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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
dc17ff8f CM |
19 | #ifndef __BTRFS_CTREE__ |
20 | #define __BTRFS_CTREE__ | |
eb60ceac | 21 | |
6da6abae | 22 | #include <linux/version.h> |
810191ff CM |
23 | #include <linux/mm.h> |
24 | #include <linux/highmem.h> | |
e20d96d6 | 25 | #include <linux/fs.h> |
58176a96 | 26 | #include <linux/completion.h> |
04160088 | 27 | #include <linux/backing-dev.h> |
e6dcd2dc | 28 | #include <linux/wait.h> |
5a0e3ad6 | 29 | #include <linux/slab.h> |
f8b18087 | 30 | #include <linux/kobject.h> |
479965d6 | 31 | #include <asm/kmap_types.h> |
d1310b2e | 32 | #include "extent_io.h" |
5f39d397 | 33 | #include "extent_map.h" |
8b712842 | 34 | #include "async-thread.h" |
e20d96d6 | 35 | |
e089f05c | 36 | struct btrfs_trans_handle; |
79154b1b | 37 | struct btrfs_transaction; |
a22285a6 | 38 | struct btrfs_pending_snapshot; |
35b7e476 CM |
39 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
40 | extern struct kmem_cache *btrfs_transaction_cachep; | |
41 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 42 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 43 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 44 | struct btrfs_ordered_sum; |
e089f05c | 45 | |
2a7108ad | 46 | #define BTRFS_MAGIC "_BHRfS_M" |
eb60ceac | 47 | |
4008c04a | 48 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 49 | |
5d4f98a2 YZ |
50 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
51 | ||
5a3f23d5 CM |
52 | /* |
53 | * files bigger than this get some pre-flushing when they are added | |
54 | * to the ordered operations list. That way we limit the total | |
55 | * work done by the commit | |
56 | */ | |
57 | #define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024) | |
58 | ||
0b86a832 | 59 | /* holds pointers to all of the tree roots */ |
6407bf6d | 60 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
61 | |
62 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 63 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 64 | |
0b86a832 CM |
65 | /* |
66 | * chunk tree stores translations from logical -> physical block numbering | |
67 | * the super block points to the chunk tree | |
68 | */ | |
e085def2 | 69 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
70 | |
71 | /* | |
72 | * stores information about which areas of a given device are in use. | |
73 | * one per device. The tree of tree roots points to the device tree | |
74 | */ | |
e085def2 CM |
75 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
76 | ||
77 | /* one per subvolume, storing files and directories */ | |
78 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
79 | ||
80 | /* directory objectid inside the root tree */ | |
81 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 82 | |
d20f7043 CM |
83 | /* holds checksums of all the data extents */ |
84 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
85 | ||
7b128766 JB |
86 | /* orhpan objectid for tracking unlinked/truncated files */ |
87 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
88 | ||
e02119d5 CM |
89 | /* does write ahead logging to speed up fsyncs */ |
90 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
91 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
92 | ||
e4657689 ZY |
93 | /* for space balancing */ |
94 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
95 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
96 | ||
d20f7043 CM |
97 | /* |
98 | * extent checksums all have this objectid | |
99 | * this allows them to share the logging tree | |
100 | * for fsyncs | |
101 | */ | |
102 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
103 | ||
0af3d00b JB |
104 | /* For storing free space cache */ |
105 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL | |
106 | ||
31840ae1 ZY |
107 | /* dummy objectid represents multiple objectids */ |
108 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
109 | ||
0b86a832 | 110 | /* |
6527cdbe | 111 | * All files have objectids in this range. |
0b86a832 | 112 | */ |
f6dbff55 | 113 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 114 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 115 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 116 | |
0b86a832 CM |
117 | |
118 | /* | |
119 | * the device items go into the chunk tree. The key is in the form | |
120 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
121 | */ | |
122 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
123 | ||
4df27c4d YZ |
124 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
125 | ||
126 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 | |
127 | ||
e20d96d6 CM |
128 | /* |
129 | * we can actually store much bigger names, but lets not confuse the rest | |
130 | * of linux | |
131 | */ | |
132 | #define BTRFS_NAME_LEN 255 | |
133 | ||
f254e52c CM |
134 | /* 32 bytes in various csum fields */ |
135 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
136 | |
137 | /* csum types */ | |
138 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
139 | ||
140 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
141 | ||
509659cd | 142 | /* four bytes for CRC32 */ |
3954401f | 143 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 144 | |
fabb5681 CM |
145 | #define BTRFS_FT_UNKNOWN 0 |
146 | #define BTRFS_FT_REG_FILE 1 | |
147 | #define BTRFS_FT_DIR 2 | |
148 | #define BTRFS_FT_CHRDEV 3 | |
149 | #define BTRFS_FT_BLKDEV 4 | |
150 | #define BTRFS_FT_FIFO 5 | |
151 | #define BTRFS_FT_SOCK 6 | |
152 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
153 | #define BTRFS_FT_XATTR 8 |
154 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 155 | |
fec577fb | 156 | /* |
d4a78947 WF |
157 | * The key defines the order in the tree, and so it also defines (optimal) |
158 | * block layout. | |
159 | * | |
160 | * objectid corresponds to the inode number. | |
161 | * | |
162 | * type tells us things about the object, and is a kind of stream selector. | |
163 | * so for a given inode, keys with type of 1 might refer to the inode data, | |
164 | * type of 2 may point to file data in the btree and type == 3 may point to | |
165 | * extents. | |
fec577fb CM |
166 | * |
167 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
168 | * |
169 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
170 | * in cpu native order. Otherwise they are identical and their sizes | |
171 | * should be the same (ie both packed) | |
fec577fb | 172 | */ |
e2fa7227 CM |
173 | struct btrfs_disk_key { |
174 | __le64 objectid; | |
5f39d397 | 175 | u8 type; |
70b2befd | 176 | __le64 offset; |
e2fa7227 CM |
177 | } __attribute__ ((__packed__)); |
178 | ||
179 | struct btrfs_key { | |
eb60ceac | 180 | u64 objectid; |
5f39d397 | 181 | u8 type; |
70b2befd | 182 | u64 offset; |
eb60ceac CM |
183 | } __attribute__ ((__packed__)); |
184 | ||
0b86a832 CM |
185 | struct btrfs_mapping_tree { |
186 | struct extent_map_tree map_tree; | |
187 | }; | |
188 | ||
e17cade2 | 189 | #define BTRFS_UUID_SIZE 16 |
0b86a832 CM |
190 | struct btrfs_dev_item { |
191 | /* the internal btrfs device id */ | |
192 | __le64 devid; | |
193 | ||
194 | /* size of the device */ | |
195 | __le64 total_bytes; | |
196 | ||
197 | /* bytes used */ | |
198 | __le64 bytes_used; | |
199 | ||
200 | /* optimal io alignment for this device */ | |
201 | __le32 io_align; | |
202 | ||
203 | /* optimal io width for this device */ | |
204 | __le32 io_width; | |
205 | ||
206 | /* minimal io size for this device */ | |
207 | __le32 sector_size; | |
208 | ||
0b86a832 CM |
209 | /* type and info about this device */ |
210 | __le64 type; | |
211 | ||
2b82032c YZ |
212 | /* expected generation for this device */ |
213 | __le64 generation; | |
214 | ||
c3027eb5 CM |
215 | /* |
216 | * starting byte of this partition on the device, | |
d4a78947 | 217 | * to allow for stripe alignment in the future |
c3027eb5 CM |
218 | */ |
219 | __le64 start_offset; | |
220 | ||
e17cade2 CM |
221 | /* grouping information for allocation decisions */ |
222 | __le32 dev_group; | |
223 | ||
224 | /* seek speed 0-100 where 100 is fastest */ | |
225 | u8 seek_speed; | |
226 | ||
227 | /* bandwidth 0-100 where 100 is fastest */ | |
228 | u8 bandwidth; | |
229 | ||
0d81ba5d | 230 | /* btrfs generated uuid for this device */ |
e17cade2 | 231 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
