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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 | |
09fde3c9 | 42 | #define BTRFS_MAGIC "_BCRfS_M" |
eb60ceac | 43 | |
33268eaf JB |
44 | #define BTRFS_ACL_NOT_CACHED ((void *)-1) |
45 | ||
6dddcbeb CM |
46 | #ifdef CONFIG_LOCKDEP |
47 | # define BTRFS_MAX_LEVEL 7 | |
48 | #else | |
49 | # define BTRFS_MAX_LEVEL 8 | |
50 | #endif | |
0b86a832 CM |
51 | |
52 | /* holds pointers to all of the tree roots */ | |
6407bf6d | 53 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
54 | |
55 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 56 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 57 | |
0b86a832 CM |
58 | /* |
59 | * chunk tree stores translations from logical -> physical block numbering | |
60 | * the super block points to the chunk tree | |
61 | */ | |
e085def2 | 62 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
63 | |
64 | /* | |
65 | * stores information about which areas of a given device are in use. | |
66 | * one per device. The tree of tree roots points to the device tree | |
67 | */ | |
e085def2 CM |
68 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
69 | ||
70 | /* one per subvolume, storing files and directories */ | |
71 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
72 | ||
73 | /* directory objectid inside the root tree */ | |
74 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 75 | |
7b128766 JB |
76 | /* orhpan objectid for tracking unlinked/truncated files */ |
77 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
78 | ||
e02119d5 CM |
79 | /* does write ahead logging to speed up fsyncs */ |
80 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
81 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
82 | ||
e4657689 ZY |
83 | /* for space balancing */ |
84 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
85 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
86 | ||
31840ae1 ZY |
87 | /* dummy objectid represents multiple objectids */ |
88 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
89 | ||
0b86a832 | 90 | /* |
6527cdbe | 91 | * All files have objectids in this range. |
0b86a832 | 92 | */ |
f6dbff55 | 93 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 94 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 95 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 96 | |
0b86a832 CM |
97 | |
98 | /* | |
99 | * the device items go into the chunk tree. The key is in the form | |
100 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
101 | */ | |
102 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
103 | ||
e20d96d6 CM |
104 | /* |
105 | * we can actually store much bigger names, but lets not confuse the rest | |
106 | * of linux | |
107 | */ | |
108 | #define BTRFS_NAME_LEN 255 | |
109 | ||
f254e52c CM |
110 | /* 32 bytes in various csum fields */ |
111 | #define BTRFS_CSUM_SIZE 32 | |
509659cd CM |
112 | /* four bytes for CRC32 */ |
113 | #define BTRFS_CRC32_SIZE 4 | |
3954401f | 114 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 115 | |
fabb5681 CM |
116 | #define BTRFS_FT_UNKNOWN 0 |
117 | #define BTRFS_FT_REG_FILE 1 | |
118 | #define BTRFS_FT_DIR 2 | |
119 | #define BTRFS_FT_CHRDEV 3 | |
120 | #define BTRFS_FT_BLKDEV 4 | |
121 | #define BTRFS_FT_FIFO 5 | |
122 | #define BTRFS_FT_SOCK 6 | |
123 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
124 | #define BTRFS_FT_XATTR 8 |
125 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 126 | |
fec577fb CM |
127 | /* |
128 | * the key defines the order in the tree, and so it also defines (optimal) | |
129 | * block layout. objectid corresonds to the inode number. The flags | |
130 | * tells us things about the object, and is a kind of stream selector. | |
131 | * so for a given inode, keys with flags of 1 might refer to the inode | |
132 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
133 | * may point to extents. | |
134 | * | |
135 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
136 | * |
137 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
138 | * in cpu native order. Otherwise they are identical and their sizes | |
139 | * should be the same (ie both packed) | |
fec577fb | 140 | */ |
e2fa7227 CM |
141 | struct btrfs_disk_key { |
142 | __le64 objectid; | |
5f39d397 | 143 | u8 type; |
70b2befd | 144 | __le64 offset; |
e2fa7227 CM |
145 | } __attribute__ ((__packed__)); |
146 | ||
147 | struct btrfs_key { | |
eb60ceac | 148 | u64 objectid; |
5f39d397 | 149 | u8 type; |
70b2befd | 150 | u64 offset; |
eb60ceac CM |
151 | } __attribute__ ((__packed__)); |
152 | ||
0b86a832 CM |
153 | struct btrfs_mapping_tree { |
154 | struct extent_map_tree map_tree; | |
155 | }; | |
156 | ||
e17cade2 | 157 | #define BTRFS_UUID_SIZE 16 |
0b86a832 CM |
158 | struct btrfs_dev_item { |
159 | /* the internal btrfs device id */ | |
160 | __le64 devid; | |
161 | ||
162 | /* size of the device */ | |
163 | __le64 total_bytes; | |
164 | ||
165 | /* bytes used */ | |
166 | __le64 bytes_used; | |
167 | ||
168 | /* optimal io alignment for this device */ | |
169 | __le32 io_align; | |
170 | ||
171 | /* optimal io width for this device */ | |
172 | __le32 io_width; | |
173 | ||
174 | /* minimal io size for this device */ | |
175 | __le32 sector_size; | |
176 | ||
0b86a832 CM |
177 | /* type and info about this device */ |
178 | __le64 type; | |
179 | ||
e17cade2 CM |
180 | /* grouping information for allocation decisions */ |
181 | __le32 dev_group; | |
182 | ||
183 | /* seek speed 0-100 where 100 is fastest */ | |
184 | u8 seek_speed; | |
185 | ||
186 | /* bandwidth 0-100 where 100 is fastest */ | |
187 | u8 bandwidth; | |
188 | ||
0d81ba5d | 189 | /* btrfs generated uuid for this device */ |
e17cade2 | 190 | u8 uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
191 | } __attribute__ ((__packed__)); |
192 | ||
193 | struct btrfs_stripe { | |
194 | __le64 devid; | |
195 | __le64 offset; | |
e17cade2 | 196 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
197 | } __attribute__ ((__packed__)); |
198 | ||
199 | struct btrfs_chunk { | |
e17cade2 CM |
200 | /* size of this chunk in bytes */ |
201 | __le64 length; | |
202 | ||
203 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 204 | __le64 owner; |
e17cade2 | 205 | |
0b86a832 CM |
206 | __le64 stripe_len; |
207 | __le64 type; | |
208 | ||
209 | /* optimal io alignment for this chunk */ | |
210 | __le32 io_align; | |
211 | ||
212 | /* optimal io width for this chunk */ | |
213 | __le32 io_width; | |
214 | ||
215 | /* minimal io size for this chunk */ | |
216 | __le32 sector_size; | |
217 | ||
218 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
219 | * item in the btree | |
220 | */ | |
221 | __le16 num_stripes; | |
321aecc6 CM |
222 | |
223 | /* sub stripes only matter for raid10 */ | |
224 | __le16 sub_stripes; | |
0b86a832 CM |
225 | struct btrfs_stripe stripe; |
226 | /* additional stripes go here */ | |
227 | } __attribute__ ((__packed__)); | |
228 | ||
229 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) | |
230 | { | |
231 | BUG_ON(num_stripes == 0); | |
232 | return sizeof(struct btrfs_chunk) + | |
233 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
234 | } | |
235 | ||
5f39d397 | 236 | #define BTRFS_FSID_SIZE 16 |
63b10fc4 CM |
237 | #define BTRFS_HEADER_FLAG_WRITTEN (1 << 0) |
238 | ||
fec577fb CM |
239 | /* |
240 | * every tree block (leaf or node) starts with this header. | |
241 | */ | |
bb492bb0 | 242 | struct btrfs_header { |
e17cade2 | 243 | /* these first four must match the super block */ |
f254e52c | 244 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 245 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 246 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 247 | __le64 flags; |
e17cade2 CM |
248 | |
249 | /* allowed to be different from the super from here on down */ | |
250 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 251 | __le64 generation; |
4d775673 | 252 | __le64 owner; |
5f39d397 | 253 | __le32 nritems; |
9a6f11ed | 254 | u8 level; |
eb60ceac CM |
255 | } __attribute__ ((__packed__)); |
256 | ||
5f39d397 | 257 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
123abc88 | 258 | sizeof(struct btrfs_header)) / \ |
74493f7a | 259 | sizeof(struct btrfs_key_ptr)) |
123abc88 | 260 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 261 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
262 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
263 | sizeof(struct btrfs_item) - \ | |
264 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 265 | |
0b86a832 CM |
266 | |
267 | /* | |
268 | * this is a very generous portion of the super block, giving us | |
269 | * room to translate 14 chunks with 3 stripes each. | |
270 | */ | |
271 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 272 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 273 | |
fec577fb CM |
274 | /* |
275 | * the super block basically lists the main trees of the FS | |
276 | * it currently lacks any block count etc etc | |
277 | */ | |
234b63a0 | 278 | struct btrfs_super_block { |
f254e52c | 279 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 280 | /* the first 4 fields must match struct btrfs_header */ |
3768f368 | 281 | u8 fsid[16]; /* FS specific uuid */ |
db94535d | 282 | __le64 bytenr; /* this block number */ |
63b10fc4 | 283 | __le64 flags; |
e17cade2 CM |
284 | |
285 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 286 | __le64 magic; |
3768f368 CM |
287 | __le64 generation; |
288 | __le64 root; | |
0b86a832 | 289 | __le64 chunk_root; |
e02119d5 | 290 | __le64 log_root; |
db94535d CM |
291 | __le64 total_bytes; |
292 | __le64 bytes_used; | |
2e635a27 | 293 | __le64 root_dir_objectid; |
8a4b83cc | 294 | __le64 num_devices; |
5f39d397 CM |
295 | __le32 sectorsize; |
296 | __le32 nodesize; | |
297 | __le32 leafsize; | |
87ee04eb | 298 | __le32 stripesize; |
0b86a832 | 299 | __le32 sys_chunk_array_size; |
84234f3a | 300 | __le64 chunk_root_generation; |
db94535d | 301 | u8 root_level; |
0b86a832 | 302 | u8 chunk_root_level; |
e02119d5 | 303 | u8 log_root_level; |
0d81ba5d | 304 | struct btrfs_dev_item dev_item; |
7ae9c09d | 305 | char label[BTRFS_LABEL_SIZE]; |
0b86a832 | 306 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
