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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 CM |
403 | /* keep some upper locks as we walk down */ |
404 | int keep_locks; | |
5cd57b2c | 405 | int skip_locking; |
6702ed49 | 406 | int lowest_level; |
459931ec CM |
407 | |
408 | /* | |
409 | * set by btrfs_split_item, tells search_slot to keep all locks | |
410 | * and to force calls to keep space in the nodes | |
411 | */ | |
412 | int search_for_split; | |
eb60ceac | 413 | }; |
5de08d7d | 414 | |
62e2749e CM |
415 | /* |
416 | * items in the extent btree are used to record the objectid of the | |
417 | * owner of the block and the number of references | |
418 | */ | |
419 | struct btrfs_extent_item { | |
420 | __le32 refs; | |
74493f7a CM |
421 | } __attribute__ ((__packed__)); |
422 | ||
423 | struct btrfs_extent_ref { | |
424 | __le64 root; | |
425 | __le64 generation; | |
426 | __le64 objectid; | |
31840ae1 | 427 | __le32 num_refs; |
62e2749e CM |
428 | } __attribute__ ((__packed__)); |
429 | ||
0b86a832 CM |
430 | /* dev extents record free space on individual devices. The owner |
431 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 432 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
433 | */ |
434 | struct btrfs_dev_extent { | |
e17cade2 CM |
435 | __le64 chunk_tree; |
436 | __le64 chunk_objectid; | |
437 | __le64 chunk_offset; | |
0b86a832 | 438 | __le64 length; |
e17cade2 | 439 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
440 | } __attribute__ ((__packed__)); |
441 | ||
3954401f | 442 | struct btrfs_inode_ref { |
aec7477b | 443 | __le64 index; |
3954401f CM |
444 | __le16 name_len; |
445 | /* name goes here */ | |
446 | } __attribute__ ((__packed__)); | |
447 | ||
0b86a832 | 448 | struct btrfs_timespec { |
f254e52c | 449 | __le64 sec; |
1e1d2701 CM |
450 | __le32 nsec; |
451 | } __attribute__ ((__packed__)); | |
452 | ||
95029d7d | 453 | enum btrfs_compression_type { |
c8b97818 CM |
454 | BTRFS_COMPRESS_NONE = 0, |
455 | BTRFS_COMPRESS_ZLIB = 1, | |
456 | BTRFS_COMPRESS_LAST = 2, | |
95029d7d | 457 | }; |
c8b97818 | 458 | |
1e1d2701 | 459 | struct btrfs_inode_item { |
e02119d5 | 460 | /* nfs style generation number */ |
1e1d2701 | 461 | __le64 generation; |
e02119d5 CM |
462 | /* transid that last touched this inode */ |
463 | __le64 transid; | |
1e1d2701 | 464 | __le64 size; |
a76a3cd4 | 465 | __le64 nbytes; |
31f3c99b | 466 | __le64 block_group; |
1e1d2701 CM |
467 | __le32 nlink; |
468 | __le32 uid; | |
469 | __le32 gid; | |
470 | __le32 mode; | |
0b86a832 | 471 | __le64 rdev; |
f2b636e8 | 472 | __le64 flags; |
c8b97818 | 473 | |
c3027eb5 CM |
474 | /* modification sequence number for NFS */ |
475 | __le64 sequence; | |
476 | ||
477 | /* | |
478 | * a little future expansion, for more than this we can | |
479 | * just grow the inode item and version it | |
480 | */ | |
481 | __le64 reserved[4]; | |
0b86a832 CM |
482 | struct btrfs_timespec atime; |
483 | struct btrfs_timespec ctime; | |
484 | struct btrfs_timespec mtime; | |
485 | struct btrfs_timespec otime; | |
1e1d2701 CM |
486 | } __attribute__ ((__packed__)); |
487 | ||
e02119d5 CM |
488 | struct btrfs_dir_log_item { |
489 | __le64 end; | |
490 | } __attribute__ ((__packed__)); | |
491 | ||
62e2749e | 492 | struct btrfs_dir_item { |
d6e4a428 | 493 | struct btrfs_disk_key location; |
e02119d5 | 494 | __le64 transid; |
5103e947 | 495 | __le16 data_len; |
a8a2ee0c | 496 | __le16 name_len; |
62e2749e CM |
497 | u8 type; |
498 | } __attribute__ ((__packed__)); | |
499 | ||
500 | struct btrfs_root_item { | |
d6e4a428 | 501 | struct btrfs_inode_item inode; |
84234f3a | 502 | __le64 generation; |
d6e4a428 | 503 | __le64 root_dirid; |
db94535d CM |
504 | __le64 bytenr; |
505 | __le64 byte_limit; | |
506 | __le64 bytes_used; | |
80ff3856 | 507 | __le64 last_snapshot; |
f2b636e8 | 508 | __le64 flags; |
62e2749e | 509 | __le32 refs; |
5eda7b5e CM |
510 | struct btrfs_disk_key drop_progress; |
511 | u8 drop_level; | |
db94535d | 512 | u8 level; |
9f5fae2f | 513 | } __attribute__ ((__packed__)); |
62e2749e | 514 | |
0660b5af CM |
515 | /* |
516 | * this is used for both forward and backward root refs | |
517 | */ | |
518 | struct btrfs_root_ref { | |
519 | __le64 dirid; | |
520 | __le64 sequence; | |
521 | __le16 name_len; | |
522 | } __attribute__ ((__packed__)); | |
523 | ||
d899e052 YZ |
524 | #define BTRFS_FILE_EXTENT_INLINE 0 |
525 | #define BTRFS_FILE_EXTENT_REG 1 | |
526 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 527 | |
9f5fae2f | 528 | struct btrfs_file_extent_item { |
c8b97818 CM |
529 | /* |
530 | * transaction id that created this extent | |
531 | */ | |
71951f35 | 532 | __le64 generation; |
c8b97818 CM |
533 | /* |
534 | * max number of bytes to hold this extent in ram | |
535 | * when we split a compressed extent we can't know how big | |
536 | * each of the resulting pieces will be. So, this is | |
537 | * an upper limit on the size of the extent in ram instead of | |
538 | * an exact limit. | |
539 | */ | |
540 | __le64 ram_bytes; | |
541 | ||
542 | /* | |
543 | * 32 bits for the various ways we might encode the data, | |
544 | * including compression and encryption. If any of these | |
545 | * are set to something a given disk format doesn't understand | |
546 | * it is treated like an incompat flag for reading and writing, | |
547 | * but not for stat. | |
548 | */ | |
549 | u8 compression; | |
550 | u8 encryption; | |
551 | __le16 other_encoding; /* spare for later use */ | |
552 | ||
553 | /* are we inline data or a real extent? */ | |
236454df | 554 | u8 type; |
c8b97818 | 555 | |
9f5fae2f CM |
556 | /* |
557 | * disk space consumed by the extent, checksum blocks are included | |
558 | * in these numbers | |
559 | */ | |
db94535d CM |
560 | __le64 disk_bytenr; |
561 | __le64 disk_num_bytes; | |
9f5fae2f | 562 | /* |
dee26a9f | 563 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
564 | * this extent record is for. This allows a file extent to point |
565 | * into the middle of an existing extent on disk, sharing it | |
566 | * between two snapshots (useful if some bytes in the middle of the | |
567 | * extent have changed | |
568 | */ | |
569 | __le64 offset; | |
570 | /* | |
c8b97818 CM |
571 | * the logical number of file blocks (no csums included). This |
572 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 573 | */ |
db94535d | 574 | __le64 num_bytes; |
c8b97818 | 575 | |
9f5fae2f CM |
576 | } __attribute__ ((__packed__)); |
577 | ||
f254e52c | 578 | struct btrfs_csum_item { |
509659cd | 579 | u8 csum; |
f254e52c CM |
580 | } __attribute__ ((__packed__)); |
581 | ||
0b86a832 CM |
582 | /* different types of block groups (and chunks) */ |
583 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
584 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
585 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 586 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 587 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 588 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 589 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
1e2677e0 | 590 | |
9078a3e1 CM |
591 | struct btrfs_block_group_item { |
592 | __le64 used; | |
0b86a832 CM |
593 | __le64 chunk_objectid; |
594 | __le64 flags; | |
9078a3e1 CM |
595 | } __attribute__ ((__packed__)); |
596 | ||
6324fbf3 CM |
597 | struct btrfs_space_info { |
598 | u64 flags; | |
6a63209f JB |
599 | |
600 | u64 total_bytes; /* total bytes in the space */ | |
601 | u64 bytes_used; /* total bytes used on disk */ | |
602 | u64 bytes_pinned; /* total bytes pinned, will be freed when the | |
603 | transaction finishes */ | |
604 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
605 | current allocations */ | |
606 | u64 bytes_readonly; /* total bytes that are read only */ | |
607 | ||
608 | /* delalloc accounting */ | |
609 | u64 bytes_delalloc; /* number of bytes reserved for allocation, | |
610 | this space is not necessarily reserved yet | |
611 | by the allocator */ | |
612 | u64 bytes_may_use; /* number of bytes that may be used for | |
613 | delalloc */ | |
614 | ||
615 | int full; /* indicates that we cannot allocate any more | |
616 | chunks for this space */ | |
617 | int force_alloc; /* set if we need to force a chunk alloc for | |
618 | this space */ | |
619 | ||
6324fbf3 | 620 | struct list_head list; |
0f9dd46c JB |
621 | |
622 | /* for block groups in our same type */ | |
623 | struct list_head block_groups; | |
624 | spinlock_t lock; | |
80eb234a | 625 | struct rw_semaphore groups_sem; |
0f9dd46c JB |
626 | }; |
627 | ||
628 | struct btrfs_free_space { | |
629 | struct rb_node bytes_index; | |
630 | struct rb_node offset_index; | |
631 | u64 offset; | |
632 | u64 bytes; | |
6324fbf3 CM |
633 | }; |
634 | ||
9078a3e1 CM |
635 | struct btrfs_block_group_cache { |
636 | struct btrfs_key key; | |
637 | struct btrfs_block_group_item item; | |
c286ac48 | 638 | spinlock_t lock; |
25179201 | 639 | struct mutex alloc_mutex; |
ea6a478e | 640 | struct mutex cache_mutex; |
324ae4df | 641 | u64 pinned; |
e8569813 | 642 | u64 reserved; |
0b86a832 CM |
643 | u64 flags; |
644 | int cached; | |
8f18cf13 | 645 | int ro; |
0f9dd46c JB |
646 | int dirty; |
647 | ||
648 | struct btrfs_space_info *space_info; | |
649 | ||
650 | /* free space cache stuff */ | |
651 | struct rb_root free_space_bytes; | |
652 | struct rb_root free_space_offset; | |
653 | ||
654 | /* block group cache stuff */ | |
655 | struct rb_node cache_node; | |
