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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 | |
31840ae1 | 42 | #define BTRFS_MAGIC "_B9RfS_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; |
db94535d | 300 | u8 root_level; |
0b86a832 | 301 | u8 chunk_root_level; |
e02119d5 | 302 | u8 log_root_level; |
0d81ba5d | 303 | struct btrfs_dev_item dev_item; |
7ae9c09d | 304 | char label[BTRFS_LABEL_SIZE]; |
0b86a832 | 305 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
cfaa7295 CM |
306 | } __attribute__ ((__packed__)); |
307 | ||
fec577fb | 308 | /* |
62e2749e | 309 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
310 | * the item in the leaf (relative to the start of the data area) |
311 | */ | |
0783fcfc | 312 | struct btrfs_item { |
e2fa7227 | 313 | struct btrfs_disk_key key; |
123abc88 | 314 | __le32 offset; |
5f39d397 | 315 | __le32 size; |
eb60ceac CM |
316 | } __attribute__ ((__packed__)); |
317 | ||
fec577fb CM |
318 | /* |
319 | * leaves have an item area and a data area: | |
320 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
321 | * | |
322 | * The data is separate from the items to get the keys closer together | |
323 | * during searches. | |
324 | */ | |
234b63a0 | 325 | struct btrfs_leaf { |
bb492bb0 | 326 | struct btrfs_header header; |
123abc88 | 327 | struct btrfs_item items[]; |
eb60ceac CM |
328 | } __attribute__ ((__packed__)); |
329 | ||
fec577fb CM |
330 | /* |
331 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
332 | * other blocks | |
333 | */ | |
123abc88 CM |
334 | struct btrfs_key_ptr { |
335 | struct btrfs_disk_key key; | |
336 | __le64 blockptr; | |
74493f7a | 337 | __le64 generation; |
123abc88 CM |
338 | } __attribute__ ((__packed__)); |
339 | ||
234b63a0 | 340 | struct btrfs_node { |
bb492bb0 | 341 | struct btrfs_header header; |
123abc88 | 342 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
343 | } __attribute__ ((__packed__)); |
344 | ||
fec577fb | 345 | /* |
234b63a0 CM |
346 | * btrfs_paths remember the path taken from the root down to the leaf. |
347 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
348 | * to any other levels that are present. |
349 | * | |
350 | * The slots array records the index of the item or block pointer | |
351 | * used while walking the tree. | |
352 | */ | |
234b63a0 | 353 | struct btrfs_path { |
5f39d397 | 354 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 355 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
356 | /* if there is real range locking, this locks field will change */ |
357 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 358 | int reada; |
925baedd CM |
359 | /* keep some upper locks as we walk down */ |
360 | int keep_locks; | |
5cd57b2c | 361 | int skip_locking; |
6702ed49 | 362 | int lowest_level; |
eb60ceac | 363 | }; |
5de08d7d | 364 | |
62e2749e CM |
365 | /* |
366 | * items in the extent btree are used to record the objectid of the | |
367 | * owner of the block and the number of references | |
368 | */ | |
369 | struct btrfs_extent_item { | |
370 | __le32 refs; | |
74493f7a CM |
371 | } __attribute__ ((__packed__)); |
372 | ||
373 | struct btrfs_extent_ref { | |
374 | __le64 root; | |
375 | __le64 generation; | |
376 | __le64 objectid; | |
377 | __le64 offset; | |
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 | ||
404 | /* | |
405 | * there is no padding here on purpose. If you want to extent the inode, | |
406 | * make a new item type | |
407 | */ | |
408 | struct btrfs_inode_item { | |
e02119d5 | 409 | /* nfs style generation number */ |
1e1d2701 | 410 | __le64 generation; |
e02119d5 CM |
411 | /* transid that last touched this inode */ |
412 | __le64 transid; | |
1e1d2701 CM |
413 | __le64 size; |
414 | __le64 nblocks; | |
31f3c99b | 415 | __le64 block_group; |
1e1d2701 CM |
416 | __le32 nlink; |
417 | __le32 uid; | |
418 | __le32 gid; | |
419 | __le32 mode; | |
0b86a832 | 420 | __le64 rdev; |
1e1d2701 CM |
421 | __le16 flags; |
422 | __le16 compat_flags; | |
0b86a832 CM |
423 | struct btrfs_timespec atime; |
424 | struct btrfs_timespec ctime; | |
425 | struct btrfs_timespec mtime; | |
426 | struct btrfs_timespec otime; | |
1e1d2701 CM |
427 | } __attribute__ ((__packed__)); |
428 | ||
e02119d5 CM |
429 | struct btrfs_dir_log_item { |
430 | __le64 end; | |
431 | } __attribute__ ((__packed__)); | |
432 | ||
62e2749e | 433 | struct btrfs_dir_item { |
d6e4a428 | 434 | struct btrfs_disk_key location; |
e02119d5 | 435 | __le64 transid; |
5103e947 | 436 | __le16 data_len; |
a8a2ee0c | 437 | __le16 name_len; |
62e2749e CM |
438 | u8 type; |
439 | } __attribute__ ((__packed__)); | |
440 | ||
441 | struct btrfs_root_item { | |
d6e4a428 CM |
442 | struct btrfs_inode_item inode; |
443 | __le64 root_dirid; | |
db94535d CM |
444 | __le64 bytenr; |
445 | __le64 byte_limit; | |
446 | __le64 bytes_used; | |
5eda7b5e | 447 | __le32 flags; |
62e2749e | 448 | __le32 refs; |
5eda7b5e CM |
449 | struct btrfs_disk_key drop_progress; |
450 | u8 drop_level; | |
db94535d | 451 | u8 level; |
9f5fae2f | 452 | } __attribute__ ((__packed__)); |
62e2749e | 453 | |
236454df CM |
454 | #define BTRFS_FILE_EXTENT_REG 0 |
455 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
456 | ||
9f5fae2f | 457 | struct btrfs_file_extent_item { |
71951f35 | 458 | __le64 generation; |
236454df | 459 | u8 type; |
9f5fae2f CM |
460 | /* |
461 | * disk space consumed by the extent, checksum blocks are included | |
462 | * in these numbers | |
463 | */ | |
db94535d CM |
464 | __le64 disk_bytenr; |
465 | __le64 disk_num_bytes; | |
9f5fae2f | 466 | /* |
dee26a9f | 467 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
468 | * this extent record is for. This allows a file extent to point |
469 | * into the middle of an existing extent on disk, sharing it | |
470 | * between two snapshots (useful if some bytes in the middle of the | |
471 | * extent have changed | |
472 | */ | |
473 | __le64 offset; | |
474 | /* | |
475 | * the logical number of file blocks (no csums included) | |
476 | */ | |
db94535d | 477 | __le64 num_bytes; |
9f5fae2f CM |
478 | } __attribute__ ((__packed__)); |
479 | ||
f254e52c | 480 | struct btrfs_csum_item { |
509659cd | 481 | u8 csum; |
f254e52c CM |
482 | } __attribute__ ((__packed__)); |
483 | ||
0b86a832 CM |
484 | /* different types of block groups (and chunks) */ |
485 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
486 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
487 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 488 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 489 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 490 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 491 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
1e2677e0 | 492 | |
9078a3e1 CM |
493 | struct btrfs_block_group_item { |
494 | __le64 used; | |
0b86a832 CM |
495 | __le64 chunk_objectid; |
496 | __le64 flags; | |
9078a3e1 CM |
497 | } __attribute__ ((__packed__)); |
498 | ||
6324fbf3 CM |
499 | struct btrfs_space_info { |
500 | u64 flags; | |
501 | u64 total_bytes; | |
502 | u64 bytes_used; | |
503 | u64 bytes_pinned; | |
e8569813 | 504 | u64 bytes_reserved; |
6324fbf3 | 505 | int full; |
0ef3e66b | 506 | int force_alloc; |
6324fbf3 | 507 | struct list_head list; |
0f9dd46c JB |
508 | |
509 | /* for block groups in our same type */ | |
510 | struct list_head block_groups; | |
511 | spinlock_t lock; | |
512 | }; | |
513 | ||
514 | struct btrfs_free_space { | |
515 | struct rb_node bytes_index; | |
516 | struct rb_node offset_index; | |
517 | u64 offset; | |
518 | u64 bytes; | |
6324fbf3 CM |
519 | }; |
520 | ||
9078a3e1 CM |
521 | struct btrfs_block_group_cache { |
522 | struct btrfs_key key; | |
523 | struct btrfs_block_group_item item; | |
c286ac48 | 524 | spinlock_t lock; |
324ae4df | 525 | u64 pinned; |
e8569813 | 526 | u64 reserved; |
0b86a832 CM |
527 | u64 flags; |
528 | int cached; | |
8f18cf13 | 529 | int ro; |
0f9dd46c JB |
530 | int dirty; |
531 | ||
532 | struct btrfs_space_info *space_info; | |
533 | ||
534 | /* free space cache stuff */ | |
535 | struct rb_root free_space_bytes; | |
536 | struct rb_root free_space_offset; | |
537 | ||
538 | /* block group cache stuff */ | |
539 | struct rb_node cache_node; | |
540 | ||
541 | /* for block groups in the same raid type */ | |
542 | struct list_head list; | |
9078a3e1 | 543 | }; |
0b86a832 | 544 | |
e4657689 ZY |
545 | struct btrfs_leaf_ref_tree { |
546 | struct rb_root root; | |
547 | struct list_head list; | |
548 | spinlock_t lock; | |
549 | }; | |
550 | ||
0b86a832 | 551 | struct btrfs_device; |