cfaa7295 CM |
307 | } __attribute__ ((__packed__)); |
308 | ||
fec577fb | 309 | /* |
62e2749e | 310 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
311 | * the item in the leaf (relative to the start of the data area) |
312 | */ | |
0783fcfc | 313 | struct btrfs_item { |
e2fa7227 | 314 | struct btrfs_disk_key key; |
123abc88 | 315 | __le32 offset; |
5f39d397 | 316 | __le32 size; |
eb60ceac CM |
317 | } __attribute__ ((__packed__)); |
318 | ||
fec577fb CM |
319 | /* |
320 | * leaves have an item area and a data area: | |
321 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
322 | * | |
323 | * The data is separate from the items to get the keys closer together | |
324 | * during searches. | |
325 | */ | |
234b63a0 | 326 | struct btrfs_leaf { |
bb492bb0 | 327 | struct btrfs_header header; |
123abc88 | 328 | struct btrfs_item items[]; |
eb60ceac CM |
329 | } __attribute__ ((__packed__)); |
330 | ||
fec577fb CM |
331 | /* |
332 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
333 | * other blocks | |
334 | */ | |
123abc88 CM |
335 | struct btrfs_key_ptr { |
336 | struct btrfs_disk_key key; | |
337 | __le64 blockptr; | |
74493f7a | 338 | __le64 generation; |
123abc88 CM |
339 | } __attribute__ ((__packed__)); |
340 | ||
234b63a0 | 341 | struct btrfs_node { |
bb492bb0 | 342 | struct btrfs_header header; |
123abc88 | 343 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
344 | } __attribute__ ((__packed__)); |
345 | ||
fec577fb | 346 | /* |
234b63a0 CM |
347 | * btrfs_paths remember the path taken from the root down to the leaf. |
348 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
349 | * to any other levels that are present. |
350 | * | |
351 | * The slots array records the index of the item or block pointer | |
352 | * used while walking the tree. | |
353 | */ | |
234b63a0 | 354 | struct btrfs_path { |
5f39d397 | 355 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 356 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
357 | /* if there is real range locking, this locks field will change */ |
358 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 359 | int reada; |
925baedd CM |
360 | /* keep some upper locks as we walk down */ |
361 | int keep_locks; | |
5cd57b2c | 362 | int skip_locking; |
6702ed49 | 363 | int lowest_level; |
eb60ceac | 364 | }; |
5de08d7d | 365 | |
62e2749e CM |
366 | /* |
367 | * items in the extent btree are used to record the objectid of the | |
368 | * owner of the block and the number of references | |
369 | */ | |
370 | struct btrfs_extent_item { | |
371 | __le32 refs; | |
74493f7a CM |
372 | } __attribute__ ((__packed__)); |
373 | ||
374 | struct btrfs_extent_ref { | |
375 | __le64 root; | |
376 | __le64 generation; | |
377 | __le64 objectid; | |
31840ae1 | 378 | __le32 num_refs; |
62e2749e CM |
379 | } __attribute__ ((__packed__)); |
380 | ||
0b86a832 CM |
381 | /* dev extents record free space on individual devices. The owner |
382 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 383 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
384 | */ |
385 | struct btrfs_dev_extent { | |
e17cade2 CM |
386 | __le64 chunk_tree; |
387 | __le64 chunk_objectid; | |
388 | __le64 chunk_offset; | |
0b86a832 | 389 | __le64 length; |
e17cade2 | 390 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
391 | } __attribute__ ((__packed__)); |
392 | ||
3954401f | 393 | struct btrfs_inode_ref { |
aec7477b | 394 | __le64 index; |
3954401f CM |
395 | __le16 name_len; |
396 | /* name goes here */ | |
397 | } __attribute__ ((__packed__)); | |
398 | ||
0b86a832 | 399 | struct btrfs_timespec { |
f254e52c | 400 | __le64 sec; |
1e1d2701 CM |
401 | __le32 nsec; |
402 | } __attribute__ ((__packed__)); | |
403 | ||
c8b97818 CM |
404 | typedef enum { |
405 | BTRFS_COMPRESS_NONE = 0, | |
406 | BTRFS_COMPRESS_ZLIB = 1, | |
407 | BTRFS_COMPRESS_LAST = 2, | |
408 | } btrfs_compression_type; | |
409 | ||
410 | /* we don't understand any encryption methods right now */ | |
411 | typedef enum { | |
412 | BTRFS_ENCRYPTION_NONE = 0, | |
413 | BTRFS_ENCRYPTION_LAST = 1, | |
414 | } btrfs_encryption_type; | |
415 | ||
1e1d2701 | 416 | struct btrfs_inode_item { |
e02119d5 | 417 | /* nfs style generation number */ |
1e1d2701 | 418 | __le64 generation; |
e02119d5 CM |
419 | /* transid that last touched this inode */ |
420 | __le64 transid; | |
1e1d2701 | 421 | __le64 size; |
a76a3cd4 | 422 | __le64 nbytes; |
31f3c99b | 423 | __le64 block_group; |
1e1d2701 CM |
424 | __le32 nlink; |
425 | __le32 uid; | |
426 | __le32 gid; | |
427 | __le32 mode; | |
0b86a832 | 428 | __le64 rdev; |
1e1d2701 CM |
429 | __le16 flags; |
430 | __le16 compat_flags; | |
c8b97818 | 431 | |
0b86a832 CM |
432 | struct btrfs_timespec atime; |
433 | struct btrfs_timespec ctime; | |
434 | struct btrfs_timespec mtime; | |
435 | struct btrfs_timespec otime; | |
1e1d2701 CM |
436 | } __attribute__ ((__packed__)); |
437 | ||
e02119d5 CM |
438 | struct btrfs_dir_log_item { |
439 | __le64 end; | |
440 | } __attribute__ ((__packed__)); | |
441 | ||
62e2749e | 442 | struct btrfs_dir_item { |
d6e4a428 | 443 | struct btrfs_disk_key location; |
e02119d5 | 444 | __le64 transid; |
5103e947 | 445 | __le16 data_len; |
a8a2ee0c | 446 | __le16 name_len; |
62e2749e CM |
447 | u8 type; |
448 | } __attribute__ ((__packed__)); | |
449 | ||
450 | struct btrfs_root_item { | |
d6e4a428 | 451 | struct btrfs_inode_item inode; |
84234f3a | 452 | __le64 generation; |
d6e4a428 | 453 | __le64 root_dirid; |
db94535d CM |
454 | __le64 bytenr; |
455 | __le64 byte_limit; | |
456 | __le64 bytes_used; | |
5eda7b5e | 457 | __le32 flags; |
62e2749e | 458 | __le32 refs; |
5eda7b5e CM |
459 | struct btrfs_disk_key drop_progress; |
460 | u8 drop_level; | |
db94535d | 461 | u8 level; |
9f5fae2f | 462 | } __attribute__ ((__packed__)); |
62e2749e | 463 | |
236454df CM |
464 | #define BTRFS_FILE_EXTENT_REG 0 |
465 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
466 | ||
9f5fae2f | 467 | struct btrfs_file_extent_item { |
c8b97818 CM |
468 | /* |
469 | * transaction id that created this extent | |
470 | */ | |
71951f35 | 471 | __le64 generation; |
c8b97818 CM |
472 | /* |
473 | * max number of bytes to hold this extent in ram | |
474 | * when we split a compressed extent we can't know how big | |
475 | * each of the resulting pieces will be. So, this is | |
476 | * an upper limit on the size of the extent in ram instead of | |
477 | * an exact limit. | |
478 | */ | |
479 | __le64 ram_bytes; | |
480 | ||
481 | /* | |
482 | * 32 bits for the various ways we might encode the data, | |
483 | * including compression and encryption. If any of these | |
484 | * are set to something a given disk format doesn't understand | |
485 | * it is treated like an incompat flag for reading and writing, | |
486 | * but not for stat. | |
487 | */ | |
488 | u8 compression; | |
489 | u8 encryption; | |
490 | __le16 other_encoding; /* spare for later use */ | |
491 | ||
492 | /* are we inline data or a real extent? */ | |
236454df | 493 | u8 type; |
c8b97818 | 494 | |
9f5fae2f CM |
495 | /* |
496 | * disk space consumed by the extent, checksum blocks are included | |
497 | * in these numbers | |
498 | */ | |
db94535d CM |
499 | __le64 disk_bytenr; |
500 | __le64 disk_num_bytes; | |
9f5fae2f | 501 | /* |
dee26a9f | 502 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
503 | * this extent record is for. This allows a file extent to point |
504 | * into the middle of an existing extent on disk, sharing it | |
505 | * between two snapshots (useful if some bytes in the middle of the | |
506 | * extent have changed | |
507 | */ | |
508 | __le64 offset; | |
509 | /* | |
c8b97818 CM |
510 | * the logical number of file blocks (no csums included). This |
511 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 512 | */ |
db94535d | 513 | __le64 num_bytes; |
c8b97818 | 514 | |
9f5fae2f CM |
515 | } __attribute__ ((__packed__)); |
516 | ||
f254e52c | 517 | struct btrfs_csum_item { |
509659cd | 518 | u8 csum; |
f254e52c CM |
519 | } __attribute__ ((__packed__)); |
520 | ||
0b86a832 CM |
521 | /* different types of block groups (and chunks) */ |
522 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
523 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
524 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 525 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 526 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 527 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 528 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
1e2677e0 | 529 | |
9078a3e1 CM |
530 | struct btrfs_block_group_item { |
531 | __le64 used; | |
0b86a832 CM |
532 | __le64 chunk_objectid; |
533 | __le64 flags; | |
9078a3e1 CM |
534 | } __attribute__ ((__packed__)); |
535 | ||
6324fbf3 CM |
536 | struct btrfs_space_info { |
537 | u64 flags; | |
538 | u64 total_bytes; | |
539 | u64 bytes_used; | |
540 | u64 bytes_pinned; | |
e8569813 | 541 | u64 bytes_reserved; |
6324fbf3 | 542 | int full; |
0ef3e66b | 543 | int force_alloc; |
6324fbf3 | 544 | struct list_head list; |
0f9dd46c JB |
545 | |
546 | /* for block groups in our same type */ | |
547 | struct list_head block_groups; | |
548 | spinlock_t lock; | |
80eb234a | 549 | struct rw_semaphore groups_sem; |
0f9dd46c JB |
550 | }; |
551 | ||
552 | struct btrfs_free_space { | |
553 | struct rb_node bytes_index; | |
554 | struct rb_node offset_index; | |
555 | u64 offset; | |
556 | u64 bytes; | |
6324fbf3 CM |
557 | }; |
558 | ||
9078a3e1 CM |
559 | struct btrfs_block_group_cache { |
560 | struct btrfs_key key; | |
561 | struct btrfs_block_group_item item; | |
c286ac48 | 562 | spinlock_t lock; |
25179201 | 563 | struct mutex alloc_mutex; |
324ae4df | 564 | u64 pinned; |
e8569813 | 565 | u64 reserved; |
0b86a832 CM |
566 | u64 flags; |
567 | int cached; | |
8f18cf13 | 568 | int ro; |
0f9dd46c JB |
569 | int dirty; |
570 | ||
571 | struct btrfs_space_info *space_info; | |
572 | ||
573 | /* free space cache stuff */ | |
574 | struct rb_root free_space_bytes; | |
575 | struct rb_root free_space_offset; | |
576 | ||
577 | /* block group cache stuff */ | |
578 | struct rb_node cache_node; | |
579 | ||
580 | /* for block groups in the same raid type */ | |
