]>
Commit | Line | Data |
---|---|---|
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 | |
537fb067 | 42 | #define BTRFS_MAGIC "_BDRfS_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 | ||
2b82032c YZ |
180 | /* expected generation for this device */ |
181 | __le64 generation; | |
182 | ||
e17cade2 CM |
183 | /* grouping information for allocation decisions */ |
184 | __le32 dev_group; | |
185 | ||
186 | /* seek speed 0-100 where 100 is fastest */ | |
187 | u8 seek_speed; | |
188 | ||
189 | /* bandwidth 0-100 where 100 is fastest */ | |
190 | u8 bandwidth; | |
191 | ||
0d81ba5d | 192 | /* btrfs generated uuid for this device */ |
e17cade2 | 193 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
194 | |
195 | /* uuid of FS who owns this device */ | |
196 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
197 | } __attribute__ ((__packed__)); |
198 | ||
199 | struct btrfs_stripe { | |
200 | __le64 devid; | |
201 | __le64 offset; | |
e17cade2 | 202 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
203 | } __attribute__ ((__packed__)); |
204 | ||
205 | struct btrfs_chunk { | |
e17cade2 CM |
206 | /* size of this chunk in bytes */ |
207 | __le64 length; | |
208 | ||
209 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 210 | __le64 owner; |
e17cade2 | 211 | |
0b86a832 CM |
212 | __le64 stripe_len; |
213 | __le64 type; | |
214 | ||
215 | /* optimal io alignment for this chunk */ | |
216 | __le32 io_align; | |
217 | ||
218 | /* optimal io width for this chunk */ | |
219 | __le32 io_width; | |
220 | ||
221 | /* minimal io size for this chunk */ | |
222 | __le32 sector_size; | |
223 | ||
224 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
225 | * item in the btree | |
226 | */ | |
227 | __le16 num_stripes; | |
321aecc6 CM |
228 | |
229 | /* sub stripes only matter for raid10 */ | |
230 | __le16 sub_stripes; | |
0b86a832 CM |
231 | struct btrfs_stripe stripe; |
232 | /* additional stripes go here */ | |
233 | } __attribute__ ((__packed__)); | |
234 | ||
235 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) | |
236 | { | |
237 | BUG_ON(num_stripes == 0); | |
238 | return sizeof(struct btrfs_chunk) + | |
239 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
240 | } | |
241 | ||
5f39d397 | 242 | #define BTRFS_FSID_SIZE 16 |
63b10fc4 CM |
243 | #define BTRFS_HEADER_FLAG_WRITTEN (1 << 0) |
244 | ||
fec577fb CM |
245 | /* |
246 | * every tree block (leaf or node) starts with this header. | |
247 | */ | |
bb492bb0 | 248 | struct btrfs_header { |
e17cade2 | 249 | /* these first four must match the super block */ |
f254e52c | 250 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 251 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 252 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 253 | __le64 flags; |
e17cade2 CM |
254 | |
255 | /* allowed to be different from the super from here on down */ | |
256 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 257 | __le64 generation; |
4d775673 | 258 | __le64 owner; |
5f39d397 | 259 | __le32 nritems; |
9a6f11ed | 260 | u8 level; |
eb60ceac CM |
261 | } __attribute__ ((__packed__)); |
262 | ||
5f39d397 | 263 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
123abc88 | 264 | sizeof(struct btrfs_header)) / \ |
74493f7a | 265 | sizeof(struct btrfs_key_ptr)) |
123abc88 | 266 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 267 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
268 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
269 | sizeof(struct btrfs_item) - \ | |
270 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 271 | |
2b82032c | 272 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
0b86a832 CM |
273 | |
274 | /* | |
275 | * this is a very generous portion of the super block, giving us | |
276 | * room to translate 14 chunks with 3 stripes each. | |
277 | */ | |
278 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 279 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 280 | |
fec577fb CM |
281 | /* |
282 | * the super block basically lists the main trees of the FS | |
283 | * it currently lacks any block count etc etc | |
284 | */ | |
234b63a0 | 285 | struct btrfs_super_block { |
f254e52c | 286 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 287 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 288 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 289 | __le64 bytenr; /* this block number */ |
63b10fc4 | 290 | __le64 flags; |
e17cade2 CM |
291 | |
292 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 293 | __le64 magic; |
3768f368 CM |
294 | __le64 generation; |
295 | __le64 root; | |
0b86a832 | 296 | __le64 chunk_root; |
e02119d5 | 297 | __le64 log_root; |
db94535d CM |
298 | __le64 total_bytes; |
299 | __le64 bytes_used; | |
2e635a27 | 300 | __le64 root_dir_objectid; |
8a4b83cc | 301 | __le64 num_devices; |
5f39d397 CM |
302 | __le32 sectorsize; |
303 | __le32 nodesize; | |
304 | __le32 leafsize; | |
87ee04eb | 305 | __le32 stripesize; |
0b86a832 | 306 | __le32 sys_chunk_array_size; |
84234f3a | 307 | __le64 chunk_root_generation; |
db94535d | 308 | u8 root_level; |
0b86a832 | 309 | u8 chunk_root_level; |
e02119d5 | 310 | u8 log_root_level; |
0d81ba5d | 311 | struct btrfs_dev_item dev_item; |
7ae9c09d | 312 | char label[BTRFS_LABEL_SIZE]; |
0b86a832 | 313 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
cfaa7295 CM |
314 | } __attribute__ ((__packed__)); |
315 | ||
fec577fb | 316 | /* |
62e2749e | 317 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
318 | * the item in the leaf (relative to the start of the data area) |
319 | */ | |
0783fcfc | 320 | struct btrfs_item { |
e2fa7227 | 321 | struct btrfs_disk_key key; |
123abc88 | 322 | __le32 offset; |
5f39d397 | 323 | __le32 size; |
eb60ceac CM |
324 | } __attribute__ ((__packed__)); |
325 | ||
fec577fb CM |
326 | /* |
327 | * leaves have an item area and a data area: | |
328 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
329 | * | |
330 | * The data is separate from the items to get the keys closer together | |
331 | * during searches. | |
332 | */ | |
234b63a0 | 333 | struct btrfs_leaf { |
bb492bb0 | 334 | struct btrfs_header header; |
123abc88 | 335 | struct btrfs_item items[]; |
eb60ceac CM |
336 | } __attribute__ ((__packed__)); |
337 | ||
fec577fb CM |
338 | /* |
339 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
340 | * other blocks | |
341 | */ | |
123abc88 CM |
342 | struct btrfs_key_ptr { |
343 | struct btrfs_disk_key key; | |
344 | __le64 blockptr; | |
74493f7a | 345 | __le64 generation; |
123abc88 CM |
346 | } __attribute__ ((__packed__)); |
347 | ||
234b63a0 | 348 | struct btrfs_node { |
bb492bb0 | 349 | struct btrfs_header header; |
123abc88 | 350 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
351 | } __attribute__ ((__packed__)); |
352 | ||
fec577fb | 353 | /* |
234b63a0 CM |
354 | * btrfs_paths remember the path taken from the root down to the leaf. |
355 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
356 | * to any other levels that are present. |
357 | * | |
358 | * The slots array records the index of the item or block pointer | |
359 | * used while walking the tree. | |
360 | */ | |
234b63a0 | 361 | struct btrfs_path { |
5f39d397 | 362 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 363 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
364 | /* if there is real range locking, this locks field will change */ |
365 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 366 | int reada; |
925baedd CM |
367 | /* keep some upper locks as we walk down */ |
368 | int keep_locks; | |
5cd57b2c | 369 | int skip_locking; |
6702ed49 | 370 | int lowest_level; |
eb60ceac | 371 | }; |
5de08d7d | 372 | |
62e2749e CM |
373 | /* |
374 | * items in the extent btree are used to record the objectid of the | |
375 | * owner of the block and the number of references | |
376 | */ | |
377 | struct btrfs_extent_item { | |
378 | __le32 refs; | |
74493f7a CM |
379 | } __attribute__ ((__packed__)); |
380 | ||
381 | struct btrfs_extent_ref { | |
382 | __le64 root; | |
383 | __le64 generation; | |
384 | __le64 objectid; | |
31840ae1 | 385 | __le32 num_refs; |
62e2749e CM |
386 | } __attribute__ ((__packed__)); |
387 | ||
0b86a832 CM |
388 | /* dev extents record free space on individual devices. The owner |
389 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 390 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
391 | */ |
392 | struct btrfs_dev_extent { | |
e17cade2 CM |
393 | __le64 chunk_tree; |
394 | __le64 chunk_objectid; | |
395 | __le64 chunk_offset; | |
0b86a832 | 396 | __le64 length; |
e17cade2 | 397 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
398 | } __attribute__ ((__packed__)); |
399 | ||
3954401f | 400 | struct btrfs_inode_ref { |
aec7477b | 401 | __le64 index; |
3954401f CM |
402 | __le16 name_len; |
403 | /* name goes here */ | |
404 | } __attribute__ ((__packed__)); | |
405 | ||
0b86a832 | 406 | struct btrfs_timespec { |
f254e52c | 407 | __le64 sec; |
1e1d2701 CM |
408 | __le32 nsec; |
409 | } __attribute__ ((__packed__)); | |
410 | ||
c8b97818 CM |
411 | typedef enum { |
412 | BTRFS_COMPRESS_NONE = 0, | |
413 | BTRFS_COMPRESS_ZLIB = 1, | |
414 | BTRFS_COMPRESS_LAST = 2, | |
415 | } btrfs_compression_type; | |
416 | ||
417 | /* we don't understand any encryption methods right now */ | |
418 | typedef enum { | |
419 | BTRFS_ENCRYPTION_NONE = 0, | |
420 | BTRFS_ENCRYPTION_LAST = 1, | |
421 | } btrfs_encryption_type; | |
422 | ||
1e1d2701 | 423 | struct btrfs_inode_item { |
e02119d5 | 424 | /* nfs style generation number */ |
1e1d2701 | 425 | __le64 generation; |
e02119d5 CM |
426 | /* transid that last touched this inode */ |
427 | __le64 transid; | |
1e1d2701 | 428 | __le64 size; |
a76a3cd4 | 429 | __le64 nbytes; |