232 | |
233 | /* uuid of FS who owns this device */ | |
234 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
235 | } __attribute__ ((__packed__)); |
236 | ||
237 | struct btrfs_stripe { | |
238 | __le64 devid; | |
239 | __le64 offset; | |
e17cade2 | 240 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
241 | } __attribute__ ((__packed__)); |
242 | ||
243 | struct btrfs_chunk { | |
e17cade2 CM |
244 | /* size of this chunk in bytes */ |
245 | __le64 length; | |
246 | ||
247 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 248 | __le64 owner; |
e17cade2 | 249 | |
0b86a832 CM |
250 | __le64 stripe_len; |
251 | __le64 type; | |
252 | ||
253 | /* optimal io alignment for this chunk */ | |
254 | __le32 io_align; | |
255 | ||
256 | /* optimal io width for this chunk */ | |
257 | __le32 io_width; | |
258 | ||
259 | /* minimal io size for this chunk */ | |
260 | __le32 sector_size; | |
261 | ||
262 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
263 | * item in the btree | |
264 | */ | |
265 | __le16 num_stripes; | |
321aecc6 CM |
266 | |
267 | /* sub stripes only matter for raid10 */ | |
268 | __le16 sub_stripes; | |
0b86a832 CM |
269 | struct btrfs_stripe stripe; |
270 | /* additional stripes go here */ | |
271 | } __attribute__ ((__packed__)); | |
272 | ||
0af3d00b JB |
273 | #define BTRFS_FREE_SPACE_EXTENT 1 |
274 | #define BTRFS_FREE_SPACE_BITMAP 2 | |
275 | ||
276 | struct btrfs_free_space_entry { | |
277 | __le64 offset; | |
278 | __le64 bytes; | |
279 | u8 type; | |
280 | } __attribute__ ((__packed__)); | |
281 | ||
282 | struct btrfs_free_space_header { | |
283 | struct btrfs_disk_key location; | |
284 | __le64 generation; | |
285 | __le64 num_entries; | |
286 | __le64 num_bitmaps; | |
287 | } __attribute__ ((__packed__)); | |
288 | ||
0b86a832 CM |
289 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
290 | { | |
291 | BUG_ON(num_stripes == 0); | |
292 | return sizeof(struct btrfs_chunk) + | |
293 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
294 | } | |
295 | ||
5f39d397 | 296 | #define BTRFS_FSID_SIZE 16 |
5d4f98a2 YZ |
297 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
298 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) | |
acce952b | 299 | |
300 | /* | |
301 | * File system states | |
302 | */ | |
303 | ||
304 | /* Errors detected */ | |
305 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) | |
306 | ||
5d4f98a2 YZ |
307 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
308 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) | |
309 | ||
310 | #define BTRFS_BACKREF_REV_MAX 256 | |
311 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
312 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
313 | BTRFS_BACKREF_REV_SHIFT) | |
314 | ||
315 | #define BTRFS_OLD_BACKREF_REV 0 | |
316 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 317 | |
fec577fb CM |
318 | /* |
319 | * every tree block (leaf or node) starts with this header. | |
320 | */ | |
bb492bb0 | 321 | struct btrfs_header { |
e17cade2 | 322 | /* these first four must match the super block */ |
f254e52c | 323 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 324 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 325 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 326 | __le64 flags; |
e17cade2 CM |
327 | |
328 | /* allowed to be different from the super from here on down */ | |
329 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 330 | __le64 generation; |
4d775673 | 331 | __le64 owner; |
5f39d397 | 332 | __le32 nritems; |
9a6f11ed | 333 | u8 level; |
eb60ceac CM |
334 | } __attribute__ ((__packed__)); |
335 | ||
5f39d397 | 336 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
337 | sizeof(struct btrfs_header)) / \ |
338 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 339 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 340 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
341 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
342 | sizeof(struct btrfs_item) - \ | |
343 | sizeof(struct btrfs_file_extent_item)) | |
f34f57a3 YZ |
344 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
345 | sizeof(struct btrfs_item) -\ | |
346 | sizeof(struct btrfs_dir_item)) | |
eb60ceac | 347 | |
0b86a832 CM |
348 | |
349 | /* | |
350 | * this is a very generous portion of the super block, giving us | |
351 | * room to translate 14 chunks with 3 stripes each. | |
352 | */ | |
353 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 354 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 355 | |
fec577fb CM |
356 | /* |
357 | * the super block basically lists the main trees of the FS | |
358 | * it currently lacks any block count etc etc | |
359 | */ | |
234b63a0 | 360 | struct btrfs_super_block { |
f254e52c | 361 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 362 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 363 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 364 | __le64 bytenr; /* this block number */ |
63b10fc4 | 365 | __le64 flags; |
e17cade2 CM |
366 | |
367 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 368 | __le64 magic; |
3768f368 CM |
369 | __le64 generation; |
370 | __le64 root; | |
0b86a832 | 371 | __le64 chunk_root; |
e02119d5 | 372 | __le64 log_root; |
c3027eb5 CM |
373 | |
374 | /* this will help find the new super based on the log root */ | |
375 | __le64 log_root_transid; | |
db94535d CM |
376 | __le64 total_bytes; |
377 | __le64 bytes_used; | |
2e635a27 | 378 | __le64 root_dir_objectid; |
8a4b83cc | 379 | __le64 num_devices; |
5f39d397 CM |
380 | __le32 sectorsize; |
381 | __le32 nodesize; | |
382 | __le32 leafsize; | |
87ee04eb | 383 | __le32 stripesize; |
0b86a832 | 384 | __le32 sys_chunk_array_size; |
84234f3a | 385 | __le64 chunk_root_generation; |
f2b636e8 JB |
386 | __le64 compat_flags; |
387 | __le64 compat_ro_flags; | |
388 | __le64 incompat_flags; | |
607d432d | 389 | __le16 csum_type; |
db94535d | 390 | u8 root_level; |
0b86a832 | 391 | u8 chunk_root_level; |
e02119d5 | 392 | u8 log_root_level; |
0d81ba5d | 393 | struct btrfs_dev_item dev_item; |
c3027eb5 | 394 | |
7ae9c09d | 395 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 396 | |
0af3d00b JB |
397 | __le64 cache_generation; |
398 | ||
c3027eb5 | 399 | /* future expansion */ |
0af3d00b | 400 | __le64 reserved[31]; |
0b86a832 | 401 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
cfaa7295 CM |
402 | } __attribute__ ((__packed__)); |
403 | ||
f2b636e8 JB |
404 | /* |
405 | * Compat flags that we support. If any incompat flags are set other than the | |
406 | * ones specified below then we will fail to mount | |
407 | */ | |
5d4f98a2 | 408 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
0af3d00b | 409 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
67377734 | 410 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
a6fa6fae | 411 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
5d4f98a2 YZ |
412 | |
413 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL | |
414 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL | |
0af3d00b JB |
415 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
416 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 417 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae LZ |
418 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
419 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO) | |
f2b636e8 | 420 | |
fec577fb | 421 | /* |
62e2749e | 422 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
423 | * the item in the leaf (relative to the start of the data area) |
424 | */ | |
0783fcfc | 425 | struct btrfs_item { |
e2fa7227 | 426 | struct btrfs_disk_key key; |
123abc88 | 427 | __le32 offset; |
5f39d397 | 428 | __le32 size; |
eb60ceac CM |
429 | } __attribute__ ((__packed__)); |
430 | ||
fec577fb CM |
431 | /* |
432 | * leaves have an item area and a data area: | |
433 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
434 | * | |
435 | * The data is separate from the items to get the keys closer together | |
436 | * during searches. | |
437 | */ | |
234b63a0 | 438 | struct btrfs_leaf { |
bb492bb0 | 439 | struct btrfs_header header; |
123abc88 | 440 | struct btrfs_item items[]; |
eb60ceac CM |
441 | } __attribute__ ((__packed__)); |
442 | ||
fec577fb CM |
443 | /* |
444 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