581 | struct list_head list; | |
9078a3e1 | 582 | }; |
0b86a832 | 583 | |
e4657689 ZY |
584 | struct btrfs_leaf_ref_tree { |
585 | struct rb_root root; | |
586 | struct list_head list; | |
587 | spinlock_t lock; | |
588 | }; | |
589 | ||
0b86a832 | 590 | struct btrfs_device; |
8a4b83cc | 591 | struct btrfs_fs_devices; |
9f5fae2f | 592 | struct btrfs_fs_info { |
5f39d397 | 593 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 594 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
595 | struct btrfs_root *extent_root; |
596 | struct btrfs_root *tree_root; | |
0b86a832 CM |
597 | struct btrfs_root *chunk_root; |
598 | struct btrfs_root *dev_root; | |
e02119d5 CM |
599 | |
600 | /* the log root tree is a directory of all the other log roots */ | |
601 | struct btrfs_root *log_root_tree; | |
0f7d52f4 | 602 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 603 | |
0f9dd46c JB |
604 | /* block group cache stuff */ |
605 | spinlock_t block_group_cache_lock; | |
606 | struct rb_root block_group_cache_tree; | |
607 | ||
d1310b2e CM |
608 | struct extent_io_tree pinned_extents; |
609 | struct extent_io_tree pending_del; | |
610 | struct extent_io_tree extent_ins; | |
1a5bc167 | 611 | |
0b86a832 CM |
612 | /* logical->physical extent mapping */ |
613 | struct btrfs_mapping_tree mapping_tree; | |
614 | ||
293ffd5f | 615 | u64 generation; |
15ee9bc7 | 616 | u64 last_trans_committed; |
e02119d5 | 617 | u64 last_trans_new_blockgroup; |
9ca9ee09 | 618 | u64 open_ioctl_trans; |
b6cda9bc | 619 | unsigned long mount_opt; |
c59f8951 | 620 | u64 max_extent; |
6f568d35 | 621 | u64 max_inline; |
8f662a76 | 622 | u64 alloc_start; |
79154b1b | 623 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 624 | wait_queue_head_t transaction_throttle; |
f9295749 | 625 | wait_queue_head_t transaction_wait; |
4854ddd0 | 626 | wait_queue_head_t async_submit_wait; |
e02119d5 CM |
627 | |
628 | wait_queue_head_t tree_log_wait; | |
629 | ||
4b52dff6 | 630 | struct btrfs_super_block super_copy; |
a061fc8d | 631 | struct btrfs_super_block super_for_commit; |
0b86a832 | 632 | struct block_device *__bdev; |
e20d96d6 | 633 | struct super_block *sb; |
d98237b3 | 634 | struct inode *btree_inode; |
04160088 | 635 | struct backing_dev_info bdi; |
19c00ddc | 636 | spinlock_t hash_lock; |
79154b1b | 637 | struct mutex trans_mutex; |
e02119d5 | 638 | struct mutex tree_log_mutex; |
a74a4b97 CM |
639 | struct mutex transaction_kthread_mutex; |
640 | struct mutex cleaner_mutex; | |
25179201 JB |
641 | struct mutex extent_ins_mutex; |
642 | struct mutex pinned_mutex; | |
925baedd | 643 | struct mutex chunk_mutex; |
a2135011 | 644 | struct mutex drop_mutex; |
7d9eb12c | 645 | struct mutex volume_mutex; |
1a40e23b | 646 | struct mutex tree_reloc_mutex; |
8fd17795 | 647 | struct list_head trans_list; |
19c00ddc | 648 | struct list_head hashers; |
facda1e7 | 649 | struct list_head dead_roots; |
e02119d5 | 650 | |
cb03c743 | 651 | atomic_t nr_async_submits; |
8c8bee1d | 652 | atomic_t async_submit_draining; |
0986fe9e | 653 | atomic_t nr_async_bios; |
e02119d5 CM |
654 | atomic_t tree_log_writers; |
655 | atomic_t tree_log_commit; | |
656 | unsigned long tree_log_batch; | |
657 | u64 tree_log_transid; | |
ce9adaa5 | 658 | |
3eaa2885 CM |
659 | /* |
660 | * this is used by the balancing code to wait for all the pending | |
661 | * ordered extents | |
662 | */ | |
663 | spinlock_t ordered_extent_lock; | |
664 | struct list_head ordered_extents; | |
ea8c2819 | 665 | struct list_head delalloc_inodes; |
3eaa2885 | 666 | |
8b712842 CM |
667 | /* |
668 | * there is a pool of worker threads for checksumming during writes | |
669 | * and a pool for checksumming after reads. This is because readers | |
670 | * can run with FS locks held, and the writers may be waiting for | |
671 | * those locks. We don't want ordering in the pending list to cause | |
672 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
673 | * |
674 | * A third pool does submit_bio to avoid deadlocking with the other | |
675 | * two | |
8b712842 CM |
676 | */ |
677 | struct btrfs_workers workers; | |
678 | struct btrfs_workers endio_workers; | |
e6dcd2dc | 679 | struct btrfs_workers endio_write_workers; |
1cc127b5 | 680 | struct btrfs_workers submit_workers; |
247e743c CM |
681 | /* |
682 | * fixup workers take dirty pages that didn't properly go through | |
683 | * the cow mechanism and make them safe to write. It happens | |
684 | * for the sys_munmap function call path | |
685 | */ | |
686 | struct btrfs_workers fixup_workers; | |
a74a4b97 CM |
687 | struct task_struct *transaction_kthread; |
688 | struct task_struct *cleaner_kthread; | |
4543df7e | 689 | int thread_pool_size; |
8b712842 | 690 | |
1a40e23b | 691 | /* tree relocation relocated fields */ |
1a40e23b ZY |
692 | struct list_head dead_reloc_roots; |
693 | struct btrfs_leaf_ref_tree reloc_ref_tree; | |
e4657689 ZY |
694 | struct btrfs_leaf_ref_tree shared_ref_tree; |
695 | ||
58176a96 JB |
696 | struct kobject super_kobj; |
697 | struct completion kobj_unregister; | |
e66f709b | 698 | int do_barriers; |
facda1e7 | 699 | int closing; |
e02119d5 | 700 | int log_root_recovering; |
a2135011 | 701 | atomic_t throttles; |
ab78c84d | 702 | atomic_t throttle_gen; |
9f5fae2f | 703 | |
324ae4df | 704 | u64 total_pinned; |
0b86a832 CM |
705 | struct list_head dirty_cowonly_roots; |
706 | ||
8a4b83cc | 707 | struct btrfs_fs_devices *fs_devices; |
6324fbf3 | 708 | struct list_head space_info; |
1832a6d5 | 709 | spinlock_t delalloc_lock; |
cee36a03 | 710 | spinlock_t new_trans_lock; |
1832a6d5 | 711 | u64 delalloc_bytes; |
e18e4809 | 712 | u64 last_alloc; |
4529ba49 | 713 | u64 last_data_alloc; |
d18a2c44 | 714 | |
31153d81 YZ |
715 | spinlock_t ref_cache_lock; |
716 | u64 total_ref_cache_size; | |
31153d81 | 717 | |
d18a2c44 CM |
718 | u64 avail_data_alloc_bits; |
719 | u64 avail_metadata_alloc_bits; | |
720 | u64 avail_system_alloc_bits; | |
721 | u64 data_alloc_profile; | |
722 | u64 metadata_alloc_profile; | |
723 | u64 system_alloc_profile; | |
788f20eb CM |
724 | |
725 | void *bdev_holder; | |
324ae4df | 726 | }; |
0b86a832 | 727 | |
9f5fae2f CM |
728 | /* |
729 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 730 | * and for the extent tree extent_root root. |
9f5fae2f | 731 | */ |
f321e491 | 732 | struct btrfs_dirty_root; |
9f5fae2f | 733 | struct btrfs_root { |
5f39d397 | 734 | struct extent_buffer *node; |
925baedd CM |
735 | |
736 | /* the node lock is held while changing the node pointer */ | |
737 | spinlock_t node_lock; | |
738 | ||
5f39d397 | 739 | struct extent_buffer *commit_root; |
31153d81 | 740 | struct btrfs_leaf_ref_tree *ref_tree; |
017e5369 | 741 | struct btrfs_leaf_ref_tree ref_tree_struct; |
f321e491 | 742 | struct btrfs_dirty_root *dirty_root; |
e02119d5 | 743 | struct btrfs_root *log_root; |
1a40e23b | 744 | struct btrfs_root *reloc_root; |
31153d81 | 745 | |
62e2749e CM |
746 | struct btrfs_root_item root_item; |
747 | struct btrfs_key root_key; | |
9f5fae2f | 748 | struct btrfs_fs_info *fs_info; |
0f7d52f4 | 749 | struct inode *inode; |
d0c803c4 CM |
750 | struct extent_io_tree dirty_log_pages; |
751 | ||
58176a96 JB |
752 | struct kobject root_kobj; |
753 | struct completion kobj_unregister; | |
a2135011 | 754 | struct mutex objectid_mutex; |
e02119d5 | 755 | struct mutex log_mutex; |
ea8c2819 | 756 | |
0f7d52f4 CM |
757 | u64 objectid; |
758 | u64 last_trans; | |
5f39d397 CM |
759 | |
760 | /* data allocations are done in sectorsize units */ | |
761 | u32 sectorsize; | |
762 | ||
763 | /* node allocations are done in nodesize units */ | |
764 | u32 nodesize; | |
765 | ||
766 | /* leaf allocations are done in leafsize units */ | |
767 | u32 leafsize; | |
768 | ||
87ee04eb CM |
769 | u32 stripesize; |
770 | ||
9f5fae2f | 771 | u32 type; |
1b05da2e CM |
772 | u64 highest_inode; |
773 | u64 last_inode_alloc; | |
9f3a7427 | 774 | int ref_cows; |
0b86a832 | 775 | int track_dirty; |
3f157a2f | 776 | u64 defrag_trans_start; |
6702ed49 | 777 | struct btrfs_key defrag_progress; |
0ef3e66b | 778 | struct btrfs_key defrag_max; |
6702ed49 CM |
779 | int defrag_running; |
780 | int defrag_level; | |
58176a96 | 781 | char *name; |
4313b399 | 782 | int in_sysfs; |
0b86a832 CM |
783 | |
784 | /* the dirty list is only used by non-reference counted roots */ | |
785 | struct list_head dirty_list; | |
7b128766 | 786 | |
bcc63abb Y |
787 | spinlock_t list_lock; |
788 | struct list_head dead_list; | |
7b128766 | 789 | struct list_head orphan_list; |
62e2749e CM |
790 | }; |
791 | ||
1e1d2701 | 792 | /* |
0b86a832 | 793 | |
1e1d2701 CM |
794 | * inode items have the data typically returned from stat and store other |
795 | * info about object characteristics. There is one for every file and dir in | |
796 | * the FS | |
797 | */ | |
9078a3e1 | 798 | #define BTRFS_INODE_ITEM_KEY 1 |
3954401f CM |
799 | #define BTRFS_INODE_REF_KEY 2 |
800 | #define BTRFS_XATTR_ITEM_KEY 8 | |
7b128766 | 801 | #define BTRFS_ORPHAN_ITEM_KEY 9 |
9078a3e1 | 802 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
803 | |
804 | /* | |
805 | * dir items are the name -> inode pointers in a directory. There is one | |
806 | * for every name in a directory. | |
807 | */ | |
e02119d5 CM |
808 | #define BTRFS_DIR_LOG_ITEM_KEY 14 |
809 | #define BTRFS_DIR_LOG_INDEX_KEY 15 | |
9078a3e1 CM |
810 | #define BTRFS_DIR_ITEM_KEY 16 |
811 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 812 | /* |
9078a3e1 | 813 | * extent data is for file data |
1e1d2701 | 814 | */ |
9078a3e1 | 815 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
816 | /* |
817 | * csum items have the checksums for data in the extents | |
818 | */ | |
9078a3e1 CM |
819 | #define BTRFS_CSUM_ITEM_KEY 19 |
820 | ||
e02119d5 CM |
821 | |
822 | /* reserve 21-31 for other file/dir stuff */ | |
f254e52c | 823 | |
1e1d2701 CM |
824 | /* |
825 | * root items point to tree roots. There are typically in the root | |
826 | * tree used by the super block to find all the other trees | |
827 | */ | |
9078a3e1 | 828 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
829 | /* |
830 | * extent items are in the extent map tree. These record which blocks | |
831 | * are used, and how many references there are to each block | |
