long)(ptr)) + \ | |
1003 | offsetof(type, member), \ | |
1004 | sizeof(((type *)0)->member))) | |
1005 | ||
1006 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1007 | write_extent_buffer(eb, (char *)(result), \ | |
1008 | ((unsigned long)(ptr)) + \ | |
1009 | offsetof(type, member), \ | |
1010 | sizeof(((type *)0)->member))) | |
1011 | ||
0f82731f | 1012 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 1013 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
1014 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
1015 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
1016 | #endif | |
5f39d397 CM |
1017 | |
1018 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1019 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1020 | { \ | |
df68b8a7 DM |
1021 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1022 | u##bits res = le##bits##_to_cpu(p->member); \ | |
1023 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 1024 | return res; \ |
5f39d397 CM |
1025 | } \ |
1026 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1027 | u##bits val) \ | |
1028 | { \ | |
df68b8a7 DM |
1029 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1030 | p->member = cpu_to_le##bits(val); \ | |
1031 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 1032 | } |
9078a3e1 | 1033 | |
5f39d397 CM |
1034 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1035 | static inline u##bits btrfs_##name(type *s) \ | |
1036 | { \ | |
1037 | return le##bits##_to_cpu(s->member); \ | |
1038 | } \ | |
1039 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1040 | { \ | |
1041 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1042 | } |
1043 | ||
0b86a832 CM |
1044 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1045 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1046 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1047 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1048 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1049 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1050 | start_offset, 64); | |
0b86a832 CM |
1051 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1052 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1053 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1054 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1055 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1056 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1057 | |
8a4b83cc CM |
1058 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1059 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1060 | total_bytes, 64); | |
1061 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1062 | bytes_used, 64); | |
1063 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1064 | io_align, 32); | |
1065 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1066 | io_width, 32); | |
1067 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1068 | sector_size, 32); | |
1069 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1070 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1071 | dev_group, 32); | |
1072 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1073 | seek_speed, 8); | |
1074 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1075 | bandwidth, 8); | |
2b82032c YZ |
1076 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1077 | generation, 64); | |
8a4b83cc | 1078 | |
0b86a832 CM |
1079 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
1080 | { | |
1081 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
1082 | } | |
1083 | ||
2b82032c YZ |
1084 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
1085 | { | |
1086 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
1087 | } | |
1088 | ||
e17cade2 | 1089 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1090 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1091 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1092 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1093 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1094 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1095 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1096 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1097 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1098 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1099 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1100 | ||
e17cade2 CM |
1101 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1102 | { | |
1103 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1104 | } | |
1105 | ||
1106 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1107 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1108 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1109 | stripe_len, 64); | |
1110 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1111 | io_align, 32); | |
1112 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1113 | io_width, 32); | |
1114 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1115 | sector_size, 32); | |
1116 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1117 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1118 | num_stripes, 16); | |
321aecc6 CM |
1119 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1120 | sub_stripes, 16); | |
0b86a832 CM |
1121 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1122 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1123 | ||
1124 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1125 | int nr) | |
1126 | { | |
1127 | unsigned long offset = (unsigned long)c; | |
1128 | offset += offsetof(struct btrfs_chunk, stripe); | |
1129 | offset += nr * sizeof(struct btrfs_stripe); | |
1130 | return (struct btrfs_stripe *)offset; | |
1131 | } | |
1132 | ||
a443755f CM |
1133 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1134 | { | |
1135 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1136 | } | |
1137 | ||
0b86a832 CM |
1138 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1139 | struct btrfs_chunk *c, int nr) | |
1140 | { | |
1141 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1142 | } | |
1143 | ||
1144 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, | |
1145 | struct btrfs_chunk *c, int nr, | |
1146 | u64 val) | |
1147 | { | |
1148 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
1149 | } | |
1150 | ||
1151 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, | |
1152 | struct btrfs_chunk *c, int nr) | |
1153 | { | |
1154 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1155 | } | |
1156 | ||
