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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> |
8ef97622 | 30 | #include "bit-radix.h" |
d1310b2e | 31 | #include "extent_io.h" |
5f39d397 | 32 | #include "extent_map.h" |
8b712842 | 33 | #include "async-thread.h" |
e20d96d6 | 34 | |
e089f05c | 35 | struct btrfs_trans_handle; |
79154b1b | 36 | struct btrfs_transaction; |
35b7e476 CM |
37 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
38 | extern struct kmem_cache *btrfs_transaction_cachep; | |
39 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 40 | extern struct kmem_cache *btrfs_path_cachep; |
e6dcd2dc | 41 | struct btrfs_ordered_sum; |
e089f05c | 42 | |
31840ae1 | 43 | #define BTRFS_MAGIC "_B9RfS_M" |
eb60ceac | 44 | |
33268eaf JB |
45 | #define BTRFS_ACL_NOT_CACHED ((void *)-1) |
46 | ||
6dddcbeb CM |
47 | #ifdef CONFIG_LOCKDEP |
48 | # define BTRFS_MAX_LEVEL 7 | |
49 | #else | |
50 | # define BTRFS_MAX_LEVEL 8 | |
51 | #endif | |
0b86a832 CM |
52 | |
53 | /* holds pointers to all of the tree roots */ | |
6407bf6d | 54 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
55 | |
56 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 57 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 58 | |
0b86a832 CM |
59 | /* |
60 | * chunk tree stores translations from logical -> physical block numbering | |
61 | * the super block points to the chunk tree | |
62 | */ | |
e085def2 | 63 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
64 | |
65 | /* | |
66 | * stores information about which areas of a given device are in use. | |
67 | * one per device. The tree of tree roots points to the device tree | |
68 | */ | |
e085def2 CM |
69 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
70 | ||
71 | /* one per subvolume, storing files and directories */ | |
72 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
73 | ||
74 | /* directory objectid inside the root tree */ | |
75 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 76 | |
7b128766 JB |
77 | /* orhpan objectid for tracking unlinked/truncated files */ |
78 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
79 | ||
e02119d5 CM |
80 | /* does write ahead logging to speed up fsyncs */ |
81 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
82 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
83 | ||
e4657689 ZY |
84 | /* for space balancing */ |
85 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
86 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
87 | ||
31840ae1 ZY |
88 | /* dummy objectid represents multiple objectids */ |
89 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
90 | ||
0b86a832 | 91 | /* |
6527cdbe | 92 | * All files have objectids in this range. |
0b86a832 | 93 | */ |
f6dbff55 | 94 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 95 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 96 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 97 | |
0b86a832 CM |
98 | |
99 | /* | |
100 | * the device items go into the chunk tree. The key is in the form | |
101 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
102 | */ | |
103 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
104 | ||
e20d96d6 CM |
105 | /* |
106 | * we can actually store much bigger names, but lets not confuse the rest | |
107 | * of linux | |
108 | */ | |
109 | #define BTRFS_NAME_LEN 255 | |
110 | ||
f254e52c CM |
111 | /* 32 bytes in various csum fields */ |
112 | #define BTRFS_CSUM_SIZE 32 | |
509659cd CM |
113 | /* four bytes for CRC32 */ |
114 | #define BTRFS_CRC32_SIZE 4 | |
3954401f | 115 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 116 | |
fabb5681 CM |
117 | #define BTRFS_FT_UNKNOWN 0 |
118 | #define BTRFS_FT_REG_FILE 1 | |
119 | #define BTRFS_FT_DIR 2 | |
120 | #define BTRFS_FT_CHRDEV 3 | |
121 | #define BTRFS_FT_BLKDEV 4 | |
122 | #define BTRFS_FT_FIFO 5 | |
123 | #define BTRFS_FT_SOCK 6 | |
124 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
125 | #define BTRFS_FT_XATTR 8 |
126 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 127 | |
fec577fb CM |
128 | /* |
129 | * the key defines the order in the tree, and so it also defines (optimal) | |
130 | * block layout. objectid corresonds to the inode number. The flags | |
131 | * tells us things about the object, and is a kind of stream selector. | |
132 | * so for a given inode, keys with flags of 1 might refer to the inode | |
133 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
134 | * may point to extents. | |
135 | * | |
136 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
137 | * |
138 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
139 | * in cpu native order. Otherwise they are identical and their sizes | |
140 | * should be the same (ie both packed) | |
fec577fb | 141 | */ |
e2fa7227 CM |
142 | struct btrfs_disk_key { |
143 | __le64 objectid; | |
5f39d397 | 144 | u8 type; |
70b2befd | 145 | __le64 offset; |
e2fa7227 CM |
146 | } __attribute__ ((__packed__)); |
147 | ||
148 | struct btrfs_key { | |
eb60ceac | 149 | u64 objectid; |
5f39d397 | 150 | u8 type; |
70b2befd | 151 | u64 offset; |
eb60ceac CM |
152 | } __attribute__ ((__packed__)); |
153 | ||
0b86a832 CM |
154 | struct btrfs_mapping_tree { |
155 | struct extent_map_tree map_tree; | |
156 | }; | |
157 | ||
e17cade2 | 158 | #define BTRFS_UUID_SIZE 16 |
0b86a832 CM |
159 | struct btrfs_dev_item { |
160 | /* the internal btrfs device id */ | |
161 | __le64 devid; | |
162 | ||
163 | /* size of the device */ | |
164 | __le64 total_bytes; | |
165 | ||
166 | /* bytes used */ | |
167 | __le64 bytes_used; | |
168 | ||
169 | /* optimal io alignment for this device */ | |
170 | __le32 io_align; | |
171 | ||
172 | /* optimal io width for this device */ | |
173 | __le32 io_width; | |
174 | ||
175 | /* minimal io size for this device */ | |
176 | __le32 sector_size; | |
177 | ||
0b86a832 CM |
178 | /* type and info about this device */ |
179 | __le64 type; | |
180 | ||
e17cade2 CM |
181 | /* grouping information for allocation decisions */ |
182 | __le32 dev_group; | |
183 | ||
184 | /* seek speed 0-100 where 100 is fastest */ | |
185 | u8 seek_speed; | |
186 | ||
187 | /* bandwidth 0-100 where 100 is fastest */ | |
188 | u8 bandwidth; | |
189 | ||
0d81ba5d | 190 | /* btrfs generated uuid for this device */ |
e17cade2 | 191 | u8 uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
192 | } __attribute__ ((__packed__)); |
193 | ||
194 | struct btrfs_stripe { | |
195 | __le64 devid; | |
196 | __le64 offset; | |
e17cade2 | 197 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
198 | } __attribute__ ((__packed__)); |
199 | ||
200 | struct btrfs_chunk { | |
e17cade2 CM |
201 | /* size of this chunk in bytes */ |
202 | __le64 length; | |
203 | ||
204 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 205 | __le64 owner; |
e17cade2 | 206 | |
0b86a832 CM |
207 | __le64 stripe_len; |
208 | __le64 type; | |
209 | ||
210 | /* optimal io alignment for this chunk */ | |
211 | __le32 io_align; | |
212 | ||
213 | /* optimal io width for this chunk */ | |
214 | __le32 io_width; | |
215 | ||
216 | /* minimal io size for this chunk */ | |
217 | __le32 sector_size; | |
218 | ||
219 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
220 | * item in the btree | |
221 | */ | |
222 | __le16 num_stripes; | |
321aecc6 CM |
223 | |
224 | /* sub stripes only matter for raid10 */ | |
225 | __le16 sub_stripes; | |
0b86a832 CM |
226 | struct btrfs_stripe stripe; |
227 | /* additional stripes go here */ | |
228 | } __attribute__ ((__packed__)); | |
229 | ||
230 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) | |
231 | { | |
232 | BUG_ON(num_stripes == 0); | |
233 | return sizeof(struct btrfs_chunk) + | |
234 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
235 | } | |
236 | ||
5f39d397 | 237 | #define BTRFS_FSID_SIZE 16 |
63b10fc4 CM |
238 | #define BTRFS_HEADER_FLAG_WRITTEN (1 << 0) |
239 | ||
fec577fb CM |
240 | /* |
241 | * every tree block (leaf or node) starts with this header. | |
242 | */ | |
bb492bb0 | 243 | struct btrfs_header { |
e17cade2 | 244 | /* these first four must match the super block */ |
f254e52c | 245 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 246 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 247 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 248 | __le64 flags; |
e17cade2 CM |
249 | |
250 | /* allowed to be different from the super from here on down */ | |
251 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 252 | __le64 generation; |
4d775673 | 253 | __le64 owner; |
5f39d397 | 254 | __le32 nritems; |
9a6f11ed | 255 | u8 level; |
eb60ceac CM |
256 | } __attribute__ ((__packed__)); |
257 | ||
5f39d397 | 258 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
123abc88 | 259 | sizeof(struct btrfs_header)) / \ |
74493f7a | 260 | sizeof(struct btrfs_key_ptr)) |
123abc88 | 261 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 262 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
263 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
264 | sizeof(struct btrfs_item) - \ | |
265 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 266 | |
0b86a832 CM |
267 | |
268 | /* | |
269 | * this is a very generous portion of the super block, giving us | |
270 | * room to translate 14 chunks with 3 stripes each. | |
271 | */ | |
272 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 273 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 274 | |