31f3c99b | 430 | __le64 block_group; |
1e1d2701 CM |
431 | __le32 nlink; |
432 | __le32 uid; | |
433 | __le32 gid; | |
434 | __le32 mode; | |
0b86a832 | 435 | __le64 rdev; |
1e1d2701 CM |
436 | __le16 flags; |
437 | __le16 compat_flags; | |
c8b97818 | 438 | |
0b86a832 CM |
439 | struct btrfs_timespec atime; |
440 | struct btrfs_timespec ctime; | |
441 | struct btrfs_timespec mtime; | |
442 | struct btrfs_timespec otime; | |
1e1d2701 CM |
443 | } __attribute__ ((__packed__)); |
444 | ||
e02119d5 CM |
445 | struct btrfs_dir_log_item { |
446 | __le64 end; | |
447 | } __attribute__ ((__packed__)); | |
448 | ||
62e2749e | 449 | struct btrfs_dir_item { |
d6e4a428 | 450 | struct btrfs_disk_key location; |
e02119d5 | 451 | __le64 transid; |
5103e947 | 452 | __le16 data_len; |
a8a2ee0c | 453 | __le16 name_len; |
62e2749e CM |
454 | u8 type; |
455 | } __attribute__ ((__packed__)); | |
456 | ||
457 | struct btrfs_root_item { | |
d6e4a428 | 458 | struct btrfs_inode_item inode; |
84234f3a | 459 | __le64 generation; |
d6e4a428 | 460 | __le64 root_dirid; |
db94535d CM |
461 | __le64 bytenr; |
462 | __le64 byte_limit; | |
463 | __le64 bytes_used; | |
80ff3856 | 464 | __le64 last_snapshot; |
5eda7b5e | 465 | __le32 flags; |
62e2749e | 466 | __le32 refs; |
5eda7b5e CM |
467 | struct btrfs_disk_key drop_progress; |
468 | u8 drop_level; | |
db94535d | 469 | u8 level; |
9f5fae2f | 470 | } __attribute__ ((__packed__)); |
62e2749e | 471 | |
d899e052 YZ |
472 | #define BTRFS_FILE_EXTENT_INLINE 0 |
473 | #define BTRFS_FILE_EXTENT_REG 1 | |
474 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 475 | |
9f5fae2f | 476 | struct btrfs_file_extent_item { |
c8b97818 CM |
477 | /* |
478 | * transaction id that created this extent | |
479 | */ | |
71951f35 | 480 | __le64 generation; |
c8b97818 CM |
481 | /* |
482 | * max number of bytes to hold this extent in ram | |
483 | * when we split a compressed extent we can't know how big | |
484 | * each of the resulting pieces will be. So, this is | |
485 | * an upper limit on the size of the extent in ram instead of | |
486 | * an exact limit. | |
487 | */ | |
488 | __le64 ram_bytes; | |
489 | ||
490 | /* | |
491 | * 32 bits for the various ways we might encode the data, | |
492 | * including compression and encryption. If any of these | |
493 | * are set to something a given disk format doesn't understand | |
494 | * it is treated like an incompat flag for reading and writing, | |
495 | * but not for stat. | |
496 | */ | |
497 | u8 compression; | |
498 | u8 encryption; | |
499 | __le16 other_encoding; /* spare for later use */ | |
500 | ||
501 | /* are we inline data or a real extent? */ | |
236454df | 502 | u8 type; |
c8b97818 | 503 | |
9f5fae2f CM |
504 | /* |
505 | * disk space consumed by the extent, checksum blocks are included | |
506 | * in these numbers | |
507 | */ | |
db94535d CM |
508 | __le64 disk_bytenr; |
509 | __le64 disk_num_bytes; | |
9f5fae2f | 510 | /* |
dee26a9f | 511 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
512 | * this extent record is for. This allows a file extent to point |
513 | * into the middle of an existing extent on disk, sharing it | |
514 | * between two snapshots (useful if some bytes in the middle of the | |
515 | * extent have changed | |
516 | */ | |
517 | __le64 offset; | |
518 | /* | |
c8b97818 CM |
519 | * the logical number of file blocks (no csums included). This |
520 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 521 | */ |
db94535d | 522 | __le64 num_bytes; |
c8b97818 | 523 | |
9f5fae2f CM |
524 | } __attribute__ ((__packed__)); |
525 | ||
f254e52c | 526 | struct btrfs_csum_item { |
509659cd | 527 | u8 csum; |
f254e52c CM |
528 | } __attribute__ ((__packed__)); |
529 | ||
0b86a832 CM |
530 | /* different types of block groups (and chunks) */ |
531 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
532 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
533 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 534 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 535 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 536 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 537 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
1e2677e0 | 538 | |
9078a3e1 CM |
539 | struct btrfs_block_group_item { |
540 | __le64 used; | |
0b86a832 CM |
541 | __le64 chunk_objectid; |
542 | __le64 flags; | |
9078a3e1 CM |
543 | } __attribute__ ((__packed__)); |
544 | ||
6324fbf3 CM |
545 | struct btrfs_space_info { |
546 | u64 flags; | |
547 | u64 total_bytes; | |
548 | u64 bytes_used; | |
549 | u64 bytes_pinned; | |
e8569813 | 550 | u64 bytes_reserved; |
c146afad | 551 | u64 bytes_readonly; |
6324fbf3 | 552 | int full; |
0ef3e66b | 553 | int force_alloc; |
6324fbf3 | 554 | struct list_head list; |
0f9dd46c JB |
555 | |
556 | /* for block groups in our same type */ | |
557 | struct list_head block_groups; | |
558 | spinlock_t lock; | |
80eb234a | 559 | struct rw_semaphore groups_sem; |
0f9dd46c JB |
560 | }; |
561 | ||
562 | struct btrfs_free_space { | |
563 | struct rb_node bytes_index; | |
564 | struct rb_node offset_index; | |
565 | u64 offset; | |
566 | u64 bytes; | |
6324fbf3 CM |
567 | }; |
568 | ||
9078a3e1 CM |
569 | struct btrfs_block_group_cache { |
570 | struct btrfs_key key; | |
571 | struct btrfs_block_group_item item; | |
c286ac48 | 572 | spinlock_t lock; |
25179201 | 573 | struct mutex alloc_mutex; |
324ae4df | 574 | u64 pinned; |
e8569813 | 575 | u64 reserved; |
0b86a832 CM |
576 | u64 flags; |
577 | int cached; | |
8f18cf13 | 578 | int ro; |
0f9dd46c JB |
579 | int dirty; |
580 | ||
581 | struct btrfs_space_info *space_info; | |
582 | ||
583 | /* free space cache stuff */ | |
584 | struct rb_root free_space_bytes; | |
585 | struct rb_root free_space_offset; | |
586 | ||
587 | /* block group cache stuff */ | |
588 | struct rb_node cache_node; | |
589 | ||
590 | /* for block groups in the same raid type */ | |
591 | struct list_head list; | |
9078a3e1 | 592 | }; |
0b86a832 | 593 | |
e4657689 ZY |
594 | struct btrfs_leaf_ref_tree { |
595 | struct rb_root root; | |
596 | struct list_head list; | |
597 | spinlock_t lock; | |
598 | }; | |
599 | ||
0b86a832 | 600 | struct btrfs_device; |
8a4b83cc | 601 | struct btrfs_fs_devices; |
9f5fae2f | 602 | struct btrfs_fs_info { |
5f39d397 | 603 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 604 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
605 | struct btrfs_root *extent_root; |
606 | struct btrfs_root *tree_root; | |
0b86a832 CM |
607 | struct btrfs_root *chunk_root; |
608 | struct btrfs_root *dev_root; | |
3de4586c | 609 | struct btrfs_root *fs_root; |
e02119d5 CM |
610 | |
611 | /* the log root tree is a directory of all the other log roots */ | |
612 | struct btrfs_root *log_root_tree; | |
0f7d52f4 | 613 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 614 | |
0f9dd46c JB |
615 | /* block group cache stuff */ |
616 | spinlock_t block_group_cache_lock; | |
617 | struct rb_root block_group_cache_tree; | |
618 | ||
d1310b2e CM |
619 | struct extent_io_tree pinned_extents; |
620 | struct extent_io_tree pending_del; | |
621 | struct extent_io_tree extent_ins; | |
1a5bc167 | 622 | |
0b86a832 CM |
623 | /* logical->physical extent mapping */ |
624 | struct btrfs_mapping_tree mapping_tree; | |
625 | ||
293ffd5f | 626 | u64 generation; |
15ee9bc7 | 627 | u64 last_trans_committed; |
e02119d5 | 628 | u64 last_trans_new_blockgroup; |
9ca9ee09 | 629 | u64 open_ioctl_trans; |
b6cda9bc | 630 | unsigned long mount_opt; |
c59f8951 | 631 | u64 max_extent; |
6f568d35 | 632 | u64 max_inline; |
8f662a76 | 633 | u64 alloc_start; |
79154b1b | 634 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 635 | wait_queue_head_t transaction_throttle; |
f9295749 | 636 | wait_queue_head_t transaction_wait; |
e02119d5 | 637 | |
771ed689 | 638 | wait_queue_head_t async_submit_wait; |
e02119d5 CM |
639 | wait_queue_head_t tree_log_wait; |
640 | ||
4b52dff6 | 641 | struct btrfs_super_block super_copy; |
a061fc8d | 642 | struct btrfs_super_block super_for_commit; |
0b86a832 | 643 | struct block_device *__bdev; |
e20d96d6 | 644 | struct super_block *sb; |
d98237b3 | 645 | struct inode *btree_inode; |
04160088 | 646 | struct backing_dev_info bdi; |
19c00ddc | 647 | spinlock_t hash_lock; |
79154b1b | 648 | struct mutex trans_mutex; |
e02119d5 | 649 | struct mutex tree_log_mutex; |
a74a4b97 CM |
650 | struct mutex transaction_kthread_mutex; |
651 | struct mutex cleaner_mutex; | |
25179201 JB |
652 | struct mutex extent_ins_mutex; |
653 | struct mutex pinned_mutex; | |
925baedd | 654 | struct mutex chunk_mutex; |
a2135011 | 655 | struct mutex drop_mutex; |
7d9eb12c | 656 | struct mutex volume_mutex; |
1a40e23b | 657 | struct mutex tree_reloc_mutex; |
8fd17795 | 658 | struct list_head trans_list; |
19c00ddc | 659 | struct list_head hashers; |
facda1e7 | 660 | struct list_head dead_roots; |
e02119d5 | 661 | |
cb03c743 | 662 | atomic_t nr_async_submits; |
8c8bee1d | 663 | atomic_t async_submit_draining; |
0986fe9e | 664 | atomic_t nr_async_bios; |
771ed689 | 665 | atomic_t async_delalloc_pages; |
e02119d5 CM |
666 | atomic_t tree_log_writers; |
667 | atomic_t tree_log_commit; | |
668 | unsigned long tree_log_batch; | |
669 | u64 tree_log_transid; | |
ce9adaa5 | 670 | |
3eaa2885 CM |
671 | /* |
672 | * this is used by the balancing code to wait for all the pending | |
673 | * ordered extents | |
674 | */ | |
675 | spinlock_t ordered_extent_lock; | |
676 | struct list_head ordered_extents; | |
ea8c2819 | 677 | struct list_head delalloc_inodes; |
3eaa2885 | 678 | |
8b712842 CM |
679 | /* |
680 | * there is a pool of worker threads for checksumming during writes | |
681 | * and a pool for checksumming after reads. This is because readers | |