1157 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, | |
1158 | struct btrfs_chunk *c, int nr, | |
1159 | u64 val) | |
1160 | { | |
1161 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
1162 | } | |
1163 | ||
5f39d397 CM |
1164 | /* struct btrfs_block_group_item */ |
1165 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1166 | used, 64); | |
1167 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1168 | used, 64); | |
0b86a832 CM |
1169 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1170 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1171 | |
1172 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1173 | struct btrfs_block_group_item, chunk_objectid, 64); |
1174 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1175 | struct btrfs_block_group_item, flags, 64); | |
1176 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1177 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1178 | |
3954401f CM |
1179 | /* struct btrfs_inode_ref */ |
1180 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1181 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1182 | |
5f39d397 CM |
1183 | /* struct btrfs_inode_item */ |
1184 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1185 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1186 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1187 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1188 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1189 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1190 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1191 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1192 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1193 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1194 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1195 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
1e1d2701 | 1196 | |
0b86a832 | 1197 | static inline struct btrfs_timespec * |
5f39d397 | 1198 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1199 | { |
5f39d397 CM |
1200 | unsigned long ptr = (unsigned long)inode_item; |
1201 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1202 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1203 | } |
1204 | ||
0b86a832 | 1205 | static inline struct btrfs_timespec * |
5f39d397 | 1206 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1207 | { |
5f39d397 CM |
1208 | unsigned long ptr = (unsigned long)inode_item; |
1209 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1210 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1211 | } |
1212 | ||
0b86a832 | 1213 | static inline struct btrfs_timespec * |
5f39d397 | 1214 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1215 | { |
5f39d397 CM |
1216 | unsigned long ptr = (unsigned long)inode_item; |
1217 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1218 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1219 | } |
1220 | ||
0b86a832 | 1221 | static inline struct btrfs_timespec * |
5f39d397 | 1222 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1223 | { |
5f39d397 CM |
1224 | unsigned long ptr = (unsigned long)inode_item; |
1225 | ptr += offsetof(struct btrfs_inode_item, otime); | |
0b86a832 | 1226 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1227 | } |
1228 | ||
0b86a832 CM |
1229 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1230 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1231 | |
0b86a832 | 1232 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1233 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1234 | chunk_tree, 64); | |
1235 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1236 | chunk_objectid, 64); | |
1237 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1238 | chunk_offset, 64); | |
0b86a832 CM |
1239 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1240 | ||
e17cade2 CM |
1241 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1242 | { | |
1243 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1244 | return (u8 *)((unsigned long)dev + ptr); | |
1245 | } | |
1246 | ||
74493f7a CM |
1247 | /* struct btrfs_extent_ref */ |
1248 | BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64); | |
1249 | BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64); | |
1250 | BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64); | |
31840ae1 | 1251 | BTRFS_SETGET_FUNCS(ref_num_refs, struct btrfs_extent_ref, num_refs, 32); |
74493f7a | 1252 | |
7bb86316 CM |
1253 | BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64); |
1254 | BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref, | |
74493f7a | 1255 | generation, 64); |
7bb86316 CM |
1256 | BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref, |
1257 | objectid, 64); | |
31840ae1 ZY |
1258 | BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs, struct btrfs_extent_ref, |
1259 | num_refs, 32); | |
e20d96d6 | 1260 | |
31840ae1 ZY |
1261 | /* struct btrfs_extent_item */ |
1262 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32); | |
5f39d397 CM |
1263 | BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, |
1264 | refs, 32); | |
e20d96d6 | 1265 | |
5f39d397 CM |
1266 | /* struct btrfs_node */ |
1267 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1268 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1269 | |
5f39d397 | 1270 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1271 | { |
5f39d397 CM |
1272 | unsigned long ptr; |
1273 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1274 | sizeof(struct btrfs_key_ptr) * nr; | |
1275 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1276 | } |
1277 | ||
5f39d397 CM |
1278 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1279 | int nr, u64 val) | |
cf27e1ee | 1280 | { |
5f39d397 CM |
1281 | unsigned long ptr; |
1282 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1283 | sizeof(struct btrfs_key_ptr) * nr; | |
1284 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1285 | } |
1286 | ||
74493f7a CM |
1287 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1288 | { | |
1289 | unsigned long ptr; | |
1290 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1291 | sizeof(struct btrfs_key_ptr) * nr; | |
1292 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1293 | } | |
1294 | ||
1295 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1296 | int nr, u64 val) | |
1297 | { | |
1298 | unsigned long ptr; | |
1299 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1300 | sizeof(struct btrfs_key_ptr) * nr; | |
1301 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1302 | } | |