fec577fb CM |
275 | /* |
276 | * the super block basically lists the main trees of the FS | |
277 | * it currently lacks any block count etc etc | |
278 | */ | |
234b63a0 | 279 | struct btrfs_super_block { |
f254e52c | 280 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 281 | /* the first 4 fields must match struct btrfs_header */ |
3768f368 | 282 | u8 fsid[16]; /* FS specific uuid */ |
db94535d | 283 | __le64 bytenr; /* this block number */ |
63b10fc4 | 284 | __le64 flags; |
e17cade2 CM |
285 | |
286 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 287 | __le64 magic; |
3768f368 CM |
288 | __le64 generation; |
289 | __le64 root; | |
0b86a832 | 290 | __le64 chunk_root; |
e02119d5 | 291 | __le64 log_root; |
db94535d CM |
292 | __le64 total_bytes; |
293 | __le64 bytes_used; | |
2e635a27 | 294 | __le64 root_dir_objectid; |
8a4b83cc | 295 | __le64 num_devices; |
5f39d397 CM |
296 | __le32 sectorsize; |
297 | __le32 nodesize; | |
298 | __le32 leafsize; | |
87ee04eb | 299 | __le32 stripesize; |
0b86a832 | 300 | __le32 sys_chunk_array_size; |
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; | |
378 | __le64 offset; | |
31840ae1 | 379 | __le32 num_refs; |
62e2749e CM |
380 | } __attribute__ ((__packed__)); |
381 | ||
0b86a832 CM |
382 | /* dev extents record free space on individual devices. The owner |
383 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 384 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
385 | */ |
386 | struct btrfs_dev_extent { | |
e17cade2 CM |
387 | __le64 chunk_tree; |
388 | __le64 chunk_objectid; | |
389 | __le64 chunk_offset; | |
0b86a832 | 390 | __le64 length; |
e17cade2 | 391 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
392 | } __attribute__ ((__packed__)); |
393 | ||
3954401f | 394 | struct btrfs_inode_ref { |
aec7477b | 395 | __le64 index; |
3954401f CM |
396 | __le16 name_len; |
397 | /* name goes here */ | |
398 | } __attribute__ ((__packed__)); | |
399 | ||
0b86a832 | 400 | struct btrfs_timespec { |
f254e52c | 401 | __le64 sec; |
1e1d2701 CM |
402 | __le32 nsec; |
403 | } __attribute__ ((__packed__)); | |
404 | ||
405 | /* | |
406 | * there is no padding here on purpose. If you want to extent the inode, | |
407 | * make a new item type | |
408 | */ | |
409 | struct btrfs_inode_item { | |
e02119d5 | 410 | /* nfs style generation number */ |
1e1d2701 | 411 | __le64 generation; |
e02119d5 CM |
412 | /* transid that last touched this inode */ |
413 | __le64 transid; | |
1e1d2701 CM |
414 | __le64 size; |
415 | __le64 nblocks; | |
31f3c99b | 416 | __le64 block_group; |
1e1d2701 CM |
417 | __le32 nlink; |
418 | __le32 uid; | |
419 | __le32 gid; | |
420 | __le32 mode; | |
0b86a832 | 421 | __le64 rdev; |
1e1d2701 CM |
422 | __le16 flags; |
423 | __le16 compat_flags; | |
0b86a832 CM |
424 | struct btrfs_timespec atime; |
425 | struct btrfs_timespec ctime; | |
426 | struct btrfs_timespec mtime; | |
427 | struct btrfs_timespec otime; | |
1e1d2701 CM |
428 | } __attribute__ ((__packed__)); |
429 | ||
e02119d5 CM |
430 | struct btrfs_dir_log_item { |
431 | __le64 end; | |
432 | } __attribute__ ((__packed__)); | |
433 | ||
62e2749e | 434 | struct btrfs_dir_item { |
d6e4a428 | 435 | struct btrfs_disk_key location; |
e02119d5 | 436 | __le64 transid; |
5103e947 | 437 | __le16 data_len; |
a8a2ee0c | 438 | __le16 name_len; |
62e2749e CM |
439 | u8 type; |
440 | } __attribute__ ((__packed__)); | |
441 | ||
442 | struct btrfs_root_item { | |
d6e4a428 CM |
443 | struct btrfs_inode_item inode; |
444 | __le64 root_dirid; | |
db94535d CM |
445 | __le64 bytenr; |
446 | __le64 byte_limit; | |
447 | __le64 bytes_used; | |
5eda7b5e | 448 | __le32 flags; |
62e2749e | 449 | __le32 refs; |
5eda7b5e CM |
450 | struct btrfs_disk_key drop_progress; |
451 | u8 drop_level; | |
db94535d | 452 | u8 level; |
9f5fae2f | 453 | } __attribute__ ((__packed__)); |
62e2749e | 454 | |
236454df CM |
455 | #define BTRFS_FILE_EXTENT_REG 0 |
456 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
457 | ||
9f5fae2f | 458 | struct btrfs_file_extent_item { |
71951f35 | 459 | __le64 generation; |
236454df | 460 | u8 type; |
9f5fae2f CM |
461 | /* |
462 | * disk space consumed by the extent, checksum blocks are included | |
463 | * in these numbers | |
464 | */ | |
db94535d CM |
465 | __le64 disk_bytenr; |
466 | __le64 disk_num_bytes; | |
9f5fae2f | 467 | /* |
dee26a9f | 468 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
469 | * this extent record is for. This allows a file extent to point |
470 | * into the middle of an existing extent on disk, sharing it | |
471 | * between two snapshots (useful if some bytes in the middle of the | |
472 | * extent have changed | |
473 | */ | |
474 | __le64 offset; | |
475 | /* | |
476 | * the logical number of file blocks (no csums included) | |
477 | */ | |
db94535d | 478 | __le64 num_bytes; |
9f5fae2f CM |
479 | } __attribute__ ((__packed__)); |
480 | ||
f254e52c | 481 | struct btrfs_csum_item { |
509659cd | 482 | u8 csum; |
f254e52c CM |
483 | } __attribute__ ((__packed__)); |
484 | ||
0b86a832 CM |
485 | /* different types of block groups (and chunks) */ |
486 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
487 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
488 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 489 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 490 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 491 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 492 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
1e2677e0 | 493 | |
9078a3e1 CM |
494 | struct btrfs_block_group_item { |
495 | __le64 used; | |
0b86a832 CM |
496 | __le64 chunk_objectid; |
497 | __le64 flags; | |
9078a3e1 CM |
498 | } __attribute__ ((__packed__)); |
499 | ||
6324fbf3 CM |
500 | struct btrfs_space_info { |
501 | u64 flags; | |
502 | u64 total_bytes; | |
503 | u64 bytes_used; | |
504 | u64 bytes_pinned; | |
e8569813 | 505 | u64 bytes_reserved; |
6324fbf3 | 506 | int full; |
0ef3e66b | 507 | int force_alloc; |
6324fbf3 | 508 | struct list_head list; |
0f9dd46c JB |
509 | |
510 | /* for block groups in our same type */ | |
511 | struct list_head block_groups; | |
512 | spinlock_t lock; | |
513 | }; | |
514 | ||
515 | struct btrfs_free_space { | |
516 | struct rb_node bytes_index; | |
517 | struct rb_node offset_index; | |
518 | u64 offset; | |
519 | u64 bytes; | |
6324fbf3 CM |
520 | }; |
521 | ||
9078a3e1 CM |
522 | struct btrfs_block_group_cache { |
523 | struct btrfs_key key; | |
524 | struct btrfs_block_group_item item; | |
c286ac48 | 525 | spinlock_t lock; |
324ae4df | 526 | u64 pinned; |
e8569813 | 527 | u64 reserved; |
0b86a832 CM |
528 | u64 flags; |
529 | int cached; | |
8f18cf13 | 530 | int ro; |
0f9dd46c JB |
531 | int dirty; |
532 | ||
533 | struct btrfs_space_info *space_info; | |
534 | ||
535 | /* free space cache stuff */ | |
536 | struct rb_root free_space_bytes; | |
537 | struct rb_root free_space_offset; | |
538 | ||
539 | /* block group cache stuff */ | |
540 | struct rb_node cache_node; | |
541 | ||
542 | /* for block groups in the same raid type */ | |
543 | struct list_head list; | |
9078a3e1 | 544 | }; |
0b86a832 | 545 | |
e4657689 ZY |
546 | struct btrfs_leaf_ref_tree { |
547 | struct rb_root root; | |
548 | struct list_head list; | |
549 | spinlock_t lock; | |
550 | }; | |
551 | ||
0b86a832 | 552 | struct btrfs_device; |
8a4b83cc | 553 | struct btrfs_fs_devices; |
9f5fae2f | 554 | struct btrfs_fs_info { |
5f39d397 | 555 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 556 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
557 | struct btrfs_root *extent_root; |
558 | struct btrfs_root *tree_root; | |
0b86a832 CM |
559 | struct btrfs_root *chunk_root; |
560 | struct btrfs_root *dev_root; | |
e02119d5 CM |
561 | |
562 | /* the log root tree is a directory of all the other log roots */ | |
563 | struct btrfs_root *log_root_tree; | |
0f7d52f4 | 564 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 565 | |
0f9dd46c JB |
566 | /* block group cache stuff */ |
567 | spinlock_t block_group_cache_lock; | |
568 | struct rb_root block_group_cache_tree; | |
569 | ||
d1310b2e CM |
570 | struct extent_io_tree pinned_extents; |
571 | struct extent_io_tree pending_del; | |
572 | struct extent_io_tree extent_ins; | |
1a5bc167 | 573 | |
0b86a832 CM |
574 | /* logical->physical extent mapping */ |
575 | struct btrfs_mapping_tree mapping_tree; | |
576 | ||
293ffd5f | 577 | u64 generation; |
15ee9bc7 | 578 | u64 last_trans_committed; |
e02119d5 | 579 | u64 last_trans_new_blockgroup; |
9ca9ee09 | 580 | u64 open_ioctl_trans; |
b6cda9bc | 581 | unsigned long mount_opt; |
c59f8951 | 582 | u64 max_extent; |
6f568d35 | 583 | u64 max_inline; |
8f662a76 | 584 | u64 alloc_start; |
79154b1b | 585 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 586 | wait_queue_head_t transaction_throttle; |
f9295749 | 587 | wait_queue_head_t transaction_wait; |
4854ddd0 | 588 | wait_queue_head_t async_submit_wait; |
e02119d5 CM |
589 | |
590 | wait_queue_head_t tree_log_wait; | |
591 | ||
4b52dff6 | 592 | struct btrfs_super_block super_copy; |
a061fc8d | 593 | struct btrfs_super_block super_for_commit; |
0b86a832 | 594 | struct block_device *__bdev; |
e20d96d6 | 595 | struct super_block *sb; |
d98237b3 | 596 | struct inode *btree_inode; |
04160088 | 597 | struct backing_dev_info bdi; |
19c00ddc | 598 | spinlock_t hash_lock; |