445 | * other blocks | |
446 | */ | |
123abc88 CM |
447 | struct btrfs_key_ptr { |
448 | struct btrfs_disk_key key; | |
449 | __le64 blockptr; | |
74493f7a | 450 | __le64 generation; |
123abc88 CM |
451 | } __attribute__ ((__packed__)); |
452 | ||
234b63a0 | 453 | struct btrfs_node { |
bb492bb0 | 454 | struct btrfs_header header; |
123abc88 | 455 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
456 | } __attribute__ ((__packed__)); |
457 | ||
fec577fb | 458 | /* |
234b63a0 CM |
459 | * btrfs_paths remember the path taken from the root down to the leaf. |
460 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
461 | * to any other levels that are present. |
462 | * | |
463 | * The slots array records the index of the item or block pointer | |
464 | * used while walking the tree. | |
465 | */ | |
234b63a0 | 466 | struct btrfs_path { |
5f39d397 | 467 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 468 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
469 | /* if there is real range locking, this locks field will change */ |
470 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 471 | int reada; |
925baedd | 472 | /* keep some upper locks as we walk down */ |
6702ed49 | 473 | int lowest_level; |
459931ec CM |
474 | |
475 | /* | |
476 | * set by btrfs_split_item, tells search_slot to keep all locks | |
477 | * and to force calls to keep space in the nodes | |
478 | */ | |
b9473439 CM |
479 | unsigned int search_for_split:1; |
480 | unsigned int keep_locks:1; | |
481 | unsigned int skip_locking:1; | |
482 | unsigned int leave_spinning:1; | |
5d4f98a2 | 483 | unsigned int search_commit_root:1; |
eb60ceac | 484 | }; |
5de08d7d | 485 | |
62e2749e CM |
486 | /* |
487 | * items in the extent btree are used to record the objectid of the | |
488 | * owner of the block and the number of references | |
489 | */ | |
5d4f98a2 | 490 | |
62e2749e | 491 | struct btrfs_extent_item { |
5d4f98a2 YZ |
492 | __le64 refs; |
493 | __le64 generation; | |
494 | __le64 flags; | |
495 | } __attribute__ ((__packed__)); | |
496 | ||
497 | struct btrfs_extent_item_v0 { | |
62e2749e | 498 | __le32 refs; |
74493f7a CM |
499 | } __attribute__ ((__packed__)); |
500 | ||
5d4f98a2 YZ |
501 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
502 | sizeof(struct btrfs_item)) | |
503 | ||
504 | #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) | |
505 | #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) | |
506 | ||
507 | /* following flags only apply to tree blocks */ | |
508 | ||
509 | /* use full backrefs for extent pointers in the block */ | |
510 | #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) | |
511 | ||
512 | struct btrfs_tree_block_info { | |
513 | struct btrfs_disk_key key; | |
514 | u8 level; | |
515 | } __attribute__ ((__packed__)); | |
516 | ||
517 | struct btrfs_extent_data_ref { | |
518 | __le64 root; | |
519 | __le64 objectid; | |
520 | __le64 offset; | |
521 | __le32 count; | |
522 | } __attribute__ ((__packed__)); | |
523 | ||
524 | struct btrfs_shared_data_ref { | |
525 | __le32 count; | |
526 | } __attribute__ ((__packed__)); | |
527 | ||
528 | struct btrfs_extent_inline_ref { | |
529 | u8 type; | |
1bec1aed | 530 | __le64 offset; |
5d4f98a2 YZ |
531 | } __attribute__ ((__packed__)); |
532 | ||
533 | /* old style backrefs item */ | |
534 | struct btrfs_extent_ref_v0 { | |
74493f7a CM |
535 | __le64 root; |
536 | __le64 generation; | |
537 | __le64 objectid; | |
5d4f98a2 | 538 | __le32 count; |
62e2749e CM |
539 | } __attribute__ ((__packed__)); |
540 | ||
5d4f98a2 | 541 | |
0b86a832 CM |
542 | /* dev extents record free space on individual devices. The owner |
543 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 544 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
545 | */ |
546 | struct btrfs_dev_extent { | |
e17cade2 CM |
547 | __le64 chunk_tree; |
548 | __le64 chunk_objectid; | |
549 | __le64 chunk_offset; | |
0b86a832 | 550 | __le64 length; |
e17cade2 | 551 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
552 | } __attribute__ ((__packed__)); |
553 | ||
3954401f | 554 | struct btrfs_inode_ref { |
aec7477b | 555 | __le64 index; |
3954401f CM |
556 | __le16 name_len; |
557 | /* name goes here */ | |
558 | } __attribute__ ((__packed__)); | |
559 | ||
0b86a832 | 560 | struct btrfs_timespec { |
f254e52c | 561 | __le64 sec; |
1e1d2701 CM |
562 | __le32 nsec; |
563 | } __attribute__ ((__packed__)); | |
564 | ||
95029d7d | 565 | enum btrfs_compression_type { |
261507a0 LZ |
566 | BTRFS_COMPRESS_NONE = 0, |
567 | BTRFS_COMPRESS_ZLIB = 1, | |
a6fa6fae LZ |
568 | BTRFS_COMPRESS_LZO = 2, |
569 | BTRFS_COMPRESS_TYPES = 2, | |
570 | BTRFS_COMPRESS_LAST = 3, | |
95029d7d | 571 | }; |
c8b97818 | 572 | |
1e1d2701 | 573 | struct btrfs_inode_item { |
e02119d5 | 574 | /* nfs style generation number */ |
1e1d2701 | 575 | __le64 generation; |
e02119d5 CM |
576 | /* transid that last touched this inode */ |
577 | __le64 transid; | |
1e1d2701 | 578 | __le64 size; |
a76a3cd4 | 579 | __le64 nbytes; |
31f3c99b | 580 | __le64 block_group; |
1e1d2701 CM |
581 | __le32 nlink; |
582 | __le32 uid; | |
583 | __le32 gid; | |
584 | __le32 mode; | |
0b86a832 | 585 | __le64 rdev; |
f2b636e8 | 586 | __le64 flags; |
c8b97818 | 587 | |
c3027eb5 CM |
588 | /* modification sequence number for NFS */ |
589 | __le64 sequence; | |
590 | ||
591 | /* | |
592 | * a little future expansion, for more than this we can | |
593 | * just grow the inode item and version it | |
594 | */ | |
595 | __le64 reserved[4]; | |
0b86a832 CM |
596 | struct btrfs_timespec atime; |
597 | struct btrfs_timespec ctime; | |
598 | struct btrfs_timespec mtime; | |
599 | struct btrfs_timespec otime; | |
1e1d2701 CM |
600 | } __attribute__ ((__packed__)); |
601 | ||
e02119d5 CM |
602 | struct btrfs_dir_log_item { |
603 | __le64 end; | |
604 | } __attribute__ ((__packed__)); | |
605 | ||
62e2749e | 606 | struct btrfs_dir_item { |
d6e4a428 | 607 | struct btrfs_disk_key location; |
e02119d5 | 608 | __le64 transid; |
5103e947 | 609 | __le16 data_len; |
a8a2ee0c | 610 | __le16 name_len; |
62e2749e CM |
611 | u8 type; |
612 | } __attribute__ ((__packed__)); | |
613 | ||
b83cc969 LZ |
614 | #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) |
615 | ||
62e2749e | 616 | struct btrfs_root_item { |
d6e4a428 | 617 | struct btrfs_inode_item inode; |
84234f3a | 618 | __le64 generation; |
d6e4a428 | 619 | __le64 root_dirid; |
db94535d CM |
620 | __le64 bytenr; |
621 | __le64 byte_limit; | |
622 | __le64 bytes_used; | |
80ff3856 | 623 | __le64 last_snapshot; |
f2b636e8 | 624 | __le64 flags; |
62e2749e | 625 | __le32 refs; |
5eda7b5e CM |
626 | struct btrfs_disk_key drop_progress; |
627 | u8 drop_level; | |
db94535d | 628 | u8 level; |
9f5fae2f | 629 | } __attribute__ ((__packed__)); |
62e2749e | 630 | |
0660b5af CM |
631 | /* |
632 | * this is used for both forward and backward root refs | |
633 | */ | |
634 | struct btrfs_root_ref { | |
635 | __le64 dirid; | |
636 | __le64 sequence; | |
637 | __le16 name_len; | |
638 | } __attribute__ ((__packed__)); | |
639 | ||
d899e052 YZ |
640 | #define BTRFS_FILE_EXTENT_INLINE 0 |
641 | #define BTRFS_FILE_EXTENT_REG 1 | |
642 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 643 | |
9f5fae2f | 644 | struct btrfs_file_extent_item { |
c8b97818 CM |
645 | /* |
646 | * transaction id that created this extent | |
647 | */ | |
71951f35 | 648 | __le64 generation; |
c8b97818 CM |
649 | /* |
650 | * max number of bytes to hold this extent in ram | |
651 | * when we split a compressed extent we can't know how big | |
652 | * each of the resulting pieces will be. So, this is | |
653 | * an upper limit on the size of the extent in ram instead of | |
654 | * an exact limit. | |
655 | */ | |
656 | __le64 ram_bytes; | |
657 | ||
658 | /* | |
659 | * 32 bits for the various ways we might encode the data, | |
660 | * including compression and encryption. If any of these | |
661 | * are set to something a given disk format doesn't understand | |
662 | * it is treated like an incompat flag for reading and writing, | |
663 | * but not for stat. | |
664 | */ | |
665 | u8 compression; | |
666 | u8 encryption; | |
667 | __le16 other_encoding; /* spare for later use */ | |
668 | ||
669 | /* are we inline data or a real extent? */ | |
236454df | 670 | u8 type; |
