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> |
a2de733c | 26 | #include <linux/rwsem.h> |
58176a96 | 27 | #include <linux/completion.h> |
04160088 | 28 | #include <linux/backing-dev.h> |
e6dcd2dc | 29 | #include <linux/wait.h> |
5a0e3ad6 | 30 | #include <linux/slab.h> |
f8b18087 | 31 | #include <linux/kobject.h> |
1abe9b8a | 32 | #include <trace/events/btrfs.h> |
479965d6 | 33 | #include <asm/kmap_types.h> |
d1310b2e | 34 | #include "extent_io.h" |
5f39d397 | 35 | #include "extent_map.h" |
8b712842 | 36 | #include "async-thread.h" |
a2de733c | 37 | #include "ioctl.h" |
e20d96d6 | 38 | |
e089f05c | 39 | struct btrfs_trans_handle; |
79154b1b | 40 | struct btrfs_transaction; |
a22285a6 | 41 | struct btrfs_pending_snapshot; |
35b7e476 CM |
42 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
43 | extern struct kmem_cache *btrfs_transaction_cachep; | |
44 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 45 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 46 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 47 | struct btrfs_ordered_sum; |
e089f05c | 48 | |
2a7108ad | 49 | #define BTRFS_MAGIC "_BHRfS_M" |
eb60ceac | 50 | |
4008c04a | 51 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 52 | |
5d4f98a2 YZ |
53 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
54 | ||
5a3f23d5 CM |
55 | /* |
56 | * files bigger than this get some pre-flushing when they are added | |
57 | * to the ordered operations list. That way we limit the total | |
58 | * work done by the commit | |
59 | */ | |
60 | #define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024) | |
61 | ||
0b86a832 | 62 | /* holds pointers to all of the tree roots */ |
6407bf6d | 63 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
64 | |
65 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 66 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 67 | |
0b86a832 CM |
68 | /* |
69 | * chunk tree stores translations from logical -> physical block numbering | |
70 | * the super block points to the chunk tree | |
71 | */ | |
e085def2 | 72 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
73 | |
74 | /* | |
75 | * stores information about which areas of a given device are in use. | |
76 | * one per device. The tree of tree roots points to the device tree | |
77 | */ | |
e085def2 CM |
78 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
79 | ||
80 | /* one per subvolume, storing files and directories */ | |
81 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
82 | ||
83 | /* directory objectid inside the root tree */ | |
84 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 85 | |
d20f7043 CM |
86 | /* holds checksums of all the data extents */ |
87 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
88 | ||
7b128766 JB |
89 | /* orhpan objectid for tracking unlinked/truncated files */ |
90 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
91 | ||
e02119d5 CM |
92 | /* does write ahead logging to speed up fsyncs */ |
93 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
94 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
95 | ||
e4657689 ZY |
96 | /* for space balancing */ |
97 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
98 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
99 | ||
d20f7043 CM |
100 | /* |
101 | * extent checksums all have this objectid | |
102 | * this allows them to share the logging tree | |
103 | * for fsyncs | |
104 | */ | |
105 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
106 | ||
0af3d00b JB |
107 | /* For storing free space cache */ |
108 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL | |
109 | ||
82d5902d LZ |
110 | /* |
111 | * The inode number assigned to the special inode for sotring | |
112 | * free ino cache | |
113 | */ | |
114 | #define BTRFS_FREE_INO_OBJECTID -12ULL | |
115 | ||
31840ae1 ZY |
116 | /* dummy objectid represents multiple objectids */ |
117 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
118 | ||
0b86a832 | 119 | /* |
6527cdbe | 120 | * All files have objectids in this range. |
0b86a832 | 121 | */ |
f6dbff55 | 122 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 123 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 124 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 125 | |
0b86a832 CM |
126 | |
127 | /* | |
128 | * the device items go into the chunk tree. The key is in the form | |
129 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
130 | */ | |
131 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
132 | ||
4df27c4d YZ |
133 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
134 | ||
135 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 | |
136 | ||
e20d96d6 CM |
137 | /* |
138 | * we can actually store much bigger names, but lets not confuse the rest | |
139 | * of linux | |
140 | */ | |
141 | #define BTRFS_NAME_LEN 255 | |
142 | ||
f254e52c CM |
143 | /* 32 bytes in various csum fields */ |
144 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
145 | |
146 | /* csum types */ | |
147 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
148 | ||
149 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
150 | ||
509659cd | 151 | /* four bytes for CRC32 */ |
3954401f | 152 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 153 | |
fabb5681 CM |
154 | #define BTRFS_FT_UNKNOWN 0 |
155 | #define BTRFS_FT_REG_FILE 1 | |
156 | #define BTRFS_FT_DIR 2 | |
157 | #define BTRFS_FT_CHRDEV 3 | |
158 | #define BTRFS_FT_BLKDEV 4 | |
159 | #define BTRFS_FT_FIFO 5 | |
160 | #define BTRFS_FT_SOCK 6 | |
161 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
162 | #define BTRFS_FT_XATTR 8 |
163 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 164 | |
fec577fb | 165 | /* |
d4a78947 WF |
166 | * The key defines the order in the tree, and so it also defines (optimal) |
167 | * block layout. | |
168 | * | |
169 | * objectid corresponds to the inode number. | |
170 | * | |
171 | * type tells us things about the object, and is a kind of stream selector. | |
172 | * so for a given inode, keys with type of 1 might refer to the inode data, | |
173 | * type of 2 may point to file data in the btree and type == 3 may point to | |
174 | * extents. | |
fec577fb CM |
175 | * |
176 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
177 | * |
178 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
179 | * in cpu native order. Otherwise they are identical and their sizes | |
180 | * should be the same (ie both packed) | |
fec577fb | 181 | */ |
e2fa7227 CM |
182 | struct btrfs_disk_key { |
183 | __le64 objectid; | |
5f39d397 | 184 | u8 type; |
70b2befd | 185 | __le64 offset; |
e2fa7227 CM |
186 | } __attribute__ ((__packed__)); |
187 | ||
188 | struct btrfs_key { | |
eb60ceac | 189 | u64 objectid; |
5f39d397 | 190 | u8 type; |
70b2befd | 191 | u64 offset; |
eb60ceac CM |
192 | } __attribute__ ((__packed__)); |
193 | ||
0b86a832 CM |
194 | struct btrfs_mapping_tree { |
195 | struct extent_map_tree map_tree; | |
196 | }; | |
197 | ||
0b86a832 CM |
198 | struct btrfs_dev_item { |
199 | /* the internal btrfs device id */ | |
200 | __le64 devid; | |
201 | ||
202 | /* size of the device */ | |
203 | __le64 total_bytes; | |
204 | ||
205 | /* bytes used */ | |
206 | __le64 bytes_used; | |
207 | ||
208 | /* optimal io alignment for this device */ | |
209 | __le32 io_align; | |
210 | ||
211 | /* optimal io width for this device */ | |
212 | __le32 io_width; | |
213 | ||
214 | /* minimal io size for this device */ | |
215 | __le32 sector_size; | |
216 | ||
0b86a832 CM |
217 | /* type and info about this device */ |
218 | __le64 type; | |
219 | ||
2b82032c YZ |
220 | /* expected generation for this device */ |
221 | __le64 generation; | |
222 | ||
c3027eb5 CM |
223 | /* |
224 | * starting byte of this partition on the device, | |
d4a78947 | 225 | * to allow for stripe alignment in the future |
c3027eb5 CM |
226 | */ |
227 | __le64 start_offset; | |
228 | ||
e17cade2 CM |
229 | /* grouping information for allocation decisions */ |
230 | __le32 dev_group; | |
231 | ||
232 | /* seek speed 0-100 where 100 is fastest */ | |
233 | u8 seek_speed; | |
234 | ||
235 | /* bandwidth 0-100 where 100 is fastest */ | |
236 | u8 bandwidth; | |
237 | ||
0d81ba5d | 238 | /* btrfs generated uuid for this device */ |
e17cade2 | 239 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
240 | |
241 | /* uuid of FS who owns this device */ | |
242 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
243 | } __attribute__ ((__packed__)); |
244 | ||
245 | struct btrfs_stripe { | |
246 | __le64 devid; | |
247 | __le64 offset; | |
e17cade2 | 248 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
249 | } __attribute__ ((__packed__)); |
250 | ||
251 | struct btrfs_chunk { | |
e17cade2 CM |
252 | /* size of this chunk in bytes */ |
253 | __le64 length; | |
254 | ||
255 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 256 | __le64 owner; |
e17cade2 | 257 | |
0b86a832 CM |
258 | __le64 stripe_len; |
259 | __le64 type; | |
260 | ||
261 | /* optimal io alignment for this chunk */ | |
262 | __le32 io_align; | |
263 | ||
264 | /* optimal io width for this chunk */ | |
265 | __le32 io_width; | |
266 | ||
267 | /* minimal io size for this chunk */ | |
268 | __le32 sector_size; | |
269 | ||
270 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
271 | * item in the btree | |
272 | */ | |
273 | __le16 num_stripes; | |
321aecc6 CM |
274 | |
275 | /* sub stripes only matter for raid10 */ | |
276 | __le16 sub_stripes; | |
0b86a832 CM |
277 | struct btrfs_stripe stripe; |
278 | /* additional stripes go here */ | |
279 | } __attribute__ ((__packed__)); | |
280 | ||
0af3d00b JB |
281 | #define BTRFS_FREE_SPACE_EXTENT 1 |
282 | #define BTRFS_FREE_SPACE_BITMAP 2 | |
283 | ||
284 | struct btrfs_free_space_entry { | |
285 | __le64 offset; | |
286 | __le64 bytes; | |
287 | u8 type; | |
288 | } __attribute__ ((__packed__)); | |
289 | ||
290 | struct btrfs_free_space_header { | |
291 | struct btrfs_disk_key location; | |
292 | __le64 generation; | |
293 | __le64 num_entries; | |
294 | __le64 num_bitmaps; | |
295 | } __attribute__ ((__packed__)); | |
296 | ||
0b86a832 CM |
297 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
298 | { | |
299 | BUG_ON(num_stripes == 0); | |
300 | return sizeof(struct btrfs_chunk) + | |
301 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
302 | } | |
303 | ||
5d4f98a2 YZ |
304 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
305 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) | |
acce952b | 306 | |
307 | /* | |
308 | * File system states | |
309 | */ | |
310 | ||
311 | /* Errors detected */ | |
312 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) | |
313 | ||
5d4f98a2 YZ |
314 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
315 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) | |
316 | ||
317 | #define BTRFS_BACKREF_REV_MAX 256 | |
318 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
319 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
320 | BTRFS_BACKREF_REV_SHIFT) | |
321 | ||
322 | #define BTRFS_OLD_BACKREF_REV 0 | |
323 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 324 | |
fec577fb CM |
325 | /* |
326 | * every tree block (leaf or node) starts with this header. | |
327 | */ | |
bb492bb0 | 328 | struct btrfs_header { |
e17cade2 | 329 | /* these first four must match the super block */ |
f254e52c | 330 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 331 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 332 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 333 | __le64 flags; |
e17cade2 CM |
334 | |
335 | /* allowed to be different from the super from here on down */ | |
336 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 337 | __le64 generation; |
4d775673 | 338 | __le64 owner; |
5f39d397 | 339 | __le32 nritems; |
9a6f11ed | 340 | u8 level; |
eb60ceac CM |
341 | } __attribute__ ((__packed__)); |
342 | ||
5f39d397 | 343 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
344 | sizeof(struct btrfs_header)) / \ |
345 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 346 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 347 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
348 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
349 | sizeof(struct btrfs_item) - \ | |
350 | sizeof(struct btrfs_file_extent_item)) | |
f34f57a3 YZ |
351 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
352 | sizeof(struct btrfs_item) -\ | |
353 | sizeof(struct btrfs_dir_item)) | |
eb60ceac | 354 | |
0b86a832 CM |
355 | |
356 | /* | |
357 | * this is a very generous portion of the super block, giving us | |
358 | * room to translate 14 chunks with 3 stripes each. | |
359 | */ | |
360 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 361 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 362 | |
fec577fb CM |
363 | /* |
364 | * the super block basically lists the main trees of the FS | |
365 | * it currently lacks any block count etc etc | |
366 | */ | |
234b63a0 | 367 | struct btrfs_super_block { |
f254e52c | 368 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 369 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 370 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 371 | __le64 bytenr; /* this block number */ |
63b10fc4 | 372 | __le64 flags; |
e17cade2 CM |
373 | |
374 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 375 | __le64 magic; |
3768f368 CM |
376 | __le64 generation; |
377 | __le64 root; | |
0b86a832 | 378 | __le64 chunk_root; |
e02119d5 | 379 | __le64 log_root; |
c3027eb5 CM |
380 | |
381 | /* this will help find the new super based on the log root */ | |
382 | __le64 log_root_transid; | |
db94535d CM |
383 | __le64 total_bytes; |
384 | __le64 bytes_used; | |
2e635a27 | 385 | __le64 root_dir_objectid; |
8a4b83cc | 386 | __le64 num_devices; |
5f39d397 CM |
387 | __le32 sectorsize; |
388 | __le32 nodesize; | |
389 | __le32 leafsize; | |