79154b1b | 599 | struct mutex trans_mutex; |
e02119d5 | 600 | struct mutex tree_log_mutex; |
a74a4b97 CM |
601 | struct mutex transaction_kthread_mutex; |
602 | struct mutex cleaner_mutex; | |
925baedd CM |
603 | struct mutex alloc_mutex; |
604 | struct mutex chunk_mutex; | |
a2135011 | 605 | struct mutex drop_mutex; |
7d9eb12c | 606 | struct mutex volume_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; |
0986fe9e | 612 | atomic_t nr_async_bios; |
e02119d5 CM |
613 | atomic_t tree_log_writers; |
614 | atomic_t tree_log_commit; | |
615 | unsigned long tree_log_batch; | |
616 | u64 tree_log_transid; | |
ce9adaa5 | 617 | |
3eaa2885 CM |
618 | /* |
619 | * this is used by the balancing code to wait for all the pending | |
620 | * ordered extents | |
621 | */ | |
622 | spinlock_t ordered_extent_lock; | |
623 | struct list_head ordered_extents; | |
ea8c2819 | 624 | struct list_head delalloc_inodes; |
3eaa2885 | 625 | |
8b712842 CM |
626 | /* |
627 | * there is a pool of worker threads for checksumming during writes | |
628 | * and a pool for checksumming after reads. This is because readers | |
629 | * can run with FS locks held, and the writers may be waiting for | |
630 | * those locks. We don't want ordering in the pending list to cause | |
631 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
632 | * |
633 | * A third pool does submit_bio to avoid deadlocking with the other | |
634 | * two | |
8b712842 CM |
635 | */ |
636 | struct btrfs_workers workers; | |
637 | struct btrfs_workers endio_workers; | |
e6dcd2dc | 638 | struct btrfs_workers endio_write_workers; |
1cc127b5 | 639 | struct btrfs_workers submit_workers; |
247e743c CM |
640 | /* |
641 | * fixup workers take dirty pages that didn't properly go through | |
642 | * the cow mechanism and make them safe to write. It happens | |
643 | * for the sys_munmap function call path | |
644 | */ | |
645 | struct btrfs_workers fixup_workers; | |
a74a4b97 CM |
646 | struct task_struct *transaction_kthread; |
647 | struct task_struct *cleaner_kthread; | |
4543df7e | 648 | int thread_pool_size; |
8b712842 | 649 | |
e4657689 ZY |
650 | struct btrfs_leaf_ref_tree shared_ref_tree; |
651 | ||
58176a96 JB |
652 | struct kobject super_kobj; |
653 | struct completion kobj_unregister; | |
e66f709b | 654 | int do_barriers; |
facda1e7 | 655 | int closing; |
e02119d5 | 656 | int log_root_recovering; |
a2135011 | 657 | atomic_t throttles; |
ab78c84d | 658 | atomic_t throttle_gen; |
9f5fae2f | 659 | |
324ae4df | 660 | u64 total_pinned; |
0b86a832 CM |
661 | struct list_head dirty_cowonly_roots; |
662 | ||
8a4b83cc | 663 | struct btrfs_fs_devices *fs_devices; |
6324fbf3 | 664 | struct list_head space_info; |
1832a6d5 | 665 | spinlock_t delalloc_lock; |
cee36a03 | 666 | spinlock_t new_trans_lock; |
1832a6d5 | 667 | u64 delalloc_bytes; |
e18e4809 | 668 | u64 last_alloc; |
4529ba49 | 669 | u64 last_data_alloc; |
e02119d5 | 670 | u64 last_log_alloc; |
d18a2c44 | 671 | |
31153d81 YZ |
672 | spinlock_t ref_cache_lock; |
673 | u64 total_ref_cache_size; | |
31153d81 | 674 | |
d18a2c44 CM |
675 | u64 avail_data_alloc_bits; |
676 | u64 avail_metadata_alloc_bits; | |
677 | u64 avail_system_alloc_bits; | |
678 | u64 data_alloc_profile; | |
679 | u64 metadata_alloc_profile; | |
680 | u64 system_alloc_profile; | |
788f20eb CM |
681 | |
682 | void *bdev_holder; | |
324ae4df | 683 | }; |
0b86a832 | 684 | |
9f5fae2f CM |
685 | /* |
686 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 687 | * and for the extent tree extent_root root. |
9f5fae2f | 688 | */ |
f321e491 | 689 | struct btrfs_dirty_root; |
9f5fae2f | 690 | struct btrfs_root { |
5f39d397 | 691 | struct extent_buffer *node; |
925baedd CM |
692 | |
693 | /* the node lock is held while changing the node pointer */ | |
694 | spinlock_t node_lock; | |
695 | ||
5f39d397 | 696 | struct extent_buffer *commit_root; |
31153d81 | 697 | struct btrfs_leaf_ref_tree *ref_tree; |
017e5369 | 698 | struct btrfs_leaf_ref_tree ref_tree_struct; |
f321e491 | 699 | struct btrfs_dirty_root *dirty_root; |
e02119d5 | 700 | struct btrfs_root *log_root; |
31153d81 | 701 | |
62e2749e CM |
702 | struct btrfs_root_item root_item; |
703 | struct btrfs_key root_key; | |
9f5fae2f | 704 | struct btrfs_fs_info *fs_info; |
0f7d52f4 | 705 | struct inode *inode; |
d0c803c4 CM |
706 | struct extent_io_tree dirty_log_pages; |
707 | ||
58176a96 JB |
708 | struct kobject root_kobj; |
709 | struct completion kobj_unregister; | |
a2135011 | 710 | struct mutex objectid_mutex; |
e02119d5 | 711 | struct mutex log_mutex; |
ea8c2819 | 712 | |
0f7d52f4 CM |
713 | u64 objectid; |
714 | u64 last_trans; | |
5f39d397 CM |
715 | |
716 | /* data allocations are done in sectorsize units */ | |
717 | u32 sectorsize; | |
718 | ||
719 | /* node allocations are done in nodesize units */ | |
720 | u32 nodesize; | |
721 | ||
722 | /* leaf allocations are done in leafsize units */ | |
723 | u32 leafsize; | |
724 | ||
87ee04eb CM |
725 | u32 stripesize; |
726 | ||
9f5fae2f | 727 | u32 type; |
1b05da2e CM |
728 | u64 highest_inode; |
729 | u64 last_inode_alloc; | |
9f3a7427 | 730 | int ref_cows; |
0b86a832 | 731 | int track_dirty; |
3f157a2f | 732 | u64 defrag_trans_start; |
6702ed49 | 733 | struct btrfs_key defrag_progress; |
0ef3e66b | 734 | struct btrfs_key defrag_max; |
6702ed49 CM |
735 | int defrag_running; |
736 | int defrag_level; | |
58176a96 | 737 | char *name; |
4313b399 | 738 | int in_sysfs; |
0b86a832 CM |
739 | |
740 | /* the dirty list is only used by non-reference counted roots */ | |
741 | struct list_head dirty_list; | |
7b128766 | 742 | |
bcc63abb Y |
743 | spinlock_t list_lock; |
744 | struct list_head dead_list; | |
7b128766 | 745 | struct list_head orphan_list; |
62e2749e CM |
746 | }; |
747 | ||
1e1d2701 | 748 | /* |
0b86a832 | 749 | |
1e1d2701 CM |
750 | * inode items have the data typically returned from stat and store other |
751 | * info about object characteristics. There is one for every file and dir in | |
752 | * the FS | |
753 | */ | |
9078a3e1 | 754 | #define BTRFS_INODE_ITEM_KEY 1 |
3954401f CM |
755 | #define BTRFS_INODE_REF_KEY 2 |
756 | #define BTRFS_XATTR_ITEM_KEY 8 | |
7b128766 | 757 | #define BTRFS_ORPHAN_ITEM_KEY 9 |
9078a3e1 | 758 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
759 | |
760 | /* | |
761 | * dir items are the name -> inode pointers in a directory. There is one | |
762 | * for every name in a directory. | |
763 | */ | |
e02119d5 CM |
764 | #define BTRFS_DIR_LOG_ITEM_KEY 14 |
765 | #define BTRFS_DIR_LOG_INDEX_KEY 15 | |
9078a3e1 CM |
766 | #define BTRFS_DIR_ITEM_KEY 16 |
767 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 768 | /* |
9078a3e1 | 769 | * extent data is for file data |
1e1d2701 | 770 | */ |
9078a3e1 | 771 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
772 | /* |
773 | * csum items have the checksums for data in the extents | |
774 | */ | |
9078a3e1 CM |
775 | #define BTRFS_CSUM_ITEM_KEY 19 |
776 | ||
e02119d5 CM |
777 | |
778 | /* reserve 21-31 for other file/dir stuff */ | |
f254e52c | 779 | |
1e1d2701 CM |
780 | /* |
781 | * root items point to tree roots. There are typically in the root | |
782 | * tree used by the super block to find all the other trees | |
783 | */ | |
9078a3e1 | 784 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
785 | /* |
786 | * extent items are in the extent map tree. These record which blocks | |
787 | * are used, and how many references there are to each block | |
788 | */ | |
9078a3e1 | 789 | #define BTRFS_EXTENT_ITEM_KEY 33 |
74493f7a | 790 | #define BTRFS_EXTENT_REF_KEY 34 |
9078a3e1 CM |
791 | |
792 | /* | |
793 | * block groups give us hints into the extent allocation trees. Which | |
794 | * blocks are free etc etc | |
795 | */ | |
74493f7a | 796 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 50 |
9f5fae2f | 797 | |
0b86a832 CM |
798 | #define BTRFS_DEV_EXTENT_KEY 75 |
799 | #define BTRFS_DEV_ITEM_KEY 76 | |
800 | #define BTRFS_CHUNK_ITEM_KEY 77 | |
801 | ||
1e1d2701 CM |
802 | /* |
803 | * string items are for debugging. They just store a short string of | |
804 | * data in the FS | |
805 | */ | |
9078a3e1 CM |
806 | #define BTRFS_STRING_ITEM_KEY 253 |
807 | ||
21ad10cf CM |
808 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
809 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
810 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 811 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 812 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
b6cda9bc CM |
813 | |
814 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
815 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
816 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
817 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
818 | /* |
819 | * Inode flags | |
820 | */ | |
fdebe2bd Y |
821 | #define BTRFS_INODE_NODATASUM (1 << 0) |
822 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
823 | #define BTRFS_INODE_READONLY (1 << 2) | |
b98b6767 Y |
824 | #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \ |
825 | ~BTRFS_INODE_##flag) | |
826 | #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \ | |
827 | BTRFS_INODE_##flag) | |
828 | #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \ | |
829 | BTRFS_INODE_##flag) | |
5f39d397 CM |
830 | /* some macros to generate set/get funcs for the struct fields. This |
831 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
832 | * one for u8: | |