656 | ||
657 | /* for block groups in the same raid type */ | |
658 | struct list_head list; | |
d2fb3437 YZ |
659 | |
660 | /* usage count */ | |
661 | atomic_t count; | |
9078a3e1 | 662 | }; |
0b86a832 | 663 | |
e4657689 ZY |
664 | struct btrfs_leaf_ref_tree { |
665 | struct rb_root root; | |
666 | struct list_head list; | |
667 | spinlock_t lock; | |
668 | }; | |
669 | ||
0b86a832 | 670 | struct btrfs_device; |
8a4b83cc | 671 | struct btrfs_fs_devices; |
9f5fae2f | 672 | struct btrfs_fs_info { |
5f39d397 | 673 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 674 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
675 | struct btrfs_root *extent_root; |
676 | struct btrfs_root *tree_root; | |
0b86a832 CM |
677 | struct btrfs_root *chunk_root; |
678 | struct btrfs_root *dev_root; | |
3de4586c | 679 | struct btrfs_root *fs_root; |
d20f7043 | 680 | struct btrfs_root *csum_root; |
e02119d5 CM |
681 | |
682 | /* the log root tree is a directory of all the other log roots */ | |
683 | struct btrfs_root *log_root_tree; | |
0f7d52f4 | 684 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 685 | |
0f9dd46c JB |
686 | /* block group cache stuff */ |
687 | spinlock_t block_group_cache_lock; | |
688 | struct rb_root block_group_cache_tree; | |
689 | ||
d1310b2e CM |
690 | struct extent_io_tree pinned_extents; |
691 | struct extent_io_tree pending_del; | |
692 | struct extent_io_tree extent_ins; | |
1a5bc167 | 693 | |
0b86a832 CM |
694 | /* logical->physical extent mapping */ |
695 | struct btrfs_mapping_tree mapping_tree; | |
696 | ||
293ffd5f | 697 | u64 generation; |
15ee9bc7 | 698 | u64 last_trans_committed; |
e02119d5 | 699 | u64 last_trans_new_blockgroup; |
9ca9ee09 | 700 | u64 open_ioctl_trans; |
b6cda9bc | 701 | unsigned long mount_opt; |
c59f8951 | 702 | u64 max_extent; |
6f568d35 | 703 | u64 max_inline; |
8f662a76 | 704 | u64 alloc_start; |
79154b1b | 705 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 706 | wait_queue_head_t transaction_throttle; |
f9295749 | 707 | wait_queue_head_t transaction_wait; |
771ed689 | 708 | wait_queue_head_t async_submit_wait; |
e02119d5 | 709 | |
4b52dff6 | 710 | struct btrfs_super_block super_copy; |
a061fc8d | 711 | struct btrfs_super_block super_for_commit; |
0b86a832 | 712 | struct block_device *__bdev; |
e20d96d6 | 713 | struct super_block *sb; |
d98237b3 | 714 | struct inode *btree_inode; |
04160088 | 715 | struct backing_dev_info bdi; |
79154b1b | 716 | struct mutex trans_mutex; |
e02119d5 | 717 | struct mutex tree_log_mutex; |
a74a4b97 CM |
718 | struct mutex transaction_kthread_mutex; |
719 | struct mutex cleaner_mutex; | |
25179201 JB |
720 | struct mutex extent_ins_mutex; |
721 | struct mutex pinned_mutex; | |
925baedd | 722 | struct mutex chunk_mutex; |
a2135011 | 723 | struct mutex drop_mutex; |
7d9eb12c | 724 | struct mutex volume_mutex; |
1a40e23b | 725 | struct mutex tree_reloc_mutex; |
8fd17795 | 726 | struct list_head trans_list; |
19c00ddc | 727 | struct list_head hashers; |
facda1e7 | 728 | struct list_head dead_roots; |
e02119d5 | 729 | |
cb03c743 | 730 | atomic_t nr_async_submits; |
8c8bee1d | 731 | atomic_t async_submit_draining; |
0986fe9e | 732 | atomic_t nr_async_bios; |
771ed689 | 733 | atomic_t async_delalloc_pages; |
ce9adaa5 | 734 | |
3eaa2885 CM |
735 | /* |
736 | * this is used by the balancing code to wait for all the pending | |
737 | * ordered extents | |
738 | */ | |
739 | spinlock_t ordered_extent_lock; | |
740 | struct list_head ordered_extents; | |
ea8c2819 | 741 | struct list_head delalloc_inodes; |
3eaa2885 | 742 | |
8b712842 CM |
743 | /* |
744 | * there is a pool of worker threads for checksumming during writes | |
745 | * and a pool for checksumming after reads. This is because readers | |
746 | * can run with FS locks held, and the writers may be waiting for | |
747 | * those locks. We don't want ordering in the pending list to cause | |
748 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
749 | * |
750 | * A third pool does submit_bio to avoid deadlocking with the other | |
751 | * two | |
8b712842 CM |
752 | */ |
753 | struct btrfs_workers workers; | |
771ed689 | 754 | struct btrfs_workers delalloc_workers; |
8b712842 | 755 | struct btrfs_workers endio_workers; |
d20f7043 | 756 | struct btrfs_workers endio_meta_workers; |
cad321ad | 757 | struct btrfs_workers endio_meta_write_workers; |
e6dcd2dc | 758 | struct btrfs_workers endio_write_workers; |
1cc127b5 | 759 | struct btrfs_workers submit_workers; |
247e743c CM |
760 | /* |
761 | * fixup workers take dirty pages that didn't properly go through | |
762 | * the cow mechanism and make them safe to write. It happens | |
763 | * for the sys_munmap function call path | |
764 | */ | |
765 | struct btrfs_workers fixup_workers; | |
a74a4b97 CM |
766 | struct task_struct *transaction_kthread; |
767 | struct task_struct *cleaner_kthread; | |
4543df7e | 768 | int thread_pool_size; |
8b712842 | 769 | |
1a40e23b | 770 | /* tree relocation relocated fields */ |
1a40e23b ZY |
771 | struct list_head dead_reloc_roots; |
772 | struct btrfs_leaf_ref_tree reloc_ref_tree; | |
e4657689 ZY |
773 | struct btrfs_leaf_ref_tree shared_ref_tree; |
774 | ||
58176a96 JB |
775 | struct kobject super_kobj; |
776 | struct completion kobj_unregister; | |
e66f709b | 777 | int do_barriers; |
facda1e7 | 778 | int closing; |
e02119d5 | 779 | int log_root_recovering; |
a2135011 | 780 | atomic_t throttles; |
ab78c84d | 781 | atomic_t throttle_gen; |
9f5fae2f | 782 | |
324ae4df | 783 | u64 total_pinned; |
0b86a832 CM |
784 | struct list_head dirty_cowonly_roots; |
785 | ||
8a4b83cc | 786 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
787 | |
788 | /* | |
789 | * the space_info list is almost entirely read only. It only changes | |
790 | * when we add a new raid type to the FS, and that happens | |
791 | * very rarely. RCU is used to protect it. | |
792 | */ | |
6324fbf3 | 793 | struct list_head space_info; |
4184ea7f | 794 | |
1832a6d5 | 795 | spinlock_t delalloc_lock; |
cee36a03 | 796 | spinlock_t new_trans_lock; |
1832a6d5 | 797 | u64 delalloc_bytes; |
e18e4809 | 798 | u64 last_alloc; |
4529ba49 | 799 | u64 last_data_alloc; |
d18a2c44 | 800 | |
31153d81 YZ |
801 | spinlock_t ref_cache_lock; |
802 | u64 total_ref_cache_size; | |
31153d81 | 803 | |
d18a2c44 CM |
804 | u64 avail_data_alloc_bits; |
805 | u64 avail_metadata_alloc_bits; | |
806 | u64 avail_system_alloc_bits; | |
807 | u64 data_alloc_profile; | |
808 | u64 metadata_alloc_profile; | |
809 | u64 system_alloc_profile; | |
788f20eb CM |
810 | |
811 | void *bdev_holder; | |
324ae4df | 812 | }; |
0b86a832 | 813 | |
9f5fae2f CM |
814 | /* |
815 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 816 | * and for the extent tree extent_root root. |
9f5fae2f | 817 | */ |
f321e491 | 818 | struct btrfs_dirty_root; |
9f5fae2f | 819 | struct btrfs_root { |
5f39d397 | 820 | struct extent_buffer *node; |
925baedd CM |
821 | |
822 | /* the node lock is held while changing the node pointer */ | |
823 | spinlock_t node_lock; | |
824 | ||
5f39d397 | 825 | struct extent_buffer *commit_root; |
31153d81 | 826 | struct btrfs_leaf_ref_tree *ref_tree; |
017e5369 | 827 | struct btrfs_leaf_ref_tree ref_tree_struct; |
f321e491 | 828 | struct btrfs_dirty_root *dirty_root; |
e02119d5 | 829 | struct btrfs_root *log_root; |
1a40e23b | 830 | struct btrfs_root *reloc_root; |
31153d81 | 831 | |
62e2749e CM |
832 | struct btrfs_root_item root_item; |
833 | struct btrfs_key root_key; | |
9f5fae2f | 834 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
835 | struct extent_io_tree dirty_log_pages; |
836 | ||
58176a96 JB |
837 | struct kobject root_kobj; |
838 | struct completion kobj_unregister; | |
a2135011 | 839 | struct mutex objectid_mutex; |
7237f183 | 840 | |
e02119d5 | 841 | struct mutex log_mutex; |
7237f183 YZ |
842 | wait_queue_head_t log_writer_wait; |
843 | wait_queue_head_t log_commit_wait[2]; | |
844 | atomic_t log_writers; | |
845 | atomic_t log_commit[2]; | |
846 | unsigned long log_transid; | |
847 | unsigned long log_batch; | |
ea8c2819 | 848 | |
0f7d52f4 CM |
849 | u64 objectid; |
850 | u64 last_trans; | |
5f39d397 CM |
851 | |
852 | /* data allocations are done in sectorsize units */ | |
853 | u32 sectorsize; | |
854 | ||
855 | /* node allocations are done in nodesize units */ | |
856 | u32 nodesize; | |
857 | ||
858 | /* leaf allocations are done in leafsize units */ | |
859 | u32 leafsize; | |
860 | ||
87ee04eb CM |
861 | u32 stripesize; |
862 | ||
9f5fae2f | 863 | u32 type; |
1b05da2e CM |
864 | u64 highest_inode; |
865 | u64 last_inode_alloc; | |
9f3a7427 | 866 | int ref_cows; |
0b86a832 | 867 | int track_dirty; |
3f157a2f | 868 | u64 defrag_trans_start; |
6702ed49 | 869 | struct btrfs_key defrag_progress; |
0ef3e66b | 870 | struct btrfs_key defrag_max; |
6702ed49 CM |
871 | int defrag_running; |
872 | int defrag_level; | |
58176a96 | 873 | char *name; |
4313b399 | 874 | int in_sysfs; |
0b86a832 CM |
875 | |
876 | /* the dirty list is only used by non-reference counted roots */ | |
877 | struct list_head dirty_list; | |
7b128766 | 878 | |
bcc63abb Y |
879 | spinlock_t list_lock; |
880 | struct list_head dead_list; | |
7b128766 | 881 | struct list_head orphan_list; |
3394e160 CM |
882 | |
883 | /* | |
884 | * right now this just gets used so that a root has its own devid | |
885 | * for stat. It may be used for more later | |
886 | */ | |
887 | struct super_block anon_super; | |
62e2749e CM |
888 | }; |
889 | ||
1e1d2701 | 890 | /* |