832 | */ | |
9078a3e1 | 833 | #define BTRFS_EXTENT_ITEM_KEY 33 |
74493f7a | 834 | #define BTRFS_EXTENT_REF_KEY 34 |
9078a3e1 CM |
835 | |
836 | /* | |
837 | * block groups give us hints into the extent allocation trees. Which | |
838 | * blocks are free etc etc | |
839 | */ | |
74493f7a | 840 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 50 |
9f5fae2f | 841 | |
0b86a832 CM |
842 | #define BTRFS_DEV_EXTENT_KEY 75 |
843 | #define BTRFS_DEV_ITEM_KEY 76 | |
844 | #define BTRFS_CHUNK_ITEM_KEY 77 | |
845 | ||
1e1d2701 CM |
846 | /* |
847 | * string items are for debugging. They just store a short string of | |
848 | * data in the FS | |
849 | */ | |
9078a3e1 CM |
850 | #define BTRFS_STRING_ITEM_KEY 253 |
851 | ||
21ad10cf CM |
852 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
853 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
854 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 855 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 856 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 857 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
b6cda9bc CM |
858 | |
859 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
860 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
861 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
862 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
863 | /* |
864 | * Inode flags | |
865 | */ | |
fdebe2bd Y |
866 | #define BTRFS_INODE_NODATASUM (1 << 0) |
867 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
868 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 869 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
b98b6767 Y |
870 | #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \ |
871 | ~BTRFS_INODE_##flag) | |
872 | #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \ | |
873 | BTRFS_INODE_##flag) | |
874 | #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \ | |
875 | BTRFS_INODE_##flag) | |
5f39d397 CM |
876 | /* some macros to generate set/get funcs for the struct fields. This |
877 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
878 | * one for u8: | |
879 | */ | |
880 | #define le8_to_cpu(v) (v) | |
881 | #define cpu_to_le8(v) (v) | |
882 | #define __le8 u8 | |
883 | ||
884 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
885 | read_extent_buffer(eb, (char *)(result), \ | |
886 | ((unsigned long)(ptr)) + \ | |
887 | offsetof(type, member), \ | |
888 | sizeof(((type *)0)->member))) | |
889 | ||
890 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
891 | write_extent_buffer(eb, (char *)(result), \ | |
892 | ((unsigned long)(ptr)) + \ | |
893 | offsetof(type, member), \ | |
894 | sizeof(((type *)0)->member))) | |
895 | ||
0f82731f | 896 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 897 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
898 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
899 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
900 | #endif | |
5f39d397 CM |
901 | |
902 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
903 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
904 | { \ | |
df68b8a7 DM |
905 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
906 | u##bits res = le##bits##_to_cpu(p->member); \ | |
907 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 908 | return res; \ |
5f39d397 CM |
909 | } \ |
910 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
911 | u##bits val) \ | |
912 | { \ | |
df68b8a7 DM |
913 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
914 | p->member = cpu_to_le##bits(val); \ | |
915 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 916 | } |
9078a3e1 | 917 | |
5f39d397 CM |
918 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
919 | static inline u##bits btrfs_##name(type *s) \ | |
920 | { \ | |
921 | return le##bits##_to_cpu(s->member); \ | |
922 | } \ | |
923 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
924 | { \ | |
925 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
926 | } |
927 | ||
0b86a832 CM |
928 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
929 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
930 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
931 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
932 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
933 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); | |
934 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
935 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
936 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
937 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
0b86a832 | 938 | |
8a4b83cc CM |
939 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
940 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
941 | total_bytes, 64); | |
942 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
943 | bytes_used, 64); | |
944 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
945 | io_align, 32); | |
946 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
947 | io_width, 32); | |
948 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
949 | sector_size, 32); | |
950 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
951 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
952 | dev_group, 32); | |
953 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
954 | seek_speed, 8); | |
955 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
956 | bandwidth, 8); | |
8a4b83cc | 957 | |
0b86a832 CM |
958 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
959 | { | |
960 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
961 | } | |
962 | ||
e17cade2 | 963 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
964 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
965 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
966 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
967 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
968 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
969 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
970 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 971 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
972 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
973 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
974 | ||
e17cade2 CM |
975 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
976 | { | |
977 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
978 | } | |
979 | ||
980 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
981 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
982 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
983 | stripe_len, 64); | |
984 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
985 | io_align, 32); | |
986 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
987 | io_width, 32); | |
988 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
989 | sector_size, 32); | |
990 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
991 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
992 | num_stripes, 16); | |
321aecc6 CM |
993 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
994 | sub_stripes, 16); | |
0b86a832 CM |
995 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
996 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
997 | ||
998 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
999 | int nr) | |
1000 | { | |
1001 | unsigned long offset = (unsigned long)c; | |
1002 | offset += offsetof(struct btrfs_chunk, stripe); | |
1003 | offset += nr * sizeof(struct btrfs_stripe); | |
1004 | return (struct btrfs_stripe *)offset; | |
1005 | } | |
1006 | ||
a443755f CM |
1007 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1008 | { | |
1009 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1010 | } | |
1011 | ||
0b86a832 CM |
1012 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1013 | struct btrfs_chunk *c, int nr) | |
1014 | { | |
1015 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1016 | } | |
1017 | ||
1018 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, | |
1019 | struct btrfs_chunk *c, int nr, | |
1020 | u64 val) | |
1021 | { | |
1022 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
1023 | } | |
1024 | ||
1025 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, | |
1026 | struct btrfs_chunk *c, int nr) | |
1027 | { | |
1028 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1029 | } | |
1030 | ||
1031 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, | |
1032 | struct btrfs_chunk *c, int nr, | |
1033 | u64 val) | |
1034 | { | |
1035 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
1036 | } | |
1037 | ||
5f39d397 CM |
1038 | /* struct btrfs_block_group_item */ |
1039 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1040 | used, 64); | |
1041 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1042 | used, 64); | |
0b86a832 CM |
1043 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1044 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1045 | |
1046 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1047 | struct btrfs_block_group_item, chunk_objectid, 64); |
1048 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1049 | struct btrfs_block_group_item, flags, 64); | |
1050 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1051 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1052 | |
3954401f CM |
1053 | /* struct btrfs_inode_ref */ |
1054 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1055 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1056 | |
5f39d397 CM |
1057 | /* struct btrfs_inode_item */ |
1058 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
e02119d5 | 1059 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1060 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1061 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1062 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1063 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1064 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1065 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1066 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1067 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
5f39d397 CM |
1068 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 16); |