1303 | ||
810191ff | 1304 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1305 | { |
5f39d397 CM |
1306 | return offsetof(struct btrfs_node, ptrs) + |
1307 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1308 | } |
1309 | ||
e644d021 CM |
1310 | void btrfs_node_key(struct extent_buffer *eb, |
1311 | struct btrfs_disk_key *disk_key, int nr); | |
1312 | ||
5f39d397 CM |
1313 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1314 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1315 | { |
5f39d397 CM |
1316 | unsigned long ptr; |
1317 | ptr = btrfs_node_key_ptr_offset(nr); | |
1318 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1319 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1320 | } |
1321 | ||
5f39d397 CM |
1322 | /* struct btrfs_item */ |
1323 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1324 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1325 | |
5f39d397 | 1326 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1327 | { |
5f39d397 CM |
1328 | return offsetof(struct btrfs_leaf, items) + |
1329 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1330 | } |
1331 | ||
5f39d397 CM |
1332 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1333 | int nr) | |
0783fcfc | 1334 | { |
5f39d397 | 1335 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1336 | } |
1337 | ||
5f39d397 CM |
1338 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1339 | struct btrfs_item *item) | |
0783fcfc | 1340 | { |
5f39d397 | 1341 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1342 | } |
1343 | ||
5f39d397 | 1344 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1345 | { |
5f39d397 | 1346 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1347 | } |
1348 | ||
5f39d397 | 1349 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1350 | { |
5f39d397 | 1351 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1352 | } |
1353 | ||
5f39d397 | 1354 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1355 | { |
5f39d397 | 1356 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1357 | } |
1358 | ||
5f39d397 CM |
1359 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1360 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1361 | { |
5f39d397 CM |
1362 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1363 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1364 | } |
1365 | ||
5f39d397 CM |
1366 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1367 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1368 | { |
5f39d397 CM |
1369 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1370 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1371 | } |
1372 | ||
e02119d5 CM |
1373 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1374 | ||
0660b5af CM |
1375 | /* |
1376 | * struct btrfs_root_ref | |
1377 | */ | |
1378 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1379 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1380 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1381 | ||
5f39d397 | 1382 | /* struct btrfs_dir_item */ |
5103e947 | 1383 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1384 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1385 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1386 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1387 | |
5f39d397 CM |
1388 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1389 | struct btrfs_dir_item *item, | |
1390 | struct btrfs_disk_key *key) | |
1d4f6404 | 1391 | { |
5f39d397 | 1392 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1393 | } |
1394 | ||
5f39d397 CM |
1395 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1396 | struct btrfs_dir_item *item, | |
1397 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1398 | { |
5f39d397 | 1399 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1400 | } |
1401 | ||
5f39d397 CM |
1402 | /* struct btrfs_disk_key */ |
1403 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1404 | objectid, 64); | |
1405 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1406 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1407 | |
e2fa7227 CM |
1408 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1409 | struct btrfs_disk_key *disk) | |
1410 | { | |
1411 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1412 | cpu->type = disk->type; |
e2fa7227 CM |
1413 | cpu->objectid = le64_to_cpu(disk->objectid); |
1414 | } | |
1415 | ||
1416 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1417 | struct btrfs_key *cpu) | |
1418 | { | |
1419 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1420 | disk->type = cpu->type; |
e2fa7227 CM |
1421 | disk->objectid = cpu_to_le64(cpu->objectid); |
1422 | } | |
1423 | ||
5f39d397 CM |
1424 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1425 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1426 | { |
5f39d397 CM |
1427 | struct btrfs_disk_key disk_key; |
1428 | btrfs_node_key(eb, &disk_key, nr); | |
1429 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1430 | } |
1431 | ||
5f39d397 CM |
1432 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1433 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1434 | { |
5f39d397 CM |
1435 | struct btrfs_disk_key disk_key; |
1436 | btrfs_item_key(eb, &disk_key, nr); | |
1437 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1438 | } |
1439 | ||
5f39d397 CM |
1440 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1441 | struct btrfs_dir_item *item, | |
1442 | struct btrfs_key *key) | |
4d775673 | 1443 | { |
5f39d397 CM |
1444 | struct btrfs_disk_key disk_key; |
1445 | btrfs_dir_item_key(eb, item, &disk_key); | |
1446 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1447 | } |
1448 | ||
58176a96 | 1449 | |
5f39d397 | 1450 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1451 | { |
5f39d397 | 1452 | return key->type; |
3768f368 CM |
1453 | } |
1454 | ||
5f39d397 | 1455 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1456 | { |
5f39d397 | 1457 | key->type = val; |
3768f368 CM |
1458 | } |
1459 | ||
5f39d397 | 1460 | /* struct btrfs_header */ |
db94535d | 1461 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1462 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1463 | generation, 64); | |
1464 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1465 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1466 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1467 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1468 | |
63b10fc4 CM |
1469 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1470 | { | |