87ee04eb | 390 | __le32 stripesize; |
0b86a832 | 391 | __le32 sys_chunk_array_size; |
84234f3a | 392 | __le64 chunk_root_generation; |
f2b636e8 JB |
393 | __le64 compat_flags; |
394 | __le64 compat_ro_flags; | |
395 | __le64 incompat_flags; | |
607d432d | 396 | __le16 csum_type; |
db94535d | 397 | u8 root_level; |
0b86a832 | 398 | u8 chunk_root_level; |
e02119d5 | 399 | u8 log_root_level; |
0d81ba5d | 400 | struct btrfs_dev_item dev_item; |
c3027eb5 | 401 | |
7ae9c09d | 402 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 403 | |
0af3d00b JB |
404 | __le64 cache_generation; |
405 | ||
c3027eb5 | 406 | /* future expansion */ |
0af3d00b | 407 | __le64 reserved[31]; |
0b86a832 | 408 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
cfaa7295 CM |
409 | } __attribute__ ((__packed__)); |
410 | ||
f2b636e8 JB |
411 | /* |
412 | * Compat flags that we support. If any incompat flags are set other than the | |
413 | * ones specified below then we will fail to mount | |
414 | */ | |
5d4f98a2 | 415 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
0af3d00b | 416 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
67377734 | 417 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
a6fa6fae | 418 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
5d4f98a2 YZ |
419 | |
420 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL | |
421 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL | |
0af3d00b JB |
422 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
423 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 424 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae LZ |
425 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
426 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO) | |
f2b636e8 | 427 | |
fec577fb | 428 | /* |
62e2749e | 429 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
430 | * the item in the leaf (relative to the start of the data area) |
431 | */ | |
0783fcfc | 432 | struct btrfs_item { |
e2fa7227 | 433 | struct btrfs_disk_key key; |
123abc88 | 434 | __le32 offset; |
5f39d397 | 435 | __le32 size; |
eb60ceac CM |
436 | } __attribute__ ((__packed__)); |
437 | ||
fec577fb CM |
438 | /* |
439 | * leaves have an item area and a data area: | |
440 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
441 | * | |
442 | * The data is separate from the items to get the keys closer together | |
443 | * during searches. | |
444 | */ | |
234b63a0 | 445 | struct btrfs_leaf { |
bb492bb0 | 446 | struct btrfs_header header; |
123abc88 | 447 | struct btrfs_item items[]; |
eb60ceac CM |
448 | } __attribute__ ((__packed__)); |
449 | ||
fec577fb CM |
450 | /* |
451 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
452 | * other blocks | |
453 | */ | |
123abc88 CM |
454 | struct btrfs_key_ptr { |
455 | struct btrfs_disk_key key; | |
456 | __le64 blockptr; | |
74493f7a | 457 | __le64 generation; |
123abc88 CM |
458 | } __attribute__ ((__packed__)); |
459 | ||
234b63a0 | 460 | struct btrfs_node { |
bb492bb0 | 461 | struct btrfs_header header; |
123abc88 | 462 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
463 | } __attribute__ ((__packed__)); |
464 | ||
fec577fb | 465 | /* |
234b63a0 CM |
466 | * btrfs_paths remember the path taken from the root down to the leaf. |
467 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
468 | * to any other levels that are present. |
469 | * | |
470 | * The slots array records the index of the item or block pointer | |
471 | * used while walking the tree. | |
472 | */ | |
234b63a0 | 473 | struct btrfs_path { |
5f39d397 | 474 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 475 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
476 | /* if there is real range locking, this locks field will change */ |
477 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 478 | int reada; |
925baedd | 479 | /* keep some upper locks as we walk down */ |
6702ed49 | 480 | int lowest_level; |
459931ec CM |
481 | |
482 | /* | |
483 | * set by btrfs_split_item, tells search_slot to keep all locks | |
484 | * and to force calls to keep space in the nodes | |
485 | */ | |
b9473439 CM |
486 | unsigned int search_for_split:1; |
487 | unsigned int keep_locks:1; | |
488 | unsigned int skip_locking:1; | |
489 | unsigned int leave_spinning:1; | |
5d4f98a2 | 490 | unsigned int search_commit_root:1; |
eb60ceac | 491 | }; |
5de08d7d | 492 | |
62e2749e CM |
493 | /* |
494 | * items in the extent btree are used to record the objectid of the | |
495 | * owner of the block and the number of references | |
496 | */ | |
5d4f98a2 | 497 | |
62e2749e | 498 | struct btrfs_extent_item { |
5d4f98a2 YZ |
499 | __le64 refs; |
500 | __le64 generation; | |
501 | __le64 flags; | |
502 | } __attribute__ ((__packed__)); | |
503 | ||
504 | struct btrfs_extent_item_v0 { | |
62e2749e | 505 | __le32 refs; |
74493f7a CM |
506 | } __attribute__ ((__packed__)); |
507 | ||
5d4f98a2 YZ |
508 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
509 | sizeof(struct btrfs_item)) | |
510 | ||
511 | #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) | |
512 | #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) | |
513 | ||
514 | /* following flags only apply to tree blocks */ | |
515 | ||
516 | /* use full backrefs for extent pointers in the block */ | |
517 | #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) | |
518 | ||
a2de733c AJ |
519 | /* |
520 | * this flag is only used internally by scrub and may be changed at any time | |
521 | * it is only declared here to avoid collisions | |
522 | */ | |
523 | #define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) | |
524 | ||
5d4f98a2 YZ |
525 | struct btrfs_tree_block_info { |
526 | struct btrfs_disk_key key; | |
527 | u8 level; | |
528 | } __attribute__ ((__packed__)); | |
529 | ||
530 | struct btrfs_extent_data_ref { | |
531 | __le64 root; | |
532 | __le64 objectid; | |
533 | __le64 offset; | |
534 | __le32 count; | |
535 | } __attribute__ ((__packed__)); | |
536 | ||
537 | struct btrfs_shared_data_ref { | |
538 | __le32 count; | |
539 | } __attribute__ ((__packed__)); | |
540 | ||
541 | struct btrfs_extent_inline_ref { | |
542 | u8 type; | |
1bec1aed | 543 | __le64 offset; |
5d4f98a2 YZ |
544 | } __attribute__ ((__packed__)); |
545 | ||
546 | /* old style backrefs item */ | |
547 | struct btrfs_extent_ref_v0 { | |
74493f7a CM |
548 | __le64 root; |
549 | __le64 generation; | |
550 | __le64 objectid; | |
5d4f98a2 | 551 | __le32 count; |
62e2749e CM |
552 | } __attribute__ ((__packed__)); |
553 | ||
5d4f98a2 | 554 | |
0b86a832 CM |
555 | /* dev extents record free space on individual devices. The owner |
556 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 557 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
558 | */ |
559 | struct btrfs_dev_extent { | |
e17cade2 CM |
560 | __le64 chunk_tree; |
561 | __le64 chunk_objectid; | |
562 | __le64 chunk_offset; | |
0b86a832 | 563 | __le64 length; |
e17cade2 | 564 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
565 | } __attribute__ ((__packed__)); |
566 | ||
3954401f | 567 | struct btrfs_inode_ref { |
aec7477b | 568 | __le64 index; |
3954401f CM |
569 | __le16 name_len; |
570 | /* name goes here */ | |
571 | } __attribute__ ((__packed__)); | |
572 | ||
0b86a832 | 573 | struct btrfs_timespec { |
f254e52c | 574 | __le64 sec; |
1e1d2701 CM |
575 | __le32 nsec; |
576 | } __attribute__ ((__packed__)); | |
577 | ||
95029d7d | 578 | enum btrfs_compression_type { |
261507a0 LZ |
579 | BTRFS_COMPRESS_NONE = 0, |
580 | BTRFS_COMPRESS_ZLIB = 1, | |
a6fa6fae LZ |
581 | BTRFS_COMPRESS_LZO = 2, |
582 | BTRFS_COMPRESS_TYPES = 2, | |
583 | BTRFS_COMPRESS_LAST = 3, | |
95029d7d | 584 | }; |
c8b97818 | 585 | |
1e1d2701 | 586 | struct btrfs_inode_item { |
e02119d5 | 587 | /* nfs style generation number */ |
1e1d2701 | 588 | __le64 generation; |
e02119d5 CM |
589 | /* transid that last touched this inode */ |
590 | __le64 transid; | |
1e1d2701 | 591 | __le64 size; |
a76a3cd4 | 592 | __le64 nbytes; |
31f3c99b | 593 | __le64 block_group; |
1e1d2701 CM |
594 | __le32 nlink; |
595 | __le32 uid; | |
596 | __le32 gid; | |
597 | __le32 mode; | |
0b86a832 | 598 | __le64 rdev; |
f2b636e8 | 599 | __le64 flags; |
c8b97818 | 600 | |
c3027eb5 CM |
601 | /* modification sequence number for NFS */ |
602 | __le64 sequence; | |
603 | ||
604 | /* | |
605 | * a little future expansion, for more than this we can | |
606 | * just grow the inode item and version it | |
607 | */ | |
608 | __le64 reserved[4]; | |
0b86a832 CM |
609 | struct btrfs_timespec atime; |
610 | struct btrfs_timespec ctime; | |
611 | struct btrfs_timespec mtime; | |
612 | struct btrfs_timespec otime; | |
1e1d2701 CM |
613 | } __attribute__ ((__packed__)); |
614 | ||
e02119d5 CM |
615 | struct btrfs_dir_log_item { |
616 | __le64 end; | |
617 | } __attribute__ ((__packed__)); | |
618 | ||
62e2749e | 619 | struct btrfs_dir_item { |
d6e4a428 | 620 | struct btrfs_disk_key location; |
e02119d5 | 621 | __le64 transid; |
5103e947 | 622 | __le16 data_len; |
a8a2ee0c | 623 | __le16 name_len; |
62e2749e CM |
624 | u8 type; |
625 | } __attribute__ ((__packed__)); | |
626 | ||
b83cc969 LZ |
627 | #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) |
628 | ||
62e2749e | 629 | struct btrfs_root_item { |
d6e4a428 | 630 | struct btrfs_inode_item inode; |
84234f3a | 631 | __le64 generation; |
d6e4a428 | 632 | __le64 root_dirid; |
db94535d CM |
633 | __le64 bytenr; |
634 | __le64 byte_limit; | |
635 | __le64 bytes_used; | |
80ff3856 | 636 | __le64 last_snapshot; |
f2b636e8 | 637 | __le64 flags; |
62e2749e | 638 | __le32 refs; |
5eda7b5e CM |
639 | struct btrfs_disk_key drop_progress; |
640 | u8 drop_level; | |
db94535d | 641 | u8 level; |
9f5fae2f | 642 | } __attribute__ ((__packed__)); |
62e2749e | 643 | |
0660b5af CM |
644 | /* |
645 | * this is used for both forward and backward root refs | |
646 | */ | |
647 | struct btrfs_root_ref { | |
648 | __le64 dirid; | |
649 | __le64 sequence; | |
650 | __le16 name_len; | |
651 | } __attribute__ ((__packed__)); | |
652 | ||
d899e052 YZ |
653 | #define BTRFS_FILE_EXTENT_INLINE 0 |
654 | #define BTRFS_FILE_EXTENT_REG 1 | |
655 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 656 | |
9f5fae2f | 657 | struct btrfs_file_extent_item { |
c8b97818 CM |
658 | /* |
659 | * transaction id that created this extent | |
660 | */ | |
71951f35 | 661 | __le64 generation; |
c8b97818 CM |
662 | /* |
663 | * max number of bytes to hold this extent in ram | |
664 | * when we split a compressed extent we can't know how big | |
665 | * each of the resulting pieces will be. So, this is | |
666 | * an upper limit on the size of the extent in ram instead of | |
667 | * an exact limit. | |
668 | */ | |
669 | __le64 ram_bytes; | |
670 | ||
671 | /* | |
672 | * 32 bits for the various ways we might encode the data, | |
673 | * including compression and encryption. If any of these | |
674 | * are set to something a given disk format doesn't understand | |
675 | * it is treated like an incompat flag for reading and writing, | |
676 | * but not for stat. | |
677 | */ | |
678 | u8 compression; | |
679 | u8 encryption; | |
680 | __le16 other_encoding; /* spare for later use */ | |
681 | ||
682 | /* are we inline data or a real extent? */ | |
236454df | 683 | u8 type; |
c8b97818 | 684 | |
9f5fae2f CM |
685 | /* |
686 | * disk space consumed by the extent, checksum blocks are included | |
687 | * in these numbers | |
688 | */ | |
db94535d CM |
689 | __le64 disk_bytenr; |
690 | __le64 disk_num_bytes; | |
9f5fae2f | 691 | /* |
dee26a9f | 692 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
693 | * this extent record is for. This allows a file extent to point |
694 | * into the middle of an existing extent on disk, sharing it | |
695 | * between two snapshots (useful if some bytes in the middle of the | |
696 | * extent have changed | |
697 | */ | |
698 | __le64 offset; | |
699 | /* | |
c8b97818 CM |
700 | * the logical number of file blocks (no csums included). This |
701 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 702 | */ |
db94535d | 703 | __le64 num_bytes; |
c8b97818 | 704 | |
9f5fae2f CM |
705 | } __attribute__ ((__packed__)); |
706 | ||
f254e52c | 707 | struct btrfs_csum_item { |
509659cd | 708 | u8 csum; |
f254e52c CM |
709 | } __attribute__ ((__packed__)); |
710 | ||
0b86a832 CM |
711 | /* different types of block groups (and chunks) */ |
712 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
713 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
714 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 715 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 716 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 717 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 718 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
b742bb82 | 719 | #define BTRFS_NR_RAID_TYPES 5 |
1e2677e0 | 720 | |
9078a3e1 CM |
721 | struct btrfs_block_group_item { |
722 | __le64 used; | |
0b86a832 CM |
723 | __le64 chunk_objectid; |
724 | __le64 flags; | |
9078a3e1 CM |
725 | } __attribute__ ((__packed__)); |
726 | ||
6324fbf3 CM |
727 | struct btrfs_space_info { |
728 | u64 flags; | |
6a63209f | 729 | |
89a55897 JB |
730 | u64 total_bytes; /* total bytes in the space, |
731 | this doesn't take mirrors into account */ | |
b742bb82 | 732 | u64 bytes_used; /* total bytes used, |
e9c54999 | 733 | this doesn't take mirrors into account */ |
6a63209f JB |
734 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
735 | transaction finishes */ | |
736 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
737 | current allocations */ | |
738 | u64 bytes_readonly; /* total bytes that are read only */ | |
8929ecfa | 739 | |
6a63209f | 740 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 741 | delalloc/allocations */ |
b742bb82 | 742 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
743 | u64 disk_total; /* total bytes on disk, takes mirrors into |
744 | account */ | |