8a4b83cc | 552 | struct btrfs_fs_devices; |
9f5fae2f | 553 | struct btrfs_fs_info { |
5f39d397 | 554 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 555 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
556 | struct btrfs_root *extent_root; |
557 | struct btrfs_root *tree_root; | |
0b86a832 CM |
558 | struct btrfs_root *chunk_root; |
559 | struct btrfs_root *dev_root; | |
e02119d5 CM |
560 | |
561 | /* the log root tree is a directory of all the other log roots */ | |
562 | struct btrfs_root *log_root_tree; | |
0f7d52f4 | 563 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 564 | |
0f9dd46c JB |
565 | /* block group cache stuff */ |
566 | spinlock_t block_group_cache_lock; | |
567 | struct rb_root block_group_cache_tree; | |
568 | ||
d1310b2e CM |
569 | struct extent_io_tree pinned_extents; |
570 | struct extent_io_tree pending_del; | |
571 | struct extent_io_tree extent_ins; | |
1a5bc167 | 572 | |
0b86a832 CM |
573 | /* logical->physical extent mapping */ |
574 | struct btrfs_mapping_tree mapping_tree; | |
575 | ||
293ffd5f | 576 | u64 generation; |
15ee9bc7 | 577 | u64 last_trans_committed; |
e02119d5 | 578 | u64 last_trans_new_blockgroup; |
9ca9ee09 | 579 | u64 open_ioctl_trans; |
b6cda9bc | 580 | unsigned long mount_opt; |
c59f8951 | 581 | u64 max_extent; |
6f568d35 | 582 | u64 max_inline; |
8f662a76 | 583 | u64 alloc_start; |
79154b1b | 584 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 585 | wait_queue_head_t transaction_throttle; |
f9295749 | 586 | wait_queue_head_t transaction_wait; |
4854ddd0 | 587 | wait_queue_head_t async_submit_wait; |
e02119d5 CM |
588 | |
589 | wait_queue_head_t tree_log_wait; | |
590 | ||
4b52dff6 | 591 | struct btrfs_super_block super_copy; |
a061fc8d | 592 | struct btrfs_super_block super_for_commit; |
0b86a832 | 593 | struct block_device *__bdev; |
e20d96d6 | 594 | struct super_block *sb; |
d98237b3 | 595 | struct inode *btree_inode; |
04160088 | 596 | struct backing_dev_info bdi; |
19c00ddc | 597 | spinlock_t hash_lock; |
79154b1b | 598 | struct mutex trans_mutex; |
e02119d5 | 599 | struct mutex tree_log_mutex; |
a74a4b97 CM |
600 | struct mutex transaction_kthread_mutex; |
601 | struct mutex cleaner_mutex; | |
925baedd CM |
602 | struct mutex alloc_mutex; |
603 | struct mutex chunk_mutex; | |
a2135011 | 604 | struct mutex drop_mutex; |
7d9eb12c | 605 | struct mutex volume_mutex; |
1a40e23b | 606 | struct mutex tree_reloc_mutex; |
8fd17795 | 607 | struct list_head trans_list; |
19c00ddc | 608 | struct list_head hashers; |
facda1e7 | 609 | struct list_head dead_roots; |
e02119d5 | 610 | |
cb03c743 | 611 | atomic_t nr_async_submits; |
8c8bee1d | 612 | atomic_t async_submit_draining; |
0986fe9e | 613 | atomic_t nr_async_bios; |
e02119d5 CM |
614 | atomic_t tree_log_writers; |
615 | atomic_t tree_log_commit; | |
616 | unsigned long tree_log_batch; | |
617 | u64 tree_log_transid; | |
ce9adaa5 | 618 | |
3eaa2885 CM |
619 | /* |
620 | * this is used by the balancing code to wait for all the pending | |
621 | * ordered extents | |
622 | */ | |
623 | spinlock_t ordered_extent_lock; | |
624 | struct list_head ordered_extents; | |
ea8c2819 | 625 | struct list_head delalloc_inodes; |
3eaa2885 | 626 | |
8b712842 CM |
627 | /* |
628 | * there is a pool of worker threads for checksumming during writes | |
629 | * and a pool for checksumming after reads. This is because readers | |
630 | * can run with FS locks held, and the writers may be waiting for | |
631 | * those locks. We don't want ordering in the pending list to cause | |
632 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
633 | * |
634 | * A third pool does submit_bio to avoid deadlocking with the other | |
635 | * two | |
8b712842 CM |
636 | */ |
637 | struct btrfs_workers workers; | |
638 | struct btrfs_workers endio_workers; | |
e6dcd2dc | 639 | struct btrfs_workers endio_write_workers; |
1cc127b5 | 640 | struct btrfs_workers submit_workers; |
247e743c CM |
641 | /* |
642 | * fixup workers take dirty pages that didn't properly go through | |
643 | * the cow mechanism and make them safe to write. It happens | |
644 | * for the sys_munmap function call path | |
645 | */ | |
646 | struct btrfs_workers fixup_workers; | |
a74a4b97 CM |
647 | struct task_struct *transaction_kthread; |
648 | struct task_struct *cleaner_kthread; | |
4543df7e | 649 | int thread_pool_size; |
8b712842 | 650 | |
1a40e23b ZY |
651 | /* tree relocation relocated fields */ |
652 | struct extent_io_tree reloc_mapping_tree; | |
653 | struct list_head dead_reloc_roots; | |
654 | struct btrfs_leaf_ref_tree reloc_ref_tree; | |
e4657689 ZY |
655 | struct btrfs_leaf_ref_tree shared_ref_tree; |
656 | ||
58176a96 JB |
657 | struct kobject super_kobj; |
658 | struct completion kobj_unregister; | |
e66f709b | 659 | int do_barriers; |
facda1e7 | 660 | int closing; |
e02119d5 | 661 | int log_root_recovering; |
a2135011 | 662 | atomic_t throttles; |
ab78c84d | 663 | atomic_t throttle_gen; |
9f5fae2f | 664 | |
324ae4df | 665 | u64 total_pinned; |
0b86a832 CM |
666 | struct list_head dirty_cowonly_roots; |
667 | ||
8a4b83cc | 668 | struct btrfs_fs_devices *fs_devices; |
6324fbf3 | 669 | struct list_head space_info; |
1832a6d5 | 670 | spinlock_t delalloc_lock; |
cee36a03 | 671 | spinlock_t new_trans_lock; |
1832a6d5 | 672 | u64 delalloc_bytes; |
e18e4809 | 673 | u64 last_alloc; |
4529ba49 | 674 | u64 last_data_alloc; |
e02119d5 | 675 | u64 last_log_alloc; |
d18a2c44 | 676 | |
31153d81 YZ |
677 | spinlock_t ref_cache_lock; |
678 | u64 total_ref_cache_size; | |
31153d81 | 679 | |
d18a2c44 CM |
680 | u64 avail_data_alloc_bits; |
681 | u64 avail_metadata_alloc_bits; | |
682 | u64 avail_system_alloc_bits; | |
683 | u64 data_alloc_profile; | |
684 | u64 metadata_alloc_profile; | |
685 | u64 system_alloc_profile; | |
788f20eb CM |
686 | |
687 | void *bdev_holder; | |
324ae4df | 688 | }; |
0b86a832 | 689 | |
9f5fae2f CM |
690 | /* |
691 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 692 | * and for the extent tree extent_root root. |
9f5fae2f | 693 | */ |
f321e491 | 694 | struct btrfs_dirty_root; |
9f5fae2f | 695 | struct btrfs_root { |
5f39d397 | 696 | struct extent_buffer *node; |
925baedd CM |
697 | |
698 | /* the node lock is held while changing the node pointer */ | |
699 | spinlock_t node_lock; | |
700 | ||
5f39d397 | 701 | struct extent_buffer *commit_root; |
31153d81 | 702 | struct btrfs_leaf_ref_tree *ref_tree; |
017e5369 | 703 | struct btrfs_leaf_ref_tree ref_tree_struct; |
f321e491 | 704 | struct btrfs_dirty_root *dirty_root; |
e02119d5 | 705 | struct btrfs_root *log_root; |
1a40e23b | 706 | struct btrfs_root *reloc_root; |
31153d81 | 707 | |
62e2749e CM |
708 | struct btrfs_root_item root_item; |
709 | struct btrfs_key root_key; | |
9f5fae2f | 710 | struct btrfs_fs_info *fs_info; |
0f7d52f4 | 711 | struct inode *inode; |
d0c803c4 CM |
712 | struct extent_io_tree dirty_log_pages; |
713 | ||
58176a96 JB |
714 | struct kobject root_kobj; |
715 | struct completion kobj_unregister; | |
a2135011 | 716 | struct mutex objectid_mutex; |
e02119d5 | 717 | struct mutex log_mutex; |
ea8c2819 | 718 | |
0f7d52f4 CM |
719 | u64 objectid; |
720 | u64 last_trans; | |
5f39d397 CM |
721 | |
722 | /* data allocations are done in sectorsize units */ | |
723 | u32 sectorsize; | |
724 | ||
725 | /* node allocations are done in nodesize units */ | |
726 | u32 nodesize; | |
727 | ||
728 | /* leaf allocations are done in leafsize units */ | |
729 | u32 leafsize; | |
730 | ||
87ee04eb CM |
731 | u32 stripesize; |
732 | ||
9f5fae2f | 733 | u32 type; |
1b05da2e CM |
734 | u64 highest_inode; |
735 | u64 last_inode_alloc; | |
9f3a7427 | 736 | int ref_cows; |
0b86a832 | 737 | int track_dirty; |
3f157a2f | 738 | u64 defrag_trans_start; |
6702ed49 | 739 | struct btrfs_key defrag_progress; |
0ef3e66b | 740 | struct btrfs_key defrag_max; |
6702ed49 CM |
741 | int defrag_running; |
742 | int defrag_level; | |
58176a96 | 743 | char *name; |
4313b399 | 744 | int in_sysfs; |
0b86a832 CM |
745 | |
746 | /* the dirty list is only used by non-reference counted roots */ | |
747 | struct list_head dirty_list; | |
7b128766 | 748 | |
bcc63abb Y |
749 | spinlock_t list_lock; |
750 | struct list_head dead_list; | |
7b128766 | 751 | struct list_head orphan_list; |
62e2749e CM |
752 | }; |
753 | ||
1e1d2701 | 754 | /* |
0b86a832 | 755 | |
1e1d2701 CM |
756 | * inode items have the data typically returned from stat and store other |
757 | * info about object characteristics. There is one for every file and dir in | |
758 | * the FS | |
759 | */ | |
9078a3e1 | 760 | #define BTRFS_INODE_ITEM_KEY 1 |
3954401f CM |