1069 | BTRFS_SETGET_FUNCS(inode_compat_flags, struct btrfs_inode_item, | |
1070 | compat_flags, 16); | |
1e1d2701 | 1071 | |
0b86a832 | 1072 | static inline struct btrfs_timespec * |
5f39d397 | 1073 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1074 | { |
5f39d397 CM |
1075 | unsigned long ptr = (unsigned long)inode_item; |
1076 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1077 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1078 | } |
1079 | ||
0b86a832 | 1080 | static inline struct btrfs_timespec * |
5f39d397 | 1081 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1082 | { |
5f39d397 CM |
1083 | unsigned long ptr = (unsigned long)inode_item; |
1084 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1085 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1086 | } |
1087 | ||
0b86a832 | 1088 | static inline struct btrfs_timespec * |
5f39d397 | 1089 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1090 | { |
5f39d397 CM |
1091 | unsigned long ptr = (unsigned long)inode_item; |
1092 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1093 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1094 | } |
1095 | ||
0b86a832 | 1096 | static inline struct btrfs_timespec * |
5f39d397 | 1097 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1098 | { |
5f39d397 CM |
1099 | unsigned long ptr = (unsigned long)inode_item; |
1100 | ptr += offsetof(struct btrfs_inode_item, otime); | |
0b86a832 | 1101 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1102 | } |
1103 | ||
0b86a832 CM |
1104 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1105 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1106 | |
0b86a832 | 1107 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1108 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1109 | chunk_tree, 64); | |
1110 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1111 | chunk_objectid, 64); | |
1112 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1113 | chunk_offset, 64); | |
0b86a832 CM |
1114 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1115 | ||
e17cade2 CM |
1116 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1117 | { | |
1118 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1119 | return (u8 *)((unsigned long)dev + ptr); | |
1120 | } | |
1121 | ||
74493f7a CM |
1122 | /* struct btrfs_extent_ref */ |
1123 | BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64); | |
1124 | BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64); | |
1125 | BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64); | |
31840ae1 | 1126 | BTRFS_SETGET_FUNCS(ref_num_refs, struct btrfs_extent_ref, num_refs, 32); |
74493f7a | 1127 | |
7bb86316 CM |
1128 | BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64); |
1129 | BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref, | |
74493f7a | 1130 | generation, 64); |
7bb86316 CM |
1131 | BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref, |
1132 | objectid, 64); | |
31840ae1 ZY |
1133 | BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs, struct btrfs_extent_ref, |
1134 | num_refs, 32); | |
e20d96d6 | 1135 | |
31840ae1 ZY |
1136 | /* struct btrfs_extent_item */ |
1137 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32); | |
5f39d397 CM |
1138 | BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, |
1139 | refs, 32); | |
e20d96d6 | 1140 | |
5f39d397 CM |
1141 | /* struct btrfs_node */ |
1142 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1143 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1144 | |
5f39d397 | 1145 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1146 | { |
5f39d397 CM |
1147 | unsigned long ptr; |
1148 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1149 | sizeof(struct btrfs_key_ptr) * nr; | |
1150 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1151 | } |
1152 | ||
5f39d397 CM |
1153 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1154 | int nr, u64 val) | |
cf27e1ee | 1155 | { |
5f39d397 CM |
1156 | unsigned long ptr; |
1157 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1158 | sizeof(struct btrfs_key_ptr) * nr; | |
1159 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1160 | } |
1161 | ||
74493f7a CM |
1162 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1163 | { | |
1164 | unsigned long ptr; | |
1165 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1166 | sizeof(struct btrfs_key_ptr) * nr; | |
1167 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1168 | } | |
1169 | ||
1170 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1171 | int nr, u64 val) | |
1172 | { | |
1173 | unsigned long ptr; | |
1174 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1175 | sizeof(struct btrfs_key_ptr) * nr; | |
1176 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1177 | } | |
1178 | ||
810191ff | 1179 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1180 | { |
5f39d397 CM |
1181 | return offsetof(struct btrfs_node, ptrs) + |
1182 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1183 | } |
1184 | ||
e644d021 CM |
1185 | void btrfs_node_key(struct extent_buffer *eb, |
1186 | struct btrfs_disk_key *disk_key, int nr); | |
1187 | ||
5f39d397 CM |
1188 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1189 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1190 | { |
5f39d397 CM |
1191 | unsigned long ptr; |
1192 | ptr = btrfs_node_key_ptr_offset(nr); | |
1193 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1194 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1195 | } |
1196 | ||
5f39d397 CM |
1197 | /* struct btrfs_item */ |
1198 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1199 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1200 | |
5f39d397 | 1201 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1202 | { |
5f39d397 CM |
1203 | return offsetof(struct btrfs_leaf, items) + |
1204 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1205 | } |
1206 | ||
5f39d397 CM |
1207 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1208 | int nr) | |
0783fcfc | 1209 | { |
5f39d397 | 1210 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1211 | } |
1212 | ||
5f39d397 CM |
1213 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1214 | struct btrfs_item *item) | |
0783fcfc | 1215 | { |
5f39d397 | 1216 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1217 | } |
1218 | ||
5f39d397 | 1219 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1220 | { |
5f39d397 | 1221 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1222 | } |
1223 | ||
5f39d397 | 1224 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1225 | { |
5f39d397 | 1226 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1227 | } |
1228 | ||
5f39d397 | 1229 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1230 | { |
5f39d397 | 1231 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1232 | } |
1233 | ||
5f39d397 CM |
1234 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1235 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1236 | { |
5f39d397 CM |
1237 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1238 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1239 | } |
1240 | ||
5f39d397 CM |
1241 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1242 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1243 | { |
5f39d397 CM |
1244 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1245 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1246 | } |
1247 | ||
e02119d5 CM |
1248 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1249 | ||
5f39d397 | 1250 | /* struct btrfs_dir_item */ |
5103e947 | 1251 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1252 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1253 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1254 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1255 | |
5f39d397 CM |
1256 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1257 | struct btrfs_dir_item *item, | |
1258 | struct btrfs_disk_key *key) | |
1d4f6404 | 1259 | { |
5f39d397 | 1260 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1261 | } |
1262 | ||
5f39d397 CM |
1263 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1264 | struct btrfs_dir_item *item, | |
1265 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1266 | { |
5f39d397 | 1267 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1268 | } |
1269 | ||
5f39d397 CM |
1270 | /* struct btrfs_disk_key */ |
1271 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1272 | objectid, 64); | |
1273 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1274 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1275 | |
e2fa7227 CM |
1276 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1277 | struct btrfs_disk_key *disk) | |
1278 | { | |
1279 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1280 | cpu->type = disk->type; |
e2fa7227 CM |
1281 | cpu->objectid = le64_to_cpu(disk->objectid); |
1282 | } | |
1283 | ||
1284 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1285 | struct btrfs_key *cpu) | |
1286 | { | |
1287 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1288 | disk->type = cpu->type; |
e2fa7227 CM |
1289 | disk->objectid = cpu_to_le64(cpu->objectid); |
1290 | } | |
1291 | ||
5f39d397 CM |
1292 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1293 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1294 | { |
5f39d397 CM |
1295 | struct btrfs_disk_key disk_key; |
1296 | btrfs_node_key(eb, &disk_key, nr); | |
1297 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1298 | } |
1299 | ||
5f39d397 CM |
1300 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1301 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1302 | { |
5f39d397 CM |
1303 | struct btrfs_disk_key disk_key; |
1304 | btrfs_item_key(eb, &disk_key, nr); | |
1305 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1306 | } |
1307 | ||
5f39d397 CM |
1308 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1309 | struct btrfs_dir_item *item, | |
1310 | struct btrfs_key *key) | |
4d775673 | 1311 | { |
5f39d397 CM |
1312 | struct btrfs_disk_key disk_key; |
1313 | btrfs_dir_item_key(eb, item, &disk_key); | |
1314 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1315 | } |
1316 | ||