682 | * can run with FS locks held, and the writers may be waiting for | |
683 | * those locks. We don't want ordering in the pending list to cause | |
684 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
685 | * |
686 | * A third pool does submit_bio to avoid deadlocking with the other | |
687 | * two | |
8b712842 CM |
688 | */ |
689 | struct btrfs_workers workers; | |
771ed689 | 690 | struct btrfs_workers delalloc_workers; |
8b712842 | 691 | struct btrfs_workers endio_workers; |
e6dcd2dc | 692 | struct btrfs_workers endio_write_workers; |
1cc127b5 | 693 | struct btrfs_workers submit_workers; |
247e743c CM |
694 | /* |
695 | * fixup workers take dirty pages that didn't properly go through | |
696 | * the cow mechanism and make them safe to write. It happens | |
697 | * for the sys_munmap function call path | |
698 | */ | |
699 | struct btrfs_workers fixup_workers; | |
a74a4b97 CM |
700 | struct task_struct *transaction_kthread; |
701 | struct task_struct *cleaner_kthread; | |
4543df7e | 702 | int thread_pool_size; |
8b712842 | 703 | |
1a40e23b | 704 | /* tree relocation relocated fields */ |
1a40e23b ZY |
705 | struct list_head dead_reloc_roots; |
706 | struct btrfs_leaf_ref_tree reloc_ref_tree; | |
e4657689 ZY |
707 | struct btrfs_leaf_ref_tree shared_ref_tree; |
708 | ||
58176a96 JB |
709 | struct kobject super_kobj; |
710 | struct completion kobj_unregister; | |
e66f709b | 711 | int do_barriers; |
facda1e7 | 712 | int closing; |
e02119d5 | 713 | int log_root_recovering; |
a2135011 | 714 | atomic_t throttles; |
ab78c84d | 715 | atomic_t throttle_gen; |
9f5fae2f | 716 | |
324ae4df | 717 | u64 total_pinned; |
0b86a832 CM |
718 | struct list_head dirty_cowonly_roots; |
719 | ||
8a4b83cc | 720 | struct btrfs_fs_devices *fs_devices; |
6324fbf3 | 721 | struct list_head space_info; |
1832a6d5 | 722 | spinlock_t delalloc_lock; |
cee36a03 | 723 | spinlock_t new_trans_lock; |
1832a6d5 | 724 | u64 delalloc_bytes; |
e18e4809 | 725 | u64 last_alloc; |
4529ba49 | 726 | u64 last_data_alloc; |
d18a2c44 | 727 | |
31153d81 YZ |
728 | spinlock_t ref_cache_lock; |
729 | u64 total_ref_cache_size; | |
31153d81 | 730 | |
d18a2c44 CM |
731 | u64 avail_data_alloc_bits; |
732 | u64 avail_metadata_alloc_bits; | |
733 | u64 avail_system_alloc_bits; | |
734 | u64 data_alloc_profile; | |
735 | u64 metadata_alloc_profile; | |
736 | u64 system_alloc_profile; | |
788f20eb CM |
737 | |
738 | void *bdev_holder; | |
324ae4df | 739 | }; |
0b86a832 | 740 | |
9f5fae2f CM |
741 | /* |
742 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 743 | * and for the extent tree extent_root root. |
9f5fae2f | 744 | */ |
f321e491 | 745 | struct btrfs_dirty_root; |
9f5fae2f | 746 | struct btrfs_root { |
5f39d397 | 747 | struct extent_buffer *node; |
925baedd CM |
748 | |
749 | /* the node lock is held while changing the node pointer */ | |
750 | spinlock_t node_lock; | |
751 | ||
5f39d397 | 752 | struct extent_buffer *commit_root; |
31153d81 | 753 | struct btrfs_leaf_ref_tree *ref_tree; |
017e5369 | 754 | struct btrfs_leaf_ref_tree ref_tree_struct; |
f321e491 | 755 | struct btrfs_dirty_root *dirty_root; |
e02119d5 | 756 | struct btrfs_root *log_root; |
1a40e23b | 757 | struct btrfs_root *reloc_root; |
31153d81 | 758 | |
62e2749e CM |
759 | struct btrfs_root_item root_item; |
760 | struct btrfs_key root_key; | |
9f5fae2f | 761 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
762 | struct extent_io_tree dirty_log_pages; |
763 | ||
58176a96 JB |
764 | struct kobject root_kobj; |
765 | struct completion kobj_unregister; | |
a2135011 | 766 | struct mutex objectid_mutex; |
e02119d5 | 767 | struct mutex log_mutex; |
ea8c2819 | 768 | |
0f7d52f4 CM |
769 | u64 objectid; |
770 | u64 last_trans; | |
5f39d397 CM |
771 | |
772 | /* data allocations are done in sectorsize units */ | |
773 | u32 sectorsize; | |
774 | ||
775 | /* node allocations are done in nodesize units */ | |
776 | u32 nodesize; | |
777 | ||
778 | /* leaf allocations are done in leafsize units */ | |
779 | u32 leafsize; | |
780 | ||
87ee04eb CM |
781 | u32 stripesize; |
782 | ||
9f5fae2f | 783 | u32 type; |
1b05da2e CM |
784 | u64 highest_inode; |
785 | u64 last_inode_alloc; | |
9f3a7427 | 786 | int ref_cows; |
0b86a832 | 787 | int track_dirty; |
3f157a2f | 788 | u64 defrag_trans_start; |
6702ed49 | 789 | struct btrfs_key defrag_progress; |
0ef3e66b | 790 | struct btrfs_key defrag_max; |
6702ed49 CM |
791 | int defrag_running; |
792 | int defrag_level; | |
58176a96 | 793 | char *name; |
4313b399 | 794 | int in_sysfs; |
0b86a832 CM |
795 | |
796 | /* the dirty list is only used by non-reference counted roots */ | |
797 | struct list_head dirty_list; | |
7b128766 | 798 | |
bcc63abb Y |
799 | spinlock_t list_lock; |
800 | struct list_head dead_list; | |
7b128766 | 801 | struct list_head orphan_list; |
62e2749e CM |
802 | }; |
803 | ||
1e1d2701 | 804 | /* |
0b86a832 | 805 | |
1e1d2701 CM |
806 | * inode items have the data typically returned from stat and store other |
807 | * info about object characteristics. There is one for every file and dir in | |
808 | * the FS | |
809 | */ | |
9078a3e1 | 810 | #define BTRFS_INODE_ITEM_KEY 1 |
3954401f CM |
811 | #define BTRFS_INODE_REF_KEY 2 |
812 | #define BTRFS_XATTR_ITEM_KEY 8 | |
7b128766 | 813 | #define BTRFS_ORPHAN_ITEM_KEY 9 |
9078a3e1 | 814 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
815 | |
816 | /* | |
817 | * dir items are the name -> inode pointers in a directory. There is one | |
818 | * for every name in a directory. | |
819 | */ | |
e02119d5 CM |
820 | #define BTRFS_DIR_LOG_ITEM_KEY 14 |
821 | #define BTRFS_DIR_LOG_INDEX_KEY 15 | |
9078a3e1 CM |
822 | #define BTRFS_DIR_ITEM_KEY 16 |
823 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 824 | /* |
9078a3e1 | 825 | * extent data is for file data |
1e1d2701 | 826 | */ |
9078a3e1 | 827 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
828 | /* |
829 | * csum items have the checksums for data in the extents | |
830 | */ | |
9078a3e1 CM |
831 | #define BTRFS_CSUM_ITEM_KEY 19 |
832 | ||
e02119d5 CM |
833 | |
834 | /* reserve 21-31 for other file/dir stuff */ | |
f254e52c | 835 | |
1e1d2701 CM |
836 | /* |
837 | * root items point to tree roots. There are typically in the root | |
838 | * tree used by the super block to find all the other trees | |
839 | */ | |
9078a3e1 | 840 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
841 | /* |
842 | * extent items are in the extent map tree. These record which blocks | |
843 | * are used, and how many references there are to each block | |
844 | */ | |
9078a3e1 | 845 | #define BTRFS_EXTENT_ITEM_KEY 33 |
74493f7a | 846 | #define BTRFS_EXTENT_REF_KEY 34 |
9078a3e1 CM |
847 | |
848 | /* | |
849 | * block groups give us hints into the extent allocation trees. Which | |
850 | * blocks are free etc etc | |
851 | */ | |
74493f7a | 852 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 50 |
9f5fae2f | 853 | |
0b86a832 CM |
854 | #define BTRFS_DEV_EXTENT_KEY 75 |
855 | #define BTRFS_DEV_ITEM_KEY 76 | |
856 | #define BTRFS_CHUNK_ITEM_KEY 77 | |
857 | ||
1e1d2701 CM |
858 | /* |
859 | * string items are for debugging. They just store a short string of | |
860 | * data in the FS | |
861 | */ | |
9078a3e1 CM |
862 | #define BTRFS_STRING_ITEM_KEY 253 |
863 | ||
21ad10cf CM |
864 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
865 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
866 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 867 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 868 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 869 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
b6cda9bc CM |
870 | |
871 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
872 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
873 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
874 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
875 | /* |
876 | * Inode flags | |
877 | */ | |
fdebe2bd Y |
878 | #define BTRFS_INODE_NODATASUM (1 << 0) |
879 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
880 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 881 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 882 | #define BTRFS_INODE_PREALLOC (1 << 4) |
b98b6767 Y |
883 | #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \ |
884 | ~BTRFS_INODE_##flag) | |
885 | #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \ | |
886 | BTRFS_INODE_##flag) | |
887 | #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \ | |
888 | BTRFS_INODE_##flag) | |
5f39d397 CM |
889 | /* some macros to generate set/get funcs for the struct fields. This |
890 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
891 | * one for u8: | |
892 | */ | |
893 | #define le8_to_cpu(v) (v) | |
894 | #define cpu_to_le8(v) (v) | |
895 | #define __le8 u8 | |
896 | ||
897 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
898 | read_extent_buffer(eb, (char *)(result), \ | |
899 | ((unsigned long)(ptr)) + \ | |
900 | offsetof(type, member), \ | |
901 | sizeof(((type *)0)->member))) | |
902 | ||
903 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
904 | write_extent_buffer(eb, (char *)(result), \ | |
905 | ((unsigned long)(ptr)) + \ | |
906 | offsetof(type, member), \ | |
907 | sizeof(((type *)0)->member))) | |
908 | ||
0f82731f | 909 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 910 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
911 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
912 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
913 | #endif | |
5f39d397 CM |
914 | |
915 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
916 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
917 | { \ | |
df68b8a7 DM |
918 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