1471 | return (btrfs_header_flags(eb) & flag) == flag; | |
1472 | } | |
1473 | ||
1474 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1475 | { | |
1476 | u64 flags = btrfs_header_flags(eb); | |
1477 | btrfs_set_header_flags(eb, flags | flag); | |
1478 | return (flags & flag) == flag; | |
1479 | } | |
1480 | ||
1481 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1482 | { | |
1483 | u64 flags = btrfs_header_flags(eb); | |
1484 | btrfs_set_header_flags(eb, flags & ~flag); | |
1485 | return (flags & flag) == flag; | |
1486 | } | |
1487 | ||
5f39d397 | 1488 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1489 | { |
5f39d397 CM |
1490 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1491 | return (u8 *)ptr; | |
0f7d52f4 CM |
1492 | } |
1493 | ||
e17cade2 CM |
1494 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1495 | { | |
1496 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1497 | return (u8 *)ptr; | |
1498 | } | |
1499 | ||
5f39d397 | 1500 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 1501 | { |
5f39d397 CM |
1502 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
1503 | return (u8 *)ptr; | |
3768f368 CM |
1504 | } |
1505 | ||
5f39d397 | 1506 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 1507 | { |
5f39d397 CM |
1508 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
1509 | return (u8 *)ptr; | |
3768f368 CM |
1510 | } |
1511 | ||
5f39d397 | 1512 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 1513 | { |
5f39d397 | 1514 | return NULL; |
3768f368 CM |
1515 | } |
1516 | ||
5f39d397 | 1517 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 1518 | { |
5f39d397 | 1519 | return NULL; |
3768f368 CM |
1520 | } |
1521 | ||
5f39d397 | 1522 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 1523 | { |
5f39d397 | 1524 | return NULL; |
3768f368 CM |
1525 | } |
1526 | ||
5f39d397 | 1527 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1528 | { |
d397712b | 1529 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
1530 | } |
1531 | ||
5f39d397 | 1532 | /* struct btrfs_root_item */ |
84234f3a YZ |
1533 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
1534 | generation, 64); | |
5f39d397 | 1535 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
1536 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1537 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1538 | |
84234f3a YZ |
1539 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
1540 | generation, 64); | |
db94535d CM |
1541 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1542 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1543 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1544 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 1545 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
1546 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1547 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
1548 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
1549 | last_snapshot, 64); | |
123abc88 | 1550 | |
5f39d397 | 1551 | /* struct btrfs_super_block */ |
607d432d | 1552 | |
db94535d | 1553 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1554 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1555 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1556 | generation, 64); | |
1557 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1558 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1559 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
1560 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
1561 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
1562 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1563 | root_level, 8); | |
0b86a832 CM |
1564 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1565 | chunk_root, 64); | |
1566 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
1567 | chunk_root_level, 8); |
1568 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
1569 | log_root, 64); | |
c3027eb5 CM |
1570 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
1571 | log_root_transid, 64); | |
e02119d5 CM |
1572 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
1573 | log_root_level, 8); | |
db94535d CM |
1574 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1575 | total_bytes, 64); | |
1576 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1577 | bytes_used, 64); | |
5f39d397 CM |
1578 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1579 | sectorsize, 32); | |
1580 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1581 | nodesize, 32); | |
1582 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1583 | leafsize, 32); | |
87ee04eb CM |
1584 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1585 | stripesize, 32); | |
5f39d397 CM |
1586 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1587 | root_dir_objectid, 64); | |
8a4b83cc CM |
1588 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1589 | num_devices, 64); | |
f2b636e8 JB |
1590 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
1591 | compat_flags, 64); | |
1592 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
1593 | compat_flags, 64); | |
1594 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, | |
1595 | incompat_flags, 64); | |
607d432d JB |
1596 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
1597 | csum_type, 16); | |
1598 | ||
1599 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
1600 | { | |
1601 | int t = btrfs_super_csum_type(s); | |
1602 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); | |
1603 | return btrfs_csum_sizes[t]; | |
1604 | } | |
2e635a27 | 1605 | |
5f39d397 | 1606 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 1607 | { |
5f39d397 | 1608 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
1609 | } |
1610 | ||
5f39d397 CM |
1611 | /* struct btrfs_file_extent_item */ |
1612 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 1613 | |
d397712b CM |
1614 | static inline unsigned long |
1615 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 1616 | { |
5f39d397 | 1617 | unsigned long offset = (unsigned long)e; |
db94535d | 1618 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1619 | return offset; |
236454df CM |
1620 | } |
1621 | ||
1622 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
1623 | { | |
db94535d | 1624 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
1625 | } |
1626 | ||
db94535d CM |
1627 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
1628 | disk_bytenr, 64); | |
5f39d397 CM |
1629 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