6a63209f | 745 | |
36e39c40 CM |
746 | /* |
747 | * we bump reservation progress every time we decrement | |
748 | * bytes_reserved. This way people waiting for reservations | |
749 | * know something good has happened and they can check | |
750 | * for progress. The number here isn't to be trusted, it | |
751 | * just shows reclaim activity | |
752 | */ | |
753 | unsigned long reservation_progress; | |
754 | ||
4ea02885 | 755 | unsigned int full:1; /* indicates that we cannot allocate any more |
6a63209f | 756 | chunks for this space */ |
4ea02885 | 757 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ |
6d74119f | 758 | |
4ea02885 DS |
759 | unsigned int force_alloc; /* set if we need to force a chunk |
760 | alloc for this space */ | |
6a63209f | 761 | |
6324fbf3 | 762 | struct list_head list; |
0f9dd46c JB |
763 | |
764 | /* for block groups in our same type */ | |
b742bb82 | 765 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
0f9dd46c | 766 | spinlock_t lock; |
80eb234a | 767 | struct rw_semaphore groups_sem; |
817d52f8 | 768 | atomic_t caching_threads; |
0f9dd46c JB |
769 | }; |
770 | ||
f0486c68 YZ |
771 | struct btrfs_block_rsv { |
772 | u64 size; | |
773 | u64 reserved; | |
774 | u64 freed[2]; | |
775 | struct btrfs_space_info *space_info; | |
776 | struct list_head list; | |
777 | spinlock_t lock; | |
778 | atomic_t usage; | |
779 | unsigned int priority:8; | |
780 | unsigned int durable:1; | |
781 | unsigned int refill_used:1; | |
782 | unsigned int full:1; | |
783 | }; | |
784 | ||
fa9c0d79 CM |
785 | /* |
786 | * free clusters are used to claim free space in relatively large chunks, | |
787 | * allowing us to do less seeky writes. They are used for all metadata | |
788 | * allocations and data allocations in ssd mode. | |
789 | */ | |
790 | struct btrfs_free_cluster { | |
791 | spinlock_t lock; | |
792 | spinlock_t refill_lock; | |
793 | struct rb_root root; | |
794 | ||
795 | /* largest extent in this cluster */ | |
796 | u64 max_size; | |
797 | ||
798 | /* first extent starting offset */ | |
799 | u64 window_start; | |
800 | ||
801 | struct btrfs_block_group_cache *block_group; | |
802 | /* | |
803 | * when a cluster is allocated from a block group, we put the | |
804 | * cluster onto a list in the block group so that it can | |
805 | * be freed before the block group is freed. | |
806 | */ | |
807 | struct list_head block_group_list; | |
6324fbf3 CM |
808 | }; |
809 | ||
817d52f8 JB |
810 | enum btrfs_caching_type { |
811 | BTRFS_CACHE_NO = 0, | |
812 | BTRFS_CACHE_STARTED = 1, | |
813 | BTRFS_CACHE_FINISHED = 2, | |
814 | }; | |
815 | ||
0af3d00b JB |
816 | enum btrfs_disk_cache_state { |
817 | BTRFS_DC_WRITTEN = 0, | |
818 | BTRFS_DC_ERROR = 1, | |
819 | BTRFS_DC_CLEAR = 2, | |
820 | BTRFS_DC_SETUP = 3, | |
821 | BTRFS_DC_NEED_WRITE = 4, | |
822 | }; | |
823 | ||
11833d66 YZ |
824 | struct btrfs_caching_control { |
825 | struct list_head list; | |
826 | struct mutex mutex; | |
827 | wait_queue_head_t wait; | |
828 | struct btrfs_block_group_cache *block_group; | |
829 | u64 progress; | |
830 | atomic_t count; | |
831 | }; | |
832 | ||
9078a3e1 CM |
833 | struct btrfs_block_group_cache { |
834 | struct btrfs_key key; | |
835 | struct btrfs_block_group_item item; | |
817d52f8 | 836 | struct btrfs_fs_info *fs_info; |
0af3d00b | 837 | struct inode *inode; |
c286ac48 | 838 | spinlock_t lock; |
324ae4df | 839 | u64 pinned; |
e8569813 | 840 | u64 reserved; |
f0486c68 | 841 | u64 reserved_pinned; |
1b2da372 | 842 | u64 bytes_super; |
0b86a832 | 843 | u64 flags; |
96303081 | 844 | u64 sectorsize; |
0410c94a MK |
845 | unsigned int ro:1; |
846 | unsigned int dirty:1; | |
847 | unsigned int iref:1; | |
0af3d00b JB |
848 | |
849 | int disk_cache_state; | |
0f9dd46c | 850 | |
817d52f8 | 851 | /* cache tracking stuff */ |
817d52f8 | 852 | int cached; |
11833d66 YZ |
853 | struct btrfs_caching_control *caching_ctl; |
854 | u64 last_byte_to_unpin; | |
817d52f8 | 855 | |
0f9dd46c JB |
856 | struct btrfs_space_info *space_info; |
857 | ||
858 | /* free space cache stuff */ | |
34d52cb6 | 859 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
860 | |
861 | /* block group cache stuff */ | |
862 | struct rb_node cache_node; | |
863 | ||
864 | /* for block groups in the same raid type */ | |
865 | struct list_head list; | |
d2fb3437 YZ |
866 | |
867 | /* usage count */ | |
868 | atomic_t count; | |
fa9c0d79 CM |
869 | |
870 | /* List of struct btrfs_free_clusters for this block group. | |
871 | * Today it will only have one thing on it, but that may change | |
872 | */ | |
873 | struct list_head cluster_list; | |
9078a3e1 | 874 | }; |
0b86a832 | 875 | |
5d4f98a2 | 876 | struct reloc_control; |
0b86a832 | 877 | struct btrfs_device; |
8a4b83cc | 878 | struct btrfs_fs_devices; |
16cdcec7 | 879 | struct btrfs_delayed_root; |
9f5fae2f | 880 | struct btrfs_fs_info { |
5f39d397 | 881 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 882 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
883 | struct btrfs_root *extent_root; |
884 | struct btrfs_root *tree_root; | |
0b86a832 CM |
885 | struct btrfs_root *chunk_root; |
886 | struct btrfs_root *dev_root; | |
3de4586c | 887 | struct btrfs_root *fs_root; |
d20f7043 | 888 | struct btrfs_root *csum_root; |
e02119d5 CM |
889 | |
890 | /* the log root tree is a directory of all the other log roots */ | |
891 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
892 | |
893 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 894 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 895 | |
0f9dd46c JB |
896 | /* block group cache stuff */ |
897 | spinlock_t block_group_cache_lock; | |
898 | struct rb_root block_group_cache_tree; | |
899 | ||
11833d66 YZ |
900 | struct extent_io_tree freed_extents[2]; |
901 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 902 | |
0b86a832 CM |
903 | /* logical->physical extent mapping */ |
904 | struct btrfs_mapping_tree mapping_tree; | |
905 | ||
16cdcec7 MX |
906 | /* |
907 | * block reservation for extent, checksum, root tree and | |
908 | * delayed dir index item | |
909 | */ | |
f0486c68 YZ |
910 | struct btrfs_block_rsv global_block_rsv; |
911 | /* block reservation for delay allocation */ | |
912 | struct btrfs_block_rsv delalloc_block_rsv; | |
913 | /* block reservation for metadata operations */ | |
914 | struct btrfs_block_rsv trans_block_rsv; | |
915 | /* block reservation for chunk tree */ | |
916 | struct btrfs_block_rsv chunk_block_rsv; | |
917 | ||
918 | struct btrfs_block_rsv empty_block_rsv; | |
919 | ||
920 | /* list of block reservations that cross multiple transactions */ | |
921 | struct list_head durable_block_rsv_list; | |
922 | ||
923 | struct mutex durable_block_rsv_mutex; | |
924 | ||
293ffd5f | 925 | u64 generation; |
15ee9bc7 | 926 | u64 last_trans_committed; |
12fcfd22 CM |
927 | |
928 | /* | |
929 | * this is updated to the current trans every time a full commit | |
930 | * is required instead of the faster short fsync log commits | |
931 | */ | |
932 | u64 last_trans_log_full_commit; | |
261507a0 LZ |
933 | unsigned long mount_opt:20; |
934 | unsigned long compress_type:4; | |
6f568d35 | 935 | u64 max_inline; |
8f662a76 | 936 | u64 alloc_start; |
79154b1b | 937 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 938 | wait_queue_head_t transaction_throttle; |
f9295749 | 939 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 940 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 941 | wait_queue_head_t async_submit_wait; |
e02119d5 | 942 | |
4b52dff6 | 943 | struct btrfs_super_block super_copy; |
a061fc8d | 944 | struct btrfs_super_block super_for_commit; |
0b86a832 | 945 | struct block_device *__bdev; |
e20d96d6 | 946 | struct super_block *sb; |
d98237b3 | 947 | struct inode *btree_inode; |
04160088 | 948 | struct backing_dev_info bdi; |
e02119d5 | 949 | struct mutex tree_log_mutex; |
a74a4b97 CM |
950 | struct mutex transaction_kthread_mutex; |
951 | struct mutex cleaner_mutex; | |
925baedd | 952 | struct mutex chunk_mutex; |
7d9eb12c | 953 | struct mutex volume_mutex; |
5a3f23d5 CM |
954 | /* |
955 | * this protects the ordered operations list only while we are | |
956 | * processing all of the entries on it. This way we make | |
957 | * sure the commit code doesn't find the list temporarily empty | |
958 | * because another function happens to be doing non-waiting preflush | |
959 | * before jumping into the main commit. | |
960 | */ | |
961 | struct mutex ordered_operations_mutex; | |
11833d66 | 962 | struct rw_semaphore extent_commit_sem; |
5a3f23d5 | 963 | |
c71bf099 | 964 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 965 | |
c71bf099 | 966 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
967 | struct srcu_struct subvol_srcu; |
968 | ||
a4abeea4 | 969 | spinlock_t trans_lock; |
8fd17795 | 970 | struct list_head trans_list; |
19c00ddc | 971 | struct list_head hashers; |
facda1e7 | 972 | struct list_head dead_roots; |
11833d66 | 973 | struct list_head caching_block_groups; |
e02119d5 | 974 | |
24bbcf04 YZ |
975 | spinlock_t delayed_iput_lock; |
976 | struct list_head delayed_iputs; | |
977 | ||
cb03c743 | 978 | atomic_t nr_async_submits; |
8c8bee1d | 979 | atomic_t async_submit_draining; |
0986fe9e | 980 | atomic_t nr_async_bios; |
771ed689 | 981 | atomic_t async_delalloc_pages; |
a4abeea4 | 982 | atomic_t open_ioctl_trans; |
ce9adaa5 | 983 | |
3eaa2885 CM |
984 | /* |
985 | * this is used by the balancing code to wait for all the pending | |
986 | * ordered extents | |
987 | */ | |
988 | spinlock_t ordered_extent_lock; | |
5a3f23d5 CM |
989 | |
990 | /* | |
991 | * all of the data=ordered extents pending writeback | |
992 | * these can span multiple transactions and basically include | |
993 | * every dirty data page that isn't from nodatacow | |
994 | */ | |
3eaa2885 | 995 | struct list_head ordered_extents; |
5a3f23d5 CM |
996 | |
997 | /* | |
998 | * all of the inodes that have delalloc bytes. It is possible for | |
999 | * this list to be empty even when there is still dirty data=ordered | |
1000 | * extents waiting to finish IO. | |
1001 | */ | |
ea8c2819 | 1002 | struct list_head delalloc_inodes; |
3eaa2885 | 1003 | |
5a3f23d5 CM |
1004 | /* |
1005 | * special rename and truncate targets that must be on disk before | |
1006 | * we're allowed to commit. This is basically the ext3 style | |
1007 | * data=ordered list. | |
1008 | */ | |
1009 | struct list_head ordered_operations; | |
1010 | ||
8b712842 CM |
1011 | /* |
1012 | * there is a pool of worker threads for checksumming during writes | |
1013 | * and a pool for checksumming after reads. This is because readers | |
1014 | * can run with FS locks held, and the writers may be waiting for | |
1015 | * those locks. We don't want ordering in the pending list to cause | |
1016 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
1017 | * |
1018 | * A third pool does submit_bio to avoid deadlocking with the other | |
1019 | * two | |
8b712842 | 1020 | */ |
61d92c32 | 1021 | struct btrfs_workers generic_worker; |
8b712842 | 1022 | struct btrfs_workers workers; |
771ed689 | 1023 | struct btrfs_workers delalloc_workers; |
8b712842 | 1024 | struct btrfs_workers endio_workers; |
d20f7043 | 1025 | struct btrfs_workers endio_meta_workers; |
cad321ad | 1026 | struct btrfs_workers endio_meta_write_workers; |
e6dcd2dc | 1027 | struct btrfs_workers endio_write_workers; |
0cb59c99 | 1028 | struct btrfs_workers endio_freespace_worker; |
1cc127b5 | 1029 | struct btrfs_workers submit_workers; |
247e743c CM |
1030 | /* |
1031 | * fixup workers take dirty pages that didn't properly go through | |
1032 | * the cow mechanism and make them safe to write. It happens | |
1033 | * for the sys_munmap function call path | |
1034 | */ | |
1035 | struct btrfs_workers fixup_workers; | |
16cdcec7 | 1036 | struct btrfs_workers delayed_workers; |
a74a4b97 CM |
1037 | struct task_struct *transaction_kthread; |
1038 | struct task_struct *cleaner_kthread; | |
4543df7e | 1039 | int thread_pool_size; |
8b712842 | 1040 | |
58176a96 JB |
1041 | struct kobject super_kobj; |
1042 | struct completion kobj_unregister; | |
e66f709b | 1043 | int do_barriers; |
facda1e7 | 1044 | int closing; |
e02119d5 | 1045 | int log_root_recovering; |
a22285a6 | 1046 | int enospc_unlink; |
a4abeea4 | 1047 | int trans_no_join; |
9f5fae2f | 1048 | |
324ae4df | 1049 | u64 total_pinned; |
b9473439 CM |
1050 | |
1051 | /* protected by the delalloc lock, used to keep from writing | |
1052 | * metadata until there is a nice batch | |
1053 | */ | |
1054 | u64 dirty_metadata_bytes; | |
0b86a832 CM |
1055 | struct list_head dirty_cowonly_roots; |
1056 | ||
8a4b83cc | 1057 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
1058 | |
1059 | /* | |
1060 | * the space_info list is almost entirely read only. It only changes | |
1061 | * when we add a new raid type to the FS, and that happens | |
1062 | * very rarely. RCU is used to protect it. | |
1063 | */ | |
6324fbf3 | 1064 | struct list_head space_info; |
4184ea7f | 1065 | |
5d4f98a2 YZ |
1066 | struct reloc_control *reloc_ctl; |
1067 | ||
1832a6d5 CM |
1068 | spinlock_t delalloc_lock; |
1069 | u64 delalloc_bytes; | |
fa9c0d79 CM |
1070 | |
1071 | /* data_alloc_cluster is only used in ssd mode */ | |
1072 | struct btrfs_free_cluster data_alloc_cluster; | |
1073 | ||
1074 | /* all metadata allocations go through this cluster */ | |
1075 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 1076 | |
4cb5300b CM |
1077 | /* auto defrag inodes go here */ |
1078 | spinlock_t defrag_inodes_lock; | |
1079 | struct rb_root defrag_inodes; | |
1080 | atomic_t defrag_running; | |
1081 | ||
31153d81 YZ |
1082 | spinlock_t ref_cache_lock; |
1083 | u64 total_ref_cache_size; | |
31153d81 | 1084 | |
d18a2c44 CM |
1085 | u64 avail_data_alloc_bits; |
1086 | u64 avail_metadata_alloc_bits; | |
1087 | u64 avail_system_alloc_bits; | |
1088 | u64 data_alloc_profile; | |