919 | u##bits res = le##bits##_to_cpu(p->member); \ | |
920 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 921 | return res; \ |
5f39d397 CM |
922 | } \ |
923 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
924 | u##bits val) \ | |
925 | { \ | |
df68b8a7 DM |
926 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
927 | p->member = cpu_to_le##bits(val); \ | |
928 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 929 | } |
9078a3e1 | 930 | |
5f39d397 CM |
931 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
932 | static inline u##bits btrfs_##name(type *s) \ | |
933 | { \ | |
934 | return le##bits##_to_cpu(s->member); \ | |
935 | } \ | |
936 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
937 | { \ | |
938 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
939 | } |
940 | ||
0b86a832 CM |
941 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
942 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
943 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
944 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
945 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
946 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); | |
947 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
948 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
949 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
950 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 951 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 952 | |
8a4b83cc CM |
953 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
954 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
955 | total_bytes, 64); | |
956 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
957 | bytes_used, 64); | |
958 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
959 | io_align, 32); | |
960 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
961 | io_width, 32); | |
962 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
963 | sector_size, 32); | |
964 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
965 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
966 | dev_group, 32); | |
967 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
968 | seek_speed, 8); | |
969 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
970 | bandwidth, 8); | |
2b82032c YZ |
971 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
972 | generation, 64); | |
8a4b83cc | 973 | |
0b86a832 CM |
974 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
975 | { | |
976 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
977 | } | |
978 | ||
2b82032c YZ |
979 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
980 | { | |
981 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
982 | } | |
983 | ||
e17cade2 | 984 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
985 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
986 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
987 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
988 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
989 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
990 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
991 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 992 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
993 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
994 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
995 | ||
e17cade2 CM |
996 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
997 | { | |
998 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
999 | } | |
1000 | ||
1001 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1002 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1003 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1004 | stripe_len, 64); | |
1005 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1006 | io_align, 32); | |
1007 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1008 | io_width, 32); | |
1009 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1010 | sector_size, 32); | |
1011 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1012 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1013 | num_stripes, 16); | |
321aecc6 CM |
1014 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1015 | sub_stripes, 16); | |
0b86a832 CM |
1016 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1017 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1018 | ||
1019 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1020 | int nr) | |
1021 | { | |
1022 | unsigned long offset = (unsigned long)c; | |
1023 | offset += offsetof(struct btrfs_chunk, stripe); | |
1024 | offset += nr * sizeof(struct btrfs_stripe); | |
1025 | return (struct btrfs_stripe *)offset; | |
1026 | } | |
1027 | ||
a443755f CM |
1028 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1029 | { | |
1030 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1031 | } | |
1032 | ||
0b86a832 CM |
1033 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1034 | struct btrfs_chunk *c, int nr) | |
1035 | { | |
1036 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1037 | } | |
1038 | ||
1039 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, | |
1040 | struct btrfs_chunk *c, int nr, | |
1041 | u64 val) | |
1042 | { | |
1043 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
1044 | } | |
1045 | ||
1046 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, | |
1047 | struct btrfs_chunk *c, int nr) | |
1048 | { | |
1049 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1050 | } | |
1051 | ||
1052 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, | |
1053 | struct btrfs_chunk *c, int nr, | |
1054 | u64 val) | |
1055 | { | |
1056 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
1057 | } | |
1058 | ||
5f39d397 CM |
1059 | /* struct btrfs_block_group_item */ |
1060 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1061 | used, 64); | |
1062 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1063 | used, 64); | |
0b86a832 CM |
1064 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1065 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1066 | |
1067 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1068 | struct btrfs_block_group_item, chunk_objectid, 64); |
1069 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1070 | struct btrfs_block_group_item, flags, 64); | |
1071 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1072 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1073 | |
3954401f CM |
1074 | /* struct btrfs_inode_ref */ |
1075 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1076 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1077 | |
5f39d397 CM |
1078 | /* struct btrfs_inode_item */ |
1079 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
e02119d5 | 1080 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1081 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1082 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1083 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1084 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1085 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1086 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1087 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1088 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
5f39d397 CM |
1089 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 16); |
1090 | BTRFS_SETGET_FUNCS(inode_compat_flags, struct btrfs_inode_item, | |
1091 | compat_flags, 16); | |
1e1d2701 | 1092 | |
0b86a832 | 1093 | static inline struct btrfs_timespec * |
5f39d397 | 1094 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1095 | { |
5f39d397 CM |
1096 | unsigned long ptr = (unsigned long)inode_item; |
1097 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1098 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1099 | } |
1100 | ||
0b86a832 | 1101 | static inline struct btrfs_timespec * |
5f39d397 | 1102 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1103 | { |
5f39d397 CM |
1104 | unsigned long ptr = (unsigned long)inode_item; |
1105 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1106 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1107 | } |
1108 | ||
0b86a832 | 1109 | static inline struct btrfs_timespec * |
5f39d397 | 1110 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1111 | { |
5f39d397 CM |
1112 | unsigned long ptr = (unsigned long)inode_item; |
1113 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1114 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1115 | } |
1116 | ||
0b86a832 | 1117 | static inline struct btrfs_timespec * |
5f39d397 | 1118 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1119 | { |
5f39d397 CM |
1120 | unsigned long ptr = (unsigned long)inode_item; |
1121 | ptr += offsetof(struct btrfs_inode_item, otime); | |
0b86a832 | 1122 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1123 | } |
1124 | ||
0b86a832 CM |
1125 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1126 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1127 | |
0b86a832 | 1128 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1129 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1130 | chunk_tree, 64); | |
1131 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1132 | chunk_objectid, 64); | |
1133 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1134 | chunk_offset, 64); | |
0b86a832 CM |
1135 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1136 | ||
e17cade2 CM |
1137 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1138 | { | |
1139 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1140 | return (u8 *)((unsigned long)dev + ptr); | |
1141 | } | |
1142 | ||
74493f7a CM |
1143 | /* struct btrfs_extent_ref */ |
1144 | BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64); | |