58176a96 | 1317 | |
5f39d397 | 1318 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1319 | { |
5f39d397 | 1320 | return key->type; |
3768f368 CM |
1321 | } |
1322 | ||
5f39d397 | 1323 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1324 | { |
5f39d397 | 1325 | key->type = val; |
3768f368 CM |
1326 | } |
1327 | ||
5f39d397 | 1328 | /* struct btrfs_header */ |
db94535d | 1329 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1330 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1331 | generation, 64); | |
1332 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1333 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1334 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1335 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1336 | |
63b10fc4 CM |
1337 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1338 | { | |
1339 | return (btrfs_header_flags(eb) & flag) == flag; | |
1340 | } | |
1341 | ||
1342 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1343 | { | |
1344 | u64 flags = btrfs_header_flags(eb); | |
1345 | btrfs_set_header_flags(eb, flags | flag); | |
1346 | return (flags & flag) == flag; | |
1347 | } | |
1348 | ||
1349 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1350 | { | |
1351 | u64 flags = btrfs_header_flags(eb); | |
1352 | btrfs_set_header_flags(eb, flags & ~flag); | |
1353 | return (flags & flag) == flag; | |
1354 | } | |
1355 | ||
5f39d397 | 1356 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1357 | { |
5f39d397 CM |
1358 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1359 | return (u8 *)ptr; | |
0f7d52f4 CM |
1360 | } |
1361 | ||
e17cade2 CM |
1362 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1363 | { | |
1364 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1365 | return (u8 *)ptr; | |
1366 | } | |
1367 | ||
5f39d397 | 1368 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 1369 | { |
5f39d397 CM |
1370 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
1371 | return (u8 *)ptr; | |
3768f368 CM |
1372 | } |
1373 | ||
5f39d397 | 1374 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 1375 | { |
5f39d397 CM |
1376 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
1377 | return (u8 *)ptr; | |
3768f368 CM |
1378 | } |
1379 | ||
5f39d397 | 1380 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 1381 | { |
5f39d397 | 1382 | return NULL; |
3768f368 CM |
1383 | } |
1384 | ||
5f39d397 | 1385 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 1386 | { |
5f39d397 | 1387 | return NULL; |
3768f368 CM |
1388 | } |
1389 | ||
5f39d397 | 1390 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 1391 | { |
5f39d397 | 1392 | return NULL; |
3768f368 CM |
1393 | } |
1394 | ||
5f39d397 | 1395 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1396 | { |
5f39d397 | 1397 | return (btrfs_header_level(eb) == 0); |
3768f368 CM |
1398 | } |
1399 | ||
5f39d397 | 1400 | /* struct btrfs_root_item */ |
84234f3a YZ |
1401 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
1402 | generation, 64); | |
5f39d397 | 1403 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
1404 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1405 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1406 | |
84234f3a YZ |
1407 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
1408 | generation, 64); | |
db94535d CM |
1409 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1410 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1411 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1412 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
1413 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 32); | |
db94535d CM |
1414 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1415 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
123abc88 | 1416 | |
5f39d397 | 1417 | /* struct btrfs_super_block */ |
db94535d | 1418 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1419 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1420 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1421 | generation, 64); | |
1422 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1423 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1424 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
1425 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
1426 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
1427 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1428 | root_level, 8); | |
0b86a832 CM |
1429 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1430 | chunk_root, 64); | |
1431 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
1432 | chunk_root_level, 8); |
1433 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
1434 | log_root, 64); | |
1435 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, | |
1436 | log_root_level, 8); | |
db94535d CM |
1437 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1438 | total_bytes, 64); | |
1439 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1440 | bytes_used, 64); | |
5f39d397 CM |
1441 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1442 | sectorsize, 32); | |
1443 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1444 | nodesize, 32); | |
1445 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1446 | leafsize, 32); | |
87ee04eb CM |
1447 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1448 | stripesize, 32); | |
5f39d397 CM |
1449 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1450 | root_dir_objectid, 64); | |
8a4b83cc CM |
1451 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1452 | num_devices, 64); | |
2e635a27 | 1453 | |
5f39d397 | 1454 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 1455 | { |
5f39d397 | 1456 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
1457 | } |
1458 | ||
5f39d397 CM |
1459 | /* struct btrfs_file_extent_item */ |
1460 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 1461 | |
5f39d397 | 1462 | static inline unsigned long btrfs_file_extent_inline_start(struct |
236454df CM |
1463 | btrfs_file_extent_item *e) |
1464 | { | |
5f39d397 | 1465 | unsigned long offset = (unsigned long)e; |
db94535d | 1466 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1467 | return offset; |
236454df CM |
1468 | } |
1469 | ||
1470 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
1471 | { | |
db94535d | 1472 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
1473 | } |
1474 | ||
db94535d CM |
1475 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
1476 | disk_bytenr, 64); | |
5f39d397 CM |
1477 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
1478 | generation, 64); | |
db94535d CM |
1479 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
1480 | disk_num_bytes, 64); | |
5f39d397 CM |
1481 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
1482 | offset, 64); | |
db94535d CM |
1483 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
1484 | num_bytes, 64); | |
c8b97818 CM |
1485 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
1486 | ram_bytes, 64); | |
1487 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
1488 | compression, 8); | |
1489 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
1490 | encryption, 8); | |
1491 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
1492 | other_encoding, 16); | |
1493 | ||
1494 | /* this returns the number of file bytes represented by the inline item. | |
1495 | * If an item is compressed, this is the uncompressed size | |
1496 | */ | |
1497 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
1498 | struct btrfs_file_extent_item *e) | |
1499 | { | |
1500 | return btrfs_file_extent_ram_bytes(eb, e); | |
1501 | } | |
1502 | ||
1503 | /* | |
1504 | * this returns the number of bytes used by the item on disk, minus the | |
1505 | * size of any extent headers. If a file is compressed on disk, this is | |
1506 | * the compressed size | |
1507 | */ | |
1508 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
1509 | struct btrfs_item *e) | |
1510 | { | |
1511 | unsigned long offset; | |
1512 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
1513 | return btrfs_item_size(eb, e) - offset; | |
1514 | } | |
9f5fae2f | 1515 | |
e20d96d6 CM |
1516 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1517 | { | |
1518 | return sb->s_fs_info; | |
1519 | } | |
1520 | ||
58176a96 JB |
1521 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
1522 | const char *name, int len) | |
1523 | { | |
1524 | /* if we already have a name just free it */ | |
1525 | if (root->name) | |
1526 | kfree(root->name); | |
1527 | ||
1528 | root->name = kmalloc(len+1, GFP_KERNEL); | |
1529 | if (!root->name) | |
1530 | return -ENOMEM; | |
1531 | ||
1532 | memcpy(root->name, name, len); | |
1533 | root->name[len] ='\0'; | |
1534 | ||
1535 | return 0; | |
1536 | } | |
1537 | ||
db94535d CM |
1538 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) { |
1539 | if (level == 0) | |
1540 | return root->leafsize; | |
1541 | return root->nodesize; | |
1542 | } | |
1543 | ||
4beb1b8b CM |
1544 | /* helper function to cast into the data area of the leaf. */ |
1545 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 1546 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
1547 | btrfs_item_offset_nr(leaf, slot))) |
1548 | ||
1549 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
1550 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
1551 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 1552 | |
2b1f55b0 CM |
1553 | static inline struct dentry *fdentry(struct file *file) |
1554 | { | |
6da6abae | 1555 | return file->f_path.dentry; |
6da6abae CM |
1556 | } |
1557 | ||
b18c6685 | 1558 | /* extent-tree.c */ |
31840ae1 | 1559 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
5b21f2ed ZY |
1560 | int btrfs_lookup_extent_ref(struct btrfs_trans_handle *trans, |
1561 | struct btrfs_root *root, u64 bytenr, | |
1562 | u64 num_bytes, u32 *refs); | |
e02119d5 CM |
1563 | int btrfs_update_pinned_extents(struct btrfs_root *root, |
1564 | u64 bytenr, u64 num, int pin); | |
1565 | int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans, | |
1566 | struct btrfs_root *root, struct extent_buffer *leaf); | |
7ea394f1 YZ |
1567 | int btrfs_cross_ref_exists(struct btrfs_trans_handle *trans, |
1568 | struct btrfs_root *root, | |