1089 | u64 metadata_alloc_profile; | |
1090 | u64 system_alloc_profile; | |
788f20eb | 1091 | |
97e728d4 JB |
1092 | unsigned data_chunk_allocations; |
1093 | unsigned metadata_ratio; | |
1094 | ||
788f20eb | 1095 | void *bdev_holder; |
acce952b | 1096 | |
a2de733c AJ |
1097 | /* private scrub information */ |
1098 | struct mutex scrub_lock; | |
1099 | atomic_t scrubs_running; | |
1100 | atomic_t scrub_pause_req; | |
1101 | atomic_t scrubs_paused; | |
1102 | atomic_t scrub_cancel_req; | |
1103 | wait_queue_head_t scrub_pause_wait; | |
1104 | struct rw_semaphore scrub_super_lock; | |
1105 | int scrub_workers_refcnt; | |
1106 | struct btrfs_workers scrub_workers; | |
1107 | ||
acce952b | 1108 | /* filesystem state */ |
1109 | u64 fs_state; | |
16cdcec7 MX |
1110 | |
1111 | struct btrfs_delayed_root *delayed_root; | |
324ae4df | 1112 | }; |
0b86a832 | 1113 | |
9f5fae2f CM |
1114 | /* |
1115 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1116 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1117 | */ |
1118 | struct btrfs_root { | |
5f39d397 | 1119 | struct extent_buffer *node; |
925baedd | 1120 | |
5f39d397 | 1121 | struct extent_buffer *commit_root; |
e02119d5 | 1122 | struct btrfs_root *log_root; |
1a40e23b | 1123 | struct btrfs_root *reloc_root; |
31153d81 | 1124 | |
62e2749e CM |
1125 | struct btrfs_root_item root_item; |
1126 | struct btrfs_key root_key; | |
9f5fae2f | 1127 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1128 | struct extent_io_tree dirty_log_pages; |
1129 | ||
58176a96 JB |
1130 | struct kobject root_kobj; |
1131 | struct completion kobj_unregister; | |
a2135011 | 1132 | struct mutex objectid_mutex; |
7237f183 | 1133 | |
f0486c68 YZ |
1134 | spinlock_t accounting_lock; |
1135 | struct btrfs_block_rsv *block_rsv; | |
1136 | ||
581bb050 LZ |
1137 | /* free ino cache stuff */ |
1138 | struct mutex fs_commit_mutex; | |
1139 | struct btrfs_free_space_ctl *free_ino_ctl; | |
1140 | enum btrfs_caching_type cached; | |
1141 | spinlock_t cache_lock; | |
1142 | wait_queue_head_t cache_wait; | |
1143 | struct btrfs_free_space_ctl *free_ino_pinned; | |
1144 | u64 cache_progress; | |
82d5902d | 1145 | struct inode *cache_inode; |
581bb050 | 1146 | |
e02119d5 | 1147 | struct mutex log_mutex; |
7237f183 YZ |
1148 | wait_queue_head_t log_writer_wait; |
1149 | wait_queue_head_t log_commit_wait[2]; | |
1150 | atomic_t log_writers; | |
1151 | atomic_t log_commit[2]; | |
1152 | unsigned long log_transid; | |
257c62e1 | 1153 | unsigned long last_log_commit; |
7237f183 | 1154 | unsigned long log_batch; |
ff782e0a JB |
1155 | pid_t log_start_pid; |
1156 | bool log_multiple_pids; | |
ea8c2819 | 1157 | |
0f7d52f4 CM |
1158 | u64 objectid; |
1159 | u64 last_trans; | |
5f39d397 CM |
1160 | |
1161 | /* data allocations are done in sectorsize units */ | |
1162 | u32 sectorsize; | |
1163 | ||
1164 | /* node allocations are done in nodesize units */ | |
1165 | u32 nodesize; | |
1166 | ||
1167 | /* leaf allocations are done in leafsize units */ | |
1168 | u32 leafsize; | |
1169 | ||
87ee04eb CM |
1170 | u32 stripesize; |
1171 | ||
9f5fae2f | 1172 | u32 type; |
13a8a7c8 YZ |
1173 | |
1174 | u64 highest_objectid; | |
9f3a7427 | 1175 | int ref_cows; |
0b86a832 | 1176 | int track_dirty; |
4df27c4d YZ |
1177 | int in_radix; |
1178 | ||
3f157a2f | 1179 | u64 defrag_trans_start; |
6702ed49 | 1180 | struct btrfs_key defrag_progress; |
0ef3e66b | 1181 | struct btrfs_key defrag_max; |
6702ed49 | 1182 | int defrag_running; |
58176a96 | 1183 | char *name; |
4313b399 | 1184 | int in_sysfs; |
0b86a832 CM |
1185 | |
1186 | /* the dirty list is only used by non-reference counted roots */ | |
1187 | struct list_head dirty_list; | |
7b128766 | 1188 | |
5d4f98a2 YZ |
1189 | struct list_head root_list; |
1190 | ||
d68fc57b | 1191 | spinlock_t orphan_lock; |
7b128766 | 1192 | struct list_head orphan_list; |
d68fc57b YZ |
1193 | struct btrfs_block_rsv *orphan_block_rsv; |
1194 | int orphan_item_inserted; | |
1195 | int orphan_cleanup_state; | |
3394e160 | 1196 | |
5d4f98a2 YZ |
1197 | spinlock_t inode_lock; |
1198 | /* red-black tree that keeps track of in-memory inodes */ | |
1199 | struct rb_root inode_tree; | |
1200 | ||
16cdcec7 MX |
1201 | /* |
1202 | * radix tree that keeps track of delayed nodes of every inode, | |
1203 | * protected by inode_lock | |
1204 | */ | |
1205 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1206 | /* |
1207 | * right now this just gets used so that a root has its own devid | |
1208 | * for stat. It may be used for more later | |
1209 | */ | |
1210 | struct super_block anon_super; | |
62e2749e CM |
1211 | }; |
1212 | ||
4cb5300b CM |
1213 | struct btrfs_ioctl_defrag_range_args { |
1214 | /* start of the defrag operation */ | |
1215 | __u64 start; | |
1216 | ||
1217 | /* number of bytes to defrag, use (u64)-1 to say all */ | |
1218 | __u64 len; | |
1219 | ||
1220 | /* | |
1221 | * flags for the operation, which can include turning | |
1222 | * on compression for this one defrag | |
1223 | */ | |
1224 | __u64 flags; | |
1225 | ||
1226 | /* | |
1227 | * any extent bigger than this will be considered | |
1228 | * already defragged. Use 0 to take the kernel default | |
1229 | * Use 1 to say every single extent must be rewritten | |
1230 | */ | |
1231 | __u32 extent_thresh; | |
1232 | ||
1233 | /* | |
1234 | * which compression method to use if turning on compression | |
1235 | * for this defrag operation. If unspecified, zlib will | |
1236 | * be used | |
1237 | */ | |
1238 | __u32 compress_type; | |
1239 | ||
1240 | /* spare for later */ | |
1241 | __u32 unused[4]; | |
1242 | }; | |
1243 | ||
1244 | ||
1e1d2701 CM |
1245 | /* |
1246 | * inode items have the data typically returned from stat and store other | |
1247 | * info about object characteristics. There is one for every file and dir in | |
1248 | * the FS | |
1249 | */ | |
9078a3e1 | 1250 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af CM |
1251 | #define BTRFS_INODE_REF_KEY 12 |
1252 | #define BTRFS_XATTR_ITEM_KEY 24 | |
1253 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 1254 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
1255 | |
1256 | /* | |
1257 | * dir items are the name -> inode pointers in a directory. There is one | |
1258 | * for every name in a directory. | |
1259 | */ | |
0660b5af CM |
1260 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
1261 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
1262 | #define BTRFS_DIR_ITEM_KEY 84 | |
1263 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 1264 | /* |
9078a3e1 | 1265 | * extent data is for file data |
1e1d2701 | 1266 | */ |
0660b5af | 1267 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 1268 | |
f254e52c | 1269 | /* |
d20f7043 CM |
1270 | * extent csums are stored in a separate tree and hold csums for |
1271 | * an entire extent on disk. | |
f254e52c | 1272 | */ |
d20f7043 | 1273 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 1274 | |
1e1d2701 | 1275 | /* |
d4a78947 | 1276 | * root items point to tree roots. They are typically in the root |
1e1d2701 CM |
1277 | * tree used by the super block to find all the other trees |
1278 | */ | |
0660b5af CM |
1279 | #define BTRFS_ROOT_ITEM_KEY 132 |
1280 | ||
1281 | /* | |
1282 | * root backrefs tie subvols and snapshots to the directory entries that | |
1283 | * reference them | |
1284 | */ | |
1285 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
1286 | ||
1287 | /* | |
1288 | * root refs make a fast index for listing all of the snapshots and | |
1289 | * subvolumes referenced by a given root. They point directly to the | |
1290 | * directory item in the root that references the subvol | |
1291 | */ | |
1292 | #define BTRFS_ROOT_REF_KEY 156 | |
1293 | ||
1e1d2701 CM |
1294 | /* |
1295 | * extent items are in the extent map tree. These record which blocks | |
1296 | * are used, and how many references there are to each block | |
1297 | */ | |
0660b5af | 1298 | #define BTRFS_EXTENT_ITEM_KEY 168 |
5d4f98a2 YZ |
1299 | |
1300 | #define BTRFS_TREE_BLOCK_REF_KEY 176 | |
1301 | ||
1302 | #define BTRFS_EXTENT_DATA_REF_KEY 178 | |
1303 | ||
1304 | #define BTRFS_EXTENT_REF_V0_KEY 180 | |
1305 | ||
1306 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 | |
1307 | ||
1308 | #define BTRFS_SHARED_DATA_REF_KEY 184 | |
9078a3e1 CM |
1309 | |
1310 | /* | |
1311 | * block groups give us hints into the extent allocation trees. Which | |
1312 | * blocks are free etc etc | |
1313 | */ | |
0660b5af | 1314 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 1315 | |
0660b5af CM |
1316 | #define BTRFS_DEV_EXTENT_KEY 204 |
1317 | #define BTRFS_DEV_ITEM_KEY 216 | |
1318 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 1319 | |
1e1d2701 CM |
1320 | /* |
1321 | * string items are for debugging. They just store a short string of | |
1322 | * data in the FS | |
1323 | */ | |
9078a3e1 CM |
1324 | #define BTRFS_STRING_ITEM_KEY 253 |
1325 | ||
21ad10cf CM |
1326 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1327 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1328 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1329 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1330 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1331 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1332 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1333 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1334 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1335 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1336 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1337 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1338 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1339 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1340 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1341 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1342 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
b6cda9bc CM |
1343 | |
1344 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
1345 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
1346 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
1347 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
1348 | /* |
1349 | * Inode flags | |
1350 | */ | |
fdebe2bd Y |
1351 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1352 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1353 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1354 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1355 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1356 | #define BTRFS_INODE_SYNC (1 << 5) |
1357 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1358 | #define BTRFS_INODE_APPEND (1 << 7) | |
1359 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1360 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1361 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1362 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1363 | |
08fe4db1 LZ |
1364 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1365 | ||
5f39d397 CM |
1366 | /* some macros to generate set/get funcs for the struct fields. This |
1367 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
1368 | * one for u8: | |
1369 | */ | |
1370 | #define le8_to_cpu(v) (v) | |
1371 | #define cpu_to_le8(v) (v) | |
1372 | #define __le8 u8 | |
1373 | ||
1374 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
1375 | read_extent_buffer(eb, (char *)(result), \ | |
1376 | ((unsigned long)(ptr)) + \ | |
1377 | offsetof(type, member), \ | |
1378 | sizeof(((type *)0)->member))) | |
1379 | ||
1380 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1381 | write_extent_buffer(eb, (char *)(result), \ | |
1382 | ((unsigned long)(ptr)) + \ | |
1383 | offsetof(type, member), \ | |
1384 | sizeof(((type *)0)->member))) | |
1385 | ||
0f82731f | 1386 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 1387 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
1388 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
1389 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
1390 | #endif | |
5f39d397 CM |
1391 | |
1392 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1393 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1394 | { \ | |
df68b8a7 DM |
1395 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1396 | u##bits res = le##bits##_to_cpu(p->member); \ | |
1397 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 1398 | return res; \ |
5f39d397 CM |
1399 | } \ |
1400 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1401 | u##bits val) \ | |
1402 | { \ | |
df68b8a7 DM |
1403 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1404 | p->member = cpu_to_le##bits(val); \ | |
1405 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 1406 | } |
9078a3e1 | 1407 | |
5f39d397 CM |
1408 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1409 | static inline u##bits btrfs_##name(type *s) \ | |
1410 | { \ | |
1411 | return le##bits##_to_cpu(s->member); \ | |
1412 | } \ | |
1413 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1414 | { \ | |
1415 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1416 | } |
1417 | ||
0b86a832 CM |
1418 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1419 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1420 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1421 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1422 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1423 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1424 | start_offset, 64); | |
0b86a832 CM |
1425 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1426 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1427 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1428 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1429 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1430 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1431 | |
8a4b83cc CM |