0b86a832 | 891 | |
1e1d2701 CM |
892 | * inode items have the data typically returned from stat and store other |
893 | * info about object characteristics. There is one for every file and dir in | |
894 | * the FS | |
895 | */ | |
9078a3e1 | 896 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af CM |
897 | #define BTRFS_INODE_REF_KEY 12 |
898 | #define BTRFS_XATTR_ITEM_KEY 24 | |
899 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 900 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
901 | |
902 | /* | |
903 | * dir items are the name -> inode pointers in a directory. There is one | |
904 | * for every name in a directory. | |
905 | */ | |
0660b5af CM |
906 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
907 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
908 | #define BTRFS_DIR_ITEM_KEY 84 | |
909 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 910 | /* |
9078a3e1 | 911 | * extent data is for file data |
1e1d2701 | 912 | */ |
0660b5af | 913 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 914 | |
f254e52c | 915 | /* |
d20f7043 CM |
916 | * extent csums are stored in a separate tree and hold csums for |
917 | * an entire extent on disk. | |
f254e52c | 918 | */ |
d20f7043 | 919 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 920 | |
1e1d2701 CM |
921 | /* |
922 | * root items point to tree roots. There are typically in the root | |
923 | * tree used by the super block to find all the other trees | |
924 | */ | |
0660b5af CM |
925 | #define BTRFS_ROOT_ITEM_KEY 132 |
926 | ||
927 | /* | |
928 | * root backrefs tie subvols and snapshots to the directory entries that | |
929 | * reference them | |
930 | */ | |
931 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
932 | ||
933 | /* | |
934 | * root refs make a fast index for listing all of the snapshots and | |
935 | * subvolumes referenced by a given root. They point directly to the | |
936 | * directory item in the root that references the subvol | |
937 | */ | |
938 | #define BTRFS_ROOT_REF_KEY 156 | |
939 | ||
1e1d2701 CM |
940 | /* |
941 | * extent items are in the extent map tree. These record which blocks | |
942 | * are used, and how many references there are to each block | |
943 | */ | |
0660b5af CM |
944 | #define BTRFS_EXTENT_ITEM_KEY 168 |
945 | #define BTRFS_EXTENT_REF_KEY 180 | |
9078a3e1 CM |
946 | |
947 | /* | |
948 | * block groups give us hints into the extent allocation trees. Which | |
949 | * blocks are free etc etc | |
950 | */ | |
0660b5af | 951 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 952 | |
0660b5af CM |
953 | #define BTRFS_DEV_EXTENT_KEY 204 |
954 | #define BTRFS_DEV_ITEM_KEY 216 | |
955 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 956 | |
1e1d2701 CM |
957 | /* |
958 | * string items are for debugging. They just store a short string of | |
959 | * data in the FS | |
960 | */ | |
9078a3e1 CM |
961 | #define BTRFS_STRING_ITEM_KEY 253 |
962 | ||
21ad10cf CM |
963 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
964 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
965 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 966 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 967 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 968 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
b6cda9bc CM |
969 | |
970 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
971 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
972 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
973 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
974 | /* |
975 | * Inode flags | |
976 | */ | |
fdebe2bd Y |
977 | #define BTRFS_INODE_NODATASUM (1 << 0) |
978 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
979 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 980 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 981 | #define BTRFS_INODE_PREALLOC (1 << 4) |
b98b6767 Y |
982 | #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \ |
983 | ~BTRFS_INODE_##flag) | |
984 | #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \ | |
985 | BTRFS_INODE_##flag) | |
986 | #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \ | |
987 | BTRFS_INODE_##flag) | |
5f39d397 CM |
988 | /* some macros to generate set/get funcs for the struct fields. This |
989 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
990 | * one for u8: | |
991 | */ | |
992 | #define le8_to_cpu(v) (v) | |
993 | #define cpu_to_le8(v) (v) | |
994 | #define __le8 u8 | |
995 | ||
996 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
997 | read_extent_buffer(eb, (char *)(result), \ | |
998 | ((unsigned long)(ptr)) + \ | |
999 | offsetof(type, member), \ | |
1000 | sizeof(((type *)0)->member))) | |
1001 | ||
1002 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1003 | write_extent_buffer(eb, (char *)(result), \ | |
1004 | ((unsigned long)(ptr)) + \ | |
1005 | offsetof(type, member), \ | |
1006 | sizeof(((type *)0)->member))) | |
1007 | ||
0f82731f | 1008 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 1009 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
1010 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
1011 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
1012 | #endif | |
5f39d397 CM |
1013 | |
1014 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1015 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1016 | { \ | |
df68b8a7 DM |
1017 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1018 | u##bits res = le##bits##_to_cpu(p->member); \ | |
1019 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 1020 | return res; \ |
5f39d397 CM |
1021 | } \ |
1022 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1023 | u##bits val) \ | |
1024 | { \ | |
df68b8a7 DM |
1025 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1026 | p->member = cpu_to_le##bits(val); \ | |
1027 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 1028 | } |
9078a3e1 | 1029 | |
5f39d397 CM |
1030 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1031 | static inline u##bits btrfs_##name(type *s) \ | |
1032 | { \ | |
1033 | return le##bits##_to_cpu(s->member); \ | |
1034 | } \ | |
1035 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1036 | { \ | |
1037 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1038 | } |
1039 | ||
0b86a832 CM |
1040 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1041 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1042 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1043 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1044 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1045 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1046 | start_offset, 64); | |
0b86a832 CM |
1047 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1048 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1049 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1050 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1051 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1052 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1053 | |
8a4b83cc CM |
1054 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1055 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1056 | total_bytes, 64); | |
1057 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1058 | bytes_used, 64); | |
1059 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1060 | io_align, 32); | |
1061 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1062 | io_width, 32); | |
1063 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1064 | sector_size, 32); | |
1065 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1066 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1067 | dev_group, 32); | |
1068 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1069 | seek_speed, 8); | |
1070 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1071 | bandwidth, 8); | |
2b82032c YZ |
1072 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1073 | generation, 64); | |
8a4b83cc | 1074 | |
0b86a832 CM |
1075 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
1076 | { | |
1077 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
1078 | } | |
1079 | ||
2b82032c YZ |
1080 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
1081 | { | |
1082 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
1083 | } | |
1084 | ||
e17cade2 | 1085 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1086 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1087 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1088 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1089 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1090 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1091 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1092 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1093 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1094 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1095 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1096 | ||
e17cade2 CM |
1097 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1098 | { | |
1099 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1100 | } | |
1101 | ||
1102 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1103 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1104 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1105 | stripe_len, 64); | |
1106 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1107 | io_align, 32); | |
1108 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1109 | io_width, 32); | |