c8b97818 | 671 | |
9f5fae2f CM |
672 | /* |
673 | * disk space consumed by the extent, checksum blocks are included | |
674 | * in these numbers | |
675 | */ | |
db94535d CM |
676 | __le64 disk_bytenr; |
677 | __le64 disk_num_bytes; | |
9f5fae2f | 678 | /* |
dee26a9f | 679 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
680 | * this extent record is for. This allows a file extent to point |
681 | * into the middle of an existing extent on disk, sharing it | |
682 | * between two snapshots (useful if some bytes in the middle of the | |
683 | * extent have changed | |
684 | */ | |
685 | __le64 offset; | |
686 | /* | |
c8b97818 CM |
687 | * the logical number of file blocks (no csums included). This |
688 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 689 | */ |
db94535d | 690 | __le64 num_bytes; |
c8b97818 | 691 | |
9f5fae2f CM |
692 | } __attribute__ ((__packed__)); |
693 | ||
f254e52c | 694 | struct btrfs_csum_item { |
509659cd | 695 | u8 csum; |
f254e52c CM |
696 | } __attribute__ ((__packed__)); |
697 | ||
0b86a832 CM |
698 | /* different types of block groups (and chunks) */ |
699 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
700 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
701 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 702 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 703 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 704 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 705 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
b742bb82 | 706 | #define BTRFS_NR_RAID_TYPES 5 |
1e2677e0 | 707 | |
9078a3e1 CM |
708 | struct btrfs_block_group_item { |
709 | __le64 used; | |
0b86a832 CM |
710 | __le64 chunk_objectid; |
711 | __le64 flags; | |
9078a3e1 CM |
712 | } __attribute__ ((__packed__)); |
713 | ||
6324fbf3 CM |
714 | struct btrfs_space_info { |
715 | u64 flags; | |
6a63209f | 716 | |
89a55897 JB |
717 | u64 total_bytes; /* total bytes in the space, |
718 | this doesn't take mirrors into account */ | |
b742bb82 YZ |
719 | u64 bytes_used; /* total bytes used, |
720 | this does't take mirrors into account */ | |
6a63209f JB |
721 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
722 | transaction finishes */ | |
723 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
724 | current allocations */ | |
725 | u64 bytes_readonly; /* total bytes that are read only */ | |
8929ecfa | 726 | |
6a63209f | 727 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 728 | delalloc/allocations */ |
b742bb82 | 729 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
730 | u64 disk_total; /* total bytes on disk, takes mirrors into |
731 | account */ | |
6a63209f | 732 | |
36e39c40 CM |
733 | /* |
734 | * we bump reservation progress every time we decrement | |
735 | * bytes_reserved. This way people waiting for reservations | |
736 | * know something good has happened and they can check | |
737 | * for progress. The number here isn't to be trusted, it | |
738 | * just shows reclaim activity | |
739 | */ | |
740 | unsigned long reservation_progress; | |
741 | ||
6a63209f JB |
742 | int full; /* indicates that we cannot allocate any more |
743 | chunks for this space */ | |
744 | int force_alloc; /* set if we need to force a chunk alloc for | |
745 | this space */ | |
746 | ||
6324fbf3 | 747 | struct list_head list; |
0f9dd46c JB |
748 | |
749 | /* for block groups in our same type */ | |
b742bb82 | 750 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
0f9dd46c | 751 | spinlock_t lock; |
80eb234a | 752 | struct rw_semaphore groups_sem; |
817d52f8 | 753 | atomic_t caching_threads; |
0f9dd46c JB |
754 | }; |
755 | ||
f0486c68 YZ |
756 | struct btrfs_block_rsv { |
757 | u64 size; | |
758 | u64 reserved; | |
759 | u64 freed[2]; | |
760 | struct btrfs_space_info *space_info; | |
761 | struct list_head list; | |
762 | spinlock_t lock; | |
763 | atomic_t usage; | |
764 | unsigned int priority:8; | |
765 | unsigned int durable:1; | |
766 | unsigned int refill_used:1; | |
767 | unsigned int full:1; | |
768 | }; | |
769 | ||
fa9c0d79 CM |
770 | /* |
771 | * free clusters are used to claim free space in relatively large chunks, | |
772 | * allowing us to do less seeky writes. They are used for all metadata | |
773 | * allocations and data allocations in ssd mode. | |
774 | */ | |
775 | struct btrfs_free_cluster { | |
776 | spinlock_t lock; | |
777 | spinlock_t refill_lock; | |
778 | struct rb_root root; | |
779 | ||
780 | /* largest extent in this cluster */ | |
781 | u64 max_size; | |
782 | ||
783 | /* first extent starting offset */ | |
784 | u64 window_start; | |
785 | ||
96303081 JB |
786 | /* if this cluster simply points at a bitmap in the block group */ |
787 | bool points_to_bitmap; | |
788 | ||
fa9c0d79 CM |
789 | struct btrfs_block_group_cache *block_group; |
790 | /* | |
791 | * when a cluster is allocated from a block group, we put the | |
792 | * cluster onto a list in the block group so that it can | |
793 | * be freed before the block group is freed. | |
794 | */ | |
795 | struct list_head block_group_list; | |
6324fbf3 CM |
796 | }; |
797 | ||
817d52f8 JB |
798 | enum btrfs_caching_type { |
799 | BTRFS_CACHE_NO = 0, | |
800 | BTRFS_CACHE_STARTED = 1, | |
801 | BTRFS_CACHE_FINISHED = 2, | |
802 | }; | |
803 | ||
0af3d00b JB |
804 | enum btrfs_disk_cache_state { |
805 | BTRFS_DC_WRITTEN = 0, | |
806 | BTRFS_DC_ERROR = 1, | |
807 | BTRFS_DC_CLEAR = 2, | |
808 | BTRFS_DC_SETUP = 3, | |
809 | BTRFS_DC_NEED_WRITE = 4, | |
810 | }; | |
811 | ||
11833d66 YZ |
812 | struct btrfs_caching_control { |
813 | struct list_head list; | |
814 | struct mutex mutex; | |
815 | wait_queue_head_t wait; | |
816 | struct btrfs_block_group_cache *block_group; | |
817 | u64 progress; | |
818 | atomic_t count; | |
819 | }; | |
820 | ||
9078a3e1 CM |
821 | struct btrfs_block_group_cache { |
822 | struct btrfs_key key; | |
823 | struct btrfs_block_group_item item; | |
817d52f8 | 824 | struct btrfs_fs_info *fs_info; |
0af3d00b | 825 | struct inode *inode; |
c286ac48 | 826 | spinlock_t lock; |
324ae4df | 827 | u64 pinned; |
e8569813 | 828 | u64 reserved; |
f0486c68 | 829 | u64 reserved_pinned; |
1b2da372 | 830 | u64 bytes_super; |
0b86a832 | 831 | u64 flags; |
96303081 JB |
832 | u64 sectorsize; |
833 | int extents_thresh; | |
834 | int free_extents; | |
835 | int total_bitmaps; | |
0410c94a MK |
836 | unsigned int ro:1; |
837 | unsigned int dirty:1; | |
838 | unsigned int iref:1; | |
0af3d00b JB |
839 | |
840 | int disk_cache_state; | |
0f9dd46c | 841 | |
817d52f8 | 842 | /* cache tracking stuff */ |
817d52f8 | 843 | int cached; |
11833d66 YZ |
844 | struct btrfs_caching_control *caching_ctl; |
845 | u64 last_byte_to_unpin; | |
817d52f8 | 846 | |
0f9dd46c JB |
847 | struct btrfs_space_info *space_info; |
848 | ||
849 | /* free space cache stuff */ | |
6226cb0a | 850 | spinlock_t tree_lock; |
0f9dd46c | 851 | struct rb_root free_space_offset; |
817d52f8 | 852 | u64 free_space; |
0f9dd46c JB |
853 | |
854 | /* block group cache stuff */ | |
855 | struct rb_node cache_node; | |
856 | ||
857 | /* for block groups in the same raid type */ | |
858 | struct list_head list; | |
d2fb3437 YZ |
859 | |
860 | /* usage count */ | |
861 | atomic_t count; | |
fa9c0d79 CM |
862 | |
863 | /* List of struct btrfs_free_clusters for this block group. | |
864 | * Today it will only have one thing on it, but that may change | |
865 | */ | |
866 | struct list_head cluster_list; | |
9078a3e1 | 867 | }; |
0b86a832 | 868 | |
5d4f98a2 | 869 | struct reloc_control; |
0b86a832 | 870 | struct btrfs_device; |
8a4b83cc | 871 | struct btrfs_fs_devices; |
9f5fae2f | 872 | struct btrfs_fs_info { |
5f39d397 | 873 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 874 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
875 | struct btrfs_root *extent_root; |
876 | struct btrfs_root *tree_root; | |
0b86a832 CM |
877 | struct btrfs_root *chunk_root; |
878 | struct btrfs_root *dev_root; | |
3de4586c | 879 | struct btrfs_root *fs_root; |
d20f7043 | 880 | struct btrfs_root *csum_root; |
e02119d5 CM |
881 | |
882 | /* the log root tree is a directory of all the other log roots */ | |
883 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
884 | |
885 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 886 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 887 | |