1432 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1433 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1434 | total_bytes, 64); | |
1435 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1436 | bytes_used, 64); | |
1437 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1438 | io_align, 32); | |
1439 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1440 | io_width, 32); | |
1441 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1442 | sector_size, 32); | |
1443 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1444 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1445 | dev_group, 32); | |
1446 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1447 | seek_speed, 8); | |
1448 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1449 | bandwidth, 8); | |
2b82032c YZ |
1450 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1451 | generation, 64); | |
8a4b83cc | 1452 | |
0b86a832 CM |
1453 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
1454 | { | |
1455 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
1456 | } | |
1457 | ||
2b82032c YZ |
1458 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
1459 | { | |
1460 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
1461 | } | |
1462 | ||
e17cade2 | 1463 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1464 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1465 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1466 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1467 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1468 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1469 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1470 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1471 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1472 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1473 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1474 | ||
e17cade2 CM |
1475 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1476 | { | |
1477 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1478 | } | |
1479 | ||
1480 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1481 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1482 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1483 | stripe_len, 64); | |
1484 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1485 | io_align, 32); | |
1486 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1487 | io_width, 32); | |
1488 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1489 | sector_size, 32); | |
1490 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1491 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1492 | num_stripes, 16); | |
321aecc6 CM |
1493 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1494 | sub_stripes, 16); | |
0b86a832 CM |
1495 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1496 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1497 | ||
1498 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1499 | int nr) | |
1500 | { | |
1501 | unsigned long offset = (unsigned long)c; | |
1502 | offset += offsetof(struct btrfs_chunk, stripe); | |
1503 | offset += nr * sizeof(struct btrfs_stripe); | |
1504 | return (struct btrfs_stripe *)offset; | |
1505 | } | |
1506 | ||
a443755f CM |
1507 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1508 | { | |
1509 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1510 | } | |
1511 | ||
0b86a832 CM |
1512 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1513 | struct btrfs_chunk *c, int nr) | |
1514 | { | |
1515 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1516 | } | |
1517 | ||
0b86a832 CM |
1518 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1519 | struct btrfs_chunk *c, int nr) | |
1520 | { | |
1521 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1522 | } | |
1523 | ||
5f39d397 CM |
1524 | /* struct btrfs_block_group_item */ |
1525 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1526 | used, 64); | |
1527 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1528 | used, 64); | |
0b86a832 CM |
1529 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1530 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1531 | |
1532 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1533 | struct btrfs_block_group_item, chunk_objectid, 64); |
1534 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1535 | struct btrfs_block_group_item, flags, 64); | |
1536 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1537 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1538 | |
3954401f CM |
1539 | /* struct btrfs_inode_ref */ |
1540 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1541 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1542 | |
5f39d397 CM |
1543 | /* struct btrfs_inode_item */ |
1544 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1545 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1546 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1547 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1548 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1549 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1550 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1551 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1552 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1553 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1554 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1555 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
1e1d2701 | 1556 | |
0b86a832 | 1557 | static inline struct btrfs_timespec * |
5f39d397 | 1558 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1559 | { |
5f39d397 CM |
1560 | unsigned long ptr = (unsigned long)inode_item; |
1561 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1562 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1563 | } |
1564 | ||
0b86a832 | 1565 | static inline struct btrfs_timespec * |
5f39d397 | 1566 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1567 | { |
5f39d397 CM |
1568 | unsigned long ptr = (unsigned long)inode_item; |
1569 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1570 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1571 | } |
1572 | ||
0b86a832 | 1573 | static inline struct btrfs_timespec * |
5f39d397 | 1574 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1575 | { |
5f39d397 CM |
1576 | unsigned long ptr = (unsigned long)inode_item; |
1577 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1578 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1579 | } |
1580 | ||
0b86a832 CM |
1581 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1582 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1583 | |
0b86a832 | 1584 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1585 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1586 | chunk_tree, 64); | |
1587 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1588 | chunk_objectid, 64); | |
1589 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1590 | chunk_offset, 64); | |
0b86a832 CM |
1591 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1592 | ||
e17cade2 CM |
1593 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1594 | { | |
1595 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1596 | return (u8 *)((unsigned long)dev + ptr); | |
1597 | } | |
1598 | ||
5d4f98a2 YZ |
1599 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1600 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1601 | generation, 64); | |
1602 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1603 | |
5d4f98a2 YZ |
1604 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1605 | ||
1606 | ||
1607 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1608 | ||
1609 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1610 | struct btrfs_tree_block_info *item, | |
1611 | struct btrfs_disk_key *key) | |
1612 | { | |
1613 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1614 | } | |
1615 | ||
1616 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1617 | struct btrfs_tree_block_info *item, | |
1618 | struct btrfs_disk_key *key) | |
1619 | { | |
1620 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1621 | } | |
e20d96d6 | 1622 | |
5d4f98a2 YZ |
1623 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1624 | root, 64); | |
1625 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1626 | objectid, 64); | |
1627 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1628 | offset, 64); | |
1629 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1630 | count, 32); | |
1631 | ||
1632 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1633 | count, 32); | |
1634 | ||
1635 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1636 | type, 8); | |
1637 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1638 | offset, 64); | |
1639 | ||
1640 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1641 | { | |
1642 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1643 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1644 | return sizeof(struct btrfs_extent_inline_ref); | |
1645 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1646 | return sizeof(struct btrfs_shared_data_ref) + | |
1647 | sizeof(struct btrfs_extent_inline_ref); | |
1648 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1649 | return sizeof(struct btrfs_extent_data_ref) + | |
1650 | offsetof(struct btrfs_extent_inline_ref, offset); | |
1651 | BUG(); | |
1652 | return 0; | |
1653 | } | |
1654 | ||
1655 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1656 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1657 | generation, 64); | |
1658 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1659 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1660 | |
5f39d397 CM |
1661 | /* struct btrfs_node */ |
1662 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1663 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1664 | |
5f39d397 | 1665 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1666 | { |
5f39d397 CM |
1667 | unsigned long ptr; |
1668 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1669 | sizeof(struct btrfs_key_ptr) * nr; | |
1670 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1671 | } |
1672 | ||
5f39d397 CM |
1673 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1674 | int nr, u64 val) | |
cf27e1ee | 1675 | { |
5f39d397 CM |
1676 | unsigned long ptr; |
1677 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1678 | sizeof(struct btrfs_key_ptr) * nr; | |
1679 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1680 | } |
1681 | ||
74493f7a CM |
1682 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1683 | { | |
1684 | unsigned long ptr; | |
1685 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1686 | sizeof(struct btrfs_key_ptr) * nr; | |
1687 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1688 | } | |
1689 | ||
1690 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1691 | int nr, u64 val) | |
1692 | { | |
1693 | unsigned long ptr; | |
1694 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1695 | sizeof(struct btrfs_key_ptr) * nr; | |
1696 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1697 | } | |
1698 | ||
810191ff | 1699 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1700 | { |
5f39d397 CM |
1701 | return offsetof(struct btrfs_node, ptrs) + |
1702 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1703 | } |
1704 | ||
e644d021 CM |
1705 | void btrfs_node_key(struct extent_buffer *eb, |
1706 | struct btrfs_disk_key *disk_key, int nr); | |
1707 | ||
5f39d397 CM |
1708 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1709 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1710 | { |
5f39d397 CM |
1711 | unsigned long ptr; |
1712 | ptr = btrfs_node_key_ptr_offset(nr); | |
1713 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1714 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1715 | } |
1716 | ||
5f39d397 CM |
1717 | /* struct btrfs_item */ |
1718 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1719 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1720 | |
5f39d397 | 1721 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1722 | { |
5f39d397 CM |
1723 | return offsetof(struct btrfs_leaf, items) + |
1724 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1725 | } |
1726 | ||
5f39d397 CM |
1727 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1728 | int nr) | |
0783fcfc | 1729 | { |
5f39d397 | 1730 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1731 | } |
1732 | ||
5f39d397 CM |
1733 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1734 | struct btrfs_item *item) | |
0783fcfc | 1735 | { |
5f39d397 | 1736 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1737 | } |
1738 | ||
5f39d397 | 1739 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1740 | { |
5f39d397 | 1741 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1742 | } |
1743 | ||
5f39d397 | 1744 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1745 | { |
5f39d397 | 1746 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1747 | } |
1748 | ||
5f39d397 | 1749 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1750 | { |
5f39d397 | 1751 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1752 | } |
1753 | ||
5f39d397 CM |
1754 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1755 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1756 | { |
5f39d397 CM |
1757 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1758 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1759 | } |
1760 | ||
5f39d397 CM |
1761 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1762 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1763 | { |
5f39d397 CM |
1764 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1765 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1766 | } |
1767 | ||
e02119d5 CM |
1768 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1769 | ||
0660b5af CM |
1770 | /* |
1771 | * struct btrfs_root_ref | |
1772 | */ | |