1145 | BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64); | |
1146 | BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64); | |
31840ae1 | 1147 | BTRFS_SETGET_FUNCS(ref_num_refs, struct btrfs_extent_ref, num_refs, 32); |
74493f7a | 1148 | |
7bb86316 CM |
1149 | BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64); |
1150 | BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref, | |
74493f7a | 1151 | generation, 64); |
7bb86316 CM |
1152 | BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref, |
1153 | objectid, 64); | |
31840ae1 ZY |
1154 | BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs, struct btrfs_extent_ref, |
1155 | num_refs, 32); | |
e20d96d6 | 1156 | |
31840ae1 ZY |
1157 | /* struct btrfs_extent_item */ |
1158 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32); | |
5f39d397 CM |
1159 | BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, |
1160 | refs, 32); | |
e20d96d6 | 1161 | |
5f39d397 CM |
1162 | /* struct btrfs_node */ |
1163 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1164 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1165 | |
5f39d397 | 1166 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1167 | { |
5f39d397 CM |
1168 | unsigned long ptr; |
1169 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1170 | sizeof(struct btrfs_key_ptr) * nr; | |
1171 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1172 | } |
1173 | ||
5f39d397 CM |
1174 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1175 | int nr, u64 val) | |
cf27e1ee | 1176 | { |
5f39d397 CM |
1177 | unsigned long ptr; |
1178 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1179 | sizeof(struct btrfs_key_ptr) * nr; | |
1180 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1181 | } |
1182 | ||
74493f7a CM |
1183 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1184 | { | |
1185 | unsigned long ptr; | |
1186 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1187 | sizeof(struct btrfs_key_ptr) * nr; | |
1188 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1189 | } | |
1190 | ||
1191 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1192 | int nr, u64 val) | |
1193 | { | |
1194 | unsigned long ptr; | |
1195 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1196 | sizeof(struct btrfs_key_ptr) * nr; | |
1197 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1198 | } | |
1199 | ||
810191ff | 1200 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1201 | { |
5f39d397 CM |
1202 | return offsetof(struct btrfs_node, ptrs) + |
1203 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1204 | } |
1205 | ||
e644d021 CM |
1206 | void btrfs_node_key(struct extent_buffer *eb, |
1207 | struct btrfs_disk_key *disk_key, int nr); | |
1208 | ||
5f39d397 CM |
1209 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1210 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1211 | { |
5f39d397 CM |
1212 | unsigned long ptr; |
1213 | ptr = btrfs_node_key_ptr_offset(nr); | |
1214 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1215 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1216 | } |
1217 | ||
5f39d397 CM |
1218 | /* struct btrfs_item */ |
1219 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1220 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1221 | |
5f39d397 | 1222 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1223 | { |
5f39d397 CM |
1224 | return offsetof(struct btrfs_leaf, items) + |
1225 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1226 | } |
1227 | ||
5f39d397 CM |
1228 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1229 | int nr) | |
0783fcfc | 1230 | { |
5f39d397 | 1231 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1232 | } |
1233 | ||
5f39d397 CM |
1234 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1235 | struct btrfs_item *item) | |
0783fcfc | 1236 | { |
5f39d397 | 1237 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1238 | } |
1239 | ||
5f39d397 | 1240 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1241 | { |
5f39d397 | 1242 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1243 | } |
1244 | ||
5f39d397 | 1245 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1246 | { |
5f39d397 | 1247 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1248 | } |
1249 | ||
5f39d397 | 1250 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1251 | { |
5f39d397 | 1252 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1253 | } |
1254 | ||
5f39d397 CM |
1255 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1256 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1257 | { |
5f39d397 CM |
1258 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1259 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1260 | } |
1261 | ||
5f39d397 CM |
1262 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1263 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1264 | { |
5f39d397 CM |
1265 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1266 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1267 | } |
1268 | ||
e02119d5 CM |
1269 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1270 | ||
5f39d397 | 1271 | /* struct btrfs_dir_item */ |
5103e947 | 1272 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1273 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1274 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1275 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1276 | |
5f39d397 CM |
1277 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1278 | struct btrfs_dir_item *item, | |
1279 | struct btrfs_disk_key *key) | |
1d4f6404 | 1280 | { |
5f39d397 | 1281 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1282 | } |
1283 | ||
5f39d397 CM |
1284 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1285 | struct btrfs_dir_item *item, | |
1286 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1287 | { |
5f39d397 | 1288 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1289 | } |
1290 | ||
5f39d397 CM |
1291 | /* struct btrfs_disk_key */ |
1292 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1293 | objectid, 64); | |
1294 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1295 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1296 | |
e2fa7227 CM |
1297 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1298 | struct btrfs_disk_key *disk) | |
1299 | { | |
1300 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1301 | cpu->type = disk->type; |
e2fa7227 CM |
1302 | cpu->objectid = le64_to_cpu(disk->objectid); |
1303 | } | |
1304 | ||
1305 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1306 | struct btrfs_key *cpu) | |
1307 | { | |
1308 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1309 | disk->type = cpu->type; |
e2fa7227 CM |
1310 | disk->objectid = cpu_to_le64(cpu->objectid); |
1311 | } | |
1312 | ||
5f39d397 CM |
1313 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1314 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1315 | { |
5f39d397 CM |
1316 | struct btrfs_disk_key disk_key; |
1317 | btrfs_node_key(eb, &disk_key, nr); | |
1318 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1319 | } |
1320 | ||
5f39d397 CM |
1321 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1322 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1323 | { |
5f39d397 CM |
1324 | struct btrfs_disk_key disk_key; |
1325 | btrfs_item_key(eb, &disk_key, nr); | |
1326 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1327 | } |
1328 | ||
5f39d397 CM |
1329 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1330 | struct btrfs_dir_item *item, | |
1331 | struct btrfs_key *key) | |
4d775673 | 1332 | { |
5f39d397 CM |
1333 | struct btrfs_disk_key disk_key; |
1334 | btrfs_dir_item_key(eb, item, &disk_key); | |
1335 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1336 | } |
1337 | ||
58176a96 | 1338 | |
5f39d397 | 1339 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1340 | { |
5f39d397 | 1341 | return key->type; |
3768f368 CM |
1342 | } |
1343 | ||
5f39d397 | 1344 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1345 | { |
5f39d397 | 1346 | key->type = val; |
3768f368 CM |
1347 | } |
1348 | ||
5f39d397 | 1349 | /* struct btrfs_header */ |
db94535d | 1350 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1351 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1352 | generation, 64); | |
1353 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1354 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1355 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1356 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1357 | |
63b10fc4 CM |
1358 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1359 | { | |
1360 | return (btrfs_header_flags(eb) & flag) == flag; | |
1361 | } | |
1362 | ||
1363 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1364 | { | |
1365 | u64 flags = btrfs_header_flags(eb); | |
1366 | btrfs_set_header_flags(eb, flags | flag); | |
1367 | return (flags & flag) == flag; | |
1368 | } | |
1369 | ||
1370 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1371 | { | |
1372 | u64 flags = btrfs_header_flags(eb); | |
1373 | btrfs_set_header_flags(eb, flags & ~flag); | |
1374 | return (flags & flag) == flag; | |
1375 | } | |
1376 | ||
5f39d397 | 1377 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1378 | { |
5f39d397 CM |
1379 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1380 | return (u8 *)ptr; | |
0f7d52f4 CM |
1381 | } |
1382 | ||
e17cade2 CM |
1383 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1384 | { | |
1385 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1386 | return (u8 *)ptr; | |
1387 | } | |
1388 | ||
5f39d397 | 1389 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 1390 | { |
5f39d397 CM |
1391 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