0f9dd46c JB |
888 | /* block group cache stuff */ |
889 | spinlock_t block_group_cache_lock; | |
890 | struct rb_root block_group_cache_tree; | |
891 | ||
11833d66 YZ |
892 | struct extent_io_tree freed_extents[2]; |
893 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 894 | |
0b86a832 CM |
895 | /* logical->physical extent mapping */ |
896 | struct btrfs_mapping_tree mapping_tree; | |
897 | ||
f0486c68 YZ |
898 | /* block reservation for extent, checksum and root tree */ |
899 | struct btrfs_block_rsv global_block_rsv; | |
900 | /* block reservation for delay allocation */ | |
901 | struct btrfs_block_rsv delalloc_block_rsv; | |
902 | /* block reservation for metadata operations */ | |
903 | struct btrfs_block_rsv trans_block_rsv; | |
904 | /* block reservation for chunk tree */ | |
905 | struct btrfs_block_rsv chunk_block_rsv; | |
906 | ||
907 | struct btrfs_block_rsv empty_block_rsv; | |
908 | ||
909 | /* list of block reservations that cross multiple transactions */ | |
910 | struct list_head durable_block_rsv_list; | |
911 | ||
912 | struct mutex durable_block_rsv_mutex; | |
913 | ||
293ffd5f | 914 | u64 generation; |
15ee9bc7 | 915 | u64 last_trans_committed; |
12fcfd22 CM |
916 | |
917 | /* | |
918 | * this is updated to the current trans every time a full commit | |
919 | * is required instead of the faster short fsync log commits | |
920 | */ | |
921 | u64 last_trans_log_full_commit; | |
9ca9ee09 | 922 | u64 open_ioctl_trans; |
261507a0 LZ |
923 | unsigned long mount_opt:20; |
924 | unsigned long compress_type:4; | |
6f568d35 | 925 | u64 max_inline; |
8f662a76 | 926 | u64 alloc_start; |
79154b1b | 927 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 928 | wait_queue_head_t transaction_throttle; |
f9295749 | 929 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 930 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 931 | wait_queue_head_t async_submit_wait; |
e02119d5 | 932 | |
4b52dff6 | 933 | struct btrfs_super_block super_copy; |
a061fc8d | 934 | struct btrfs_super_block super_for_commit; |
0b86a832 | 935 | struct block_device *__bdev; |
e20d96d6 | 936 | struct super_block *sb; |
d98237b3 | 937 | struct inode *btree_inode; |
04160088 | 938 | struct backing_dev_info bdi; |
79154b1b | 939 | struct mutex trans_mutex; |
e02119d5 | 940 | struct mutex tree_log_mutex; |
a74a4b97 CM |
941 | struct mutex transaction_kthread_mutex; |
942 | struct mutex cleaner_mutex; | |
925baedd | 943 | struct mutex chunk_mutex; |
7d9eb12c | 944 | struct mutex volume_mutex; |
5a3f23d5 CM |
945 | /* |
946 | * this protects the ordered operations list only while we are | |
947 | * processing all of the entries on it. This way we make | |
948 | * sure the commit code doesn't find the list temporarily empty | |
949 | * because another function happens to be doing non-waiting preflush | |
950 | * before jumping into the main commit. | |
951 | */ | |
952 | struct mutex ordered_operations_mutex; | |
11833d66 | 953 | struct rw_semaphore extent_commit_sem; |
5a3f23d5 | 954 | |
c71bf099 | 955 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 956 | |
c71bf099 | 957 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
958 | struct srcu_struct subvol_srcu; |
959 | ||
8fd17795 | 960 | struct list_head trans_list; |
19c00ddc | 961 | struct list_head hashers; |
facda1e7 | 962 | struct list_head dead_roots; |
11833d66 | 963 | struct list_head caching_block_groups; |
e02119d5 | 964 | |
24bbcf04 YZ |
965 | spinlock_t delayed_iput_lock; |
966 | struct list_head delayed_iputs; | |
967 | ||
cb03c743 | 968 | atomic_t nr_async_submits; |
8c8bee1d | 969 | atomic_t async_submit_draining; |
0986fe9e | 970 | atomic_t nr_async_bios; |
771ed689 | 971 | atomic_t async_delalloc_pages; |
ce9adaa5 | 972 | |
3eaa2885 CM |
973 | /* |
974 | * this is used by the balancing code to wait for all the pending | |
975 | * ordered extents | |
976 | */ | |
977 | spinlock_t ordered_extent_lock; | |
5a3f23d5 CM |
978 | |
979 | /* | |
980 | * all of the data=ordered extents pending writeback | |
981 | * these can span multiple transactions and basically include | |
982 | * every dirty data page that isn't from nodatacow | |
983 | */ | |
3eaa2885 | 984 | struct list_head ordered_extents; |
5a3f23d5 CM |
985 | |
986 | /* | |
987 | * all of the inodes that have delalloc bytes. It is possible for | |
988 | * this list to be empty even when there is still dirty data=ordered | |
989 | * extents waiting to finish IO. | |
990 | */ | |
ea8c2819 | 991 | struct list_head delalloc_inodes; |
3eaa2885 | 992 | |
5a3f23d5 CM |
993 | /* |
994 | * special rename and truncate targets that must be on disk before | |
995 | * we're allowed to commit. This is basically the ext3 style | |
996 | * data=ordered list. | |
997 | */ | |
998 | struct list_head ordered_operations; | |
999 | ||
8b712842 CM |
1000 | /* |
1001 | * there is a pool of worker threads for checksumming during writes | |
1002 | * and a pool for checksumming after reads. This is because readers | |
1003 | * can run with FS locks held, and the writers may be waiting for | |
1004 | * those locks. We don't want ordering in the pending list to cause | |
1005 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
1006 | * |
1007 | * A third pool does submit_bio to avoid deadlocking with the other | |
1008 | * two | |
8b712842 | 1009 | */ |
61d92c32 | 1010 | struct btrfs_workers generic_worker; |
8b712842 | 1011 | struct btrfs_workers workers; |
771ed689 | 1012 | struct btrfs_workers delalloc_workers; |
8b712842 | 1013 | struct btrfs_workers endio_workers; |
d20f7043 | 1014 | struct btrfs_workers endio_meta_workers; |
cad321ad | 1015 | struct btrfs_workers endio_meta_write_workers; |
e6dcd2dc | 1016 | struct btrfs_workers endio_write_workers; |
0cb59c99 | 1017 | struct btrfs_workers endio_freespace_worker; |
1cc127b5 | 1018 | struct btrfs_workers submit_workers; |
247e743c CM |
1019 | /* |
1020 | * fixup workers take dirty pages that didn't properly go through | |
1021 | * the cow mechanism and make them safe to write. It happens | |
1022 | * for the sys_munmap function call path | |
1023 | */ | |
1024 | struct btrfs_workers fixup_workers; | |
a74a4b97 CM |
1025 | struct task_struct *transaction_kthread; |
1026 | struct task_struct *cleaner_kthread; | |
4543df7e | 1027 | int thread_pool_size; |
8b712842 | 1028 | |
58176a96 JB |
1029 | struct kobject super_kobj; |
1030 | struct completion kobj_unregister; | |
e66f709b | 1031 | int do_barriers; |
facda1e7 | 1032 | int closing; |
e02119d5 | 1033 | int log_root_recovering; |
a22285a6 | 1034 | int enospc_unlink; |
9f5fae2f | 1035 | |
324ae4df | 1036 | u64 total_pinned; |
b9473439 CM |
1037 | |
1038 | /* protected by the delalloc lock, used to keep from writing | |
1039 | * metadata until there is a nice batch | |
1040 | */ | |
1041 | u64 dirty_metadata_bytes; | |
0b86a832 CM |
1042 | struct list_head dirty_cowonly_roots; |
1043 | ||
8a4b83cc | 1044 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
1045 | |
1046 | /* | |
1047 | * the space_info list is almost entirely read only. It only changes | |
1048 | * when we add a new raid type to the FS, and that happens | |
1049 | * very rarely. RCU is used to protect it. | |
1050 | */ | |
6324fbf3 | 1051 | struct list_head space_info; |
4184ea7f | 1052 | |
5d4f98a2 YZ |
1053 | struct reloc_control *reloc_ctl; |
1054 | ||
1832a6d5 | 1055 | spinlock_t delalloc_lock; |
cee36a03 | 1056 | spinlock_t new_trans_lock; |
1832a6d5 | 1057 | u64 delalloc_bytes; |
fa9c0d79 CM |
1058 | |
1059 | /* data_alloc_cluster is only used in ssd mode */ | |
1060 | struct btrfs_free_cluster data_alloc_cluster; | |
1061 | ||
1062 | /* all metadata allocations go through this cluster */ | |
1063 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 1064 | |
31153d81 YZ |
1065 | spinlock_t ref_cache_lock; |
1066 | u64 total_ref_cache_size; | |
31153d81 | 1067 | |
d18a2c44 CM |
1068 | u64 avail_data_alloc_bits; |
1069 | u64 avail_metadata_alloc_bits; | |
1070 | u64 avail_system_alloc_bits; | |
1071 | u64 data_alloc_profile; | |
1072 | u64 metadata_alloc_profile; | |
1073 | u64 system_alloc_profile; | |
788f20eb | 1074 | |
97e728d4 JB |
1075 | unsigned data_chunk_allocations; |
1076 | unsigned metadata_ratio; | |
1077 | ||
788f20eb | 1078 | void *bdev_holder; |
acce952b | 1079 | |
1080 | /* filesystem state */ | |