1110 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1111 | sector_size, 32); | |
1112 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1113 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1114 | num_stripes, 16); | |
321aecc6 CM |
1115 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1116 | sub_stripes, 16); | |
0b86a832 CM |
1117 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1118 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1119 | ||
1120 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1121 | int nr) | |
1122 | { | |
1123 | unsigned long offset = (unsigned long)c; | |
1124 | offset += offsetof(struct btrfs_chunk, stripe); | |
1125 | offset += nr * sizeof(struct btrfs_stripe); | |
1126 | return (struct btrfs_stripe *)offset; | |
1127 | } | |
1128 | ||
a443755f CM |
1129 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1130 | { | |
1131 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1132 | } | |
1133 | ||
0b86a832 CM |
1134 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1135 | struct btrfs_chunk *c, int nr) | |
1136 | { | |
1137 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1138 | } | |
1139 | ||
1140 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, | |
1141 | struct btrfs_chunk *c, int nr, | |
1142 | u64 val) | |
1143 | { | |
1144 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
1145 | } | |
1146 | ||
1147 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, | |
1148 | struct btrfs_chunk *c, int nr) | |
1149 | { | |
1150 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1151 | } | |
1152 | ||
1153 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, | |
1154 | struct btrfs_chunk *c, int nr, | |
1155 | u64 val) | |
1156 | { | |
1157 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
1158 | } | |
1159 | ||
5f39d397 CM |
1160 | /* struct btrfs_block_group_item */ |
1161 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1162 | used, 64); | |
1163 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1164 | used, 64); | |
0b86a832 CM |
1165 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1166 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1167 | |
1168 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1169 | struct btrfs_block_group_item, chunk_objectid, 64); |
1170 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1171 | struct btrfs_block_group_item, flags, 64); | |
1172 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1173 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1174 | |
3954401f CM |
1175 | /* struct btrfs_inode_ref */ |
1176 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1177 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1178 | |
5f39d397 CM |
1179 | /* struct btrfs_inode_item */ |
1180 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1181 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1182 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1183 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1184 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1185 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1186 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1187 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1188 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1189 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1190 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1191 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
1e1d2701 | 1192 | |
0b86a832 | 1193 | static inline struct btrfs_timespec * |
5f39d397 | 1194 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1195 | { |
5f39d397 CM |
1196 | unsigned long ptr = (unsigned long)inode_item; |
1197 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1198 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1199 | } |
1200 | ||
0b86a832 | 1201 | static inline struct btrfs_timespec * |
5f39d397 | 1202 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1203 | { |
5f39d397 CM |
1204 | unsigned long ptr = (unsigned long)inode_item; |
1205 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1206 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1207 | } |
1208 | ||
0b86a832 | 1209 | static inline struct btrfs_timespec * |
5f39d397 | 1210 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1211 | { |
5f39d397 CM |
1212 | unsigned long ptr = (unsigned long)inode_item; |
1213 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1214 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1215 | } |
1216 | ||
0b86a832 | 1217 | static inline struct btrfs_timespec * |
5f39d397 | 1218 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1219 | { |
5f39d397 CM |
1220 | unsigned long ptr = (unsigned long)inode_item; |
1221 | ptr += offsetof(struct btrfs_inode_item, otime); | |
0b86a832 | 1222 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1223 | } |
1224 | ||
0b86a832 CM |
1225 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1226 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1227 | |
0b86a832 | 1228 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1229 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1230 | chunk_tree, 64); | |
1231 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1232 | chunk_objectid, 64); | |
1233 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1234 | chunk_offset, 64); | |
0b86a832 CM |
1235 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1236 | ||
e17cade2 CM |
1237 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1238 | { | |
1239 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1240 | return (u8 *)((unsigned long)dev + ptr); | |
1241 | } | |
1242 | ||
74493f7a CM |
1243 | /* struct btrfs_extent_ref */ |
1244 | BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64); | |
1245 | BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64); | |
1246 | BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64); | |
31840ae1 | 1247 | BTRFS_SETGET_FUNCS(ref_num_refs, struct btrfs_extent_ref, num_refs, 32); |
74493f7a | 1248 | |
7bb86316 CM |
1249 | BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64); |
1250 | BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref, | |
74493f7a | 1251 | generation, 64); |
7bb86316 CM |
1252 | BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref, |
1253 | objectid, 64); | |
31840ae1 ZY |
1254 | BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs, struct btrfs_extent_ref, |
1255 | num_refs, 32); | |
e20d96d6 | 1256 | |
31840ae1 ZY |
1257 | /* struct btrfs_extent_item */ |
1258 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32); | |
5f39d397 CM |
1259 | BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, |
1260 | refs, 32); | |
e20d96d6 | 1261 | |
5f39d397 CM |
1262 | /* struct btrfs_node */ |
1263 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1264 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1265 | |
5f39d397 | 1266 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1267 | { |
5f39d397 CM |
1268 | unsigned long ptr; |
1269 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1270 | sizeof(struct btrfs_key_ptr) * nr; | |
1271 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1272 | } |
1273 | ||
5f39d397 CM |
1274 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1275 | int nr, u64 val) | |
cf27e1ee | 1276 | { |
5f39d397 CM |
1277 | unsigned long ptr; |
1278 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1279 | sizeof(struct btrfs_key_ptr) * nr; | |
1280 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1281 | } |
1282 | ||
74493f7a CM |
1283 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1284 | { | |
1285 | unsigned long ptr; | |
1286 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1287 | sizeof(struct btrfs_key_ptr) * nr; | |
1288 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1289 | } | |
1290 | ||
1291 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1292 | int nr, u64 val) | |
1293 | { | |
1294 | unsigned long ptr; | |
1295 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1296 | sizeof(struct btrfs_key_ptr) * nr; | |
1297 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1298 | } | |
1299 | ||
810191ff | 1300 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1301 | { |
5f39d397 CM |
1302 | return offsetof(struct btrfs_node, ptrs) + |
1303 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1304 | } |
1305 | ||
e644d021 CM |
1306 | void btrfs_node_key(struct extent_buffer *eb, |
1307 | struct btrfs_disk_key *disk_key, int nr); | |
1308 | ||
5f39d397 CM |
1309 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1310 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1311 | { |
5f39d397 CM |
1312 | unsigned long ptr; |
1313 | ptr = btrfs_node_key_ptr_offset(nr); | |
1314 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1315 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1316 | } |
1317 | ||
5f39d397 CM |
1318 | /* struct btrfs_item */ |
1319 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1320 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1321 | |
5f39d397 | 1322 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1323 | { |
5f39d397 CM |
1324 | return offsetof(struct btrfs_leaf, items) + |
1325 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1326 | } |
1327 | ||
5f39d397 CM |
1328 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1329 | int nr) | |
0783fcfc | 1330 | { |
5f39d397 | 1331 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1332 | } |
1333 | ||