1630 | generation, 64); | |
db94535d CM |
1631 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
1632 | disk_num_bytes, 64); | |
5f39d397 CM |
1633 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
1634 | offset, 64); | |
db94535d CM |
1635 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
1636 | num_bytes, 64); | |
c8b97818 CM |
1637 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
1638 | ram_bytes, 64); | |
1639 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
1640 | compression, 8); | |
1641 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
1642 | encryption, 8); | |
1643 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
1644 | other_encoding, 16); | |
1645 | ||
1646 | /* this returns the number of file bytes represented by the inline item. | |
1647 | * If an item is compressed, this is the uncompressed size | |
1648 | */ | |
1649 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
1650 | struct btrfs_file_extent_item *e) | |
1651 | { | |
1652 | return btrfs_file_extent_ram_bytes(eb, e); | |
1653 | } | |
1654 | ||
1655 | /* | |
1656 | * this returns the number of bytes used by the item on disk, minus the | |
1657 | * size of any extent headers. If a file is compressed on disk, this is | |
1658 | * the compressed size | |
1659 | */ | |
1660 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
1661 | struct btrfs_item *e) | |
1662 | { | |
1663 | unsigned long offset; | |
1664 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
1665 | return btrfs_item_size(eb, e) - offset; | |
1666 | } | |
9f5fae2f | 1667 | |
e20d96d6 CM |
1668 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1669 | { | |
1670 | return sb->s_fs_info; | |
1671 | } | |
1672 | ||
58176a96 JB |
1673 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
1674 | const char *name, int len) | |
1675 | { | |
1676 | /* if we already have a name just free it */ | |
d397712b | 1677 | kfree(root->name); |
58176a96 JB |
1678 | |
1679 | root->name = kmalloc(len+1, GFP_KERNEL); | |
1680 | if (!root->name) | |
1681 | return -ENOMEM; | |
1682 | ||
1683 | memcpy(root->name, name, len); | |
d397712b | 1684 | root->name[len] = '\0'; |
58176a96 JB |
1685 | |
1686 | return 0; | |
1687 | } | |
1688 | ||
d397712b CM |
1689 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
1690 | { | |
db94535d CM |
1691 | if (level == 0) |
1692 | return root->leafsize; | |
1693 | return root->nodesize; | |
1694 | } | |
1695 | ||
4beb1b8b CM |
1696 | /* helper function to cast into the data area of the leaf. */ |
1697 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 1698 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
1699 | btrfs_item_offset_nr(leaf, slot))) |
1700 | ||
1701 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
1702 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
1703 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 1704 | |
2b1f55b0 CM |
1705 | static inline struct dentry *fdentry(struct file *file) |
1706 | { | |
6da6abae | 1707 | return file->f_path.dentry; |
6da6abae CM |
1708 | } |
1709 | ||
b18c6685 | 1710 | /* extent-tree.c */ |
56bec294 CM |
1711 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
1712 | struct btrfs_root *root, unsigned long count); | |
31840ae1 | 1713 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
e02119d5 CM |
1714 | int btrfs_update_pinned_extents(struct btrfs_root *root, |
1715 | u64 bytenr, u64 num, int pin); | |
1716 | int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans, | |
1717 | struct btrfs_root *root, struct extent_buffer *leaf); | |
80ff3856 | 1718 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
17d217fe | 1719 | struct btrfs_root *root, u64 objectid, u64 bytenr); |
d1310b2e | 1720 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); |
d397712b CM |
1721 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
1722 | struct btrfs_fs_info *info, | |
1723 | u64 bytenr); | |
d2fb3437 YZ |
1724 | u64 btrfs_find_block_group(struct btrfs_root *root, |
1725 | u64 search_start, u64 search_hint, int owner); | |
5f39d397 | 1726 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
7bb86316 | 1727 | struct btrfs_root *root, |
31840ae1 | 1728 | u32 blocksize, u64 parent, |
7bb86316 CM |
1729 | u64 root_objectid, |
1730 | u64 ref_generation, | |
7bb86316 CM |
1731 | int level, |
1732 | u64 hint, | |
1733 | u64 empty_size); | |
65b51a00 CM |
1734 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
1735 | struct btrfs_root *root, | |
4008c04a CM |
1736 | u64 bytenr, u32 blocksize, |
1737 | int level); | |
4d775673 | 1738 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
7bb86316 | 1739 | struct btrfs_root *root, |
31840ae1 | 1740 | u64 num_bytes, u64 parent, u64 min_bytes, |
98d20f67 | 1741 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1742 | u64 owner, u64 empty_size, u64 hint_byte, |
ec44a35c | 1743 | u64 search_end, struct btrfs_key *ins, u64 data); |
e6dcd2dc | 1744 | int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1745 | struct btrfs_root *root, u64 parent, |
e6dcd2dc | 1746 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1747 | u64 owner, struct btrfs_key *ins); |
e02119d5 | 1748 | int btrfs_alloc_logged_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1749 | struct btrfs_root *root, u64 parent, |
e02119d5 | 1750 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1751 | u64 owner, struct btrfs_key *ins); |
e6dcd2dc CM |
1752 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
1753 | struct btrfs_root *root, | |
1754 | u64 num_bytes, u64 min_alloc_size, | |
1755 | u64 empty_size, u64 hint_byte, | |
1756 | u64 search_end, struct btrfs_key *ins, | |
1757 | u64 data); | |
e089f05c | 1758 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
31840ae1 ZY |
1759 | struct extent_buffer *orig_buf, struct extent_buffer *buf, |
1760 | u32 *nr_extents); | |
1761 | int btrfs_cache_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
1762 | struct extent_buffer *buf, u32 nr_extents); | |
1763 | int btrfs_update_ref(struct btrfs_trans_handle *trans, | |
1764 | struct btrfs_root *root, struct extent_buffer *orig_buf, | |
1765 | struct extent_buffer *buf, int start_slot, int nr); | |
1766 | int btrfs_free_extent(struct btrfs_trans_handle *trans, | |
1767 | struct btrfs_root *root, | |
1768 | u64 bytenr, u64 num_bytes, u64 parent, | |
7bb86316 | 1769 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1770 | u64 owner_objectid, int pin); |
65b51a00 | 1771 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
ccd467d6 CM |