1081 | u64 fs_state; | |
324ae4df | 1082 | }; |
0b86a832 | 1083 | |
9f5fae2f CM |
1084 | /* |
1085 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1086 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1087 | */ |
1088 | struct btrfs_root { | |
5f39d397 | 1089 | struct extent_buffer *node; |
925baedd CM |
1090 | |
1091 | /* the node lock is held while changing the node pointer */ | |
1092 | spinlock_t node_lock; | |
1093 | ||
5f39d397 | 1094 | struct extent_buffer *commit_root; |
e02119d5 | 1095 | struct btrfs_root *log_root; |
1a40e23b | 1096 | struct btrfs_root *reloc_root; |
31153d81 | 1097 | |
62e2749e CM |
1098 | struct btrfs_root_item root_item; |
1099 | struct btrfs_key root_key; | |
9f5fae2f | 1100 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1101 | struct extent_io_tree dirty_log_pages; |
1102 | ||
58176a96 JB |
1103 | struct kobject root_kobj; |
1104 | struct completion kobj_unregister; | |
a2135011 | 1105 | struct mutex objectid_mutex; |
7237f183 | 1106 | |
f0486c68 YZ |
1107 | spinlock_t accounting_lock; |
1108 | struct btrfs_block_rsv *block_rsv; | |
1109 | ||
e02119d5 | 1110 | struct mutex log_mutex; |
7237f183 YZ |
1111 | wait_queue_head_t log_writer_wait; |
1112 | wait_queue_head_t log_commit_wait[2]; | |
1113 | atomic_t log_writers; | |
1114 | atomic_t log_commit[2]; | |
1115 | unsigned long log_transid; | |
257c62e1 | 1116 | unsigned long last_log_commit; |
7237f183 | 1117 | unsigned long log_batch; |
ff782e0a JB |
1118 | pid_t log_start_pid; |
1119 | bool log_multiple_pids; | |
ea8c2819 | 1120 | |
0f7d52f4 CM |
1121 | u64 objectid; |
1122 | u64 last_trans; | |
5f39d397 CM |
1123 | |
1124 | /* data allocations are done in sectorsize units */ | |
1125 | u32 sectorsize; | |
1126 | ||
1127 | /* node allocations are done in nodesize units */ | |
1128 | u32 nodesize; | |
1129 | ||
1130 | /* leaf allocations are done in leafsize units */ | |
1131 | u32 leafsize; | |
1132 | ||
87ee04eb CM |
1133 | u32 stripesize; |
1134 | ||
9f5fae2f | 1135 | u32 type; |
13a8a7c8 YZ |
1136 | |
1137 | u64 highest_objectid; | |
9f3a7427 | 1138 | int ref_cows; |
0b86a832 | 1139 | int track_dirty; |
4df27c4d YZ |
1140 | int in_radix; |
1141 | ||
3f157a2f | 1142 | u64 defrag_trans_start; |
6702ed49 | 1143 | struct btrfs_key defrag_progress; |
0ef3e66b | 1144 | struct btrfs_key defrag_max; |
6702ed49 | 1145 | int defrag_running; |
58176a96 | 1146 | char *name; |
4313b399 | 1147 | int in_sysfs; |
0b86a832 CM |
1148 | |
1149 | /* the dirty list is only used by non-reference counted roots */ | |
1150 | struct list_head dirty_list; | |
7b128766 | 1151 | |
5d4f98a2 YZ |
1152 | struct list_head root_list; |
1153 | ||
d68fc57b | 1154 | spinlock_t orphan_lock; |
7b128766 | 1155 | struct list_head orphan_list; |
d68fc57b YZ |
1156 | struct btrfs_block_rsv *orphan_block_rsv; |
1157 | int orphan_item_inserted; | |
1158 | int orphan_cleanup_state; | |
3394e160 | 1159 | |
5d4f98a2 YZ |
1160 | spinlock_t inode_lock; |
1161 | /* red-black tree that keeps track of in-memory inodes */ | |
1162 | struct rb_root inode_tree; | |
1163 | ||
3394e160 CM |
1164 | /* |
1165 | * right now this just gets used so that a root has its own devid | |
1166 | * for stat. It may be used for more later | |
1167 | */ | |
1168 | struct super_block anon_super; | |
62e2749e CM |
1169 | }; |
1170 | ||
1e1d2701 CM |
1171 | /* |
1172 | * inode items have the data typically returned from stat and store other | |
1173 | * info about object characteristics. There is one for every file and dir in | |
1174 | * the FS | |
1175 | */ | |
9078a3e1 | 1176 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af CM |
1177 | #define BTRFS_INODE_REF_KEY 12 |
1178 | #define BTRFS_XATTR_ITEM_KEY 24 | |
1179 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 1180 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
1181 | |
1182 | /* | |
1183 | * dir items are the name -> inode pointers in a directory. There is one | |
1184 | * for every name in a directory. | |
1185 | */ | |
0660b5af CM |
1186 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
1187 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
1188 | #define BTRFS_DIR_ITEM_KEY 84 | |
1189 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 1190 | /* |
9078a3e1 | 1191 | * extent data is for file data |
1e1d2701 | 1192 | */ |
0660b5af | 1193 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 1194 | |
f254e52c | 1195 | /* |
d20f7043 CM |
1196 | * extent csums are stored in a separate tree and hold csums for |
1197 | * an entire extent on disk. | |
f254e52c | 1198 | */ |
d20f7043 | 1199 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 1200 | |
1e1d2701 | 1201 | /* |
d4a78947 | 1202 | * root items point to tree roots. They are typically in the root |
1e1d2701 CM |
1203 | * tree used by the super block to find all the other trees |
1204 | */ | |
0660b5af CM |
1205 | #define BTRFS_ROOT_ITEM_KEY 132 |
1206 | ||
1207 | /* | |
1208 | * root backrefs tie subvols and snapshots to the directory entries that | |
1209 | * reference them | |
1210 | */ | |
1211 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
1212 | ||
1213 | /* | |
1214 | * root refs make a fast index for listing all of the snapshots and | |
1215 | * subvolumes referenced by a given root. They point directly to the | |
1216 | * directory item in the root that references the subvol | |
1217 | */ | |
1218 | #define BTRFS_ROOT_REF_KEY 156 | |
1219 | ||
1e1d2701 CM |
1220 | /* |
1221 | * extent items are in the extent map tree. These record which blocks | |
1222 | * are used, and how many references there are to each block | |
1223 | */ | |
0660b5af | 1224 | #define BTRFS_EXTENT_ITEM_KEY 168 |
5d4f98a2 YZ |
1225 | |
1226 | #define BTRFS_TREE_BLOCK_REF_KEY 176 | |
1227 | ||
1228 | #define BTRFS_EXTENT_DATA_REF_KEY 178 | |
1229 | ||
1230 | #define BTRFS_EXTENT_REF_V0_KEY 180 | |
1231 | ||
1232 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 | |
1233 | ||
1234 | #define BTRFS_SHARED_DATA_REF_KEY 184 | |
9078a3e1 CM |
1235 | |
1236 | /* | |
1237 | * block groups give us hints into the extent allocation trees. Which | |
1238 | * blocks are free etc etc | |
1239 | */ | |
0660b5af | 1240 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 1241 | |
0660b5af CM |
1242 | #define BTRFS_DEV_EXTENT_KEY 204 |
1243 | #define BTRFS_DEV_ITEM_KEY 216 | |
1244 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 1245 | |
1e1d2701 CM |
1246 | /* |
1247 | * string items are for debugging. They just store a short string of | |
1248 | * data in the FS | |
1249 | */ | |
9078a3e1 CM |
1250 | #define BTRFS_STRING_ITEM_KEY 253 |
1251 | ||
21ad10cf CM |
1252 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1253 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1254 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1255 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1256 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1257 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1258 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1259 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1260 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1261 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1262 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1263 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1264 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1265 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1266 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1267 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
b6cda9bc CM |
1268 | |
1269 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
1270 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
1271 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
1272 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
1273 | /* |
1274 | * Inode flags | |
1275 | */ | |
fdebe2bd Y |
1276 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1277 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1278 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1279 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1280 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1281 | #define BTRFS_INODE_SYNC (1 << 5) |
1282 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1283 | #define BTRFS_INODE_APPEND (1 << 7) | |