5f39d397 CM |
1334 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1335 | struct btrfs_item *item) | |
0783fcfc | 1336 | { |
5f39d397 | 1337 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1338 | } |
1339 | ||
5f39d397 | 1340 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1341 | { |
5f39d397 | 1342 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1343 | } |
1344 | ||
5f39d397 | 1345 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1346 | { |
5f39d397 | 1347 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1348 | } |
1349 | ||
5f39d397 | 1350 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1351 | { |
5f39d397 | 1352 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1353 | } |
1354 | ||
5f39d397 CM |
1355 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1356 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1357 | { |
5f39d397 CM |
1358 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1359 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1360 | } |
1361 | ||
5f39d397 CM |
1362 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1363 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1364 | { |
5f39d397 CM |
1365 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1366 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1367 | } |
1368 | ||
e02119d5 CM |
1369 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1370 | ||
0660b5af CM |
1371 | /* |
1372 | * struct btrfs_root_ref | |
1373 | */ | |
1374 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1375 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1376 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1377 | ||
5f39d397 | 1378 | /* struct btrfs_dir_item */ |
5103e947 | 1379 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1380 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1381 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1382 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1383 | |
5f39d397 CM |
1384 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1385 | struct btrfs_dir_item *item, | |
1386 | struct btrfs_disk_key *key) | |
1d4f6404 | 1387 | { |
5f39d397 | 1388 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1389 | } |
1390 | ||
5f39d397 CM |
1391 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1392 | struct btrfs_dir_item *item, | |
1393 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1394 | { |
5f39d397 | 1395 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1396 | } |
1397 | ||
5f39d397 CM |
1398 | /* struct btrfs_disk_key */ |
1399 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1400 | objectid, 64); | |
1401 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1402 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1403 | |
e2fa7227 CM |
1404 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1405 | struct btrfs_disk_key *disk) | |
1406 | { | |
1407 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1408 | cpu->type = disk->type; |
e2fa7227 CM |
1409 | cpu->objectid = le64_to_cpu(disk->objectid); |
1410 | } | |
1411 | ||
1412 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1413 | struct btrfs_key *cpu) | |
1414 | { | |
1415 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1416 | disk->type = cpu->type; |
e2fa7227 CM |
1417 | disk->objectid = cpu_to_le64(cpu->objectid); |
1418 | } | |
1419 | ||
5f39d397 CM |
1420 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1421 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1422 | { |
5f39d397 CM |
1423 | struct btrfs_disk_key disk_key; |
1424 | btrfs_node_key(eb, &disk_key, nr); | |
1425 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1426 | } |
1427 | ||
5f39d397 CM |
1428 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1429 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1430 | { |
5f39d397 CM |
1431 | struct btrfs_disk_key disk_key; |
1432 | btrfs_item_key(eb, &disk_key, nr); | |
1433 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1434 | } |
1435 | ||
5f39d397 CM |
1436 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1437 | struct btrfs_dir_item *item, | |
1438 | struct btrfs_key *key) | |
4d775673 | 1439 | { |
5f39d397 CM |
1440 | struct btrfs_disk_key disk_key; |
1441 | btrfs_dir_item_key(eb, item, &disk_key); | |
1442 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1443 | } |
1444 | ||
58176a96 | 1445 | |
5f39d397 | 1446 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1447 | { |
5f39d397 | 1448 | return key->type; |
3768f368 CM |
1449 | } |
1450 | ||
5f39d397 | 1451 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1452 | { |
5f39d397 | 1453 | key->type = val; |
3768f368 CM |
1454 | } |
1455 | ||
5f39d397 | 1456 | /* struct btrfs_header */ |
db94535d | 1457 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1458 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1459 | generation, 64); | |
1460 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1461 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1462 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1463 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1464 | |
63b10fc4 CM |
1465 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1466 | { | |
1467 | return (btrfs_header_flags(eb) & flag) == flag; | |
1468 | } | |
1469 | ||
1470 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1471 | { | |
1472 | u64 flags = btrfs_header_flags(eb); | |
1473 | btrfs_set_header_flags(eb, flags | flag); | |
1474 | return (flags & flag) == flag; | |
1475 | } | |
1476 | ||
1477 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1478 | { | |
1479 | u64 flags = btrfs_header_flags(eb); | |
1480 | btrfs_set_header_flags(eb, flags & ~flag); | |
1481 | return (flags & flag) == flag; | |
1482 | } | |
1483 | ||
5f39d397 | 1484 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1485 | { |
5f39d397 CM |
1486 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1487 | return (u8 *)ptr; | |
0f7d52f4 CM |
1488 | } |
1489 | ||
e17cade2 CM |
1490 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1491 | { | |
1492 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1493 | return (u8 *)ptr; | |
1494 | } | |
1495 | ||
5f39d397 | 1496 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 1497 | { |
5f39d397 CM |
1498 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
1499 | return (u8 *)ptr; | |
3768f368 CM |
1500 | } |
1501 | ||
5f39d397 | 1502 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 1503 | { |
5f39d397 CM |
1504 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
1505 | return (u8 *)ptr; | |
3768f368 CM |
1506 | } |
1507 | ||
5f39d397 | 1508 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 1509 | { |
5f39d397 | 1510 | return NULL; |
3768f368 CM |
1511 | } |
1512 | ||
5f39d397 | 1513 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 1514 | { |
5f39d397 | 1515 | return NULL; |
3768f368 CM |
1516 | } |
1517 | ||
5f39d397 | 1518 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 1519 | { |
5f39d397 | 1520 | return NULL; |
3768f368 CM |
1521 | } |
1522 | ||
5f39d397 | 1523 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1524 | { |
d397712b | 1525 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
1526 | } |
1527 | ||
5f39d397 | 1528 | /* struct btrfs_root_item */ |
84234f3a YZ |
1529 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
1530 | generation, 64); | |
5f39d397 | 1531 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
1532 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1533 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1534 | |
84234f3a YZ |
1535 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
1536 | generation, 64); | |
db94535d CM |
1537 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1538 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1539 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1540 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 1541 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
1542 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1543 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
1544 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
1545 | last_snapshot, 64); | |
123abc88 | 1546 | |
5f39d397 | 1547 | /* struct btrfs_super_block */ |
607d432d | 1548 | |
db94535d | 1549 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1550 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1551 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1552 | generation, 64); | |
1553 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1554 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1555 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
1556 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
1557 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
1558 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1559 | root_level, 8); | |
0b86a832 CM |
1560 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1561 | chunk_root, 64); | |
1562 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
1563 | chunk_root_level, 8); |
1564 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
1565 | log_root, 64); | |
c3027eb5 CM |
1566 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
1567 | log_root_transid, 64); | |
e02119d5 CM |
1568 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
1569 | log_root_level, 8); | |
db94535d CM |
1570 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1571 | total_bytes, 64); | |