761 | #define BTRFS_INODE_REF_KEY 2 |
762 | #define BTRFS_XATTR_ITEM_KEY 8 | |
7b128766 | 763 | #define BTRFS_ORPHAN_ITEM_KEY 9 |
9078a3e1 | 764 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
765 | |
766 | /* | |
767 | * dir items are the name -> inode pointers in a directory. There is one | |
768 | * for every name in a directory. | |
769 | */ | |
e02119d5 CM |
770 | #define BTRFS_DIR_LOG_ITEM_KEY 14 |
771 | #define BTRFS_DIR_LOG_INDEX_KEY 15 | |
9078a3e1 CM |
772 | #define BTRFS_DIR_ITEM_KEY 16 |
773 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 774 | /* |
9078a3e1 | 775 | * extent data is for file data |
1e1d2701 | 776 | */ |
9078a3e1 | 777 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
778 | /* |
779 | * csum items have the checksums for data in the extents | |
780 | */ | |
9078a3e1 CM |
781 | #define BTRFS_CSUM_ITEM_KEY 19 |
782 | ||
e02119d5 CM |
783 | |
784 | /* reserve 21-31 for other file/dir stuff */ | |
f254e52c | 785 | |
1e1d2701 CM |
786 | /* |
787 | * root items point to tree roots. There are typically in the root | |
788 | * tree used by the super block to find all the other trees | |
789 | */ | |
9078a3e1 | 790 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
791 | /* |
792 | * extent items are in the extent map tree. These record which blocks | |
793 | * are used, and how many references there are to each block | |
794 | */ | |
9078a3e1 | 795 | #define BTRFS_EXTENT_ITEM_KEY 33 |
74493f7a | 796 | #define BTRFS_EXTENT_REF_KEY 34 |
9078a3e1 CM |
797 | |
798 | /* | |
799 | * block groups give us hints into the extent allocation trees. Which | |
800 | * blocks are free etc etc | |
801 | */ | |
74493f7a | 802 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 50 |
9f5fae2f | 803 | |
0b86a832 CM |
804 | #define BTRFS_DEV_EXTENT_KEY 75 |
805 | #define BTRFS_DEV_ITEM_KEY 76 | |
806 | #define BTRFS_CHUNK_ITEM_KEY 77 | |
807 | ||
1e1d2701 CM |
808 | /* |
809 | * string items are for debugging. They just store a short string of | |
810 | * data in the FS | |
811 | */ | |
9078a3e1 CM |
812 | #define BTRFS_STRING_ITEM_KEY 253 |
813 | ||
21ad10cf CM |
814 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
815 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
816 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 817 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 818 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
b6cda9bc CM |
819 | |
820 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
821 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
822 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
823 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
824 | /* |
825 | * Inode flags | |
826 | */ | |
fdebe2bd Y |
827 | #define BTRFS_INODE_NODATASUM (1 << 0) |
828 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
829 | #define BTRFS_INODE_READONLY (1 << 2) | |
b98b6767 Y |
830 | #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \ |
831 | ~BTRFS_INODE_##flag) | |
832 | #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \ | |
833 | BTRFS_INODE_##flag) | |
834 | #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \ | |
835 | BTRFS_INODE_##flag) | |
5f39d397 CM |
836 | /* some macros to generate set/get funcs for the struct fields. This |
837 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
838 | * one for u8: | |
839 | */ | |
840 | #define le8_to_cpu(v) (v) | |
841 | #define cpu_to_le8(v) (v) | |
842 | #define __le8 u8 | |
843 | ||
844 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
845 | read_extent_buffer(eb, (char *)(result), \ | |
846 | ((unsigned long)(ptr)) + \ | |
847 | offsetof(type, member), \ | |
848 | sizeof(((type *)0)->member))) | |
849 | ||
850 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
851 | write_extent_buffer(eb, (char *)(result), \ | |
852 | ((unsigned long)(ptr)) + \ | |
853 | offsetof(type, member), \ | |
854 | sizeof(((type *)0)->member))) | |
855 | ||
0f82731f | 856 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 857 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
858 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
859 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
860 | #endif | |
5f39d397 CM |
861 | |
862 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
863 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
864 | { \ | |
df68b8a7 DM |
865 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
866 | u##bits res = le##bits##_to_cpu(p->member); \ | |
867 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 868 | return res; \ |
5f39d397 CM |
869 | } \ |
870 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
871 | u##bits val) \ | |
872 | { \ | |
df68b8a7 DM |
873 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
874 | p->member = cpu_to_le##bits(val); \ | |
875 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 876 | } |
9078a3e1 | 877 | |
5f39d397 CM |
878 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
879 | static inline u##bits btrfs_##name(type *s) \ | |
880 | { \ | |
881 | return le##bits##_to_cpu(s->member); \ | |
882 | } \ | |
883 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
884 | { \ | |
885 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
886 | } |
887 | ||
0b86a832 CM |
888 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
889 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
890 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
891 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
892 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
893 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); | |
894 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
895 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
896 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
897 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
0b86a832 | 898 | |
8a4b83cc CM |
899 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
900 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
901 | total_bytes, 64); | |
902 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
903 | bytes_used, 64); | |
904 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
905 | io_align, 32); | |
906 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
907 | io_width, 32); | |
908 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
909 | sector_size, 32); | |
910 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
911 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
912 | dev_group, 32); | |
913 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
914 | seek_speed, 8); | |
915 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
916 | bandwidth, 8); | |
8a4b83cc | 917 | |
0b86a832 CM |
918 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
919 | { | |
920 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
921 | } | |
922 | ||
e17cade2 | 923 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
924 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
925 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
926 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
927 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
928 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
929 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
930 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 931 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
932 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
933 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
934 | ||
e17cade2 CM |
935 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
936 | { | |
937 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
938 | } | |
939 | ||
940 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
941 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
942 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
943 | stripe_len, 64); | |
944 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
945 | io_align, 32); | |
946 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
947 | io_width, 32); | |
948 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
949 | sector_size, 32); | |
950 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
951 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
952 | num_stripes, 16); | |
321aecc6 CM |
953 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
954 | sub_stripes, 16); | |
0b86a832 CM |
955 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
956 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
957 | ||
958 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
959 | int nr) | |
960 | { | |