f321e491 | 1569 | struct btrfs_key *key, u64 bytenr); |
e9d0b13b CM |
1570 | int btrfs_extent_post_op(struct btrfs_trans_handle *trans, |
1571 | struct btrfs_root *root); | |
d1310b2e | 1572 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); |
5276aeda CM |
1573 | struct btrfs_block_group_cache *btrfs_lookup_block_group(struct |
1574 | btrfs_fs_info *info, | |
db94535d | 1575 | u64 bytenr); |
31f3c99b CM |
1576 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1577 | struct btrfs_block_group_cache | |
be744175 | 1578 | *hint, u64 search_start, |
de428b63 | 1579 | int data, int owner); |
5f39d397 | 1580 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
7bb86316 | 1581 | struct btrfs_root *root, |
31840ae1 | 1582 | u32 blocksize, u64 parent, |
7bb86316 CM |
1583 | u64 root_objectid, |
1584 | u64 ref_generation, | |
7bb86316 CM |
1585 | int level, |
1586 | u64 hint, | |
1587 | u64 empty_size); | |
65b51a00 CM |
1588 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
1589 | struct btrfs_root *root, | |
1590 | u64 bytenr, u32 blocksize); | |
4d775673 | 1591 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
7bb86316 | 1592 | struct btrfs_root *root, |
31840ae1 | 1593 | u64 num_bytes, u64 parent, u64 min_bytes, |
98d20f67 | 1594 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1595 | u64 owner, u64 empty_size, u64 hint_byte, |
ec44a35c | 1596 | u64 search_end, struct btrfs_key *ins, u64 data); |
e6dcd2dc | 1597 | int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1598 | struct btrfs_root *root, u64 parent, |
e6dcd2dc | 1599 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1600 | u64 owner, struct btrfs_key *ins); |
e02119d5 | 1601 | int btrfs_alloc_logged_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1602 | struct btrfs_root *root, u64 parent, |
e02119d5 | 1603 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1604 | u64 owner, struct btrfs_key *ins); |
e6dcd2dc CM |
1605 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
1606 | struct btrfs_root *root, | |
1607 | u64 num_bytes, u64 min_alloc_size, | |
1608 | u64 empty_size, u64 hint_byte, | |
1609 | u64 search_end, struct btrfs_key *ins, | |
1610 | u64 data); | |
e089f05c | 1611 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
31840ae1 ZY |
1612 | struct extent_buffer *orig_buf, struct extent_buffer *buf, |
1613 | u32 *nr_extents); | |
1614 | int btrfs_cache_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
1615 | struct extent_buffer *buf, u32 nr_extents); | |
1616 | int btrfs_update_ref(struct btrfs_trans_handle *trans, | |
1617 | struct btrfs_root *root, struct extent_buffer *orig_buf, | |
1618 | struct extent_buffer *buf, int start_slot, int nr); | |
1619 | int btrfs_free_extent(struct btrfs_trans_handle *trans, | |
1620 | struct btrfs_root *root, | |
1621 | u64 bytenr, u64 num_bytes, u64 parent, | |
7bb86316 | 1622 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1623 | u64 owner_objectid, int pin); |
65b51a00 | 1624 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
ccd467d6 CM |
1625 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
1626 | struct btrfs_root *root, | |
d1310b2e | 1627 | struct extent_io_tree *unpin); |
b18c6685 | 1628 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
1629 | struct btrfs_root *root, |
1630 | u64 bytenr, u64 num_bytes, u64 parent, | |
1631 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1632 | u64 owner_objectid); |
31840ae1 ZY |
1633 | int btrfs_update_extent_ref(struct btrfs_trans_handle *trans, |
1634 | struct btrfs_root *root, u64 bytenr, | |
1635 | u64 orig_parent, u64 parent, | |
1636 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1637 | u64 owner_objectid); |
9078a3e1 CM |
1638 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1639 | struct btrfs_root *root); | |
1640 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1641 | int btrfs_read_block_groups(struct btrfs_root *root); | |
0b86a832 CM |
1642 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
1643 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 1644 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 1645 | u64 size); |
1a40e23b ZY |
1646 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
1647 | struct btrfs_root *root, u64 group_start); | |
1648 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
f82d02d9 YZ |
1649 | int btrfs_free_reloc_root(struct btrfs_trans_handle *trans, |
1650 | struct btrfs_root *root); | |
1a40e23b | 1651 | int btrfs_drop_dead_reloc_roots(struct btrfs_root *root); |
1a40e23b ZY |
1652 | int btrfs_reloc_tree_cache_ref(struct btrfs_trans_handle *trans, |
1653 | struct btrfs_root *root, | |
1654 | struct extent_buffer *buf, u64 orig_start); | |
1655 | int btrfs_add_dead_reloc_root(struct btrfs_root *root); | |
1656 | int btrfs_cleanup_reloc_trees(struct btrfs_root *root); | |
dee26a9f | 1657 | /* ctree.c */ |
0b86a832 CM |
1658 | int btrfs_previous_item(struct btrfs_root *root, |
1659 | struct btrfs_path *path, u64 min_objectid, | |
1660 | int type); | |
1a40e23b ZY |
1661 | int btrfs_merge_path(struct btrfs_trans_handle *trans, |
1662 | struct btrfs_root *root, | |
1663 | struct btrfs_key *node_keys, | |
1664 | u64 *nodes, int lowest_level); | |
31840ae1 ZY |
1665 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
1666 | struct btrfs_root *root, struct btrfs_path *path, | |
1667 | struct btrfs_key *new_key); | |
925baedd CM |
1668 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
1669 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 1670 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
1671 | struct btrfs_key *key, int lowest_level, |
1672 | int cache_only, u64 min_trans); | |
1673 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 1674 | struct btrfs_key *max_key, |
3f157a2f CM |
1675 | struct btrfs_path *path, int cache_only, |
1676 | u64 min_trans); | |
5f39d397 CM |
1677 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
1678 | struct btrfs_root *root, struct extent_buffer *buf, | |
1679 | struct extent_buffer *parent, int parent_slot, | |
65b51a00 | 1680 | struct extent_buffer **cow_ret, u64 prealloc_dest); |
be20aa9d CM |
1681 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
1682 | struct btrfs_root *root, | |
1683 | struct extent_buffer *buf, | |
1684 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
6567e837 CM |
1685 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1686 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1687 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1688 | struct btrfs_root *root, | |
1689 | struct btrfs_path *path, | |
179e29e4 | 1690 | u32 new_size, int from_end); |
e089f05c CM |
1691 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1692 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1693 | ins_len, int cow); | |
6702ed49 | 1694 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 1695 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
1696 | int start_slot, int cache_only, u64 *last_ret, |
1697 | struct btrfs_key *progress); | |
234b63a0 | 1698 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1699 | struct btrfs_path *btrfs_alloc_path(void); |
1700 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1701 | void btrfs_init_path(struct btrfs_path *p); |
85e21bac CM |
1702 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1703 | struct btrfs_path *path, int slot, int nr); | |
323ac95b CM |
1704 | int btrfs_del_leaf(struct btrfs_trans_handle *trans, |
1705 | struct btrfs_root *root, | |
1706 | struct btrfs_path *path, u64 bytenr); | |
85e21bac CM |
1707 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
1708 | struct btrfs_root *root, | |
1709 | struct btrfs_path *path) | |
1710 | { | |
1711 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
1712 | } | |
1713 | ||
e089f05c CM |
1714 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1715 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
1716 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
1717 | struct btrfs_root *root, | |
1718 | struct btrfs_path *path, | |
1719 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
1720 | ||
1721 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
1722 | struct btrfs_root *root, | |
1723 | struct btrfs_path *path, | |
1724 | struct btrfs_key *key, | |
1725 | u32 data_size) | |
1726 | { | |
1727 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
1728 | } | |
1729 | ||
234b63a0 | 1730 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 1731 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 1732 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
e089f05c | 1733 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
9f3a7427 | 1734 | *root); |
f82d02d9 YZ |
1735 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
1736 | struct btrfs_root *root, | |
1737 | struct extent_buffer *node, | |
1738 | struct extent_buffer *parent); | |
dee26a9f | 1739 | /* root-item.c */ |
e089f05c CM |
1740 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1741 | struct btrfs_key *key); | |
1742 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1743 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1744 | *item); | |
1745 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1746 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1747 | *item); | |
1748 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1749 | btrfs_root_item *item, struct btrfs_key *key); | |
bf4ef679 CM |
1750 | int btrfs_search_root(struct btrfs_root *root, u64 search_start, |
1751 | u64 *found_objectid); | |
5ce14bbc CM |
1752 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, |
1753 | struct btrfs_root *latest_root); | |
dee26a9f | 1754 | /* dir-item.c */ |
e089f05c | 1755 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 | 1756 | *root, const char *name, int name_len, u64 dir, |
aec7477b | 1757 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
1758 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1759 | struct btrfs_root *root, | |
1760 | struct btrfs_path *path, u64 dir, | |
1761 | const char *name, int name_len, | |
1762 | int mod); | |
1763 | struct btrfs_dir_item * | |
1764 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1765 | struct btrfs_root *root, | |