1284 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1285 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1286 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
1287 | ||
5f39d397 CM |
1288 | /* some macros to generate set/get funcs for the struct fields. This |
1289 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
1290 | * one for u8: | |
1291 | */ | |
1292 | #define le8_to_cpu(v) (v) | |
1293 | #define cpu_to_le8(v) (v) | |
1294 | #define __le8 u8 | |
1295 | ||
1296 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
1297 | read_extent_buffer(eb, (char *)(result), \ | |
1298 | ((unsigned long)(ptr)) + \ | |
1299 | offsetof(type, member), \ | |
1300 | sizeof(((type *)0)->member))) | |
1301 | ||
1302 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1303 | write_extent_buffer(eb, (char *)(result), \ | |
1304 | ((unsigned long)(ptr)) + \ | |
1305 | offsetof(type, member), \ | |
1306 | sizeof(((type *)0)->member))) | |
1307 | ||
0f82731f | 1308 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 1309 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
1310 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
1311 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
1312 | #endif | |
5f39d397 CM |
1313 | |
1314 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1315 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1316 | { \ | |
df68b8a7 DM |
1317 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1318 | u##bits res = le##bits##_to_cpu(p->member); \ | |
1319 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 1320 | return res; \ |
5f39d397 CM |
1321 | } \ |
1322 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1323 | u##bits val) \ | |
1324 | { \ | |
df68b8a7 DM |
1325 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1326 | p->member = cpu_to_le##bits(val); \ | |
1327 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 1328 | } |
9078a3e1 | 1329 | |
5f39d397 CM |
1330 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1331 | static inline u##bits btrfs_##name(type *s) \ | |
1332 | { \ | |
1333 | return le##bits##_to_cpu(s->member); \ | |
1334 | } \ | |
1335 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1336 | { \ | |
1337 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1338 | } |
1339 | ||
0b86a832 CM |
1340 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1341 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1342 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1343 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1344 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1345 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1346 | start_offset, 64); | |
0b86a832 CM |
1347 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1348 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1349 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1350 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1351 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1352 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1353 | |
8a4b83cc CM |
1354 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1355 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1356 | total_bytes, 64); | |
1357 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1358 | bytes_used, 64); | |
1359 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1360 | io_align, 32); | |
1361 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1362 | io_width, 32); | |
1363 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1364 | sector_size, 32); | |
1365 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1366 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1367 | dev_group, 32); | |
1368 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1369 | seek_speed, 8); | |
1370 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1371 | bandwidth, 8); | |
2b82032c YZ |
1372 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1373 | generation, 64); | |
8a4b83cc | 1374 | |
0b86a832 CM |
1375 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
1376 | { | |
1377 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
1378 | } | |
1379 | ||
2b82032c YZ |
1380 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
1381 | { | |
1382 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
1383 | } | |
1384 | ||
e17cade2 | 1385 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1386 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1387 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1388 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1389 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1390 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1391 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1392 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1393 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1394 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1395 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1396 | ||
e17cade2 CM |
1397 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1398 | { | |
1399 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1400 | } | |
1401 | ||
1402 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1403 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1404 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1405 | stripe_len, 64); | |
1406 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1407 | io_align, 32); | |
1408 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1409 | io_width, 32); | |
1410 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1411 | sector_size, 32); | |
1412 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1413 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1414 | num_stripes, 16); | |
321aecc6 CM |
1415 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1416 | sub_stripes, 16); | |
0b86a832 CM |
1417 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1418 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1419 | ||
1420 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1421 | int nr) | |
1422 | { | |
1423 | unsigned long offset = (unsigned long)c; | |
1424 | offset += offsetof(struct btrfs_chunk, stripe); | |
1425 | offset += nr * sizeof(struct btrfs_stripe); | |
1426 | return (struct btrfs_stripe *)offset; | |
1427 | } | |
1428 | ||
a443755f CM |
1429 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1430 | { | |
1431 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1432 | } | |
1433 | ||
0b86a832 CM |
1434 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1435 | struct btrfs_chunk *c, int nr) | |
1436 | { | |
1437 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1438 | } | |
1439 | ||
1440 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, | |
1441 | struct btrfs_chunk *c, int nr, | |
1442 | u64 val) | |
1443 | { | |
1444 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
1445 | } | |
1446 | ||
1447 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, | |
1448 | struct btrfs_chunk *c, int nr) | |
1449 | { | |
1450 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1451 | } | |
1452 | ||
1453 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, | |
1454 | struct btrfs_chunk *c, int nr, | |
1455 | u64 val) | |
1456 | { | |
1457 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
1458 | } | |
1459 | ||
5f39d397 CM |
1460 | /* struct btrfs_block_group_item */ |
1461 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1462 | used, 64); | |
1463 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1464 | used, 64); | |
0b86a832 CM |
1465 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1466 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1467 | |
1468 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1469 | struct btrfs_block_group_item, chunk_objectid, 64); |
1470 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1471 | struct btrfs_block_group_item, flags, 64); | |
1472 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1473 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1474 | |
3954401f CM |
1475 | /* struct btrfs_inode_ref */ |
1476 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1477 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1478 | |
5f39d397 CM |
1479 | /* struct btrfs_inode_item */ |