961 | unsigned long offset = (unsigned long)c; | |
962 | offset += offsetof(struct btrfs_chunk, stripe); | |
963 | offset += nr * sizeof(struct btrfs_stripe); | |
964 | return (struct btrfs_stripe *)offset; | |
965 | } | |
966 | ||
a443755f CM |
967 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
968 | { | |
969 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
970 | } | |
971 | ||
0b86a832 CM |
972 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
973 | struct btrfs_chunk *c, int nr) | |
974 | { | |
975 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
976 | } | |
977 | ||
978 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, | |
979 | struct btrfs_chunk *c, int nr, | |
980 | u64 val) | |
981 | { | |
982 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
983 | } | |
984 | ||
985 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, | |
986 | struct btrfs_chunk *c, int nr) | |
987 | { | |
988 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
989 | } | |
990 | ||
991 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, | |
992 | struct btrfs_chunk *c, int nr, | |
993 | u64 val) | |
994 | { | |
995 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
996 | } | |
997 | ||
5f39d397 CM |
998 | /* struct btrfs_block_group_item */ |
999 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1000 | used, 64); | |
1001 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1002 | used, 64); | |
0b86a832 CM |
1003 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1004 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1005 | |
1006 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1007 | struct btrfs_block_group_item, chunk_objectid, 64); |
1008 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1009 | struct btrfs_block_group_item, flags, 64); | |
1010 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1011 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1012 | |
3954401f CM |
1013 | /* struct btrfs_inode_ref */ |
1014 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1015 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1016 | |
5f39d397 CM |
1017 | /* struct btrfs_inode_item */ |
1018 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
e02119d5 | 1019 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 CM |
1020 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
1021 | BTRFS_SETGET_FUNCS(inode_nblocks, struct btrfs_inode_item, nblocks, 64); | |
1022 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); | |
1023 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1024 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1025 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1026 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1027 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
5f39d397 CM |
1028 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 16); |
1029 | BTRFS_SETGET_FUNCS(inode_compat_flags, struct btrfs_inode_item, | |
1030 | compat_flags, 16); | |
1e1d2701 | 1031 | |
0b86a832 | 1032 | static inline struct btrfs_timespec * |
5f39d397 | 1033 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1034 | { |
5f39d397 CM |
1035 | unsigned long ptr = (unsigned long)inode_item; |
1036 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1037 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1038 | } |
1039 | ||
0b86a832 | 1040 | static inline struct btrfs_timespec * |
5f39d397 | 1041 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1042 | { |
5f39d397 CM |
1043 | unsigned long ptr = (unsigned long)inode_item; |
1044 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1045 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1046 | } |
1047 | ||
0b86a832 | 1048 | static inline struct btrfs_timespec * |
5f39d397 | 1049 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1050 | { |
5f39d397 CM |
1051 | unsigned long ptr = (unsigned long)inode_item; |
1052 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1053 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1054 | } |
1055 | ||
0b86a832 | 1056 | static inline struct btrfs_timespec * |
5f39d397 | 1057 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1058 | { |
5f39d397 CM |
1059 | unsigned long ptr = (unsigned long)inode_item; |
1060 | ptr += offsetof(struct btrfs_inode_item, otime); | |
0b86a832 | 1061 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1062 | } |
1063 | ||
0b86a832 CM |
1064 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1065 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1066 | |
0b86a832 | 1067 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1068 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1069 | chunk_tree, 64); | |
1070 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1071 | chunk_objectid, 64); | |
1072 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1073 | chunk_offset, 64); | |
0b86a832 CM |
1074 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1075 | ||
e17cade2 CM |
1076 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1077 | { | |
1078 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1079 | return (u8 *)((unsigned long)dev + ptr); | |
1080 | } | |
1081 | ||
74493f7a CM |
1082 | /* struct btrfs_extent_ref */ |
1083 | BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64); | |
1084 | BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64); | |
1085 | BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64); | |
1086 | BTRFS_SETGET_FUNCS(ref_offset, struct btrfs_extent_ref, offset, 64); | |
31840ae1 | 1087 | BTRFS_SETGET_FUNCS(ref_num_refs, struct btrfs_extent_ref, num_refs, 32); |
74493f7a | 1088 | |
7bb86316 CM |
1089 | BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64); |
1090 | BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref, | |
74493f7a | 1091 | generation, 64); |
7bb86316 CM |
1092 | BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref, |
1093 | objectid, 64); | |
31840ae1 ZY |
1094 | BTRFS_SETGET_STACK_FUNCS(stack_ref_offset, struct btrfs_extent_ref, |
1095 | offset, 64); | |
1096 | BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs, struct btrfs_extent_ref, | |
1097 | num_refs, 32); | |
e20d96d6 | 1098 | |
31840ae1 ZY |
1099 | /* struct btrfs_extent_item */ |
1100 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32); | |
5f39d397 CM |
1101 | BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, |
1102 | refs, 32); | |
e20d96d6 | 1103 | |
5f39d397 CM |
1104 | /* struct btrfs_node */ |
1105 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1106 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1107 | |
5f39d397 | 1108 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1109 | { |
5f39d397 CM |
1110 | unsigned long ptr; |
1111 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1112 | sizeof(struct btrfs_key_ptr) * nr; | |
1113 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1114 | } |
1115 | ||
5f39d397 CM |
1116 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1117 | int nr, u64 val) | |
cf27e1ee | 1118 | { |
5f39d397 CM |
1119 | unsigned long ptr; |
1120 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1121 | sizeof(struct btrfs_key_ptr) * nr; | |
1122 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1123 | } |
1124 | ||
74493f7a CM |
1125 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1126 | { | |
1127 | unsigned long ptr; | |
1128 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1129 | sizeof(struct btrfs_key_ptr) * nr; | |
1130 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1131 | } | |
1132 | ||
1133 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1134 | int nr, u64 val) | |
1135 | { | |
1136 | unsigned long ptr; | |
1137 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1138 | sizeof(struct btrfs_key_ptr) * nr; | |
1139 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1140 | } | |
1141 | ||
810191ff | 1142 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1143 | { |
5f39d397 CM |
1144 | return offsetof(struct btrfs_node, ptrs) + |
1145 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1146 | } |
1147 | ||
e644d021 CM |
1148 | void btrfs_node_key(struct extent_buffer *eb, |
1149 | struct btrfs_disk_key *disk_key, int nr); | |
1150 | ||
5f39d397 CM |
1151 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1152 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1153 | { |
5f39d397 CM |
1154 | unsigned long ptr; |
1155 | ptr = btrfs_node_key_ptr_offset(nr); | |
1156 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1157 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1158 | } |
1159 | ||