833 | */ | |
834 | #define le8_to_cpu(v) (v) | |
835 | #define cpu_to_le8(v) (v) | |
836 | #define __le8 u8 | |
837 | ||
838 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
839 | read_extent_buffer(eb, (char *)(result), \ | |
840 | ((unsigned long)(ptr)) + \ | |
841 | offsetof(type, member), \ | |
842 | sizeof(((type *)0)->member))) | |
843 | ||
844 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
845 | write_extent_buffer(eb, (char *)(result), \ | |
846 | ((unsigned long)(ptr)) + \ | |
847 | offsetof(type, member), \ | |
848 | sizeof(((type *)0)->member))) | |
849 | ||
0f82731f | 850 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 851 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
852 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
853 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
854 | #endif | |
5f39d397 CM |
855 | |
856 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
857 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
858 | { \ | |
df68b8a7 DM |
859 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
860 | u##bits res = le##bits##_to_cpu(p->member); \ | |
861 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 862 | return res; \ |
5f39d397 CM |
863 | } \ |
864 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
865 | u##bits val) \ | |
866 | { \ | |
df68b8a7 DM |
867 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
868 | p->member = cpu_to_le##bits(val); \ | |
869 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 870 | } |
9078a3e1 | 871 | |
5f39d397 CM |
872 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
873 | static inline u##bits btrfs_##name(type *s) \ | |
874 | { \ | |
875 | return le##bits##_to_cpu(s->member); \ | |
876 | } \ | |
877 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
878 | { \ | |
879 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
880 | } |
881 | ||
0b86a832 CM |
882 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
883 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
884 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
885 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
886 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
887 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); | |
888 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
889 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
890 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
891 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
0b86a832 | 892 | |
8a4b83cc CM |
893 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
894 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
895 | total_bytes, 64); | |
896 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
897 | bytes_used, 64); | |
898 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
899 | io_align, 32); | |
900 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
901 | io_width, 32); | |
902 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
903 | sector_size, 32); | |
904 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
905 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
906 | dev_group, 32); | |
907 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
908 | seek_speed, 8); | |
909 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
910 | bandwidth, 8); | |
8a4b83cc | 911 | |
0b86a832 CM |
912 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
913 | { | |
914 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
915 | } | |
916 | ||
e17cade2 | 917 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
918 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
919 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
920 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
921 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
922 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
923 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
924 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 925 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
926 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
927 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
928 | ||
e17cade2 CM |
929 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
930 | { | |
931 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
932 | } | |
933 | ||
934 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
935 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
936 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
937 | stripe_len, 64); | |
938 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
939 | io_align, 32); | |
940 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
941 | io_width, 32); | |
942 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
943 | sector_size, 32); | |
944 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
945 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
946 | num_stripes, 16); | |
321aecc6 CM |
947 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
948 | sub_stripes, 16); | |
0b86a832 CM |
949 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
950 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
951 | ||
952 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
953 | int nr) | |
954 | { | |
955 | unsigned long offset = (unsigned long)c; | |
956 | offset += offsetof(struct btrfs_chunk, stripe); | |
957 | offset += nr * sizeof(struct btrfs_stripe); | |
958 | return (struct btrfs_stripe *)offset; | |
959 | } | |
960 | ||
a443755f CM |
961 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
962 | { | |
963 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
964 | } | |
965 | ||
0b86a832 CM |
966 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
967 | struct btrfs_chunk *c, int nr) | |
968 | { | |
969 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
970 | } | |
971 | ||
972 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, | |
973 | struct btrfs_chunk *c, int nr, | |
974 | u64 val) | |
975 | { | |
976 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
977 | } | |
978 | ||
979 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, | |
980 | struct btrfs_chunk *c, int nr) | |
981 | { | |
982 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
983 | } | |
984 | ||
985 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, | |
986 | struct btrfs_chunk *c, int nr, | |
987 | u64 val) | |
988 | { | |
989 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
990 | } | |
991 | ||
5f39d397 CM |
992 | /* struct btrfs_block_group_item */ |
993 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
994 | used, 64); | |
995 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
996 | used, 64); | |
0b86a832 CM |
997 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
998 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
999 | |
1000 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1001 | struct btrfs_block_group_item, chunk_objectid, 64); |
1002 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1003 | struct btrfs_block_group_item, flags, 64); | |
1004 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1005 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1006 | |
3954401f CM |
1007 | /* struct btrfs_inode_ref */ |
1008 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1009 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1010 | |
5f39d397 CM |
1011 | /* struct btrfs_inode_item */ |
1012 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
e02119d5 | 1013 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 CM |
1014 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
1015 | BTRFS_SETGET_FUNCS(inode_nblocks, struct btrfs_inode_item, nblocks, 64); | |
1016 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); | |
1017 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1018 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1019 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1020 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1021 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
5f39d397 CM |
1022 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 16); |
1023 | BTRFS_SETGET_FUNCS(inode_compat_flags, struct btrfs_inode_item, | |
1024 | compat_flags, 16); | |
1e1d2701 | 1025 | |
0b86a832 | 1026 | static inline struct btrfs_timespec * |
5f39d397 | 1027 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1028 | { |
5f39d397 CM |
1029 | unsigned long ptr = (unsigned long)inode_item; |
1030 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1031 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1032 | } |
1033 | ||
0b86a832 | 1034 | static inline struct btrfs_timespec * |
5f39d397 | 1035 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1036 | { |
5f39d397 CM |
1037 | unsigned long ptr = (unsigned long)inode_item; |
1038 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1039 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1040 | } |
1041 | ||
0b86a832 | 1042 | static inline struct btrfs_timespec * |
5f39d397 | 1043 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1044 | { |
5f39d397 CM |
1045 | unsigned long ptr = (unsigned long)inode_item; |
1046 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1047 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1048 | } |
1049 | ||
0b86a832 | 1050 | static inline struct btrfs_timespec * |
5f39d397 | 1051 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1052 | { |