1772 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
1773 | struct btrfs_root *root, | |
d1310b2e | 1774 | struct extent_io_tree *unpin); |
b18c6685 | 1775 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
1776 | struct btrfs_root *root, |
1777 | u64 bytenr, u64 num_bytes, u64 parent, | |
1778 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1779 | u64 owner_objectid); |
31840ae1 | 1780 | int btrfs_update_extent_ref(struct btrfs_trans_handle *trans, |
56bec294 | 1781 | struct btrfs_root *root, u64 bytenr, u64 num_bytes, |
31840ae1 ZY |
1782 | u64 orig_parent, u64 parent, |
1783 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1784 | u64 owner_objectid); |
9078a3e1 CM |
1785 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1786 | struct btrfs_root *root); | |
d2fb3437 | 1787 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
1788 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
1789 | int btrfs_read_block_groups(struct btrfs_root *root); | |
0b86a832 CM |
1790 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
1791 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 1792 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 1793 | u64 size); |
1a40e23b ZY |
1794 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
1795 | struct btrfs_root *root, u64 group_start); | |
1796 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
f82d02d9 YZ |
1797 | int btrfs_free_reloc_root(struct btrfs_trans_handle *trans, |
1798 | struct btrfs_root *root); | |
1a40e23b | 1799 | int btrfs_drop_dead_reloc_roots(struct btrfs_root *root); |
1a40e23b ZY |
1800 | int btrfs_reloc_tree_cache_ref(struct btrfs_trans_handle *trans, |
1801 | struct btrfs_root *root, | |
1802 | struct extent_buffer *buf, u64 orig_start); | |
1803 | int btrfs_add_dead_reloc_root(struct btrfs_root *root); | |
1804 | int btrfs_cleanup_reloc_trees(struct btrfs_root *root); | |
17d217fe | 1805 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); |
2b82032c | 1806 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
6a63209f | 1807 | void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde); |
4184ea7f CM |
1808 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
1809 | ||
6a63209f JB |
1810 | int btrfs_check_metadata_free_space(struct btrfs_root *root); |
1811 | int btrfs_check_data_free_space(struct btrfs_root *root, struct inode *inode, | |
1812 | u64 bytes); | |
1813 | void btrfs_free_reserved_data_space(struct btrfs_root *root, | |
1814 | struct inode *inode, u64 bytes); | |
1815 | void btrfs_delalloc_reserve_space(struct btrfs_root *root, struct inode *inode, | |
1816 | u64 bytes); | |
1817 | void btrfs_delalloc_free_space(struct btrfs_root *root, struct inode *inode, | |
1818 | u64 bytes); | |
dee26a9f | 1819 | /* ctree.c */ |
0b86a832 CM |
1820 | int btrfs_previous_item(struct btrfs_root *root, |
1821 | struct btrfs_path *path, u64 min_objectid, | |
1822 | int type); | |
1a40e23b ZY |
1823 | int btrfs_merge_path(struct btrfs_trans_handle *trans, |
1824 | struct btrfs_root *root, | |
1825 | struct btrfs_key *node_keys, | |
1826 | u64 *nodes, int lowest_level); | |
31840ae1 ZY |
1827 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
1828 | struct btrfs_root *root, struct btrfs_path *path, | |
1829 | struct btrfs_key *new_key); | |
925baedd CM |
1830 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
1831 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 1832 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
1833 | struct btrfs_key *key, int lowest_level, |
1834 | int cache_only, u64 min_trans); | |
1835 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 1836 | struct btrfs_key *max_key, |
3f157a2f CM |
1837 | struct btrfs_path *path, int cache_only, |
1838 | u64 min_trans); | |
5f39d397 CM |
1839 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
1840 | struct btrfs_root *root, struct extent_buffer *buf, | |
1841 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 1842 | struct extent_buffer **cow_ret); |
be20aa9d CM |
1843 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
1844 | struct btrfs_root *root, | |
1845 | struct extent_buffer *buf, | |
1846 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
6567e837 CM |
1847 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1848 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1849 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1850 | struct btrfs_root *root, | |
1851 | struct btrfs_path *path, | |
179e29e4 | 1852 | u32 new_size, int from_end); |
459931ec CM |
1853 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
1854 | struct btrfs_root *root, | |
1855 | struct btrfs_path *path, | |
1856 | struct btrfs_key *new_key, | |
1857 | unsigned long split_offset); | |
e089f05c CM |
1858 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1859 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1860 | ins_len, int cow); | |
6702ed49 | 1861 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 1862 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
1863 | int start_slot, int cache_only, u64 *last_ret, |
1864 | struct btrfs_key *progress); | |
234b63a0 | 1865 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1866 | struct btrfs_path *btrfs_alloc_path(void); |
1867 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 1868 | void btrfs_set_path_blocking(struct btrfs_path *p); |
b4ce94de CM |
1869 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
1870 | ||
85e21bac CM |
1871 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1872 | struct btrfs_path *path, int slot, int nr); | |
323ac95b CM |
1873 | int btrfs_del_leaf(struct btrfs_trans_handle *trans, |
1874 | struct btrfs_root *root, | |
1875 | struct btrfs_path *path, u64 bytenr); | |
85e21bac CM |
1876 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
1877 | struct btrfs_root *root, | |
1878 | struct btrfs_path *path) | |
1879 | { | |
1880 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
1881 | } | |
1882 | ||
e089f05c CM |
1883 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1884 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
f3465ca4 JB |
1885 | int btrfs_insert_some_items(struct btrfs_trans_handle *trans, |
1886 | struct btrfs_root *root, | |
1887 | struct btrfs_path *path, | |
1888 | struct btrfs_key *cpu_key, u32 *data_size, | |
1889 | int nr); | |
9c58309d CM |
1890 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
1891 | struct btrfs_root *root, | |
1892 | struct btrfs_path *path, | |
1893 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