5f39d397 CM |
1160 | /* struct btrfs_item */ |
1161 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1162 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1163 | |
5f39d397 | 1164 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1165 | { |
5f39d397 CM |
1166 | return offsetof(struct btrfs_leaf, items) + |
1167 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1168 | } |
1169 | ||
5f39d397 CM |
1170 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1171 | int nr) | |
0783fcfc | 1172 | { |
5f39d397 | 1173 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1174 | } |
1175 | ||
5f39d397 CM |
1176 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1177 | struct btrfs_item *item) | |
0783fcfc | 1178 | { |
5f39d397 | 1179 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1180 | } |
1181 | ||
5f39d397 | 1182 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1183 | { |
5f39d397 | 1184 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1185 | } |
1186 | ||
5f39d397 | 1187 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1188 | { |
5f39d397 | 1189 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1190 | } |
1191 | ||
5f39d397 | 1192 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1193 | { |
5f39d397 | 1194 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1195 | } |
1196 | ||
5f39d397 CM |
1197 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1198 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1199 | { |
5f39d397 CM |
1200 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1201 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1202 | } |
1203 | ||
5f39d397 CM |
1204 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1205 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1206 | { |
5f39d397 CM |
1207 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1208 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1209 | } |
1210 | ||
e02119d5 CM |
1211 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1212 | ||
5f39d397 | 1213 | /* struct btrfs_dir_item */ |
5103e947 | 1214 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1215 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1216 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1217 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1218 | |
5f39d397 CM |
1219 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1220 | struct btrfs_dir_item *item, | |
1221 | struct btrfs_disk_key *key) | |
1d4f6404 | 1222 | { |
5f39d397 | 1223 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1224 | } |
1225 | ||
5f39d397 CM |
1226 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1227 | struct btrfs_dir_item *item, | |
1228 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1229 | { |
5f39d397 | 1230 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1231 | } |
1232 | ||
5f39d397 CM |
1233 | /* struct btrfs_disk_key */ |
1234 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1235 | objectid, 64); | |
1236 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1237 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1238 | |
e2fa7227 CM |
1239 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1240 | struct btrfs_disk_key *disk) | |
1241 | { | |
1242 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1243 | cpu->type = disk->type; |
e2fa7227 CM |
1244 | cpu->objectid = le64_to_cpu(disk->objectid); |
1245 | } | |
1246 | ||
1247 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1248 | struct btrfs_key *cpu) | |
1249 | { | |
1250 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1251 | disk->type = cpu->type; |
e2fa7227 CM |
1252 | disk->objectid = cpu_to_le64(cpu->objectid); |
1253 | } | |
1254 | ||
5f39d397 CM |
1255 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1256 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1257 | { |
5f39d397 CM |
1258 | struct btrfs_disk_key disk_key; |
1259 | btrfs_node_key(eb, &disk_key, nr); | |
1260 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1261 | } |
1262 | ||
5f39d397 CM |
1263 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1264 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1265 | { |
5f39d397 CM |
1266 | struct btrfs_disk_key disk_key; |
1267 | btrfs_item_key(eb, &disk_key, nr); | |
1268 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1269 | } |
1270 | ||
5f39d397 CM |
1271 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1272 | struct btrfs_dir_item *item, | |
1273 | struct btrfs_key *key) | |
4d775673 | 1274 | { |
5f39d397 CM |
1275 | struct btrfs_disk_key disk_key; |
1276 | btrfs_dir_item_key(eb, item, &disk_key); | |
1277 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1278 | } |
1279 | ||
58176a96 | 1280 | |
5f39d397 | 1281 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1282 | { |
5f39d397 | 1283 | return key->type; |
3768f368 CM |
1284 | } |
1285 | ||
5f39d397 | 1286 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1287 | { |
5f39d397 | 1288 | key->type = val; |
3768f368 CM |
1289 | } |
1290 | ||
5f39d397 | 1291 | /* struct btrfs_header */ |
db94535d | 1292 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1293 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1294 | generation, 64); | |
1295 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1296 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1297 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1298 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1299 | |
63b10fc4 CM |
1300 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1301 | { | |
1302 | return (btrfs_header_flags(eb) & flag) == flag; | |
1303 | } | |
1304 | ||
1305 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1306 | { | |
1307 | u64 flags = btrfs_header_flags(eb); | |
1308 | btrfs_set_header_flags(eb, flags | flag); | |
1309 | return (flags & flag) == flag; | |
1310 | } | |
1311 | ||
1312 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1313 | { | |
1314 | u64 flags = btrfs_header_flags(eb); | |
1315 | btrfs_set_header_flags(eb, flags & ~flag); | |
1316 | return (flags & flag) == flag; | |
1317 | } | |
1318 | ||
5f39d397 | 1319 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1320 | { |
5f39d397 CM |
1321 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1322 | return (u8 *)ptr; | |
0f7d52f4 CM |
1323 | } |
1324 | ||
e17cade2 CM |
1325 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1326 | { | |
1327 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1328 | return (u8 *)ptr; | |
1329 | } | |
1330 | ||
5f39d397 | 1331 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 1332 | { |
5f39d397 CM |
1333 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
1334 | return (u8 *)ptr; | |
3768f368 CM |
1335 | } |
1336 | ||
5f39d397 | 1337 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 1338 | { |
5f39d397 CM |
1339 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
1340 | return (u8 *)ptr; | |
3768f368 CM |
1341 | } |
1342 | ||
5f39d397 | 1343 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 1344 | { |
5f39d397 | 1345 | return NULL; |
3768f368 CM |
1346 | } |
1347 | ||
5f39d397 | 1348 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 1349 | { |
5f39d397 | 1350 | return NULL; |
3768f368 CM |
1351 | } |
1352 | ||
5f39d397 | 1353 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 1354 | { |
5f39d397 | 1355 | return NULL; |
3768f368 CM |
1356 | } |
1357 | ||
5f39d397 | 1358 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1359 | { |
5f39d397 | 1360 | return (btrfs_header_level(eb) == 0); |
3768f368 CM |
1361 | } |
1362 | ||
5f39d397 CM |
1363 | /* struct btrfs_root_item */ |
1364 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); | |
db94535d CM |
1365 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1366 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1367 | |
db94535d CM |
1368 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1369 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1370 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1371 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
1372 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 32); | |
db94535d CM |
1373 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1374 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
123abc88 | 1375 | |
5f39d397 | 1376 | /* struct btrfs_super_block */ |
db94535d | 1377 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1378 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1379 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1380 | generation, 64); | |