1766 | struct btrfs_path *path, u64 dir, | |
1767 | u64 objectid, const char *name, int name_len, | |
1768 | int mod); | |
1769 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1770 | struct btrfs_path *path, | |
7f5c1516 | 1771 | const char *name, int name_len); |
7e38180e CM |
1772 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1773 | struct btrfs_root *root, | |
1774 | struct btrfs_path *path, | |
1775 | struct btrfs_dir_item *di); | |
5103e947 JB |
1776 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
1777 | struct btrfs_root *root, const char *name, | |
1778 | u16 name_len, const void *data, u16 data_len, | |
1779 | u64 dir); | |
1780 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, | |
1781 | struct btrfs_root *root, | |
1782 | struct btrfs_path *path, u64 dir, | |
1783 | const char *name, u16 name_len, | |
1784 | int mod); | |
7b128766 JB |
1785 | |
1786 | /* orphan.c */ | |
1787 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
1788 | struct btrfs_root *root, u64 offset); | |
1789 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
1790 | struct btrfs_root *root, u64 offset); | |
1791 | ||
dee26a9f | 1792 | /* inode-map.c */ |
9f5fae2f CM |
1793 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1794 | struct btrfs_root *fs_root, | |
1795 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1796 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1797 | ||
dee26a9f | 1798 | /* inode-item.c */ |
3954401f CM |
1799 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
1800 | struct btrfs_root *root, | |
1801 | const char *name, int name_len, | |
aec7477b | 1802 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
1803 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
1804 | struct btrfs_root *root, | |
1805 | const char *name, int name_len, | |
aec7477b | 1806 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
1807 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
1808 | struct btrfs_root *root, | |
1809 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 1810 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1811 | *root, struct btrfs_path *path, |
1812 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1813 | |
1814 | /* file-item.c */ | |
61b49440 CM |
1815 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
1816 | struct bio *bio); | |
b18c6685 | 1817 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
1818 | struct btrfs_root *root, |
1819 | u64 objectid, u64 pos, | |
1820 | u64 disk_offset, u64 disk_num_bytes, | |
1821 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
1822 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
1823 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1824 | struct btrfs_root *root, | |
1825 | struct btrfs_path *path, u64 objectid, | |
db94535d | 1826 | u64 bytenr, int mod); |
065631f6 CM |
1827 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
1828 | struct btrfs_root *root, struct inode *inode, | |
e6dcd2dc | 1829 | struct btrfs_ordered_sum *sums); |
3edf7d33 CM |
1830 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
1831 | struct bio *bio); | |
c8b97818 CM |
1832 | int btrfs_csum_file_bytes(struct btrfs_root *root, struct inode *inode, |
1833 | u64 start, unsigned long len); | |
b18c6685 CM |
1834 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1835 | struct btrfs_root *root, | |
1836 | struct btrfs_path *path, | |
1837 | u64 objectid, u64 offset, | |
1838 | int cow); | |
1de037a4 CM |
1839 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1840 | struct btrfs_root *root, struct btrfs_path *path, | |
1841 | u64 isize); | |
39279cc3 | 1842 | /* inode.c */ |
4881ee5a CM |
1843 | |
1844 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 1845 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
1846 | #define ClearPageChecked ClearPageFsMisc |
1847 | #define SetPageChecked SetPageFsMisc | |
1848 | #define PageChecked PageFsMisc | |
1849 | #endif | |
1850 | ||
e02119d5 CM |
1851 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
1852 | struct btrfs_root *root, | |
1853 | struct inode *dir, struct inode *inode, | |
1854 | const char *name, int name_len); | |
1855 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
1856 | struct inode *parent_inode, struct inode *inode, | |
1857 | const char *name, int name_len, int add_backref, u64 index); | |
1858 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, | |
1859 | struct btrfs_root *root, | |
1860 | struct inode *inode, u64 new_size, | |
1861 | u32 min_type); | |
1862 | ||
ea8c2819 CM |
1863 | int btrfs_start_delalloc_inodes(struct btrfs_root *root); |
1864 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end); | |
f421950f CM |
1865 | int btrfs_writepages(struct address_space *mapping, |
1866 | struct writeback_control *wbc); | |
cb8e7090 | 1867 | int btrfs_create_subvol_root(struct btrfs_root *new_root, struct dentry *dentry, |
f46b5a66 CH |
1868 | struct btrfs_trans_handle *trans, u64 new_dirid, |
1869 | struct btrfs_block_group_cache *block_group); | |
1870 | ||
3b96362c SW |
1871 | void btrfs_invalidate_dcache_root(struct btrfs_root *root, char *name, |
1872 | int namelen); | |
1873 | ||
239b14b3 | 1874 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 1875 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 1876 | |
edbd8d4e CM |
1877 | unsigned long btrfs_force_ra(struct address_space *mapping, |
1878 | struct file_ra_state *ra, struct file *file, | |
1879 | pgoff_t offset, pgoff_t last_index); | |
1832a6d5 CM |
1880 | int btrfs_check_free_space(struct btrfs_root *root, u64 num_required, |
1881 | int for_del); | |
9ebefb18 CM |
1882 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page); |
1883 | int btrfs_readpage(struct file *file, struct page *page); | |
39279cc3 | 1884 | void btrfs_delete_inode(struct inode *inode); |
2da98f00 | 1885 | void btrfs_put_inode(struct inode *inode); |
39279cc3 CM |
1886 | void btrfs_read_locked_inode(struct inode *inode); |
1887 | int btrfs_write_inode(struct inode *inode, int wait); | |
1888 | void btrfs_dirty_inode(struct inode *inode); | |
1889 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
1890 | void btrfs_destroy_inode(struct inode *inode); | |
1891 | int btrfs_init_cachep(void); | |
1892 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 1893 | long btrfs_ioctl_trans_end(struct file *file); |
5b21f2ed ZY |
1894 | struct inode *btrfs_ilookup(struct super_block *s, u64 objectid, |
1895 | struct btrfs_root *root, int wait); | |
39279cc3 CM |
1896 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, |
1897 | struct btrfs_root *root); | |
1a54ef8c BR |
1898 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
1899 | struct btrfs_root *root, int *is_new); | |
39279cc3 CM |
1900 | int btrfs_commit_write(struct file *file, struct page *page, |
1901 | unsigned from, unsigned to); | |
a52d9a80 CM |
1902 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
1903 | size_t page_offset, u64 start, u64 end, | |
1904 | int create); | |
1905 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
1906 | struct btrfs_root *root, | |
1907 | struct inode *inode); | |
5b21f2ed ZY |
1908 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
1909 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
1910 | void btrfs_orphan_cleanup(struct btrfs_root *root); | |
f46b5a66 CH |
1911 | |
1912 | /* ioctl.c */ | |
1913 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
1914 | ||
39279cc3 | 1915 | /* file.c */ |
e02119d5 | 1916 | int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync); |
5b21f2ed ZY |
1917 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
1918 | int skip_pinned); | |
5f56406a | 1919 | int btrfs_check_file(struct btrfs_root *root, struct inode *inode); |
39279cc3 CM |
1920 | extern struct file_operations btrfs_file_operations; |
1921 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
1922 | struct btrfs_root *root, struct inode *inode, | |
00f5c795 | 1923 | u64 start, u64 end, u64 inline_limit, u64 *hint_block); |
6bf13c0c SW |
1924 | int btrfs_release_file(struct inode *inode, struct file *file); |
1925 | ||
6702ed49 CM |
1926 | /* tree-defrag.c */ |
1927 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
1928 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
1929 | |
1930 | /* sysfs.c */ | |
1931 | int btrfs_init_sysfs(void); | |
1932 | void btrfs_exit_sysfs(void); | |
1933 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
1934 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
1935 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
1936 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
1937 | ||
5103e947 JB |
1938 | /* xattr.c */ |
1939 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 1940 | |
edbd8d4e CM |
1941 | /* super.c */ |
1942 | u64 btrfs_parse_size(char *str); | |
edf24abe | 1943 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 1944 | int btrfs_sync_fs(struct super_block *sb, int wait); |
33268eaf JB |
1945 | |
1946 | /* acl.c */ | |
1947 | int btrfs_check_acl(struct inode *inode, int mask); | |
1948 | int btrfs_init_acl(struct inode *inode, struct inode *dir); | |
1949 | int btrfs_acl_chmod(struct inode *inode); | |
0f9dd46c JB |
1950 | |
1951 | /* free-space-cache.c */ | |
1952 | int btrfs_add_free_space(struct btrfs_block_group_cache *block_group, | |
1953 | u64 bytenr, u64 size); | |
25179201 JB |
1954 | int btrfs_add_free_space_lock(struct btrfs_block_group_cache *block_group, |
1955 | u64 offset, u64 bytes); | |
0f9dd46c JB |
1956 | int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group, |
1957 | u64 bytenr, u64 size); | |
25179201 JB |
1958 | int btrfs_remove_free_space_lock(struct btrfs_block_group_cache *block_group, |
1959 | u64 offset, u64 bytes); | |
0f9dd46c JB |
1960 | void btrfs_remove_free_space_cache(struct btrfs_block_group_cache |
1961 | *block_group); | |
1962 | struct btrfs_free_space *btrfs_find_free_space(struct btrfs_block_group_cache | |
1963 | *block_group, u64 offset, | |
1964 | u64 bytes); | |
1965 | void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group, | |
1966 | u64 bytes); | |
1967 | u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group); | |
eb60ceac | 1968 | #endif |