1894 | ||
1895 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
1896 | struct btrfs_root *root, | |
1897 | struct btrfs_path *path, | |
1898 | struct btrfs_key *key, | |
1899 | u32 data_size) | |
1900 | { | |
1901 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
1902 | } | |
1903 | ||
234b63a0 | 1904 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 1905 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 1906 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
e089f05c | 1907 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
9f3a7427 | 1908 | *root); |
f82d02d9 YZ |
1909 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
1910 | struct btrfs_root *root, | |
1911 | struct extent_buffer *node, | |
1912 | struct extent_buffer *parent); | |
dee26a9f | 1913 | /* root-item.c */ |
ea9e8b11 CM |
1914 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
1915 | struct btrfs_path *path, | |
1916 | u64 root_id, u64 ref_id); | |
0660b5af CM |
1917 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
1918 | struct btrfs_root *tree_root, | |
1919 | u64 root_id, u8 type, u64 ref_id, | |
1920 | u64 dirid, u64 sequence, | |
1921 | const char *name, int name_len); | |
e089f05c CM |
1922 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1923 | struct btrfs_key *key); | |
1924 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1925 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1926 | *item); | |
1927 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1928 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1929 | *item); | |
1930 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1931 | btrfs_root_item *item, struct btrfs_key *key); | |
bf4ef679 CM |
1932 | int btrfs_search_root(struct btrfs_root *root, u64 search_start, |
1933 | u64 *found_objectid); | |
5ce14bbc CM |
1934 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, |
1935 | struct btrfs_root *latest_root); | |
dee26a9f | 1936 | /* dir-item.c */ |
d397712b CM |
1937 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
1938 | struct btrfs_root *root, const char *name, | |
1939 | int name_len, u64 dir, | |
aec7477b | 1940 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
1941 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1942 | struct btrfs_root *root, | |
1943 | struct btrfs_path *path, u64 dir, | |
1944 | const char *name, int name_len, | |
1945 | int mod); | |
1946 | struct btrfs_dir_item * | |
1947 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1948 | struct btrfs_root *root, | |
1949 | struct btrfs_path *path, u64 dir, | |
1950 | u64 objectid, const char *name, int name_len, | |
1951 | int mod); | |
1952 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1953 | struct btrfs_path *path, | |
7f5c1516 | 1954 | const char *name, int name_len); |
7e38180e CM |
1955 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1956 | struct btrfs_root *root, | |
1957 | struct btrfs_path *path, | |
1958 | struct btrfs_dir_item *di); | |
5103e947 JB |
1959 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
1960 | struct btrfs_root *root, const char *name, | |
1961 | u16 name_len, const void *data, u16 data_len, | |
1962 | u64 dir); | |
1963 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, | |
1964 | struct btrfs_root *root, | |
1965 | struct btrfs_path *path, u64 dir, | |
1966 | const char *name, u16 name_len, | |
1967 | int mod); | |
7b128766 JB |
1968 | |
1969 | /* orphan.c */ | |
1970 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
1971 | struct btrfs_root *root, u64 offset); | |
1972 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
1973 | struct btrfs_root *root, u64 offset); | |
1974 | ||
dee26a9f | 1975 | /* inode-map.c */ |
9f5fae2f CM |
1976 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1977 | struct btrfs_root *fs_root, | |
1978 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1979 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1980 | ||
dee26a9f | 1981 | /* inode-item.c */ |
3954401f CM |
1982 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
1983 | struct btrfs_root *root, | |
1984 | const char *name, int name_len, | |
aec7477b | 1985 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
1986 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
1987 | struct btrfs_root *root, | |
1988 | const char *name, int name_len, | |
aec7477b | 1989 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
1990 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
1991 | struct btrfs_root *root, | |
1992 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 1993 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1994 | *root, struct btrfs_path *path, |
1995 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1996 | |
1997 | /* file-item.c */ | |
459931ec CM |
1998 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
1999 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 2000 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2001 | struct bio *bio, u32 *dst); |
b18c6685 | 2002 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
2003 | struct btrfs_root *root, |
2004 | u64 objectid, u64 pos, | |
2005 | u64 disk_offset, u64 disk_num_bytes, | |
2006 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
2007 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
2008 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
2009 | struct btrfs_root *root, | |
2010 | struct btrfs_path *path, u64 objectid, | |
db94535d | 2011 | u64 bytenr, int mod); |
065631f6 | 2012 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 2013 | struct btrfs_root *root, |
e6dcd2dc | 2014 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 2015 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2016 | struct bio *bio, u64 file_start, int contig); |
c8b97818 CM |
2017 | int btrfs_csum_file_bytes(struct btrfs_root *root, struct inode *inode, |
2018 | u64 start, unsigned long len); | |
b18c6685 CM |
2019 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
2020 | struct btrfs_root *root, | |
2021 | struct btrfs_path *path, | |
d20f7043 | 2022 | u64 bytenr, int cow); |
1de037a4 CM |
2023 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
2024 | struct btrfs_root *root, struct btrfs_path *path, | |
2025 | u64 isize); | |
17d217fe YZ |
2026 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, |
2027 | u64 end, struct list_head *list); | |
39279cc3 | 2028 | /* inode.c */ |
4881ee5a CM |
2029 | |
2030 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 2031 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