1381 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1382 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1383 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
db94535d CM |
1384 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1385 | root_level, 8); | |
0b86a832 CM |
1386 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1387 | chunk_root, 64); | |
1388 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
1389 | chunk_root_level, 8); |
1390 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
1391 | log_root, 64); | |
1392 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, | |
1393 | log_root_level, 8); | |
db94535d CM |
1394 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1395 | total_bytes, 64); | |
1396 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1397 | bytes_used, 64); | |
5f39d397 CM |
1398 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1399 | sectorsize, 32); | |
1400 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1401 | nodesize, 32); | |
1402 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1403 | leafsize, 32); | |
87ee04eb CM |
1404 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1405 | stripesize, 32); | |
5f39d397 CM |
1406 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1407 | root_dir_objectid, 64); | |
8a4b83cc CM |
1408 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1409 | num_devices, 64); | |
2e635a27 | 1410 | |
5f39d397 | 1411 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 1412 | { |
5f39d397 | 1413 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
1414 | } |
1415 | ||
5f39d397 CM |
1416 | /* struct btrfs_file_extent_item */ |
1417 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 1418 | |
5f39d397 | 1419 | static inline unsigned long btrfs_file_extent_inline_start(struct |
236454df CM |
1420 | btrfs_file_extent_item *e) |
1421 | { | |
5f39d397 | 1422 | unsigned long offset = (unsigned long)e; |
db94535d | 1423 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1424 | return offset; |
236454df CM |
1425 | } |
1426 | ||
1427 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
1428 | { | |
db94535d | 1429 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
1430 | } |
1431 | ||
5f39d397 CM |
1432 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, |
1433 | struct btrfs_item *e) | |
9f5fae2f | 1434 | { |
5f39d397 | 1435 | unsigned long offset; |
db94535d | 1436 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1437 | return btrfs_item_size(eb, e) - offset; |
9f5fae2f CM |
1438 | } |
1439 | ||
db94535d CM |
1440 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
1441 | disk_bytenr, 64); | |
5f39d397 CM |
1442 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
1443 | generation, 64); | |
db94535d CM |
1444 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
1445 | disk_num_bytes, 64); | |
5f39d397 CM |
1446 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
1447 | offset, 64); | |
db94535d CM |
1448 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
1449 | num_bytes, 64); | |
9f5fae2f | 1450 | |
e20d96d6 CM |
1451 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1452 | { | |
1453 | return sb->s_fs_info; | |
1454 | } | |
1455 | ||
58176a96 JB |
1456 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
1457 | const char *name, int len) | |
1458 | { | |
1459 | /* if we already have a name just free it */ | |
1460 | if (root->name) | |
1461 | kfree(root->name); | |
1462 | ||
1463 | root->name = kmalloc(len+1, GFP_KERNEL); | |
1464 | if (!root->name) | |
1465 | return -ENOMEM; | |
1466 | ||
1467 | memcpy(root->name, name, len); | |
1468 | root->name[len] ='\0'; | |
1469 | ||
1470 | return 0; | |
1471 | } | |
1472 | ||
db94535d CM |
1473 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) { |
1474 | if (level == 0) | |
1475 | return root->leafsize; | |
1476 | return root->nodesize; | |
1477 | } | |
1478 | ||
4beb1b8b CM |
1479 | /* helper function to cast into the data area of the leaf. */ |
1480 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 1481 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
1482 | btrfs_item_offset_nr(leaf, slot))) |
1483 | ||
1484 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
1485 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
1486 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 1487 | |
2b1f55b0 CM |
1488 | static inline struct dentry *fdentry(struct file *file) |
1489 | { | |
6da6abae | 1490 | return file->f_path.dentry; |
6da6abae CM |
1491 | } |
1492 | ||
b18c6685 | 1493 | /* extent-tree.c */ |
31840ae1 | 1494 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
5b21f2ed ZY |
1495 | int btrfs_lookup_extent_ref(struct btrfs_trans_handle *trans, |
1496 | struct btrfs_root *root, u64 bytenr, | |
1497 | u64 num_bytes, u32 *refs); | |
e02119d5 CM |
1498 | int btrfs_update_pinned_extents(struct btrfs_root *root, |
1499 | u64 bytenr, u64 num, int pin); | |
1500 | int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans, | |
1501 | struct btrfs_root *root, struct extent_buffer *leaf); | |
7ea394f1 YZ |
1502 | int btrfs_cross_ref_exists(struct btrfs_trans_handle *trans, |
1503 | struct btrfs_root *root, | |
f321e491 | 1504 | struct btrfs_key *key, u64 bytenr); |
e9d0b13b CM |
1505 | int btrfs_extent_post_op(struct btrfs_trans_handle *trans, |
1506 | struct btrfs_root *root); | |
d1310b2e | 1507 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); |
5276aeda CM |
1508 | struct btrfs_block_group_cache *btrfs_lookup_block_group(struct |
1509 | btrfs_fs_info *info, | |
db94535d | 1510 | u64 bytenr); |
31f3c99b CM |
1511 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1512 | struct btrfs_block_group_cache | |
be744175 | 1513 | *hint, u64 search_start, |
de428b63 | 1514 | int data, int owner); |
5f39d397 | 1515 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
7bb86316 | 1516 | struct btrfs_root *root, |
31840ae1 | 1517 | u32 blocksize, u64 parent, |
7bb86316 CM |
1518 | u64 root_objectid, |
1519 | u64 ref_generation, | |
7bb86316 CM |
1520 | int level, |
1521 | u64 hint, | |
1522 | u64 empty_size); | |
65b51a00 CM |
1523 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
1524 | struct btrfs_root *root, | |
1525 | u64 bytenr, u32 blocksize); | |
7bb86316 CM |
1526 | int btrfs_insert_extent_backref(struct btrfs_trans_handle *trans, |
1527 | struct btrfs_root *root, | |
31840ae1 ZY |
1528 | struct btrfs_path *path, |
1529 | u64 bytenr, u64 parent, | |
7bb86316 CM |
1530 | u64 root_objectid, u64 ref_generation, |
1531 | u64 owner, u64 owner_offset); | |
4d775673 | 1532 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
7bb86316 | 1533 | struct btrfs_root *root, |
31840ae1 | 1534 | u64 num_bytes, u64 parent, u64 min_bytes, |
98d20f67 | 1535 | u64 root_objectid, u64 ref_generation, |
7bb86316 CM |
1536 | u64 owner, u64 owner_offset, |
1537 | u64 empty_size, u64 hint_byte, | |
ec44a35c | 1538 | u64 search_end, struct btrfs_key *ins, u64 data); |
e6dcd2dc | 1539 | int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1540 | struct btrfs_root *root, u64 parent, |
e6dcd2dc CM |
1541 | u64 root_objectid, u64 ref_generation, |
1542 | u64 owner, u64 owner_offset, | |
1543 | struct btrfs_key *ins); | |
e02119d5 | 1544 | int btrfs_alloc_logged_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1545 | struct btrfs_root *root, u64 parent, |
e02119d5 CM |
1546 | u64 root_objectid, u64 ref_generation, |
1547 | u64 owner, u64 owner_offset, | |
1548 | struct btrfs_key *ins); | |
e6dcd2dc CM |
1549 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
1550 | struct btrfs_root *root, | |
1551 | u64 num_bytes, u64 min_alloc_size, | |
1552 | u64 empty_size, u64 hint_byte, | |
1553 | u64 search_end, struct btrfs_key *ins, | |
1554 | u64 data); | |
e089f05c | 1555 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
31840ae1 ZY |
1556 | struct extent_buffer *orig_buf, struct extent_buffer *buf, |
1557 | u32 *nr_extents); | |
1558 | int btrfs_cache_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
1559 | struct extent_buffer *buf, u32 nr_extents); | |
1560 | int btrfs_update_ref(struct btrfs_trans_handle *trans, | |
1561 | struct btrfs_root *root, struct extent_buffer *orig_buf, | |
1562 | struct extent_buffer *buf, int start_slot, int nr); | |
1563 | int btrfs_free_extent(struct btrfs_trans_handle *trans, | |
1564 | struct btrfs_root *root, | |
1565 | u64 bytenr, u64 num_bytes, u64 parent, | |
7bb86316 CM |
1566 | u64 root_objectid, u64 ref_generation, |
1567 | u64 owner_objectid, u64 owner_offset, int pin); | |
65b51a00 | 1568 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
ccd467d6 CM |