1773 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1774 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1775 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1776 | ||
5f39d397 | 1777 | /* struct btrfs_dir_item */ |
5103e947 | 1778 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1779 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1780 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1781 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1782 | |
5f39d397 CM |
1783 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1784 | struct btrfs_dir_item *item, | |
1785 | struct btrfs_disk_key *key) | |
1d4f6404 | 1786 | { |
5f39d397 | 1787 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1788 | } |
1789 | ||
5f39d397 CM |
1790 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1791 | struct btrfs_dir_item *item, | |
1792 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1793 | { |
5f39d397 | 1794 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1795 | } |
1796 | ||
0af3d00b JB |
1797 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1798 | num_entries, 64); | |
1799 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1800 | num_bitmaps, 64); | |
1801 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1802 | generation, 64); | |
1803 | ||
1804 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
1805 | struct btrfs_free_space_header *h, | |
1806 | struct btrfs_disk_key *key) | |
1807 | { | |
1808 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1809 | } | |
1810 | ||
1811 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
1812 | struct btrfs_free_space_header *h, | |
1813 | struct btrfs_disk_key *key) | |
1814 | { | |
1815 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1816 | } | |
1817 | ||
5f39d397 CM |
1818 | /* struct btrfs_disk_key */ |
1819 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1820 | objectid, 64); | |
1821 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1822 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1823 | |
e2fa7227 CM |
1824 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1825 | struct btrfs_disk_key *disk) | |
1826 | { | |
1827 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1828 | cpu->type = disk->type; |
e2fa7227 CM |
1829 | cpu->objectid = le64_to_cpu(disk->objectid); |
1830 | } | |
1831 | ||
1832 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1833 | struct btrfs_key *cpu) | |
1834 | { | |
1835 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1836 | disk->type = cpu->type; |
e2fa7227 CM |
1837 | disk->objectid = cpu_to_le64(cpu->objectid); |
1838 | } | |
1839 | ||
5f39d397 CM |
1840 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1841 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1842 | { |
5f39d397 CM |
1843 | struct btrfs_disk_key disk_key; |
1844 | btrfs_node_key(eb, &disk_key, nr); | |
1845 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1846 | } |
1847 | ||
5f39d397 CM |
1848 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1849 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1850 | { |
5f39d397 CM |
1851 | struct btrfs_disk_key disk_key; |
1852 | btrfs_item_key(eb, &disk_key, nr); | |
1853 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1854 | } |
1855 | ||
5f39d397 CM |
1856 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1857 | struct btrfs_dir_item *item, | |
1858 | struct btrfs_key *key) | |
4d775673 | 1859 | { |
5f39d397 CM |
1860 | struct btrfs_disk_key disk_key; |
1861 | btrfs_dir_item_key(eb, item, &disk_key); | |
1862 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1863 | } |
1864 | ||
58176a96 | 1865 | |
5f39d397 | 1866 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1867 | { |
5f39d397 | 1868 | return key->type; |
3768f368 CM |
1869 | } |
1870 | ||
5f39d397 | 1871 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1872 | { |
5f39d397 | 1873 | key->type = val; |
3768f368 CM |
1874 | } |
1875 | ||
5f39d397 | 1876 | /* struct btrfs_header */ |
db94535d | 1877 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1878 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1879 | generation, 64); | |
1880 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1881 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1882 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1883 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1884 | |
63b10fc4 CM |
1885 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1886 | { | |
1887 | return (btrfs_header_flags(eb) & flag) == flag; | |
1888 | } | |
1889 | ||
1890 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1891 | { | |
1892 | u64 flags = btrfs_header_flags(eb); | |
1893 | btrfs_set_header_flags(eb, flags | flag); | |
1894 | return (flags & flag) == flag; | |
1895 | } | |
1896 | ||
1897 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1898 | { | |
1899 | u64 flags = btrfs_header_flags(eb); | |
1900 | btrfs_set_header_flags(eb, flags & ~flag); | |
1901 | return (flags & flag) == flag; | |
1902 | } | |
1903 | ||
5d4f98a2 YZ |
1904 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
1905 | { | |
1906 | u64 flags = btrfs_header_flags(eb); | |
1907 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
1908 | } | |
1909 | ||
1910 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
1911 | int rev) | |
1912 | { | |
1913 | u64 flags = btrfs_header_flags(eb); | |
1914 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
1915 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
1916 | btrfs_set_header_flags(eb, flags); | |
1917 | } | |
1918 | ||
5f39d397 | 1919 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1920 | { |
5f39d397 CM |
1921 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1922 | return (u8 *)ptr; | |
0f7d52f4 CM |
1923 | } |
1924 | ||
e17cade2 CM |
1925 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1926 | { | |
1927 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1928 | return (u8 *)ptr; | |
1929 | } | |
1930 | ||
5f39d397 | 1931 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1932 | { |
d397712b | 1933 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
1934 | } |
1935 | ||
5f39d397 | 1936 | /* struct btrfs_root_item */ |
84234f3a YZ |
1937 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
1938 | generation, 64); | |
5f39d397 | 1939 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
1940 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1941 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1942 | |
84234f3a YZ |
1943 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
1944 | generation, 64); | |
db94535d CM |
1945 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1946 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1947 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1948 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 1949 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
1950 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1951 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
1952 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
1953 | last_snapshot, 64); | |
123abc88 | 1954 | |
b83cc969 LZ |
1955 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
1956 | { | |
1957 | return root->root_item.flags & BTRFS_ROOT_SUBVOL_RDONLY; | |
1958 | } | |
1959 | ||
5f39d397 | 1960 | /* struct btrfs_super_block */ |
607d432d | 1961 | |
db94535d | 1962 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1963 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1964 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1965 | generation, 64); | |
1966 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1967 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1968 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
1969 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
1970 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
1971 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1972 | root_level, 8); | |
0b86a832 CM |
1973 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1974 | chunk_root, 64); | |
1975 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
1976 | chunk_root_level, 8); |
1977 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
1978 | log_root, 64); | |
c3027eb5 CM |
1979 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
1980 | log_root_transid, 64); | |
e02119d5 CM |
1981 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
1982 | log_root_level, 8); | |
db94535d CM |
1983 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1984 | total_bytes, 64); | |
1985 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1986 | bytes_used, 64); | |
5f39d397 CM |
1987 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1988 | sectorsize, 32); | |
1989 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1990 | nodesize, 32); | |
1991 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1992 | leafsize, 32); | |
87ee04eb CM |
1993 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1994 | stripesize, 32); | |
5f39d397 CM |
1995 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1996 | root_dir_objectid, 64); | |
8a4b83cc CM |
1997 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1998 | num_devices, 64); | |
f2b636e8 JB |
1999 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2000 | compat_flags, 64); | |
2001 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2002 | compat_ro_flags, 64); |
f2b636e8 JB |
2003 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2004 | incompat_flags, 64); | |
607d432d JB |
2005 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2006 | csum_type, 16); | |
0af3d00b JB |
2007 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2008 | cache_generation, 64); | |
607d432d JB |
2009 | |
2010 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2011 | { | |
2012 | int t = btrfs_super_csum_type(s); | |
2013 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); | |
2014 | return btrfs_csum_sizes[t]; | |
2015 | } | |
2e635a27 | 2016 | |
5f39d397 | 2017 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2018 | { |
5f39d397 | 2019 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2020 | } |
2021 | ||
5f39d397 CM |
2022 | /* struct btrfs_file_extent_item */ |
2023 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 2024 | |
d397712b CM |
2025 | static inline unsigned long |
2026 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2027 | { |
5f39d397 | 2028 | unsigned long offset = (unsigned long)e; |
db94535d | 2029 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 2030 | return offset; |
236454df CM |
2031 | } |
2032 | ||
2033 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2034 | { | |
db94535d | 2035 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
2036 | } |
2037 | ||
db94535d CM |
2038 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2039 | disk_bytenr, 64); | |
5f39d397 CM |
2040 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2041 | generation, 64); | |
db94535d CM |
2042 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2043 | disk_num_bytes, 64); | |
5f39d397 CM |
2044 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2045 | offset, 64); | |
db94535d CM |
2046 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2047 | num_bytes, 64); | |
c8b97818 CM |
2048 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2049 | ram_bytes, 64); | |
2050 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2051 | compression, 8); | |
2052 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2053 | encryption, 8); | |
2054 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2055 | other_encoding, 16); | |
2056 | ||
2057 | /* this returns the number of file bytes represented by the inline item. | |
2058 | * If an item is compressed, this is the uncompressed size | |
2059 | */ | |
2060 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2061 | struct btrfs_file_extent_item *e) | |
2062 | { | |
2063 | return btrfs_file_extent_ram_bytes(eb, e); | |
2064 | } | |
2065 | ||
2066 | /* | |
2067 | * this returns the number of bytes used by the item on disk, minus the | |
2068 | * size of any extent headers. If a file is compressed on disk, this is | |
2069 | * the compressed size | |
2070 | */ | |
2071 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2072 | struct btrfs_item *e) | |
2073 | { | |
2074 | unsigned long offset; | |
2075 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
2076 | return btrfs_item_size(eb, e) - offset; | |
2077 | } | |
9f5fae2f | 2078 | |
e20d96d6 CM |
2079 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
2080 | { | |
2081 | return sb->s_fs_info; | |
2082 | } | |
2083 | ||
d397712b CM |
2084 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
2085 | { | |
db94535d CM |
2086 | if (level == 0) |
2087 | return root->leafsize; | |
2088 | return root->nodesize; | |
2089 | } | |
2090 | ||
4beb1b8b CM |
2091 | /* helper function to cast into the data area of the leaf. */ |
2092 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 2093 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
2094 | btrfs_item_offset_nr(leaf, slot))) |
2095 | ||
2096 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
2097 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
2098 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 2099 | |
2b1f55b0 CM |
2100 | static inline struct dentry *fdentry(struct file *file) |
2101 | { | |
6da6abae | 2102 | return file->f_path.dentry; |
6da6abae CM |
2103 | } |
2104 | ||
67377734 JB |
2105 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2106 | { | |
2107 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2108 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2109 | } | |
2110 | ||
b18c6685 | 2111 | /* extent-tree.c */ |
16cdcec7 MX |
2112 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
2113 | int num_items) | |
2114 | { | |
2115 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