1392 | return (u8 *)ptr; | |
3768f368 CM |
1393 | } |
1394 | ||
5f39d397 | 1395 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 1396 | { |
5f39d397 CM |
1397 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
1398 | return (u8 *)ptr; | |
3768f368 CM |
1399 | } |
1400 | ||
5f39d397 | 1401 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 1402 | { |
5f39d397 | 1403 | return NULL; |
3768f368 CM |
1404 | } |
1405 | ||
5f39d397 | 1406 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 1407 | { |
5f39d397 | 1408 | return NULL; |
3768f368 CM |
1409 | } |
1410 | ||
5f39d397 | 1411 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 1412 | { |
5f39d397 | 1413 | return NULL; |
3768f368 CM |
1414 | } |
1415 | ||
5f39d397 | 1416 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1417 | { |
5f39d397 | 1418 | return (btrfs_header_level(eb) == 0); |
3768f368 CM |
1419 | } |
1420 | ||
5f39d397 | 1421 | /* struct btrfs_root_item */ |
84234f3a YZ |
1422 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
1423 | generation, 64); | |
5f39d397 | 1424 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
1425 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1426 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1427 | |
84234f3a YZ |
1428 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
1429 | generation, 64); | |
db94535d CM |
1430 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1431 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1432 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1433 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
1434 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 32); | |
db94535d CM |
1435 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1436 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
1437 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
1438 | last_snapshot, 64); | |
123abc88 | 1439 | |
5f39d397 | 1440 | /* struct btrfs_super_block */ |
db94535d | 1441 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1442 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1443 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1444 | generation, 64); | |
1445 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1446 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1447 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
1448 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
1449 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
1450 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1451 | root_level, 8); | |
0b86a832 CM |
1452 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1453 | chunk_root, 64); | |
1454 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
1455 | chunk_root_level, 8); |
1456 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
1457 | log_root, 64); | |
1458 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, | |
1459 | log_root_level, 8); | |
db94535d CM |
1460 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1461 | total_bytes, 64); | |
1462 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1463 | bytes_used, 64); | |
5f39d397 CM |
1464 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1465 | sectorsize, 32); | |
1466 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1467 | nodesize, 32); | |
1468 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1469 | leafsize, 32); | |
87ee04eb CM |
1470 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1471 | stripesize, 32); | |
5f39d397 CM |
1472 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1473 | root_dir_objectid, 64); | |
8a4b83cc CM |
1474 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1475 | num_devices, 64); | |
2e635a27 | 1476 | |
5f39d397 | 1477 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 1478 | { |
5f39d397 | 1479 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
1480 | } |
1481 | ||
5f39d397 CM |
1482 | /* struct btrfs_file_extent_item */ |
1483 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 1484 | |
5f39d397 | 1485 | static inline unsigned long btrfs_file_extent_inline_start(struct |
236454df CM |
1486 | btrfs_file_extent_item *e) |
1487 | { | |
5f39d397 | 1488 | unsigned long offset = (unsigned long)e; |
db94535d | 1489 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1490 | return offset; |
236454df CM |
1491 | } |
1492 | ||
1493 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
1494 | { | |
db94535d | 1495 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
1496 | } |
1497 | ||
db94535d CM |
1498 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
1499 | disk_bytenr, 64); | |
5f39d397 CM |
1500 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
1501 | generation, 64); | |
db94535d CM |
1502 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
1503 | disk_num_bytes, 64); | |
5f39d397 CM |
1504 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
1505 | offset, 64); | |
db94535d CM |
1506 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
1507 | num_bytes, 64); | |
c8b97818 CM |
1508 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
1509 | ram_bytes, 64); | |
1510 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
1511 | compression, 8); | |
1512 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
1513 | encryption, 8); | |
1514 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
1515 | other_encoding, 16); | |
1516 | ||
1517 | /* this returns the number of file bytes represented by the inline item. | |
1518 | * If an item is compressed, this is the uncompressed size | |
1519 | */ | |
1520 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
1521 | struct btrfs_file_extent_item *e) | |
1522 | { | |
1523 | return btrfs_file_extent_ram_bytes(eb, e); | |
1524 | } | |
1525 | ||
1526 | /* | |
1527 | * this returns the number of bytes used by the item on disk, minus the | |
1528 | * size of any extent headers. If a file is compressed on disk, this is | |
1529 | * the compressed size | |
1530 | */ | |
1531 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
1532 | struct btrfs_item *e) | |
1533 | { | |
1534 | unsigned long offset; | |
1535 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
1536 | return btrfs_item_size(eb, e) - offset; | |
1537 | } | |
9f5fae2f | 1538 | |
e20d96d6 CM |
1539 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1540 | { | |
1541 | return sb->s_fs_info; | |
1542 | } | |
1543 | ||
58176a96 JB |
1544 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
1545 | const char *name, int len) | |
1546 | { | |
1547 | /* if we already have a name just free it */ | |
1548 | if (root->name) | |
1549 | kfree(root->name); | |
1550 | ||
1551 | root->name = kmalloc(len+1, GFP_KERNEL); | |
1552 | if (!root->name) | |
1553 | return -ENOMEM; | |
1554 | ||
1555 | memcpy(root->name, name, len); | |
1556 | root->name[len] ='\0'; | |
1557 | ||
1558 | return 0; | |
1559 | } | |
1560 | ||
db94535d CM |
1561 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) { |
1562 | if (level == 0) | |
1563 | return root->leafsize; | |
1564 | return root->nodesize; | |
1565 | } | |
1566 | ||
4beb1b8b CM |
1567 | /* helper function to cast into the data area of the leaf. */ |
1568 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 1569 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
1570 | btrfs_item_offset_nr(leaf, slot))) |
1571 | ||
1572 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
1573 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
1574 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 1575 | |
2b1f55b0 CM |
1576 | static inline struct dentry *fdentry(struct file *file) |
1577 | { | |
6da6abae | 1578 | return file->f_path.dentry; |
6da6abae CM |
1579 | } |
1580 | ||
b18c6685 | 1581 | /* extent-tree.c */ |
31840ae1 | 1582 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
5b21f2ed ZY |
1583 | int btrfs_lookup_extent_ref(struct btrfs_trans_handle *trans, |
1584 | struct btrfs_root *root, u64 bytenr, | |
1585 | u64 num_bytes, u32 *refs); | |
e02119d5 CM |
1586 | int btrfs_update_pinned_extents(struct btrfs_root *root, |
1587 | u64 bytenr, u64 num, int pin); | |
1588 | int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans, | |
1589 | struct btrfs_root *root, struct extent_buffer *leaf); | |
80ff3856 YZ |
1590 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
1591 | struct btrfs_root *root, u64 bytenr); | |
e9d0b13b CM |
1592 | int btrfs_extent_post_op(struct btrfs_trans_handle *trans, |
1593 | struct btrfs_root *root); | |
d1310b2e | 1594 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); |
5276aeda CM |
1595 | struct btrfs_block_group_cache *btrfs_lookup_block_group(struct |
1596 | btrfs_fs_info *info, | |
db94535d | 1597 | u64 bytenr); |
31f3c99b CM |
1598 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1599 | struct btrfs_block_group_cache | |
be744175 | 1600 | *hint, u64 search_start, |
de428b63 | 1601 | int data, int owner); |
5f39d397 | 1602 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
7bb86316 | 1603 | struct btrfs_root *root, |
31840ae1 | 1604 | u32 blocksize, u64 parent, |
7bb86316 CM |
1605 | u64 root_objectid, |
1606 | u64 ref_generation, | |
7bb86316 CM |
1607 | int level, |
1608 | u64 hint, | |
1609 | u64 empty_size); | |
65b51a00 CM |
1610 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
1611 | struct btrfs_root *root, | |
1612 | u64 bytenr, u32 blocksize); | |
4d775673 | 1613 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
7bb86316 | 1614 | struct btrfs_root *root, |
31840ae1 | 1615 | u64 num_bytes, u64 parent, u64 min_bytes, |
98d20f67 | 1616 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1617 | u64 owner, u64 empty_size, u64 hint_byte, |
ec44a35c | 1618 | u64 search_end, struct btrfs_key *ins, u64 data); |