1569 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
1570 | struct btrfs_root *root, | |
d1310b2e | 1571 | struct extent_io_tree *unpin); |
b18c6685 | 1572 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
1573 | struct btrfs_root *root, |
1574 | u64 bytenr, u64 num_bytes, u64 parent, | |
1575 | u64 root_objectid, u64 ref_generation, | |
1576 | u64 owner, u64 owner_offset); | |
1577 | int btrfs_update_extent_ref(struct btrfs_trans_handle *trans, | |
1578 | struct btrfs_root *root, u64 bytenr, | |
1579 | u64 orig_parent, u64 parent, | |
1580 | u64 root_objectid, u64 ref_generation, | |
1581 | u64 owner, u64 owner_offset); | |
9078a3e1 CM |
1582 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1583 | struct btrfs_root *root); | |
1584 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1585 | int btrfs_read_block_groups(struct btrfs_root *root); | |
0b86a832 CM |
1586 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
1587 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 1588 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 1589 | u64 size); |
1a40e23b ZY |
1590 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
1591 | struct btrfs_root *root, u64 group_start); | |
1592 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
1593 | int btrfs_free_reloc_root(struct btrfs_root *root); | |
1594 | int btrfs_drop_dead_reloc_roots(struct btrfs_root *root); | |
1595 | int btrfs_add_reloc_mapping(struct btrfs_root *root, u64 orig_bytenr, | |
1596 | u64 num_bytes, u64 new_bytenr); | |
1597 | int btrfs_get_reloc_mapping(struct btrfs_root *root, u64 orig_bytenr, | |
1598 | u64 num_bytes, u64 *new_bytenr); | |
1599 | void btrfs_free_reloc_mappings(struct btrfs_root *root); | |
1600 | int btrfs_reloc_tree_cache_ref(struct btrfs_trans_handle *trans, | |
1601 | struct btrfs_root *root, | |
1602 | struct extent_buffer *buf, u64 orig_start); | |
1603 | int btrfs_add_dead_reloc_root(struct btrfs_root *root); | |
1604 | int btrfs_cleanup_reloc_trees(struct btrfs_root *root); | |
dee26a9f | 1605 | /* ctree.c */ |
0b86a832 CM |
1606 | int btrfs_previous_item(struct btrfs_root *root, |
1607 | struct btrfs_path *path, u64 min_objectid, | |
1608 | int type); | |
1a40e23b ZY |
1609 | int btrfs_merge_path(struct btrfs_trans_handle *trans, |
1610 | struct btrfs_root *root, | |
1611 | struct btrfs_key *node_keys, | |
1612 | u64 *nodes, int lowest_level); | |
31840ae1 ZY |
1613 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
1614 | struct btrfs_root *root, struct btrfs_path *path, | |
1615 | struct btrfs_key *new_key); | |
925baedd CM |
1616 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
1617 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 1618 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
1619 | struct btrfs_key *key, int lowest_level, |
1620 | int cache_only, u64 min_trans); | |
1621 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 1622 | struct btrfs_key *max_key, |
3f157a2f CM |
1623 | struct btrfs_path *path, int cache_only, |
1624 | u64 min_trans); | |
5f39d397 CM |
1625 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
1626 | struct btrfs_root *root, struct extent_buffer *buf, | |
1627 | struct extent_buffer *parent, int parent_slot, | |
65b51a00 | 1628 | struct extent_buffer **cow_ret, u64 prealloc_dest); |
be20aa9d CM |
1629 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
1630 | struct btrfs_root *root, | |
1631 | struct extent_buffer *buf, | |
1632 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
6567e837 CM |
1633 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1634 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1635 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1636 | struct btrfs_root *root, | |
1637 | struct btrfs_path *path, | |
179e29e4 | 1638 | u32 new_size, int from_end); |
e089f05c CM |
1639 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1640 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1641 | ins_len, int cow); | |
6702ed49 | 1642 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 1643 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
1644 | int start_slot, int cache_only, u64 *last_ret, |
1645 | struct btrfs_key *progress); | |
234b63a0 | 1646 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1647 | struct btrfs_path *btrfs_alloc_path(void); |
1648 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1649 | void btrfs_init_path(struct btrfs_path *p); |
85e21bac CM |
1650 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1651 | struct btrfs_path *path, int slot, int nr); | |
323ac95b CM |
1652 | int btrfs_del_leaf(struct btrfs_trans_handle *trans, |
1653 | struct btrfs_root *root, | |
1654 | struct btrfs_path *path, u64 bytenr); | |
85e21bac CM |
1655 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
1656 | struct btrfs_root *root, | |
1657 | struct btrfs_path *path) | |
1658 | { | |
1659 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
1660 | } | |
1661 | ||
e089f05c CM |
1662 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1663 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
1664 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
1665 | struct btrfs_root *root, | |
1666 | struct btrfs_path *path, | |
1667 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
1668 | ||
1669 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
1670 | struct btrfs_root *root, | |
1671 | struct btrfs_path *path, | |
1672 | struct btrfs_key *key, | |
1673 | u32 data_size) | |
1674 | { | |
1675 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
1676 | } | |
1677 | ||
234b63a0 | 1678 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 1679 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 1680 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
e089f05c | 1681 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
9f3a7427 | 1682 | *root); |
dee26a9f | 1683 | /* root-item.c */ |
e089f05c CM |
1684 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1685 | struct btrfs_key *key); | |
1686 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1687 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1688 | *item); | |
1689 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1690 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1691 | *item); | |
1692 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1693 | btrfs_root_item *item, struct btrfs_key *key); | |
bf4ef679 CM |
1694 | int btrfs_search_root(struct btrfs_root *root, u64 search_start, |
1695 | u64 *found_objectid); | |
5ce14bbc CM |
1696 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, |
1697 | struct btrfs_root *latest_root); | |
dee26a9f | 1698 | /* dir-item.c */ |
e089f05c | 1699 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 | 1700 | *root, const char *name, int name_len, u64 dir, |
aec7477b | 1701 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
1702 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1703 | struct btrfs_root *root, | |
1704 | struct btrfs_path *path, u64 dir, | |
1705 | const char *name, int name_len, | |
1706 | int mod); | |
1707 | struct btrfs_dir_item * | |
1708 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1709 | struct btrfs_root *root, | |
1710 | struct btrfs_path *path, u64 dir, | |
1711 | u64 objectid, const char *name, int name_len, | |
1712 | int mod); | |
1713 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1714 | struct btrfs_path *path, | |
7f5c1516 | 1715 | const char *name, int name_len); |
7e38180e CM |
1716 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1717 | struct btrfs_root *root, | |
1718 | struct btrfs_path *path, | |
1719 | struct btrfs_dir_item *di); | |
5103e947 JB |
1720 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
1721 | struct btrfs_root *root, const char *name, | |
1722 | u16 name_len, const void *data, u16 data_len, | |
1723 | u64 dir); | |
1724 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, | |
1725 | struct btrfs_root *root, | |
1726 | struct btrfs_path *path, u64 dir, | |
1727 | const char *name, u16 name_len, | |
1728 | int mod); | |
7b128766 JB |
1729 | |
1730 | /* orphan.c */ | |
1731 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
1732 | struct btrfs_root *root, u64 offset); | |
1733 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
1734 | struct btrfs_root *root, u64 offset); | |
1735 | ||
dee26a9f | 1736 | /* inode-map.c */ |
9f5fae2f CM |
1737 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1738 | struct btrfs_root *fs_root, | |
1739 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1740 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1741 | ||