5f39d397 CM |
1053 | unsigned long ptr = (unsigned long)inode_item; |
1054 | ptr += offsetof(struct btrfs_inode_item, otime); | |
0b86a832 | 1055 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1056 | } |
1057 | ||
0b86a832 CM |
1058 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1059 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1060 | |
0b86a832 | 1061 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1062 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1063 | chunk_tree, 64); | |
1064 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1065 | chunk_objectid, 64); | |
1066 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1067 | chunk_offset, 64); | |
0b86a832 CM |
1068 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1069 | ||
e17cade2 CM |
1070 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1071 | { | |
1072 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1073 | return (u8 *)((unsigned long)dev + ptr); | |
1074 | } | |
1075 | ||
74493f7a CM |
1076 | /* struct btrfs_extent_ref */ |
1077 | BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64); | |
1078 | BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64); | |
1079 | BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64); | |
1080 | BTRFS_SETGET_FUNCS(ref_offset, struct btrfs_extent_ref, offset, 64); | |
31840ae1 | 1081 | BTRFS_SETGET_FUNCS(ref_num_refs, struct btrfs_extent_ref, num_refs, 32); |
74493f7a | 1082 | |
7bb86316 CM |
1083 | BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64); |
1084 | BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref, | |
74493f7a | 1085 | generation, 64); |
7bb86316 CM |
1086 | BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref, |
1087 | objectid, 64); | |
31840ae1 ZY |
1088 | BTRFS_SETGET_STACK_FUNCS(stack_ref_offset, struct btrfs_extent_ref, |
1089 | offset, 64); | |
1090 | BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs, struct btrfs_extent_ref, | |
1091 | num_refs, 32); | |
e20d96d6 | 1092 | |
31840ae1 ZY |
1093 | /* struct btrfs_extent_item */ |
1094 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32); | |
5f39d397 CM |
1095 | BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, |
1096 | refs, 32); | |
e20d96d6 | 1097 | |
5f39d397 CM |
1098 | /* struct btrfs_node */ |
1099 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1100 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1101 | |
5f39d397 | 1102 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1103 | { |
5f39d397 CM |
1104 | unsigned long ptr; |
1105 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1106 | sizeof(struct btrfs_key_ptr) * nr; | |
1107 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1108 | } |
1109 | ||
5f39d397 CM |
1110 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1111 | int nr, u64 val) | |
cf27e1ee | 1112 | { |
5f39d397 CM |
1113 | unsigned long ptr; |
1114 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1115 | sizeof(struct btrfs_key_ptr) * nr; | |
1116 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1117 | } |
1118 | ||
74493f7a CM |
1119 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1120 | { | |
1121 | unsigned long ptr; | |
1122 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1123 | sizeof(struct btrfs_key_ptr) * nr; | |
1124 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1125 | } | |
1126 | ||
1127 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1128 | int nr, u64 val) | |
1129 | { | |
1130 | unsigned long ptr; | |
1131 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1132 | sizeof(struct btrfs_key_ptr) * nr; | |
1133 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1134 | } | |
1135 | ||
810191ff | 1136 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1137 | { |
5f39d397 CM |
1138 | return offsetof(struct btrfs_node, ptrs) + |
1139 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1140 | } |
1141 | ||
e644d021 CM |
1142 | void btrfs_node_key(struct extent_buffer *eb, |
1143 | struct btrfs_disk_key *disk_key, int nr); | |
1144 | ||
5f39d397 CM |
1145 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1146 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1147 | { |
5f39d397 CM |
1148 | unsigned long ptr; |
1149 | ptr = btrfs_node_key_ptr_offset(nr); | |
1150 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1151 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1152 | } |
1153 | ||
5f39d397 CM |
1154 | /* struct btrfs_item */ |
1155 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1156 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1157 | |
5f39d397 | 1158 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1159 | { |
5f39d397 CM |
1160 | return offsetof(struct btrfs_leaf, items) + |
1161 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1162 | } |
1163 | ||
5f39d397 CM |
1164 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1165 | int nr) | |
0783fcfc | 1166 | { |
5f39d397 | 1167 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1168 | } |
1169 | ||
5f39d397 CM |
1170 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1171 | struct btrfs_item *item) | |
0783fcfc | 1172 | { |
5f39d397 | 1173 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1174 | } |
1175 | ||
5f39d397 | 1176 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1177 | { |
5f39d397 | 1178 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1179 | } |
1180 | ||
5f39d397 | 1181 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1182 | { |
5f39d397 | 1183 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1184 | } |
1185 | ||
5f39d397 | 1186 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1187 | { |
5f39d397 | 1188 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1189 | } |
1190 | ||
5f39d397 CM |
1191 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1192 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1193 | { |
5f39d397 CM |
1194 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1195 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1196 | } |
1197 | ||
5f39d397 CM |
1198 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1199 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1200 | { |
5f39d397 CM |
1201 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1202 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1203 | } |
1204 | ||
e02119d5 CM |
1205 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1206 | ||
5f39d397 | 1207 | /* struct btrfs_dir_item */ |
5103e947 | 1208 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1209 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1210 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1211 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1212 | |
5f39d397 CM |
1213 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1214 | struct btrfs_dir_item *item, | |
1215 | struct btrfs_disk_key *key) | |
1d4f6404 | 1216 | { |
5f39d397 | 1217 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1218 | } |
1219 | ||
5f39d397 CM |
1220 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1221 | struct btrfs_dir_item *item, | |
1222 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1223 | { |
5f39d397 | 1224 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1225 | } |
1226 | ||
5f39d397 CM |
1227 | /* struct btrfs_disk_key */ |
1228 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1229 | objectid, 64); | |
1230 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1231 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1232 | |
e2fa7227 CM |
1233 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1234 | struct btrfs_disk_key *disk) | |
1235 | { | |
1236 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1237 | cpu->type = disk->type; |
e2fa7227 CM |
1238 | cpu->objectid = le64_to_cpu(disk->objectid); |
1239 | } | |
1240 | ||
1241 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1242 | struct btrfs_key *cpu) | |
1243 | { | |
1244 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1245 | disk->type = cpu->type; |
e2fa7227 CM |
1246 | disk->objectid = cpu_to_le64(cpu->objectid); |
1247 | } | |
1248 | ||
5f39d397 CM |
1249 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1250 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1251 | { |
5f39d397 CM |
1252 | struct btrfs_disk_key disk_key; |
1253 | btrfs_node_key(eb, &disk_key, nr); | |
1254 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1255 | } |
1256 | ||
5f39d397 CM |
1257 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1258 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1259 | { |
5f39d397 CM |
1260 | struct btrfs_disk_key disk_key; |
1261 | btrfs_item_key(eb, &disk_key, nr); | |
1262 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1263 | } |
1264 | ||
5f39d397 CM |
1265 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1266 | struct btrfs_dir_item *item, | |
1267 | struct btrfs_key *key) | |
4d775673 | 1268 | { |
5f39d397 CM |
1269 | struct btrfs_disk_key disk_key; |
1270 | btrfs_dir_item_key(eb, item, &disk_key); | |
1271 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1272 | } |
1273 | ||
58176a96 | 1274 | |
5f39d397 | 1275 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1276 | { |
5f39d397 | 1277 | return key->type; |
3768f368 CM |
1278 | } |
1279 | ||
5f39d397 | 1280 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1281 | { |
5f39d397 | 1282 | key->type = val; |