e6dcd2dc | 1619 | int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1620 | struct btrfs_root *root, u64 parent, |
e6dcd2dc | 1621 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1622 | u64 owner, struct btrfs_key *ins); |
e02119d5 | 1623 | int btrfs_alloc_logged_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1624 | struct btrfs_root *root, u64 parent, |
e02119d5 | 1625 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1626 | u64 owner, struct btrfs_key *ins); |
e6dcd2dc CM |
1627 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
1628 | struct btrfs_root *root, | |
1629 | u64 num_bytes, u64 min_alloc_size, | |
1630 | u64 empty_size, u64 hint_byte, | |
1631 | u64 search_end, struct btrfs_key *ins, | |
1632 | u64 data); | |
e089f05c | 1633 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
31840ae1 ZY |
1634 | struct extent_buffer *orig_buf, struct extent_buffer *buf, |
1635 | u32 *nr_extents); | |
1636 | int btrfs_cache_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
1637 | struct extent_buffer *buf, u32 nr_extents); | |
1638 | int btrfs_update_ref(struct btrfs_trans_handle *trans, | |
1639 | struct btrfs_root *root, struct extent_buffer *orig_buf, | |
1640 | struct extent_buffer *buf, int start_slot, int nr); | |
1641 | int btrfs_free_extent(struct btrfs_trans_handle *trans, | |
1642 | struct btrfs_root *root, | |
1643 | u64 bytenr, u64 num_bytes, u64 parent, | |
7bb86316 | 1644 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1645 | u64 owner_objectid, int pin); |
65b51a00 | 1646 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
ccd467d6 CM |
1647 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
1648 | struct btrfs_root *root, | |
d1310b2e | 1649 | struct extent_io_tree *unpin); |
b18c6685 | 1650 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
1651 | struct btrfs_root *root, |
1652 | u64 bytenr, u64 num_bytes, u64 parent, | |
1653 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1654 | u64 owner_objectid); |
31840ae1 ZY |
1655 | int btrfs_update_extent_ref(struct btrfs_trans_handle *trans, |
1656 | struct btrfs_root *root, u64 bytenr, | |
1657 | u64 orig_parent, u64 parent, | |
1658 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1659 | u64 owner_objectid); |
9078a3e1 CM |
1660 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1661 | struct btrfs_root *root); | |
1662 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1663 | int btrfs_read_block_groups(struct btrfs_root *root); | |
0b86a832 CM |
1664 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
1665 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 1666 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 1667 | u64 size); |
1a40e23b ZY |
1668 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
1669 | struct btrfs_root *root, u64 group_start); | |
1670 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
f82d02d9 YZ |
1671 | int btrfs_free_reloc_root(struct btrfs_trans_handle *trans, |
1672 | struct btrfs_root *root); | |
1a40e23b | 1673 | int btrfs_drop_dead_reloc_roots(struct btrfs_root *root); |
1a40e23b ZY |
1674 | int btrfs_reloc_tree_cache_ref(struct btrfs_trans_handle *trans, |
1675 | struct btrfs_root *root, | |
1676 | struct extent_buffer *buf, u64 orig_start); | |
1677 | int btrfs_add_dead_reloc_root(struct btrfs_root *root); | |
1678 | int btrfs_cleanup_reloc_trees(struct btrfs_root *root); | |
2b82032c | 1679 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
dee26a9f | 1680 | /* ctree.c */ |
0b86a832 CM |
1681 | int btrfs_previous_item(struct btrfs_root *root, |
1682 | struct btrfs_path *path, u64 min_objectid, | |
1683 | int type); | |
1a40e23b ZY |
1684 | int btrfs_merge_path(struct btrfs_trans_handle *trans, |
1685 | struct btrfs_root *root, | |
1686 | struct btrfs_key *node_keys, | |
1687 | u64 *nodes, int lowest_level); | |
31840ae1 ZY |
1688 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
1689 | struct btrfs_root *root, struct btrfs_path *path, | |
1690 | struct btrfs_key *new_key); | |
925baedd CM |
1691 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
1692 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 1693 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
1694 | struct btrfs_key *key, int lowest_level, |
1695 | int cache_only, u64 min_trans); | |
1696 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 1697 | struct btrfs_key *max_key, |
3f157a2f CM |
1698 | struct btrfs_path *path, int cache_only, |
1699 | u64 min_trans); | |
5f39d397 CM |
1700 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
1701 | struct btrfs_root *root, struct extent_buffer *buf, | |
1702 | struct extent_buffer *parent, int parent_slot, | |
65b51a00 | 1703 | struct extent_buffer **cow_ret, u64 prealloc_dest); |
be20aa9d CM |
1704 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
1705 | struct btrfs_root *root, | |
1706 | struct extent_buffer *buf, | |
1707 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
6567e837 CM |
1708 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1709 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1710 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1711 | struct btrfs_root *root, | |
1712 | struct btrfs_path *path, | |
179e29e4 | 1713 | u32 new_size, int from_end); |
e089f05c CM |
1714 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1715 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1716 | ins_len, int cow); | |
6702ed49 | 1717 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 1718 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
1719 | int start_slot, int cache_only, u64 *last_ret, |
1720 | struct btrfs_key *progress); | |
234b63a0 | 1721 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1722 | struct btrfs_path *btrfs_alloc_path(void); |
1723 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1724 | void btrfs_init_path(struct btrfs_path *p); |
85e21bac CM |
1725 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1726 | struct btrfs_path *path, int slot, int nr); | |
323ac95b CM |
1727 | int btrfs_del_leaf(struct btrfs_trans_handle *trans, |
1728 | struct btrfs_root *root, | |
1729 | struct btrfs_path *path, u64 bytenr); | |
85e21bac CM |
1730 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
1731 | struct btrfs_root *root, | |
1732 | struct btrfs_path *path) | |
1733 | { | |
1734 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
1735 | } | |
1736 | ||
e089f05c CM |
1737 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1738 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
f3465ca4 JB |
1739 | int btrfs_insert_some_items(struct btrfs_trans_handle *trans, |
1740 | struct btrfs_root *root, | |
1741 | struct btrfs_path *path, | |
1742 | struct btrfs_key *cpu_key, u32 *data_size, | |
1743 | int nr); | |
9c58309d CM |
1744 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
1745 | struct btrfs_root *root, | |
1746 | struct btrfs_path *path, | |
1747 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
1748 | ||
1749 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
1750 | struct btrfs_root *root, | |
1751 | struct btrfs_path *path, | |
1752 | struct btrfs_key *key, | |
1753 | u32 data_size) | |
1754 | { | |
1755 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
1756 | } | |
1757 | ||
234b63a0 | 1758 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 1759 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 1760 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
e089f05c | 1761 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
9f3a7427 | 1762 | *root); |
f82d02d9 YZ |
1763 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
1764 | struct btrfs_root *root, | |
1765 | struct extent_buffer *node, | |
1766 | struct extent_buffer *parent); | |
dee26a9f | 1767 | /* root-item.c */ |
e089f05c CM |
1768 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1769 | struct btrfs_key *key); | |
1770 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1771 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1772 | *item); | |
1773 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1774 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1775 | *item); | |
1776 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1777 | btrfs_root_item *item, struct btrfs_key *key); | |
bf4ef679 CM |
1778 | int btrfs_search_root(struct btrfs_root *root, u64 search_start, |
1779 | u64 *found_objectid); | |
5ce14bbc CM |
1780 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, |
1781 | struct btrfs_root *latest_root); | |
dee26a9f | 1782 | /* dir-item.c */ |
e089f05c | 1783 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 | 1784 | *root, const char *name, int name_len, u64 dir, |
aec7477b | 1785 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
1786 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1787 | struct btrfs_root *root, | |
1788 | struct btrfs_path *path, u64 dir, | |
1789 | const char *name, int name_len, | |
1790 | int mod); | |
1791 | struct btrfs_dir_item * | |
1792 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1793 | struct btrfs_root *root, | |
1794 | struct btrfs_path *path, u64 dir, | |
1795 | u64 objectid, const char *name, int name_len, | |
1796 | int mod); | |
1797 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1798 | struct btrfs_path *path, | |
7f5c1516 | 1799 | const char *name, int name_len); |
7e38180e CM |
1800 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1801 | struct btrfs_root *root, | |
1802 | struct btrfs_path *path, | |
1803 | struct btrfs_dir_item *di); | |
5103e947 JB |
1804 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
1805 | struct btrfs_root *root, const char *name, | |
1806 | u16 name_len, const void *data, u16 data_len, | |
1807 | u64 dir); | |