dee26a9f | 1742 | /* inode-item.c */ |
3954401f CM |
1743 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
1744 | struct btrfs_root *root, | |
1745 | const char *name, int name_len, | |
aec7477b | 1746 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
1747 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
1748 | struct btrfs_root *root, | |
1749 | const char *name, int name_len, | |
aec7477b | 1750 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
1751 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
1752 | struct btrfs_root *root, | |
1753 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 1754 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1755 | *root, struct btrfs_path *path, |
1756 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1757 | |
1758 | /* file-item.c */ | |
61b49440 CM |
1759 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
1760 | struct bio *bio); | |
b18c6685 | 1761 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1762 | struct btrfs_root *root, |
f2eb0a24 | 1763 | u64 objectid, u64 pos, u64 disk_offset, |
db94535d | 1764 | u64 disk_num_bytes, |
f2eb0a24 | 1765 | u64 num_bytes, u64 offset); |
dee26a9f CM |
1766 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1767 | struct btrfs_root *root, | |
1768 | struct btrfs_path *path, u64 objectid, | |
db94535d | 1769 | u64 bytenr, int mod); |
065631f6 CM |
1770 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
1771 | struct btrfs_root *root, struct inode *inode, | |
e6dcd2dc | 1772 | struct btrfs_ordered_sum *sums); |
3edf7d33 CM |
1773 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
1774 | struct bio *bio); | |
b18c6685 CM |
1775 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1776 | struct btrfs_root *root, | |
1777 | struct btrfs_path *path, | |
1778 | u64 objectid, u64 offset, | |
1779 | int cow); | |
1de037a4 CM |
1780 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1781 | struct btrfs_root *root, struct btrfs_path *path, | |
1782 | u64 isize); | |
39279cc3 | 1783 | /* inode.c */ |
4881ee5a CM |
1784 | |
1785 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 1786 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
1787 | #define ClearPageChecked ClearPageFsMisc |
1788 | #define SetPageChecked SetPageFsMisc | |
1789 | #define PageChecked PageFsMisc | |
1790 | #endif | |
1791 | ||
e02119d5 CM |
1792 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
1793 | struct btrfs_root *root, | |
1794 | struct inode *dir, struct inode *inode, | |
1795 | const char *name, int name_len); | |
1796 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
1797 | struct inode *parent_inode, struct inode *inode, | |
1798 | const char *name, int name_len, int add_backref, u64 index); | |
1799 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, | |
1800 | struct btrfs_root *root, | |
1801 | struct inode *inode, u64 new_size, | |
1802 | u32 min_type); | |
1803 | ||
ea8c2819 CM |
1804 | int btrfs_start_delalloc_inodes(struct btrfs_root *root); |
1805 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end); | |
f421950f CM |
1806 | int btrfs_writepages(struct address_space *mapping, |
1807 | struct writeback_control *wbc); | |
f46b5a66 CH |
1808 | int btrfs_create_subvol_root(struct btrfs_root *new_root, |
1809 | struct btrfs_trans_handle *trans, u64 new_dirid, | |
1810 | struct btrfs_block_group_cache *block_group); | |
1811 | ||
3b96362c SW |
1812 | void btrfs_invalidate_dcache_root(struct btrfs_root *root, char *name, |
1813 | int namelen); | |
1814 | ||
239b14b3 CM |
1815 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
1816 | size_t size, struct bio *bio); | |
1817 | ||
9069218d CM |
1818 | static inline void dec_i_blocks(struct inode *inode, u64 dec) |
1819 | { | |
1820 | dec = dec >> 9; | |
1821 | if (dec <= inode->i_blocks) | |
1822 | inode->i_blocks -= dec; | |
1823 | else | |
1824 | inode->i_blocks = 0; | |
1825 | } | |
1826 | ||
edbd8d4e CM |
1827 | unsigned long btrfs_force_ra(struct address_space *mapping, |
1828 | struct file_ra_state *ra, struct file *file, | |
1829 | pgoff_t offset, pgoff_t last_index); | |
1832a6d5 CM |
1830 | int btrfs_check_free_space(struct btrfs_root *root, u64 num_required, |
1831 | int for_del); | |
9ebefb18 CM |
1832 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page); |
1833 | int btrfs_readpage(struct file *file, struct page *page); | |
39279cc3 | 1834 | void btrfs_delete_inode(struct inode *inode); |
2da98f00 | 1835 | void btrfs_put_inode(struct inode *inode); |
39279cc3 CM |
1836 | void btrfs_read_locked_inode(struct inode *inode); |
1837 | int btrfs_write_inode(struct inode *inode, int wait); | |
1838 | void btrfs_dirty_inode(struct inode *inode); | |
1839 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
1840 | void btrfs_destroy_inode(struct inode *inode); | |
1841 | int btrfs_init_cachep(void); | |
1842 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 1843 | long btrfs_ioctl_trans_end(struct file *file); |
5b21f2ed ZY |
1844 | struct inode *btrfs_ilookup(struct super_block *s, u64 objectid, |
1845 | struct btrfs_root *root, int wait); | |
39279cc3 CM |
1846 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, |
1847 | struct btrfs_root *root); | |
1a54ef8c BR |
1848 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
1849 | struct btrfs_root *root, int *is_new); | |
39279cc3 CM |
1850 | int btrfs_commit_write(struct file *file, struct page *page, |
1851 | unsigned from, unsigned to); | |
a52d9a80 CM |
1852 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
1853 | size_t page_offset, u64 start, u64 end, | |
1854 | int create); | |
1855 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
1856 | struct btrfs_root *root, | |
1857 | struct inode *inode); | |
5b21f2ed ZY |
1858 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
1859 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
1860 | void btrfs_orphan_cleanup(struct btrfs_root *root); | |
f46b5a66 CH |
1861 | |
1862 | /* ioctl.c */ | |
1863 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
1864 | ||
39279cc3 | 1865 | /* file.c */ |
e02119d5 | 1866 | int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync); |
5b21f2ed ZY |
1867 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
1868 | int skip_pinned); | |
5f56406a | 1869 | int btrfs_check_file(struct btrfs_root *root, struct inode *inode); |
39279cc3 CM |
1870 | extern struct file_operations btrfs_file_operations; |
1871 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
1872 | struct btrfs_root *root, struct inode *inode, | |
00f5c795 | 1873 | u64 start, u64 end, u64 inline_limit, u64 *hint_block); |
6bf13c0c SW |
1874 | int btrfs_release_file(struct inode *inode, struct file *file); |
1875 | ||
6702ed49 CM |
1876 | /* tree-defrag.c */ |
1877 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
1878 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
1879 | |
1880 | /* sysfs.c */ | |
1881 | int btrfs_init_sysfs(void); | |
1882 | void btrfs_exit_sysfs(void); | |
1883 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
1884 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
1885 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
1886 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
1887 | ||
5103e947 JB |
1888 | /* xattr.c */ |
1889 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 1890 | |
edbd8d4e CM |
1891 | /* super.c */ |
1892 | u64 btrfs_parse_size(char *str); | |
edf24abe | 1893 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 1894 | int btrfs_sync_fs(struct super_block *sb, int wait); |
33268eaf JB |
1895 | |
1896 | /* acl.c */ | |
1897 | int btrfs_check_acl(struct inode *inode, int mask); | |
1898 | int btrfs_init_acl(struct inode *inode, struct inode *dir); | |
1899 | int btrfs_acl_chmod(struct inode *inode); | |
0f9dd46c JB |
1900 | |
1901 | /* free-space-cache.c */ | |
1902 | int btrfs_add_free_space(struct btrfs_block_group_cache *block_group, | |
1903 | u64 bytenr, u64 size); | |
1904 | int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group, | |
1905 | u64 bytenr, u64 size); | |
1906 | void btrfs_remove_free_space_cache(struct btrfs_block_group_cache | |
1907 | *block_group); | |
1908 | struct btrfs_free_space *btrfs_find_free_space(struct btrfs_block_group_cache | |
1909 | *block_group, u64 offset, | |
1910 | u64 bytes); | |
1911 | void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group, | |
1912 | u64 bytes); | |
1913 | u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group); | |
eb60ceac | 1914 | #endif |