3768f368 CM |
1283 | } |
1284 | ||
5f39d397 | 1285 | /* struct btrfs_header */ |
db94535d | 1286 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1287 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1288 | generation, 64); | |
1289 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1290 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1291 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1292 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1293 | |
63b10fc4 CM |
1294 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1295 | { | |
1296 | return (btrfs_header_flags(eb) & flag) == flag; | |
1297 | } | |
1298 | ||
1299 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1300 | { | |
1301 | u64 flags = btrfs_header_flags(eb); | |
1302 | btrfs_set_header_flags(eb, flags | flag); | |
1303 | return (flags & flag) == flag; | |
1304 | } | |
1305 | ||
1306 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1307 | { | |
1308 | u64 flags = btrfs_header_flags(eb); | |
1309 | btrfs_set_header_flags(eb, flags & ~flag); | |
1310 | return (flags & flag) == flag; | |
1311 | } | |
1312 | ||
5f39d397 | 1313 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1314 | { |
5f39d397 CM |
1315 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1316 | return (u8 *)ptr; | |
0f7d52f4 CM |
1317 | } |
1318 | ||
e17cade2 CM |
1319 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1320 | { | |
1321 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1322 | return (u8 *)ptr; | |
1323 | } | |
1324 | ||
5f39d397 | 1325 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 1326 | { |
5f39d397 CM |
1327 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
1328 | return (u8 *)ptr; | |
3768f368 CM |
1329 | } |
1330 | ||
5f39d397 | 1331 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 1332 | { |
5f39d397 CM |
1333 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
1334 | return (u8 *)ptr; | |
3768f368 CM |
1335 | } |
1336 | ||
5f39d397 | 1337 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 1338 | { |
5f39d397 | 1339 | return NULL; |
3768f368 CM |
1340 | } |
1341 | ||
5f39d397 | 1342 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 1343 | { |
5f39d397 | 1344 | return NULL; |
3768f368 CM |
1345 | } |
1346 | ||
5f39d397 | 1347 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 1348 | { |
5f39d397 | 1349 | return NULL; |
3768f368 CM |
1350 | } |
1351 | ||
5f39d397 | 1352 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1353 | { |
5f39d397 | 1354 | return (btrfs_header_level(eb) == 0); |
3768f368 CM |
1355 | } |
1356 | ||
5f39d397 CM |
1357 | /* struct btrfs_root_item */ |
1358 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); | |
db94535d CM |
1359 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1360 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1361 | |
db94535d CM |
1362 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1363 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1364 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1365 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
1366 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 32); | |
db94535d CM |
1367 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1368 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
123abc88 | 1369 | |
5f39d397 | 1370 | /* struct btrfs_super_block */ |
db94535d | 1371 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1372 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1373 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1374 | generation, 64); | |
1375 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1376 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1377 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
db94535d CM |
1378 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1379 | root_level, 8); | |
0b86a832 CM |
1380 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1381 | chunk_root, 64); | |
1382 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
1383 | chunk_root_level, 8); |
1384 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
1385 | log_root, 64); | |
1386 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, | |
1387 | log_root_level, 8); | |
db94535d CM |
1388 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1389 | total_bytes, 64); | |
1390 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1391 | bytes_used, 64); | |
5f39d397 CM |
1392 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1393 | sectorsize, 32); | |
1394 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1395 | nodesize, 32); | |
1396 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1397 | leafsize, 32); | |
87ee04eb CM |
1398 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1399 | stripesize, 32); | |
5f39d397 CM |
1400 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1401 | root_dir_objectid, 64); | |
8a4b83cc CM |
1402 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1403 | num_devices, 64); | |
2e635a27 | 1404 | |
5f39d397 | 1405 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 1406 | { |
5f39d397 | 1407 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
1408 | } |
1409 | ||
5f39d397 CM |
1410 | /* struct btrfs_file_extent_item */ |
1411 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 1412 | |
5f39d397 | 1413 | static inline unsigned long btrfs_file_extent_inline_start(struct |
236454df CM |
1414 | btrfs_file_extent_item *e) |
1415 | { | |
5f39d397 | 1416 | unsigned long offset = (unsigned long)e; |
db94535d | 1417 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1418 | return offset; |
236454df CM |
1419 | } |
1420 | ||
1421 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
1422 | { | |
db94535d | 1423 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
1424 | } |
1425 | ||
5f39d397 CM |
1426 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, |
1427 | struct btrfs_item *e) | |
9f5fae2f | 1428 | { |
5f39d397 | 1429 | unsigned long offset; |
db94535d | 1430 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1431 | return btrfs_item_size(eb, e) - offset; |
9f5fae2f CM |
1432 | } |
1433 | ||
db94535d CM |
1434 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
1435 | disk_bytenr, 64); | |
5f39d397 CM |
1436 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
1437 | generation, 64); | |
db94535d CM |
1438 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
1439 | disk_num_bytes, 64); | |
5f39d397 CM |
1440 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
1441 | offset, 64); | |
db94535d CM |
1442 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
1443 | num_bytes, 64); | |
9f5fae2f | 1444 | |
e20d96d6 CM |
1445 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1446 | { | |
1447 | return sb->s_fs_info; | |
1448 | } | |
1449 | ||
58176a96 JB |
1450 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
1451 | const char *name, int len) | |
1452 | { | |
1453 | /* if we already have a name just free it */ | |
1454 | if (root->name) | |
1455 | kfree(root->name); | |
1456 | ||
1457 | root->name = kmalloc(len+1, GFP_KERNEL); | |
1458 | if (!root->name) | |
1459 | return -ENOMEM; | |
1460 | ||
1461 | memcpy(root->name, name, len); | |
1462 | root->name[len] ='\0'; | |
1463 | ||
1464 | return 0; | |
1465 | } | |
1466 | ||
db94535d CM |
1467 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) { |
1468 | if (level == 0) | |
1469 | return root->leafsize; | |
1470 | return root->nodesize; | |
1471 | } | |
1472 | ||
4beb1b8b CM |
1473 | /* helper function to cast into the data area of the leaf. */ |
1474 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 1475 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
1476 | btrfs_item_offset_nr(leaf, slot))) |
1477 | ||
1478 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
1479 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
1480 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 1481 | |
2b1f55b0 CM |
1482 | static inline struct dentry *fdentry(struct file *file) |
1483 | { | |
6da6abae | 1484 | return file->f_path.dentry; |
6da6abae CM |
1485 | } |
1486 | ||
b18c6685 | 1487 | /* extent-tree.c */ |
31840ae1 | 1488 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
5b21f2ed ZY |
1489 | int btrfs_lookup_extent_ref(struct btrfs_trans_handle *trans, |
1490 | struct btrfs_root *root, u64 bytenr, | |
1491 | u64 num_bytes, u32 *refs); | |
e02119d5 CM |
1492 | int btrfs_update_pinned_extents(struct btrfs_root *root, |
1493 | u64 bytenr, u64 num, int pin); | |
1494 | int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans, | |
1495 | struct btrfs_root *root, struct extent_buffer *leaf); | |
7ea394f1 YZ |
1496 | int btrfs_cross_ref_exists(struct btrfs_trans_handle *trans, |
1497 | struct btrfs_root *root, | |
f321e491 | 1498 | struct btrfs_key *key, u64 bytenr); |
e9d0b13b CM |
1499 | int btrfs_extent_post_op(struct btrfs_trans_handle *trans, |
1500 | struct btrfs_root *root); | |
d1310b2e | 1501 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); |
5276aeda CM |
1502 | struct btrfs_block_group_cache *btrfs_lookup_block_group(struct |
1503 | btrfs_fs_info *info, | |
db94535d | 1504 | u64 bytenr); |
31f3c99b CM |
1505 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1506 | struct btrfs_block_group_cache | |
be744175 | 1507 | *hint, u64 search_start, |
de428b63 | 1508 | int data, int owner); |