1808 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, | |
1809 | struct btrfs_root *root, | |
1810 | struct btrfs_path *path, u64 dir, | |
1811 | const char *name, u16 name_len, | |
1812 | int mod); | |
7b128766 JB |
1813 | |
1814 | /* orphan.c */ | |
1815 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
1816 | struct btrfs_root *root, u64 offset); | |
1817 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
1818 | struct btrfs_root *root, u64 offset); | |
1819 | ||
dee26a9f | 1820 | /* inode-map.c */ |
9f5fae2f CM |
1821 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1822 | struct btrfs_root *fs_root, | |
1823 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1824 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1825 | ||
dee26a9f | 1826 | /* inode-item.c */ |
3954401f CM |
1827 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
1828 | struct btrfs_root *root, | |
1829 | const char *name, int name_len, | |
aec7477b | 1830 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
1831 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
1832 | struct btrfs_root *root, | |
1833 | const char *name, int name_len, | |
aec7477b | 1834 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
1835 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
1836 | struct btrfs_root *root, | |
1837 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 1838 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1839 | *root, struct btrfs_path *path, |
1840 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1841 | |
1842 | /* file-item.c */ | |
61b49440 CM |
1843 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
1844 | struct bio *bio); | |
b18c6685 | 1845 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
1846 | struct btrfs_root *root, |
1847 | u64 objectid, u64 pos, | |
1848 | u64 disk_offset, u64 disk_num_bytes, | |
1849 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
1850 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
1851 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1852 | struct btrfs_root *root, | |
1853 | struct btrfs_path *path, u64 objectid, | |
db94535d | 1854 | u64 bytenr, int mod); |
065631f6 CM |
1855 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
1856 | struct btrfs_root *root, struct inode *inode, | |
e6dcd2dc | 1857 | struct btrfs_ordered_sum *sums); |
3edf7d33 CM |
1858 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
1859 | struct bio *bio); | |
c8b97818 CM |
1860 | int btrfs_csum_file_bytes(struct btrfs_root *root, struct inode *inode, |
1861 | u64 start, unsigned long len); | |
b18c6685 CM |
1862 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1863 | struct btrfs_root *root, | |
1864 | struct btrfs_path *path, | |
1865 | u64 objectid, u64 offset, | |
1866 | int cow); | |
1de037a4 CM |
1867 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1868 | struct btrfs_root *root, struct btrfs_path *path, | |
1869 | u64 isize); | |
39279cc3 | 1870 | /* inode.c */ |
4881ee5a CM |
1871 | |
1872 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 1873 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
1874 | #define ClearPageChecked ClearPageFsMisc |
1875 | #define SetPageChecked SetPageFsMisc | |
1876 | #define PageChecked PageFsMisc | |
1877 | #endif | |
1878 | ||
3de4586c CM |
1879 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
1880 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
1881 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
1882 | struct btrfs_root *root, | |
1883 | struct inode *dir, struct inode *inode, | |
1884 | const char *name, int name_len); | |
1885 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
1886 | struct inode *parent_inode, struct inode *inode, | |
1887 | const char *name, int name_len, int add_backref, u64 index); | |
1888 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, | |
1889 | struct btrfs_root *root, | |
1890 | struct inode *inode, u64 new_size, | |
1891 | u32 min_type); | |
1892 | ||
ea8c2819 CM |
1893 | int btrfs_start_delalloc_inodes(struct btrfs_root *root); |
1894 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end); | |
f421950f CM |
1895 | int btrfs_writepages(struct address_space *mapping, |
1896 | struct writeback_control *wbc); | |
cb8e7090 | 1897 | int btrfs_create_subvol_root(struct btrfs_root *new_root, struct dentry *dentry, |
f46b5a66 CH |
1898 | struct btrfs_trans_handle *trans, u64 new_dirid, |
1899 | struct btrfs_block_group_cache *block_group); | |
1900 | ||
239b14b3 | 1901 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 1902 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 1903 | |
edbd8d4e CM |
1904 | unsigned long btrfs_force_ra(struct address_space *mapping, |
1905 | struct file_ra_state *ra, struct file *file, | |
1906 | pgoff_t offset, pgoff_t last_index); | |
1832a6d5 CM |
1907 | int btrfs_check_free_space(struct btrfs_root *root, u64 num_required, |
1908 | int for_del); | |
9ebefb18 CM |
1909 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page); |
1910 | int btrfs_readpage(struct file *file, struct page *page); | |
39279cc3 | 1911 | void btrfs_delete_inode(struct inode *inode); |
2da98f00 | 1912 | void btrfs_put_inode(struct inode *inode); |
39279cc3 CM |
1913 | void btrfs_read_locked_inode(struct inode *inode); |
1914 | int btrfs_write_inode(struct inode *inode, int wait); | |
1915 | void btrfs_dirty_inode(struct inode *inode); | |
1916 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
1917 | void btrfs_destroy_inode(struct inode *inode); | |
1918 | int btrfs_init_cachep(void); | |
1919 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 1920 | long btrfs_ioctl_trans_end(struct file *file); |
5b21f2ed ZY |
1921 | struct inode *btrfs_ilookup(struct super_block *s, u64 objectid, |
1922 | struct btrfs_root *root, int wait); | |
39279cc3 CM |
1923 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, |
1924 | struct btrfs_root *root); | |
1a54ef8c BR |
1925 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
1926 | struct btrfs_root *root, int *is_new); | |
39279cc3 CM |
1927 | int btrfs_commit_write(struct file *file, struct page *page, |
1928 | unsigned from, unsigned to); | |
a52d9a80 CM |
1929 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
1930 | size_t page_offset, u64 start, u64 end, | |
1931 | int create); | |
1932 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
1933 | struct btrfs_root *root, | |
1934 | struct inode *inode); | |
5b21f2ed ZY |
1935 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
1936 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
1937 | void btrfs_orphan_cleanup(struct btrfs_root *root); | |
9036c102 | 1938 | int btrfs_cont_expand(struct inode *inode, loff_t size); |
f46b5a66 CH |
1939 | |
1940 | /* ioctl.c */ | |
1941 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
1942 | ||
39279cc3 | 1943 | /* file.c */ |
e02119d5 | 1944 | int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync); |
5b21f2ed ZY |
1945 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
1946 | int skip_pinned); | |
5f56406a | 1947 | int btrfs_check_file(struct btrfs_root *root, struct inode *inode); |
39279cc3 CM |
1948 | extern struct file_operations btrfs_file_operations; |
1949 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
1950 | struct btrfs_root *root, struct inode *inode, | |
00f5c795 | 1951 | u64 start, u64 end, u64 inline_limit, u64 *hint_block); |
d899e052 YZ |
1952 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
1953 | struct btrfs_root *root, | |
1954 | struct inode *inode, u64 start, u64 end); | |
6bf13c0c SW |
1955 | int btrfs_release_file(struct inode *inode, struct file *file); |
1956 | ||
6702ed49 CM |
1957 | /* tree-defrag.c */ |
1958 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
1959 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
1960 | |
1961 | /* sysfs.c */ | |
1962 | int btrfs_init_sysfs(void); | |
1963 | void btrfs_exit_sysfs(void); | |
1964 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
1965 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
1966 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
1967 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
1968 | ||
5103e947 JB |
1969 | /* xattr.c */ |
1970 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 1971 | |
edbd8d4e CM |
1972 | /* super.c */ |
1973 | u64 btrfs_parse_size(char *str); | |
edf24abe | 1974 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 1975 | int btrfs_sync_fs(struct super_block *sb, int wait); |
33268eaf JB |
1976 | |
1977 | /* acl.c */ | |
1978 | int btrfs_check_acl(struct inode *inode, int mask); | |
1979 | int btrfs_init_acl(struct inode *inode, struct inode *dir); | |
1980 | int btrfs_acl_chmod(struct inode *inode); | |
0f9dd46c JB |
1981 | |
1982 | /* free-space-cache.c */ | |
1983 | int btrfs_add_free_space(struct btrfs_block_group_cache *block_group, | |
1984 | u64 bytenr, u64 size); | |
25179201 JB |
1985 | int btrfs_add_free_space_lock(struct btrfs_block_group_cache *block_group, |
1986 | u64 offset, u64 bytes); | |
0f9dd46c JB |
1987 | int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group, |
1988 | u64 bytenr, u64 size); | |
25179201 JB |
1989 | int btrfs_remove_free_space_lock(struct btrfs_block_group_cache *block_group, |
1990 | u64 offset, u64 bytes); | |
0f9dd46c JB |
1991 | void btrfs_remove_free_space_cache(struct btrfs_block_group_cache |
1992 | *block_group); | |
1993 | struct btrfs_free_space *btrfs_find_free_space(struct btrfs_block_group_cache | |
1994 | *block_group, u64 offset, | |
1995 | u64 bytes); | |
1996 | void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group, | |
1997 | u64 bytes); | |
1998 | u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group); | |
eb60ceac | 1999 | #endif |