2116 | 3 * num_items; | |
2117 | } | |
2118 | ||
fa9c0d79 | 2119 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
2120 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
2121 | struct btrfs_root *root, unsigned long count); | |
31840ae1 | 2122 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
2123 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2124 | struct btrfs_root *root, u64 bytenr, | |
2125 | u64 num_bytes, u64 *refs, u64 *flags); | |
11833d66 YZ |
2126 | int btrfs_pin_extent(struct btrfs_root *root, |
2127 | u64 bytenr, u64 num, int reserved); | |
80ff3856 | 2128 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2129 | struct btrfs_root *root, |
2130 | u64 objectid, u64 offset, u64 bytenr); | |
d397712b CM |
2131 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2132 | struct btrfs_fs_info *info, | |
2133 | u64 bytenr); | |
5d4f98a2 | 2134 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
d2fb3437 YZ |
2135 | u64 btrfs_find_block_group(struct btrfs_root *root, |
2136 | u64 search_start, u64 search_hint, int owner); | |
5f39d397 | 2137 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2138 | struct btrfs_root *root, u32 blocksize, |
2139 | u64 parent, u64 root_objectid, | |
2140 | struct btrfs_disk_key *key, int level, | |
2141 | u64 hint, u64 empty_size); | |
f0486c68 YZ |
2142 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2143 | struct btrfs_root *root, | |
2144 | struct extent_buffer *buf, | |
2145 | u64 parent, int last_ref); | |
65b51a00 CM |
2146 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
2147 | struct btrfs_root *root, | |
4008c04a CM |
2148 | u64 bytenr, u32 blocksize, |
2149 | int level); | |
5d4f98a2 YZ |
2150 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
2151 | struct btrfs_root *root, | |
2152 | u64 root_objectid, u64 owner, | |
2153 | u64 offset, struct btrfs_key *ins); | |
2154 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, | |
2155 | struct btrfs_root *root, | |
2156 | u64 root_objectid, u64 owner, u64 offset, | |
2157 | struct btrfs_key *ins); | |
e6dcd2dc CM |
2158 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
2159 | struct btrfs_root *root, | |
2160 | u64 num_bytes, u64 min_alloc_size, | |
2161 | u64 empty_size, u64 hint_byte, | |
2162 | u64 search_end, struct btrfs_key *ins, | |
2163 | u64 data); | |
e089f05c | 2164 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
5d4f98a2 YZ |
2165 | struct extent_buffer *buf, int full_backref); |
2166 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
2167 | struct extent_buffer *buf, int full_backref); | |
2168 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, | |
2169 | struct btrfs_root *root, | |
2170 | u64 bytenr, u64 num_bytes, u64 flags, | |
2171 | int is_data); | |
31840ae1 ZY |
2172 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
2173 | struct btrfs_root *root, | |
2174 | u64 bytenr, u64 num_bytes, u64 parent, | |
5d4f98a2 YZ |
2175 | u64 root_objectid, u64 owner, u64 offset); |
2176 | ||
65b51a00 | 2177 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
b4d00d56 LD |
2178 | int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache, |
2179 | u64 num_bytes, int reserve, int sinfo); | |
11833d66 YZ |
2180 | int btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
2181 | struct btrfs_root *root); | |
ccd467d6 | 2182 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 2183 | struct btrfs_root *root); |
b18c6685 | 2184 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
2185 | struct btrfs_root *root, |
2186 | u64 bytenr, u64 num_bytes, u64 parent, | |
5d4f98a2 YZ |
2187 | u64 root_objectid, u64 owner, u64 offset); |
2188 | ||
9078a3e1 CM |
2189 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2190 | struct btrfs_root *root); | |
d2fb3437 | 2191 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
2192 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
2193 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 2194 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
2195 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
2196 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 2197 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 2198 | u64 size); |
1a40e23b ZY |
2199 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
2200 | struct btrfs_root *root, u64 group_start); | |
2b82032c | 2201 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
6d07bcec | 2202 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
6a63209f | 2203 | void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde); |
4184ea7f | 2204 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
0ca1f7ce YZ |
2205 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes); |
2206 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); | |
a22285a6 YZ |
2207 | int btrfs_trans_reserve_metadata(struct btrfs_trans_handle *trans, |
2208 | struct btrfs_root *root, | |
8bb8ab2e | 2209 | int num_items); |
a22285a6 YZ |
2210 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
2211 | struct btrfs_root *root); | |
d68fc57b YZ |
2212 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
2213 | struct inode *inode); | |
2214 | void btrfs_orphan_release_metadata(struct inode *inode); | |
a22285a6 YZ |
2215 | int btrfs_snap_reserve_metadata(struct btrfs_trans_handle *trans, |
2216 | struct btrfs_pending_snapshot *pending); | |
0ca1f7ce YZ |
2217 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
2218 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
2219 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); | |
2220 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); | |
f0486c68 YZ |
2221 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv); |
2222 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root); | |
2223 | void btrfs_free_block_rsv(struct btrfs_root *root, | |
2224 | struct btrfs_block_rsv *rsv); | |
2225 | void btrfs_add_durable_block_rsv(struct btrfs_fs_info *fs_info, | |
2226 | struct btrfs_block_rsv *rsv); | |
2227 | int btrfs_block_rsv_add(struct btrfs_trans_handle *trans, | |
2228 | struct btrfs_root *root, | |
2229 | struct btrfs_block_rsv *block_rsv, | |
8bb8ab2e | 2230 | u64 num_bytes); |
f0486c68 YZ |
2231 | int btrfs_block_rsv_check(struct btrfs_trans_handle *trans, |
2232 | struct btrfs_root *root, | |
2233 | struct btrfs_block_rsv *block_rsv, | |
2234 | u64 min_reserved, int min_factor); | |
2235 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, | |
2236 | struct btrfs_block_rsv *dst_rsv, | |
2237 | u64 num_bytes); | |
2238 | void btrfs_block_rsv_release(struct btrfs_root *root, | |
2239 | struct btrfs_block_rsv *block_rsv, | |
2240 | u64 num_bytes); | |
fcb80c2a JB |
2241 | int btrfs_truncate_reserve_metadata(struct btrfs_trans_handle *trans, |
2242 | struct btrfs_root *root, | |
2243 | struct btrfs_block_rsv *rsv); | |
f0486c68 YZ |
2244 | int btrfs_set_block_group_ro(struct btrfs_root *root, |
2245 | struct btrfs_block_group_cache *cache); | |
2246 | int btrfs_set_block_group_rw(struct btrfs_root *root, | |
2247 | struct btrfs_block_group_cache *cache); | |
0af3d00b | 2248 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2249 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 2250 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
2251 | u64 start, u64 end); | |
2252 | int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, | |
5378e607 | 2253 | u64 num_bytes, u64 *actual_bytes); |
c87f08ca CM |
2254 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
2255 | struct btrfs_root *root, u64 type); | |
f7039b1d | 2256 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 2257 | |
c59021f8 | 2258 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
dee26a9f | 2259 | /* ctree.c */ |
5d4f98a2 YZ |
2260 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
2261 | int level, int *slot); | |
2262 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
2263 | int btrfs_previous_item(struct btrfs_root *root, |
2264 | struct btrfs_path *path, u64 min_objectid, | |
2265 | int type); | |
31840ae1 ZY |
2266 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
2267 | struct btrfs_root *root, struct btrfs_path *path, | |
2268 | struct btrfs_key *new_key); | |
925baedd CM |
2269 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2270 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 2271 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
2272 | struct btrfs_key *key, int lowest_level, |
2273 | int cache_only, u64 min_trans); | |
2274 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 2275 | struct btrfs_key *max_key, |
3f157a2f CM |
2276 | struct btrfs_path *path, int cache_only, |
2277 | u64 min_trans); | |
5f39d397 CM |
2278 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2279 | struct btrfs_root *root, struct extent_buffer *buf, | |
2280 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2281 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2282 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2283 | struct btrfs_root *root, | |
2284 | struct extent_buffer *buf, | |
2285 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2286 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2287 | struct extent_buffer *buf); | |
6567e837 CM |
2288 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2289 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
2290 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
2291 | struct btrfs_root *root, | |
2292 | struct btrfs_path *path, | |
179e29e4 | 2293 | u32 new_size, int from_end); |
459931ec CM |
2294 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2295 | struct btrfs_root *root, | |
2296 | struct btrfs_path *path, | |
2297 | struct btrfs_key *new_key, | |
2298 | unsigned long split_offset); | |
ad48fd75 YZ |
2299 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2300 | struct btrfs_root *root, | |
2301 | struct btrfs_path *path, | |
2302 | struct btrfs_key *new_key); | |
e089f05c CM |
2303 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
2304 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
2305 | ins_len, int cow); | |
6702ed49 | 2306 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2307 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
2308 | int start_slot, int cache_only, u64 *last_ret, |
2309 | struct btrfs_key *progress); | |
b3b4aa74 | 2310 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2311 | struct btrfs_path *btrfs_alloc_path(void); |
2312 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2313 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 MX |
2314 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
2315 | struct extent_buffer *held); | |
b4ce94de CM |
2316 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2317 | ||
85e21bac CM |
2318 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2319 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2320 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2321 | struct btrfs_root *root, | |
2322 | struct btrfs_path *path) | |
2323 | { | |
2324 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2325 | } | |
2326 | ||
16cdcec7 MX |
2327 | int setup_items_for_insert(struct btrfs_trans_handle *trans, |
2328 | struct btrfs_root *root, struct btrfs_path *path, | |
2329 | struct btrfs_key *cpu_key, u32 *data_size, | |
2330 | u32 total_data, u32 total_size, int nr); | |
e089f05c CM |
2331 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2332 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2333 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2334 | struct btrfs_root *root, | |
2335 | struct btrfs_path *path, | |
2336 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
2337 | ||
2338 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2339 | struct btrfs_root *root, | |
2340 | struct btrfs_path *path, | |
2341 | struct btrfs_key *key, | |
2342 | u32 data_size) | |
2343 | { | |
2344 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2345 | } | |
2346 | ||
234b63a0 | 2347 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 2348 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 2349 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
3fd0a558 YZ |
2350 | int btrfs_drop_snapshot(struct btrfs_root *root, |
2351 | struct btrfs_block_rsv *block_rsv, int update_ref); | |
f82d02d9 YZ |
2352 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2353 | struct btrfs_root *root, | |
2354 | struct extent_buffer *node, | |
2355 | struct extent_buffer *parent); | |
dee26a9f | 2356 | /* root-item.c */ |
ea9e8b11 | 2357 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
4df27c4d YZ |
2358 | struct btrfs_path *path, |
2359 | u64 root_id, u64 ref_id); | |
0660b5af CM |
2360 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
2361 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
2362 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
2363 | const char *name, int name_len); | |
2364 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
2365 | struct btrfs_root *tree_root, | |
2366 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 2367 | const char *name, int name_len); |
e089f05c CM |
2368 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2369 | struct btrfs_key *key); | |
2370 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2371 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2372 | *item); | |
2373 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2374 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2375 | *item); | |
2376 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
2377 | btrfs_root_item *item, struct btrfs_key *key); | |
5d4f98a2 | 2378 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid); |
76dda93c | 2379 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
5d4f98a2 YZ |
2380 | int btrfs_set_root_node(struct btrfs_root_item *item, |
2381 | struct extent_buffer *node); | |
08fe4db1 LZ |
2382 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