2032 | #define ClearPageChecked ClearPageFsMisc |
2033 | #define SetPageChecked SetPageFsMisc | |
2034 | #define PageChecked PageFsMisc | |
2035 | #endif | |
2036 | ||
3de4586c CM |
2037 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
2038 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
2039 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
2040 | struct btrfs_root *root, | |
2041 | struct inode *dir, struct inode *inode, | |
2042 | const char *name, int name_len); | |
2043 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
2044 | struct inode *parent_inode, struct inode *inode, | |
2045 | const char *name, int name_len, int add_backref, u64 index); | |
2046 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, | |
2047 | struct btrfs_root *root, | |
2048 | struct inode *inode, u64 new_size, | |
2049 | u32 min_type); | |
2050 | ||
ea8c2819 CM |
2051 | int btrfs_start_delalloc_inodes(struct btrfs_root *root); |
2052 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end); | |
f421950f CM |
2053 | int btrfs_writepages(struct address_space *mapping, |
2054 | struct writeback_control *wbc); | |
d2fb3437 YZ |
2055 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
2056 | struct btrfs_root *new_root, struct dentry *dentry, | |
2057 | u64 new_dirid, u64 alloc_hint); | |
239b14b3 | 2058 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 2059 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 2060 | |
edbd8d4e CM |
2061 | unsigned long btrfs_force_ra(struct address_space *mapping, |
2062 | struct file_ra_state *ra, struct file *file, | |
2063 | pgoff_t offset, pgoff_t last_index); | |
9ebefb18 CM |
2064 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page); |
2065 | int btrfs_readpage(struct file *file, struct page *page); | |
39279cc3 | 2066 | void btrfs_delete_inode(struct inode *inode); |
2da98f00 | 2067 | void btrfs_put_inode(struct inode *inode); |
39279cc3 CM |
2068 | void btrfs_read_locked_inode(struct inode *inode); |
2069 | int btrfs_write_inode(struct inode *inode, int wait); | |
2070 | void btrfs_dirty_inode(struct inode *inode); | |
2071 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
2072 | void btrfs_destroy_inode(struct inode *inode); | |
2073 | int btrfs_init_cachep(void); | |
2074 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 2075 | long btrfs_ioctl_trans_end(struct file *file); |
5b21f2ed ZY |
2076 | struct inode *btrfs_ilookup(struct super_block *s, u64 objectid, |
2077 | struct btrfs_root *root, int wait); | |
39279cc3 CM |
2078 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, |
2079 | struct btrfs_root *root); | |
1a54ef8c BR |
2080 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
2081 | struct btrfs_root *root, int *is_new); | |
39279cc3 CM |
2082 | int btrfs_commit_write(struct file *file, struct page *page, |
2083 | unsigned from, unsigned to); | |
a52d9a80 CM |
2084 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
2085 | size_t page_offset, u64 start, u64 end, | |
2086 | int create); | |
2087 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
2088 | struct btrfs_root *root, | |
2089 | struct inode *inode); | |
5b21f2ed ZY |
2090 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
2091 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
2092 | void btrfs_orphan_cleanup(struct btrfs_root *root); | |
9036c102 | 2093 | int btrfs_cont_expand(struct inode *inode, loff_t size); |
f46b5a66 CH |
2094 | |
2095 | /* ioctl.c */ | |
2096 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
2097 | ||
39279cc3 | 2098 | /* file.c */ |
e02119d5 | 2099 | int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync); |
5b21f2ed ZY |
2100 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
2101 | int skip_pinned); | |
5f56406a | 2102 | int btrfs_check_file(struct btrfs_root *root, struct inode *inode); |
39279cc3 CM |
2103 | extern struct file_operations btrfs_file_operations; |
2104 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
2105 | struct btrfs_root *root, struct inode *inode, | |
00f5c795 | 2106 | u64 start, u64 end, u64 inline_limit, u64 *hint_block); |
d899e052 YZ |
2107 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
2108 | struct btrfs_root *root, | |
2109 | struct inode *inode, u64 start, u64 end); | |
6bf13c0c SW |
2110 | int btrfs_release_file(struct inode *inode, struct file *file); |
2111 | ||
6702ed49 CM |
2112 | /* tree-defrag.c */ |
2113 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
2114 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
2115 | |
2116 | /* sysfs.c */ | |
2117 | int btrfs_init_sysfs(void); | |
2118 | void btrfs_exit_sysfs(void); | |
2119 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
2120 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
2121 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
2122 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
2123 | ||
5103e947 JB |
2124 | /* xattr.c */ |
2125 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 2126 | |
edbd8d4e CM |
2127 | /* super.c */ |
2128 | u64 btrfs_parse_size(char *str); | |
edf24abe | 2129 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 2130 | int btrfs_sync_fs(struct super_block *sb, int wait); |
33268eaf JB |
2131 | |
2132 | /* acl.c */ | |
2133 | int btrfs_check_acl(struct inode *inode, int mask); | |
2134 | int btrfs_init_acl(struct inode *inode, struct inode *dir); | |
2135 | int btrfs_acl_chmod(struct inode *inode); | |
0f9dd46c JB |
2136 | |
2137 | /* free-space-cache.c */ | |
2138 | int btrfs_add_free_space(struct btrfs_block_group_cache *block_group, | |
2139 | u64 bytenr, u64 size); | |
25179201 JB |
2140 | int btrfs_add_free_space_lock(struct btrfs_block_group_cache *block_group, |
2141 | u64 offset, u64 bytes); | |
0f9dd46c JB |
2142 | int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group, |
2143 | u64 bytenr, u64 size); | |
25179201 JB |
2144 | int btrfs_remove_free_space_lock(struct btrfs_block_group_cache *block_group, |
2145 | u64 offset, u64 bytes); | |
0f9dd46c JB |
2146 | void btrfs_remove_free_space_cache(struct btrfs_block_group_cache |
2147 | *block_group); | |
2148 | struct btrfs_free_space *btrfs_find_free_space(struct btrfs_block_group_cache | |
2149 | *block_group, u64 offset, | |
2150 | u64 bytes); | |
2151 | void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group, | |
2152 | u64 bytes); | |
2153 | u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group); | |
eb60ceac | 2154 | #endif |