1572 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1573 | bytes_used, 64); | |
5f39d397 CM |
1574 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1575 | sectorsize, 32); | |
1576 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1577 | nodesize, 32); | |
1578 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1579 | leafsize, 32); | |
87ee04eb CM |
1580 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1581 | stripesize, 32); | |
5f39d397 CM |
1582 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1583 | root_dir_objectid, 64); | |
8a4b83cc CM |
1584 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1585 | num_devices, 64); | |
f2b636e8 JB |
1586 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
1587 | compat_flags, 64); | |
1588 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
1589 | compat_flags, 64); | |
1590 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, | |
1591 | incompat_flags, 64); | |
607d432d JB |
1592 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
1593 | csum_type, 16); | |
1594 | ||
1595 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
1596 | { | |
1597 | int t = btrfs_super_csum_type(s); | |
1598 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); | |
1599 | return btrfs_csum_sizes[t]; | |
1600 | } | |
2e635a27 | 1601 | |
5f39d397 | 1602 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 1603 | { |
5f39d397 | 1604 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
1605 | } |
1606 | ||
5f39d397 CM |
1607 | /* struct btrfs_file_extent_item */ |
1608 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 1609 | |
d397712b CM |
1610 | static inline unsigned long |
1611 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 1612 | { |
5f39d397 | 1613 | unsigned long offset = (unsigned long)e; |
db94535d | 1614 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1615 | return offset; |
236454df CM |
1616 | } |
1617 | ||
1618 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
1619 | { | |
db94535d | 1620 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
1621 | } |
1622 | ||
db94535d CM |
1623 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
1624 | disk_bytenr, 64); | |
5f39d397 CM |
1625 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
1626 | generation, 64); | |
db94535d CM |
1627 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
1628 | disk_num_bytes, 64); | |
5f39d397 CM |
1629 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
1630 | offset, 64); | |
db94535d CM |
1631 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
1632 | num_bytes, 64); | |
c8b97818 CM |
1633 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
1634 | ram_bytes, 64); | |
1635 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
1636 | compression, 8); | |
1637 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
1638 | encryption, 8); | |
1639 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
1640 | other_encoding, 16); | |
1641 | ||
1642 | /* this returns the number of file bytes represented by the inline item. | |
1643 | * If an item is compressed, this is the uncompressed size | |
1644 | */ | |
1645 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
1646 | struct btrfs_file_extent_item *e) | |
1647 | { | |
1648 | return btrfs_file_extent_ram_bytes(eb, e); | |
1649 | } | |
1650 | ||
1651 | /* | |
1652 | * this returns the number of bytes used by the item on disk, minus the | |
1653 | * size of any extent headers. If a file is compressed on disk, this is | |
1654 | * the compressed size | |
1655 | */ | |
1656 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
1657 | struct btrfs_item *e) | |
1658 | { | |
1659 | unsigned long offset; | |
1660 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
1661 | return btrfs_item_size(eb, e) - offset; | |
1662 | } | |
9f5fae2f | 1663 | |
e20d96d6 CM |
1664 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1665 | { | |
1666 | return sb->s_fs_info; | |
1667 | } | |
1668 | ||
58176a96 JB |
1669 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
1670 | const char *name, int len) | |
1671 | { | |
1672 | /* if we already have a name just free it */ | |
d397712b | 1673 | kfree(root->name); |
58176a96 JB |
1674 | |
1675 | root->name = kmalloc(len+1, GFP_KERNEL); | |
1676 | if (!root->name) | |
1677 | return -ENOMEM; | |
1678 | ||
1679 | memcpy(root->name, name, len); | |
d397712b | 1680 | root->name[len] = '\0'; |
58176a96 JB |
1681 | |
1682 | return 0; | |
1683 | } | |
1684 | ||
d397712b CM |
1685 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
1686 | { | |
db94535d CM |
1687 | if (level == 0) |
1688 | return root->leafsize; | |
1689 | return root->nodesize; | |
1690 | } | |
1691 | ||
4beb1b8b CM |
1692 | /* helper function to cast into the data area of the leaf. */ |
1693 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 1694 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
1695 | btrfs_item_offset_nr(leaf, slot))) |
1696 | ||
1697 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
1698 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
1699 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 1700 | |
2b1f55b0 CM |
1701 | static inline struct dentry *fdentry(struct file *file) |
1702 | { | |
6da6abae | 1703 | return file->f_path.dentry; |
6da6abae CM |
1704 | } |
1705 | ||
b18c6685 | 1706 | /* extent-tree.c */ |
31840ae1 | 1707 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
5b21f2ed ZY |
1708 | int btrfs_lookup_extent_ref(struct btrfs_trans_handle *trans, |
1709 | struct btrfs_root *root, u64 bytenr, | |
1710 | u64 num_bytes, u32 *refs); | |
e02119d5 CM |
1711 | int btrfs_update_pinned_extents(struct btrfs_root *root, |
1712 | u64 bytenr, u64 num, int pin); | |
1713 | int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans, | |
1714 | struct btrfs_root *root, struct extent_buffer *leaf); | |
80ff3856 | 1715 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
17d217fe | 1716 | struct btrfs_root *root, u64 objectid, u64 bytenr); |
e9d0b13b CM |
1717 | int btrfs_extent_post_op(struct btrfs_trans_handle *trans, |
1718 | struct btrfs_root *root); | |
d1310b2e | 1719 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); |
d397712b CM |
1720 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
1721 | struct btrfs_fs_info *info, | |
1722 | u64 bytenr); | |
d2fb3437 YZ |
1723 | u64 btrfs_find_block_group(struct btrfs_root *root, |
1724 | u64 search_start, u64 search_hint, int owner); | |
5f39d397 | 1725 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
7bb86316 | 1726 | struct btrfs_root *root, |
31840ae1 | 1727 | u32 blocksize, u64 parent, |
7bb86316 CM |
1728 | u64 root_objectid, |
1729 | u64 ref_generation, | |
7bb86316 CM |
1730 | int level, |
1731 | u64 hint, | |
1732 | u64 empty_size); | |
65b51a00 CM |
1733 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
1734 | struct btrfs_root *root, | |
4008c04a CM |
1735 | u64 bytenr, u32 blocksize, |
1736 | int level); | |
4d775673 | 1737 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
7bb86316 | 1738 | struct btrfs_root *root, |
31840ae1 | 1739 | u64 num_bytes, u64 parent, u64 min_bytes, |
98d20f67 | 1740 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1741 | u64 owner, u64 empty_size, u64 hint_byte, |
ec44a35c | 1742 | u64 search_end, struct btrfs_key *ins, u64 data); |
e6dcd2dc | 1743 | int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1744 | struct btrfs_root *root, u64 parent, |
e6dcd2dc | 1745 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1746 | u64 owner, struct btrfs_key *ins); |
e02119d5 | 1747 | int btrfs_alloc_logged_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1748 | struct btrfs_root *root, u64 parent, |
e02119d5 | 1749 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1750 | u64 owner, struct btrfs_key *ins); |
e6dcd2dc CM |
1751 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
1752 | struct btrfs_root *root, | |
1753 | u64 num_bytes, u64 min_alloc_size, | |
1754 | u64 empty_size, u64 hint_byte, | |
1755 | u64 search_end, struct btrfs_key *ins, | |
1756 | u64 data); | |
e089f05c | 1757 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
31840ae1 ZY |
1758 | struct extent_buffer *orig_buf, struct extent_buffer *buf, |
1759 | u32 *nr_extents); | |
1760 | int btrfs_cache_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
1761 | struct extent_buffer *buf, u32 nr_extents); | |
1762 | int btrfs_update_ref(struct btrfs_trans_handle *trans, | |
1763 | struct btrfs_root *root, struct extent_buffer *orig_buf, | |
1764 | struct extent_buffer *buf, int start_slot, int nr); | |
1765 | int btrfs_free_extent(struct btrfs_trans_handle *trans, | |
1766 | struct btrfs_root *root, | |
1767 | u64 bytenr, u64 num_bytes, u64 parent, | |
7bb86316 | 1768 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1769 | u64 owner_objectid, int pin); |
65b51a00 | 1770 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
ccd467d6 CM |
1771 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
1772 | struct btrfs_root *root, | |
d1310b2e | 1773 | struct extent_io_tree *unpin); |
b18c6685 | 1774 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
1775 | struct btrfs_root *root, |
1776 | u64 bytenr, u64 num_bytes, u64 parent, | |
1777 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1778 | u64 owner_objectid); |
31840ae1 ZY |
1779 | int btrfs_update_extent_ref(struct btrfs_trans_handle *trans, |
1780 | struct btrfs_root *root, u64 bytenr, | |
1781 | u64 orig_parent, u64 parent, | |