2383 | ||
dee26a9f | 2384 | /* dir-item.c */ |
d397712b CM |
2385 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
2386 | struct btrfs_root *root, const char *name, | |
16cdcec7 | 2387 | int name_len, struct inode *dir, |
aec7477b | 2388 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
2389 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
2390 | struct btrfs_root *root, | |
2391 | struct btrfs_path *path, u64 dir, | |
2392 | const char *name, int name_len, | |
2393 | int mod); | |
2394 | struct btrfs_dir_item * | |
2395 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
2396 | struct btrfs_root *root, | |
2397 | struct btrfs_path *path, u64 dir, | |
2398 | u64 objectid, const char *name, int name_len, | |
2399 | int mod); | |
4df27c4d YZ |
2400 | struct btrfs_dir_item * |
2401 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
2402 | struct btrfs_path *path, u64 dirid, | |
2403 | const char *name, int name_len); | |
7e38180e CM |
2404 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
2405 | struct btrfs_path *path, | |
7f5c1516 | 2406 | const char *name, int name_len); |
7e38180e CM |
2407 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
2408 | struct btrfs_root *root, | |
2409 | struct btrfs_path *path, | |
2410 | struct btrfs_dir_item *di); | |
5103e947 | 2411 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
2412 | struct btrfs_root *root, |
2413 | struct btrfs_path *path, u64 objectid, | |
2414 | const char *name, u16 name_len, | |
2415 | const void *data, u16 data_len); | |
5103e947 JB |
2416 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
2417 | struct btrfs_root *root, | |
2418 | struct btrfs_path *path, u64 dir, | |
2419 | const char *name, u16 name_len, | |
2420 | int mod); | |
22a94d44 JB |
2421 | int verify_dir_item(struct btrfs_root *root, |
2422 | struct extent_buffer *leaf, | |
2423 | struct btrfs_dir_item *dir_item); | |
7b128766 JB |
2424 | |
2425 | /* orphan.c */ | |
2426 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
2427 | struct btrfs_root *root, u64 offset); | |
2428 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
2429 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 2430 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 2431 | |
dee26a9f | 2432 | /* inode-item.c */ |
3954401f CM |
2433 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
2434 | struct btrfs_root *root, | |
2435 | const char *name, int name_len, | |
aec7477b | 2436 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
2437 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
2438 | struct btrfs_root *root, | |
2439 | const char *name, int name_len, | |
aec7477b | 2440 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
a22285a6 YZ |
2441 | struct btrfs_inode_ref * |
2442 | btrfs_lookup_inode_ref(struct btrfs_trans_handle *trans, | |
2443 | struct btrfs_root *root, | |
2444 | struct btrfs_path *path, | |
2445 | const char *name, int name_len, | |
2446 | u64 inode_objectid, u64 ref_objectid, int mod); | |
5f39d397 CM |
2447 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
2448 | struct btrfs_root *root, | |
2449 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 2450 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
2451 | *root, struct btrfs_path *path, |
2452 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
2453 | |
2454 | /* file-item.c */ | |
459931ec CM |
2455 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
2456 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 2457 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2458 | struct bio *bio, u32 *dst); |
4b46fce2 JB |
2459 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
2460 | struct bio *bio, u64 logical_offset, u32 *dst); | |
b18c6685 | 2461 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
2462 | struct btrfs_root *root, |
2463 | u64 objectid, u64 pos, | |
2464 | u64 disk_offset, u64 disk_num_bytes, | |
2465 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
2466 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
2467 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
2468 | struct btrfs_root *root, | |
2469 | struct btrfs_path *path, u64 objectid, | |
db94535d | 2470 | u64 bytenr, int mod); |
065631f6 | 2471 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 2472 | struct btrfs_root *root, |
e6dcd2dc | 2473 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 2474 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2475 | struct bio *bio, u64 file_start, int contig); |
b18c6685 CM |
2476 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
2477 | struct btrfs_root *root, | |
2478 | struct btrfs_path *path, | |
d20f7043 | 2479 | u64 bytenr, int cow); |
1de037a4 CM |
2480 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
2481 | struct btrfs_root *root, struct btrfs_path *path, | |
2482 | u64 isize); | |
a2de733c AJ |
2483 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
2484 | struct list_head *list, int search_commit); | |
39279cc3 | 2485 | /* inode.c */ |
4881ee5a CM |
2486 | |
2487 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 2488 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
2489 | #define ClearPageChecked ClearPageFsMisc |
2490 | #define SetPageChecked SetPageFsMisc | |
2491 | #define PageChecked PageFsMisc | |
2492 | #endif | |
2493 | ||
3de4586c CM |
2494 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
2495 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
2496 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
2497 | struct btrfs_root *root, | |
2498 | struct inode *dir, struct inode *inode, | |
2499 | const char *name, int name_len); | |
2500 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
2501 | struct inode *parent_inode, struct inode *inode, | |
2502 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
2503 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
2504 | struct btrfs_root *root, | |
2505 | struct inode *dir, u64 objectid, | |
2506 | const char *name, int name_len); | |
e02119d5 CM |
2507 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
2508 | struct btrfs_root *root, | |
2509 | struct inode *inode, u64 new_size, | |
2510 | u32 min_type); | |
2511 | ||
24bbcf04 | 2512 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
2ac55d41 JB |
2513 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
2514 | struct extent_state **cached_state); | |
f421950f CM |
2515 | int btrfs_writepages(struct address_space *mapping, |
2516 | struct writeback_control *wbc); | |
d2fb3437 | 2517 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
d82a6f1d | 2518 | struct btrfs_root *new_root, u64 new_dirid); |
239b14b3 | 2519 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 2520 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 2521 | |
edbd8d4e CM |
2522 | unsigned long btrfs_force_ra(struct address_space *mapping, |
2523 | struct file_ra_state *ra, struct file *file, | |
2524 | pgoff_t offset, pgoff_t last_index); | |
c2ec175c | 2525 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 2526 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 2527 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 2528 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
2529 | void btrfs_dirty_inode(struct inode *inode); |
2530 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
2531 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 2532 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
2533 | int btrfs_init_cachep(void); |
2534 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 2535 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 2536 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 2537 | struct btrfs_root *root, int *was_new); |
a52d9a80 | 2538 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
306e16ce | 2539 | size_t pg_offset, u64 start, u64 end, |
a52d9a80 CM |
2540 | int create); |
2541 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
2542 | struct btrfs_root *root, | |
2543 | struct inode *inode); | |
5b21f2ed ZY |
2544 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
2545 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
66b4ffd1 | 2546 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
2547 | void btrfs_orphan_pre_snapshot(struct btrfs_trans_handle *trans, |
2548 | struct btrfs_pending_snapshot *pending, | |
2549 | u64 *bytes_to_reserve); | |
2550 | void btrfs_orphan_post_snapshot(struct btrfs_trans_handle *trans, | |
2551 | struct btrfs_pending_snapshot *pending); | |
2552 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, | |
2553 | struct btrfs_root *root); | |
a41ad394 | 2554 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
76dda93c | 2555 | int btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
2556 | void btrfs_add_delayed_iput(struct inode *inode); |
2557 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
2558 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
2559 | u64 start, u64 num_bytes, u64 min_size, | |
2560 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
2561 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
2562 | struct btrfs_trans_handle *trans, int mode, | |
2563 | u64 start, u64 num_bytes, u64 min_size, | |
2564 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 2565 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
2566 | |
2567 | /* ioctl.c */ | |
2568 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
6cbff00f CH |
2569 | void btrfs_update_iflags(struct inode *inode); |
2570 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
4cb5300b CM |
2571 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
2572 | struct btrfs_ioctl_defrag_range_args *range, | |
2573 | u64 newer_than, unsigned long max_pages); | |
39279cc3 | 2574 | /* file.c */ |
4cb5300b CM |
2575 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
2576 | struct inode *inode); | |
2577 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); | |
7ea80859 | 2578 | int btrfs_sync_file(struct file *file, int datasync); |
5b21f2ed ZY |
2579 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
2580 | int skip_pinned); | |
828c0950 | 2581 | extern const struct file_operations btrfs_file_operations; |
920bbbfb YZ |
2582 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode, |
2583 | u64 start, u64 end, u64 *hint_byte, int drop_cache); | |
d899e052 | 2584 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 2585 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 2586 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
2587 | void btrfs_drop_pages(struct page **pages, size_t num_pages); |
2588 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, | |
2589 | struct page **pages, size_t num_pages, | |
2590 | loff_t pos, size_t write_bytes, | |
2591 | struct extent_state **cached); | |
6bf13c0c | 2592 | |
6702ed49 CM |
2593 | /* tree-defrag.c */ |
2594 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
2595 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
2596 | |
2597 | /* sysfs.c */ | |
2598 | int btrfs_init_sysfs(void); | |
2599 | void btrfs_exit_sysfs(void); | |
58176a96 | 2600 | |
5103e947 JB |
2601 | /* xattr.c */ |
2602 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 2603 | |
edbd8d4e | 2604 | /* super.c */ |
edf24abe | 2605 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 2606 | int btrfs_sync_fs(struct super_block *sb, int wait); |
acce952b | 2607 | void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, |
2608 | unsigned int line, int errno); | |
2609 | ||
2610 | #define btrfs_std_error(fs_info, errno) \ | |
2611 | do { \ | |
2612 | if ((errno)) \ | |
2613 | __btrfs_std_error((fs_info), __func__, __LINE__, (errno));\ | |
2614 | } while (0) | |
33268eaf JB |
2615 | |
2616 | /* acl.c */ | |
0eda294d | 2617 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
b74c79e9 | 2618 | int btrfs_check_acl(struct inode *inode, int mask, unsigned int flags); |
7df336ec AV |
2619 | #else |
2620 | #define btrfs_check_acl NULL | |
2621 | #endif | |
f34f57a3 YZ |
2622 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
2623 | struct inode *inode, struct inode *dir); | |
33268eaf | 2624 | int btrfs_acl_chmod(struct inode *inode); |
0f9dd46c | 2625 | |
5d4f98a2 YZ |
2626 | /* relocation.c */ |
2627 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
2628 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
2629 | struct btrfs_root *root); | |
2630 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
2631 | struct btrfs_root *root); | |
2632 | int btrfs_recover_relocation(struct btrfs_root *root); | |
2633 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
3fd0a558 YZ |
2634 | void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
2635 | struct btrfs_root *root, struct extent_buffer *buf, | |
2636 | struct extent_buffer *cow); | |
2637 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, | |
2638 | struct btrfs_pending_snapshot *pending, | |
2639 | u64 *bytes_to_reserve); | |
2640 | void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, | |
2641 | struct btrfs_pending_snapshot *pending); | |
a2de733c AJ |
2642 | |
2643 | /* scrub.c */ | |
2644 | int btrfs_scrub_dev(struct btrfs_root *root, u64 devid, u64 start, u64 end, | |
8628764e | 2645 | struct btrfs_scrub_progress *progress, int readonly); |
a2de733c AJ |
2646 | int btrfs_scrub_pause(struct btrfs_root *root); |
2647 | int btrfs_scrub_pause_super(struct btrfs_root *root); | |
2648 | int btrfs_scrub_continue(struct btrfs_root *root); | |
2649 | int btrfs_scrub_continue_super(struct btrfs_root *root); | |
2650 | int btrfs_scrub_cancel(struct btrfs_root *root); | |
2651 | int btrfs_scrub_cancel_dev(struct btrfs_root *root, struct btrfs_device *dev); | |
2652 | int btrfs_scrub_cancel_devid(struct btrfs_root *root, u64 devid); | |
2653 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, | |
2654 | struct btrfs_scrub_progress *progress); | |
2655 | ||
eb60ceac | 2656 | #endif |