5f39d397 | 1509 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
7bb86316 | 1510 | struct btrfs_root *root, |
31840ae1 | 1511 | u32 blocksize, u64 parent, |
7bb86316 CM |
1512 | u64 root_objectid, |
1513 | u64 ref_generation, | |
7bb86316 CM |
1514 | int level, |
1515 | u64 hint, | |
1516 | u64 empty_size); | |
65b51a00 CM |
1517 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
1518 | struct btrfs_root *root, | |
1519 | u64 bytenr, u32 blocksize); | |
edbd8d4e | 1520 | int btrfs_shrink_extent_tree(struct btrfs_root *root, u64 new_size); |
7bb86316 CM |
1521 | int btrfs_insert_extent_backref(struct btrfs_trans_handle *trans, |
1522 | struct btrfs_root *root, | |
31840ae1 ZY |
1523 | struct btrfs_path *path, |
1524 | u64 bytenr, u64 parent, | |
7bb86316 CM |
1525 | u64 root_objectid, u64 ref_generation, |
1526 | u64 owner, u64 owner_offset); | |
4d775673 | 1527 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
7bb86316 | 1528 | struct btrfs_root *root, |
31840ae1 | 1529 | u64 num_bytes, u64 parent, u64 min_bytes, |
98d20f67 | 1530 | u64 root_objectid, u64 ref_generation, |
7bb86316 CM |
1531 | u64 owner, u64 owner_offset, |
1532 | u64 empty_size, u64 hint_byte, | |
ec44a35c | 1533 | u64 search_end, struct btrfs_key *ins, u64 data); |
e6dcd2dc | 1534 | int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1535 | struct btrfs_root *root, u64 parent, |
e6dcd2dc CM |
1536 | u64 root_objectid, u64 ref_generation, |
1537 | u64 owner, u64 owner_offset, | |
1538 | struct btrfs_key *ins); | |
e02119d5 | 1539 | int btrfs_alloc_logged_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1540 | struct btrfs_root *root, u64 parent, |
e02119d5 CM |
1541 | u64 root_objectid, u64 ref_generation, |
1542 | u64 owner, u64 owner_offset, | |
1543 | struct btrfs_key *ins); | |
e6dcd2dc CM |
1544 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
1545 | struct btrfs_root *root, | |
1546 | u64 num_bytes, u64 min_alloc_size, | |
1547 | u64 empty_size, u64 hint_byte, | |
1548 | u64 search_end, struct btrfs_key *ins, | |
1549 | u64 data); | |
e089f05c | 1550 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
31840ae1 ZY |
1551 | struct extent_buffer *orig_buf, struct extent_buffer *buf, |
1552 | u32 *nr_extents); | |
1553 | int btrfs_cache_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
1554 | struct extent_buffer *buf, u32 nr_extents); | |
1555 | int btrfs_update_ref(struct btrfs_trans_handle *trans, | |
1556 | struct btrfs_root *root, struct extent_buffer *orig_buf, | |
1557 | struct extent_buffer *buf, int start_slot, int nr); | |
1558 | int btrfs_free_extent(struct btrfs_trans_handle *trans, | |
1559 | struct btrfs_root *root, | |
1560 | u64 bytenr, u64 num_bytes, u64 parent, | |
7bb86316 CM |
1561 | u64 root_objectid, u64 ref_generation, |
1562 | u64 owner_objectid, u64 owner_offset, int pin); | |
65b51a00 | 1563 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
ccd467d6 CM |
1564 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
1565 | struct btrfs_root *root, | |
d1310b2e | 1566 | struct extent_io_tree *unpin); |
b18c6685 | 1567 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
1568 | struct btrfs_root *root, |
1569 | u64 bytenr, u64 num_bytes, u64 parent, | |
1570 | u64 root_objectid, u64 ref_generation, | |
1571 | u64 owner, u64 owner_offset); | |
1572 | int btrfs_update_extent_ref(struct btrfs_trans_handle *trans, | |
1573 | struct btrfs_root *root, u64 bytenr, | |
1574 | u64 orig_parent, u64 parent, | |
1575 | u64 root_objectid, u64 ref_generation, | |
1576 | u64 owner, u64 owner_offset); | |
9078a3e1 CM |
1577 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1578 | struct btrfs_root *root); | |
1579 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1580 | int btrfs_read_block_groups(struct btrfs_root *root); | |
0b86a832 CM |
1581 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
1582 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 1583 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 1584 | u64 size); |
dee26a9f | 1585 | /* ctree.c */ |
0b86a832 CM |
1586 | int btrfs_previous_item(struct btrfs_root *root, |
1587 | struct btrfs_path *path, u64 min_objectid, | |
1588 | int type); | |
31840ae1 ZY |
1589 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
1590 | struct btrfs_root *root, struct btrfs_path *path, | |
1591 | struct btrfs_key *new_key); | |
925baedd CM |
1592 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
1593 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 1594 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
1595 | struct btrfs_key *key, int lowest_level, |
1596 | int cache_only, u64 min_trans); | |
1597 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 1598 | struct btrfs_key *max_key, |
3f157a2f CM |
1599 | struct btrfs_path *path, int cache_only, |
1600 | u64 min_trans); | |
5f39d397 CM |
1601 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
1602 | struct btrfs_root *root, struct extent_buffer *buf, | |
1603 | struct extent_buffer *parent, int parent_slot, | |
65b51a00 | 1604 | struct extent_buffer **cow_ret, u64 prealloc_dest); |
be20aa9d CM |
1605 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
1606 | struct btrfs_root *root, | |
1607 | struct extent_buffer *buf, | |
1608 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
6567e837 CM |
1609 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1610 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1611 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1612 | struct btrfs_root *root, | |
1613 | struct btrfs_path *path, | |
179e29e4 | 1614 | u32 new_size, int from_end); |
e089f05c CM |
1615 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1616 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1617 | ins_len, int cow); | |
6702ed49 | 1618 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 1619 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
1620 | int start_slot, int cache_only, u64 *last_ret, |
1621 | struct btrfs_key *progress); | |
234b63a0 | 1622 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1623 | struct btrfs_path *btrfs_alloc_path(void); |
1624 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1625 | void btrfs_init_path(struct btrfs_path *p); |
85e21bac CM |
1626 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1627 | struct btrfs_path *path, int slot, int nr); | |
1628 | ||
1629 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, | |
1630 | struct btrfs_root *root, | |
1631 | struct btrfs_path *path) | |
1632 | { | |
1633 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
1634 | } | |
1635 | ||
e089f05c CM |
1636 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1637 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
1638 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
1639 | struct btrfs_root *root, | |
1640 | struct btrfs_path *path, | |
1641 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
1642 | ||
1643 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
1644 | struct btrfs_root *root, | |
1645 | struct btrfs_path *path, | |
1646 | struct btrfs_key *key, | |
1647 | u32 data_size) | |
1648 | { | |
1649 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
1650 | } | |
1651 | ||
234b63a0 | 1652 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 1653 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 1654 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
e089f05c | 1655 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
9f3a7427 | 1656 | *root); |
dee26a9f | 1657 | /* root-item.c */ |
e089f05c CM |
1658 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1659 | struct btrfs_key *key); | |
1660 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1661 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1662 | *item); | |
1663 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1664 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1665 | *item); | |
1666 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1667 | btrfs_root_item *item, struct btrfs_key *key); | |
bf4ef679 CM |
1668 | int btrfs_search_root(struct btrfs_root *root, u64 search_start, |
1669 | u64 *found_objectid); | |
5ce14bbc CM |
1670 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, |
1671 | struct btrfs_root *latest_root); | |
dee26a9f | 1672 | /* dir-item.c */ |
e089f05c | 1673 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 | 1674 | *root, const char *name, int name_len, u64 dir, |
aec7477b | 1675 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
1676 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1677 | struct btrfs_root *root, | |
1678 | struct btrfs_path *path, u64 dir, | |
1679 | const char *name, int name_len, | |
1680 | int mod); | |
1681 | struct btrfs_dir_item * | |
1682 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1683 | struct btrfs_root *root, | |
1684 | struct btrfs_path *path, u64 dir, | |
1685 | u64 objectid, const char *name, int name_len, | |
1686 | int mod); | |
1687 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1688 | struct btrfs_path *path, | |
7f5c1516 | 1689 | const char *name, int name_len); |
7e38180e CM |
1690 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1691 | struct btrfs_root *root, | |
1692 | struct btrfs_path *path, | |
1693 | struct btrfs_dir_item *di); | |
5103e947 JB |
1694 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
1695 | struct btrfs_root *root, const char *name, | |