1782 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1783 | u64 owner_objectid); |
9078a3e1 CM |
1784 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1785 | struct btrfs_root *root); | |
d2fb3437 | 1786 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
1787 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
1788 | int btrfs_read_block_groups(struct btrfs_root *root); | |
0b86a832 CM |
1789 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
1790 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 1791 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 1792 | u64 size); |
1a40e23b ZY |
1793 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
1794 | struct btrfs_root *root, u64 group_start); | |
1795 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
f82d02d9 YZ |
1796 | int btrfs_free_reloc_root(struct btrfs_trans_handle *trans, |
1797 | struct btrfs_root *root); | |
1a40e23b | 1798 | int btrfs_drop_dead_reloc_roots(struct btrfs_root *root); |
1a40e23b ZY |
1799 | int btrfs_reloc_tree_cache_ref(struct btrfs_trans_handle *trans, |
1800 | struct btrfs_root *root, | |
1801 | struct extent_buffer *buf, u64 orig_start); | |
1802 | int btrfs_add_dead_reloc_root(struct btrfs_root *root); | |
1803 | int btrfs_cleanup_reloc_trees(struct btrfs_root *root); | |
17d217fe | 1804 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); |
2b82032c | 1805 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
6a63209f | 1806 | void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde); |
4184ea7f CM |
1807 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
1808 | ||
6a63209f JB |
1809 | int btrfs_check_metadata_free_space(struct btrfs_root *root); |
1810 | int btrfs_check_data_free_space(struct btrfs_root *root, struct inode *inode, | |
1811 | u64 bytes); | |
1812 | void btrfs_free_reserved_data_space(struct btrfs_root *root, | |
1813 | struct inode *inode, u64 bytes); | |
1814 | void btrfs_delalloc_reserve_space(struct btrfs_root *root, struct inode *inode, | |
1815 | u64 bytes); | |
1816 | void btrfs_delalloc_free_space(struct btrfs_root *root, struct inode *inode, | |
1817 | u64 bytes); | |
dee26a9f | 1818 | /* ctree.c */ |
0b86a832 CM |
1819 | int btrfs_previous_item(struct btrfs_root *root, |
1820 | struct btrfs_path *path, u64 min_objectid, | |
1821 | int type); | |
1a40e23b ZY |
1822 | int btrfs_merge_path(struct btrfs_trans_handle *trans, |
1823 | struct btrfs_root *root, | |
1824 | struct btrfs_key *node_keys, | |
1825 | u64 *nodes, int lowest_level); | |
31840ae1 ZY |
1826 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
1827 | struct btrfs_root *root, struct btrfs_path *path, | |
1828 | struct btrfs_key *new_key); | |
925baedd CM |
1829 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
1830 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 1831 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
1832 | struct btrfs_key *key, int lowest_level, |
1833 | int cache_only, u64 min_trans); | |
1834 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 1835 | struct btrfs_key *max_key, |
3f157a2f CM |
1836 | struct btrfs_path *path, int cache_only, |
1837 | u64 min_trans); | |
5f39d397 CM |
1838 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
1839 | struct btrfs_root *root, struct extent_buffer *buf, | |
1840 | struct extent_buffer *parent, int parent_slot, | |
65b51a00 | 1841 | struct extent_buffer **cow_ret, u64 prealloc_dest); |
be20aa9d CM |
1842 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
1843 | struct btrfs_root *root, | |
1844 | struct extent_buffer *buf, | |
1845 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
6567e837 CM |
1846 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1847 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1848 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1849 | struct btrfs_root *root, | |
1850 | struct btrfs_path *path, | |
179e29e4 | 1851 | u32 new_size, int from_end); |
459931ec CM |
1852 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
1853 | struct btrfs_root *root, | |
1854 | struct btrfs_path *path, | |
1855 | struct btrfs_key *new_key, | |
1856 | unsigned long split_offset); | |
e089f05c CM |
1857 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1858 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1859 | ins_len, int cow); | |
6702ed49 | 1860 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 1861 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
1862 | int start_slot, int cache_only, u64 *last_ret, |
1863 | struct btrfs_key *progress); | |
234b63a0 | 1864 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1865 | struct btrfs_path *btrfs_alloc_path(void); |
1866 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 1867 | void btrfs_set_path_blocking(struct btrfs_path *p); |
b4ce94de CM |
1868 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
1869 | ||
85e21bac CM |
1870 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1871 | struct btrfs_path *path, int slot, int nr); | |
323ac95b CM |
1872 | int btrfs_del_leaf(struct btrfs_trans_handle *trans, |
1873 | struct btrfs_root *root, | |
1874 | struct btrfs_path *path, u64 bytenr); | |
85e21bac CM |
1875 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
1876 | struct btrfs_root *root, | |
1877 | struct btrfs_path *path) | |
1878 | { | |
1879 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
1880 | } | |
1881 | ||
e089f05c CM |
1882 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1883 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
f3465ca4 JB |
1884 | int btrfs_insert_some_items(struct btrfs_trans_handle *trans, |
1885 | struct btrfs_root *root, | |
1886 | struct btrfs_path *path, | |
1887 | struct btrfs_key *cpu_key, u32 *data_size, | |
1888 | int nr); | |
9c58309d CM |
1889 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
1890 | struct btrfs_root *root, | |
1891 | struct btrfs_path *path, | |
1892 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
1893 | ||
1894 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
1895 | struct btrfs_root *root, | |
1896 | struct btrfs_path *path, | |
1897 | struct btrfs_key *key, | |
1898 | u32 data_size) | |
1899 | { | |
1900 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
1901 | } | |
1902 | ||
234b63a0 | 1903 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 1904 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 1905 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
e089f05c | 1906 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
9f3a7427 | 1907 | *root); |
f82d02d9 YZ |
1908 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
1909 | struct btrfs_root *root, | |
1910 | struct extent_buffer *node, | |
1911 | struct extent_buffer *parent); | |
dee26a9f | 1912 | /* root-item.c */ |
ea9e8b11 CM |
1913 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
1914 | struct btrfs_path *path, | |
1915 | u64 root_id, u64 ref_id); | |
0660b5af CM |
1916 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
1917 | struct btrfs_root *tree_root, | |
1918 | u64 root_id, u8 type, u64 ref_id, | |
1919 | u64 dirid, u64 sequence, | |
1920 | const char *name, int name_len); | |
e089f05c CM |
1921 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1922 | struct btrfs_key *key); | |
1923 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1924 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1925 | *item); | |
1926 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1927 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1928 | *item); | |
1929 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1930 | btrfs_root_item *item, struct btrfs_key *key); | |
bf4ef679 CM |
1931 | int btrfs_search_root(struct btrfs_root *root, u64 search_start, |
1932 | u64 *found_objectid); | |
5ce14bbc CM |
1933 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, |
1934 | struct btrfs_root *latest_root); | |
dee26a9f | 1935 | /* dir-item.c */ |
d397712b CM |
1936 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
1937 | struct btrfs_root *root, const char *name, | |
1938 | int name_len, u64 dir, | |
aec7477b | 1939 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
1940 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1941 | struct btrfs_root *root, | |
1942 | struct btrfs_path *path, u64 dir, | |
1943 | const char *name, int name_len, | |
1944 | int mod); | |
1945 | struct btrfs_dir_item * | |
1946 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1947 | struct btrfs_root *root, | |
1948 | struct btrfs_path *path, u64 dir, | |
1949 | u64 objectid, const char *name, int name_len, | |
1950 | int mod); | |
1951 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1952 | struct btrfs_path *path, | |
7f5c1516 | 1953 | const char *name, int name_len); |
7e38180e CM |
1954 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1955 | struct btrfs_root *root, | |
1956 | struct btrfs_path *path, | |
1957 | struct btrfs_dir_item *di); | |
5103e947 JB |
1958 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
1959 | struct btrfs_root *root, const char *name, | |
1960 | u16 name_len, const void *data, u16 data_len, | |
1961 | u64 dir); | |
1962 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, | |
1963 | struct btrfs_root *root, | |
1964 | struct btrfs_path *path, u64 dir, | |
1965 | const char *name, u16 name_len, | |
1966 | int mod); | |
7b128766 JB |
1967 | |
1968 | /* orphan.c */ | |
1969 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
1970 | struct btrfs_root *root, u64 offset); | |
1971 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
1972 | struct btrfs_root *root, u64 offset); | |
1973 | ||
dee26a9f | 1974 | /* inode-map.c */ |
9f5fae2f CM |
1975 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1976 | struct btrfs_root *fs_root, | |
1977 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1978 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1979 | ||
dee26a9f | 1980 | /* inode-item.c */ |
3954401f CM |
1981 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
1982 | struct btrfs_root *root, | |
1983 | const char *name, int name_len, | |
aec7477b | 1984 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
1985 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
1986 | struct btrfs_root *root, | |
1987 | const char *name, int name_len, | |
aec7477b | 1988 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
1989 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
1990 | struct btrfs_root *root, | |
1991 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 1992 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1993 | *root, struct btrfs_path *path, |
1994 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1995 | |
1996 | /* file-item.c */ | |
459931ec CM |
1997 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
1998 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 1999 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2000 | struct bio *bio, u32 *dst); |
b18c6685 | 2001 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
2002 | struct btrfs_root *root, |
2003 | u64 objectid, u64 pos, | |
2004 | u64 disk_offset, u64 disk_num_bytes, | |
2005 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
2006 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
2007 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
2008 | struct btrfs_root *root, | |
2009 | struct btrfs_path *path, u64 objectid, | |
db94535d | 2010 | u64 bytenr, int mod); |
065631f6 | 2011 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 2012 | struct btrfs_root *root, |
e6dcd2dc | 2013 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 2014 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2015 | struct bio *bio, u64 file_start, int contig); |
c8b97818 CM |
2016 | int btrfs_csum_file_bytes(struct btrfs_root *root, struct inode *inode, |
2017 | u64 start, unsigned long len); | |
b18c6685 CM |
2018 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
2019 | struct btrfs_root *root, | |
2020 | struct btrfs_path *path, | |
d20f7043 | 2021 | u64 bytenr, int cow); |
1de037a4 CM |
2022 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
2023 | struct btrfs_root *root, struct btrfs_path *path, | |
2024 | u64 isize); | |
17d217fe YZ |
2025 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, |
2026 | u64 end, struct list_head *list); | |
39279cc3 | 2027 | /* inode.c */ |
4881ee5a CM |
2028 | |
2029 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 2030 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
2031 | #define ClearPageChecked ClearPageFsMisc |
2032 | #define SetPageChecked SetPageFsMisc | |
2033 | #define PageChecked PageFsMisc | |
2034 | #endif | |
2035 | ||
3de4586c CM |
2036 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
2037 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
2038 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
2039 | struct btrfs_root *root, | |
2040 | struct inode *dir, struct inode *inode, | |
2041 | const char *name, int name_len); | |
2042 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
2043 | struct inode *parent_inode, struct inode *inode, | |
2044 | const char *name, int name_len, int add_backref, u64 index); | |
2045 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, | |
2046 | struct btrfs_root *root, | |
2047 | struct inode *inode, u64 new_size, | |
2048 | u32 min_type); | |
2049 | ||
ea8c2819 CM |
2050 | int btrfs_start_delalloc_inodes(struct btrfs_root *root); |
2051 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end); | |
f421950f CM |
2052 | int btrfs_writepages(struct address_space *mapping, |
2053 | struct writeback_control *wbc); | |
d2fb3437 YZ |
2054 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
2055 | struct btrfs_root *new_root, struct dentry *dentry, | |
2056 | u64 new_dirid, u64 alloc_hint); | |
239b14b3 | 2057 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 2058 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 2059 | |
edbd8d4e CM |
2060 | unsigned long btrfs_force_ra(struct address_space *mapping, |
2061 | struct file_ra_state *ra, struct file *file, | |
2062 | pgoff_t offset, pgoff_t last_index); | |
9ebefb18 CM |
2063 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page); |
2064 | int btrfs_readpage(struct file *file, struct page *page); | |
39279cc3 | 2065 | void btrfs_delete_inode(struct inode *inode); |
2da98f00 | 2066 | void btrfs_put_inode(struct inode *inode); |
39279cc3 CM |
2067 | void btrfs_read_locked_inode(struct inode *inode); |
2068 | int btrfs_write_inode(struct inode *inode, int wait); | |
2069 | void btrfs_dirty_inode(struct inode *inode); | |
2070 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
2071 | void btrfs_destroy_inode(struct inode *inode); | |
2072 | int btrfs_init_cachep(void); | |
2073 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 2074 | long btrfs_ioctl_trans_end(struct file *file); |
5b21f2ed ZY |
2075 | struct inode *btrfs_ilookup(struct super_block *s, u64 objectid, |
2076 | struct btrfs_root *root, int wait); | |
39279cc3 CM |
2077 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, |
2078 | struct btrfs_root *root); | |
1a54ef8c BR |
2079 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
2080 | struct btrfs_root *root, int *is_new); | |
39279cc3 CM |
2081 | int btrfs_commit_write(struct file *file, struct page *page, |
2082 | unsigned from, unsigned to); | |
a52d9a80 CM |
2083 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
2084 | size_t page_offset, u64 start, u64 end, | |
2085 | int create); | |
2086 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
2087 | struct btrfs_root *root, | |
2088 | struct inode *inode); | |
5b21f2ed ZY |
2089 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
2090 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
2091 | void btrfs_orphan_cleanup(struct btrfs_root *root); | |
9036c102 | 2092 | int btrfs_cont_expand(struct inode *inode, loff_t size); |
f46b5a66 CH |
2093 | |
2094 | /* ioctl.c */ | |
2095 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
2096 | ||
39279cc3 | 2097 | /* file.c */ |
e02119d5 | 2098 | int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync); |
5b21f2ed ZY |
2099 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
2100 | int skip_pinned); | |
5f56406a | 2101 | int btrfs_check_file(struct btrfs_root *root, struct inode *inode); |
39279cc3 CM |
2102 | extern struct file_operations btrfs_file_operations; |
2103 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
2104 | struct btrfs_root *root, struct inode *inode, | |
00f5c795 | 2105 | u64 start, u64 end, u64 inline_limit, u64 *hint_block); |
d899e052 YZ |
2106 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
2107 | struct btrfs_root *root, | |
2108 | struct inode *inode, u64 start, u64 end); | |
6bf13c0c SW |
2109 | int btrfs_release_file(struct inode *inode, struct file *file); |
2110 | ||
6702ed49 CM |
2111 | /* tree-defrag.c */ |
2112 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
2113 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
2114 | |
2115 | /* sysfs.c */ | |
2116 | int btrfs_init_sysfs(void); | |
2117 | void btrfs_exit_sysfs(void); | |
2118 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
2119 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
2120 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
2121 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
2122 | ||
5103e947 JB |
2123 | /* xattr.c */ |
2124 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 2125 | |
edbd8d4e CM |
2126 | /* super.c */ |
2127 | u64 btrfs_parse_size(char *str); | |
edf24abe | 2128 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 2129 | int btrfs_sync_fs(struct super_block *sb, int wait); |
33268eaf JB |
2130 | |
2131 | /* acl.c */ | |
2132 | int btrfs_check_acl(struct inode *inode, int mask); | |
2133 | int btrfs_init_acl(struct inode *inode, struct inode *dir); | |
2134 | int btrfs_acl_chmod(struct inode *inode); | |
0f9dd46c JB |
2135 | |
2136 | /* free-space-cache.c */ | |
2137 | int btrfs_add_free_space(struct btrfs_block_group_cache *block_group, | |
2138 | u64 bytenr, u64 size); | |
25179201 JB |
2139 | int btrfs_add_free_space_lock(struct btrfs_block_group_cache *block_group, |
2140 | u64 offset, u64 bytes); | |
0f9dd46c JB |
2141 | int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group, |
2142 | u64 bytenr, u64 size); | |
25179201 JB |
2143 | int btrfs_remove_free_space_lock(struct btrfs_block_group_cache *block_group, |
2144 | u64 offset, u64 bytes); | |
0f9dd46c JB |
2145 | void btrfs_remove_free_space_cache(struct btrfs_block_group_cache |
2146 | *block_group); | |
2147 | struct btrfs_free_space *btrfs_find_free_space(struct btrfs_block_group_cache | |
2148 | *block_group, u64 offset, | |
2149 | u64 bytes); | |
2150 | void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group, | |
2151 | u64 bytes); | |
2152 | u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group); | |
eb60ceac | 2153 | #endif |