1696 | u16 name_len, const void *data, u16 data_len, | |
1697 | u64 dir); | |
1698 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, | |
1699 | struct btrfs_root *root, | |
1700 | struct btrfs_path *path, u64 dir, | |
1701 | const char *name, u16 name_len, | |
1702 | int mod); | |
7b128766 JB |
1703 | |
1704 | /* orphan.c */ | |
1705 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
1706 | struct btrfs_root *root, u64 offset); | |
1707 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
1708 | struct btrfs_root *root, u64 offset); | |
1709 | ||
dee26a9f | 1710 | /* inode-map.c */ |
9f5fae2f CM |
1711 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1712 | struct btrfs_root *fs_root, | |
1713 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1714 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1715 | ||
dee26a9f | 1716 | /* inode-item.c */ |
3954401f CM |
1717 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
1718 | struct btrfs_root *root, | |
1719 | const char *name, int name_len, | |
aec7477b | 1720 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
1721 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
1722 | struct btrfs_root *root, | |
1723 | const char *name, int name_len, | |
aec7477b | 1724 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
1725 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
1726 | struct btrfs_root *root, | |
1727 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 1728 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1729 | *root, struct btrfs_path *path, |
1730 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1731 | |
1732 | /* file-item.c */ | |
61b49440 CM |
1733 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
1734 | struct bio *bio); | |
b18c6685 | 1735 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1736 | struct btrfs_root *root, |
f2eb0a24 | 1737 | u64 objectid, u64 pos, u64 disk_offset, |
db94535d | 1738 | u64 disk_num_bytes, |
f2eb0a24 | 1739 | u64 num_bytes, u64 offset); |
dee26a9f CM |
1740 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1741 | struct btrfs_root *root, | |
1742 | struct btrfs_path *path, u64 objectid, | |
db94535d | 1743 | u64 bytenr, int mod); |
065631f6 CM |
1744 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
1745 | struct btrfs_root *root, struct inode *inode, | |
e6dcd2dc | 1746 | struct btrfs_ordered_sum *sums); |
3edf7d33 CM |
1747 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
1748 | struct bio *bio); | |
b18c6685 CM |
1749 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1750 | struct btrfs_root *root, | |
1751 | struct btrfs_path *path, | |
1752 | u64 objectid, u64 offset, | |
1753 | int cow); | |
1de037a4 CM |
1754 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1755 | struct btrfs_root *root, struct btrfs_path *path, | |
1756 | u64 isize); | |
39279cc3 | 1757 | /* inode.c */ |
4881ee5a CM |
1758 | |
1759 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 1760 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
1761 | #define ClearPageChecked ClearPageFsMisc |
1762 | #define SetPageChecked SetPageFsMisc | |
1763 | #define PageChecked PageFsMisc | |
1764 | #endif | |
1765 | ||
e02119d5 CM |
1766 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
1767 | struct btrfs_root *root, | |
1768 | struct inode *dir, struct inode *inode, | |
1769 | const char *name, int name_len); | |
1770 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
1771 | struct inode *parent_inode, struct inode *inode, | |
1772 | const char *name, int name_len, int add_backref, u64 index); | |
1773 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, | |
1774 | struct btrfs_root *root, | |
1775 | struct inode *inode, u64 new_size, | |
1776 | u32 min_type); | |
1777 | ||
ea8c2819 CM |
1778 | int btrfs_start_delalloc_inodes(struct btrfs_root *root); |
1779 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end); | |
f421950f CM |
1780 | int btrfs_writepages(struct address_space *mapping, |
1781 | struct writeback_control *wbc); | |
f46b5a66 CH |
1782 | int btrfs_create_subvol_root(struct btrfs_root *new_root, |
1783 | struct btrfs_trans_handle *trans, u64 new_dirid, | |
1784 | struct btrfs_block_group_cache *block_group); | |
1785 | ||
3b96362c SW |
1786 | void btrfs_invalidate_dcache_root(struct btrfs_root *root, char *name, |
1787 | int namelen); | |
1788 | ||
239b14b3 CM |
1789 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
1790 | size_t size, struct bio *bio); | |
1791 | ||
9069218d CM |
1792 | static inline void dec_i_blocks(struct inode *inode, u64 dec) |
1793 | { | |
1794 | dec = dec >> 9; | |
1795 | if (dec <= inode->i_blocks) | |
1796 | inode->i_blocks -= dec; | |
1797 | else | |
1798 | inode->i_blocks = 0; | |
1799 | } | |
1800 | ||
edbd8d4e CM |
1801 | unsigned long btrfs_force_ra(struct address_space *mapping, |
1802 | struct file_ra_state *ra, struct file *file, | |
1803 | pgoff_t offset, pgoff_t last_index); | |
1832a6d5 CM |
1804 | int btrfs_check_free_space(struct btrfs_root *root, u64 num_required, |
1805 | int for_del); | |
9ebefb18 CM |
1806 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page); |
1807 | int btrfs_readpage(struct file *file, struct page *page); | |
39279cc3 | 1808 | void btrfs_delete_inode(struct inode *inode); |
2da98f00 | 1809 | void btrfs_put_inode(struct inode *inode); |
39279cc3 CM |
1810 | void btrfs_read_locked_inode(struct inode *inode); |
1811 | int btrfs_write_inode(struct inode *inode, int wait); | |
1812 | void btrfs_dirty_inode(struct inode *inode); | |
1813 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
1814 | void btrfs_destroy_inode(struct inode *inode); | |
1815 | int btrfs_init_cachep(void); | |
1816 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 1817 | long btrfs_ioctl_trans_end(struct file *file); |
5b21f2ed ZY |
1818 | struct inode *btrfs_ilookup(struct super_block *s, u64 objectid, |
1819 | struct btrfs_root *root, int wait); | |
39279cc3 CM |
1820 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, |
1821 | struct btrfs_root *root); | |
1a54ef8c BR |
1822 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
1823 | struct btrfs_root *root, int *is_new); | |
39279cc3 CM |
1824 | int btrfs_commit_write(struct file *file, struct page *page, |
1825 | unsigned from, unsigned to); | |
a52d9a80 CM |
1826 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
1827 | size_t page_offset, u64 start, u64 end, | |
1828 | int create); | |
1829 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
1830 | struct btrfs_root *root, | |
1831 | struct inode *inode); | |
5b21f2ed ZY |
1832 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
1833 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
1834 | void btrfs_orphan_cleanup(struct btrfs_root *root); | |
f46b5a66 CH |
1835 | |
1836 | /* ioctl.c */ | |
1837 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
1838 | ||
39279cc3 | 1839 | /* file.c */ |
e02119d5 | 1840 | int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync); |
5b21f2ed ZY |
1841 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
1842 | int skip_pinned); | |
5f56406a | 1843 | int btrfs_check_file(struct btrfs_root *root, struct inode *inode); |
39279cc3 CM |
1844 | extern struct file_operations btrfs_file_operations; |
1845 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
1846 | struct btrfs_root *root, struct inode *inode, | |
00f5c795 | 1847 | u64 start, u64 end, u64 inline_limit, u64 *hint_block); |
6bf13c0c SW |
1848 | int btrfs_release_file(struct inode *inode, struct file *file); |
1849 | ||
6702ed49 CM |
1850 | /* tree-defrag.c */ |
1851 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
1852 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
1853 | |
1854 | /* sysfs.c */ | |
1855 | int btrfs_init_sysfs(void); | |
1856 | void btrfs_exit_sysfs(void); | |
1857 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
1858 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
1859 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
1860 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
1861 | ||
5103e947 JB |
1862 | /* xattr.c */ |
1863 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 1864 | |
edbd8d4e CM |
1865 | /* super.c */ |
1866 | u64 btrfs_parse_size(char *str); | |
edf24abe | 1867 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 1868 | int btrfs_sync_fs(struct super_block *sb, int wait); |
33268eaf JB |
1869 | |
1870 | /* acl.c */ | |
1871 | int btrfs_check_acl(struct inode *inode, int mask); | |
1872 | int btrfs_init_acl(struct inode *inode, struct inode *dir); | |
1873 | int btrfs_acl_chmod(struct inode *inode); | |
0f9dd46c JB |
1874 | |
1875 | /* free-space-cache.c */ | |
1876 | int btrfs_add_free_space(struct btrfs_block_group_cache *block_group, | |
1877 | u64 bytenr, u64 size); | |
1878 | int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group, | |
1879 | u64 bytenr, u64 size); | |
1880 | void btrfs_remove_free_space_cache(struct btrfs_block_group_cache | |
1881 | *block_group); | |
1882 | struct btrfs_free_space *btrfs_find_free_space(struct btrfs_block_group_cache | |
1883 | *block_group, u64 offset, | |
1884 | u64 bytes); | |
1885 | void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group, | |
1886 | u64 bytes); | |
1887 | u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group); | |
eb60ceac | 1888 | #endif |