1480 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1481 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1482 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1483 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1484 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1485 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1486 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1487 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1488 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1489 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1490 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1491 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
1e1d2701 | 1492 | |
0b86a832 | 1493 | static inline struct btrfs_timespec * |
5f39d397 | 1494 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1495 | { |
5f39d397 CM |
1496 | unsigned long ptr = (unsigned long)inode_item; |
1497 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1498 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1499 | } |
1500 | ||
0b86a832 | 1501 | static inline struct btrfs_timespec * |
5f39d397 | 1502 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1503 | { |
5f39d397 CM |
1504 | unsigned long ptr = (unsigned long)inode_item; |
1505 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1506 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1507 | } |
1508 | ||
0b86a832 | 1509 | static inline struct btrfs_timespec * |
5f39d397 | 1510 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1511 | { |
5f39d397 CM |
1512 | unsigned long ptr = (unsigned long)inode_item; |
1513 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1514 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1515 | } |
1516 | ||
0b86a832 | 1517 | static inline struct btrfs_timespec * |
5f39d397 | 1518 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1519 | { |
5f39d397 CM |
1520 | unsigned long ptr = (unsigned long)inode_item; |
1521 | ptr += offsetof(struct btrfs_inode_item, otime); | |
0b86a832 | 1522 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1523 | } |
1524 | ||
0b86a832 CM |
1525 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1526 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1527 | |
0b86a832 | 1528 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1529 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1530 | chunk_tree, 64); | |
1531 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1532 | chunk_objectid, 64); | |
1533 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1534 | chunk_offset, 64); | |
0b86a832 CM |
1535 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1536 | ||
e17cade2 CM |
1537 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1538 | { | |
1539 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1540 | return (u8 *)((unsigned long)dev + ptr); | |
1541 | } | |
1542 | ||
5d4f98a2 YZ |
1543 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1544 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1545 | generation, 64); | |
1546 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1547 | |
5d4f98a2 YZ |
1548 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1549 | ||
1550 | ||
1551 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1552 | ||
1553 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1554 | struct btrfs_tree_block_info *item, | |
1555 | struct btrfs_disk_key *key) | |
1556 | { | |
1557 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1558 | } | |
1559 | ||
1560 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1561 | struct btrfs_tree_block_info *item, | |
1562 | struct btrfs_disk_key *key) | |
1563 | { | |
1564 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1565 | } | |
e20d96d6 | 1566 | |
5d4f98a2 YZ |
1567 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1568 | root, 64); | |
1569 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1570 | objectid, 64); | |
1571 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1572 | offset, 64); | |
1573 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1574 | count, 32); | |
1575 | ||
1576 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1577 | count, 32); | |
1578 | ||
1579 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1580 | type, 8); | |
1581 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1582 | offset, 64); | |
1583 | ||
1584 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1585 | { | |
1586 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1587 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1588 | return sizeof(struct btrfs_extent_inline_ref); | |
1589 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1590 | return sizeof(struct btrfs_shared_data_ref) + | |
1591 | sizeof(struct btrfs_extent_inline_ref); | |
1592 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1593 | return sizeof(struct btrfs_extent_data_ref) + | |
1594 | offsetof(struct btrfs_extent_inline_ref, offset); | |
1595 | BUG(); | |
1596 | return 0; | |
1597 | } | |
1598 | ||
1599 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1600 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1601 | generation, 64); | |
1602 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1603 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1604 | |
5f39d397 CM |
1605 | /* struct btrfs_node */ |
1606 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1607 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1608 | |
5f39d397 | 1609 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1610 | { |
5f39d397 CM |
1611 | unsigned long ptr; |
1612 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1613 | sizeof(struct btrfs_key_ptr) * nr; | |
1614 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1615 | } |
1616 | ||
5f39d397 CM |
1617 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1618 | int nr, u64 val) | |
cf27e1ee | 1619 | { |
5f39d397 CM |
1620 | unsigned long ptr; |
1621 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1622 | sizeof(struct btrfs_key_ptr) * nr; | |
1623 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1624 | } |
1625 | ||
74493f7a CM |
1626 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1627 | { | |
1628 | unsigned long ptr; | |
1629 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1630 | sizeof(struct btrfs_key_ptr) * nr; | |
1631 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1632 | } | |
1633 | ||
1634 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1635 | int nr, u64 val) | |
1636 | { | |
1637 | unsigned long ptr; | |
1638 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1639 | sizeof(struct btrfs_key_ptr) * nr; | |
1640 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1641 | } | |
1642 | ||
810191ff | 1643 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1644 | { |
5f39d397 CM |
1645 | return offsetof(struct btrfs_node, ptrs) + |
1646 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1647 | } |
1648 | ||
e644d021 CM |
1649 | void btrfs_node_key(struct extent_buffer *eb, |
1650 | struct btrfs_disk_key *disk_key, int nr); | |
1651 | ||
5f39d397 CM |
1652 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1653 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1654 | { |
5f39d397 CM |
1655 | unsigned long ptr; |
1656 | ptr = btrfs_node_key_ptr_offset(nr); | |
1657 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1658 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1659 | } |
1660 | ||
5f39d397 CM |
1661 | /* struct btrfs_item */ |
1662 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1663 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1664 | |
5f39d397 | 1665 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1666 | { |
5f39d397 CM |
1667 | return offsetof(struct btrfs_leaf, items) + |
1668 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1669 | } |
1670 | ||
5f39d397 CM |
1671 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1672 | int nr) | |
0783fcfc | 1673 | { |
5f39d397 | 1674 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1675 | } |
1676 | ||
5f39d397 CM |
1677 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1678 | struct btrfs_item *item) | |
0783fcfc | 1679 | { |
5f39d397 | 1680 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1681 | } |
1682 | ||
5f39d397 | 1683 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1684 | { |
5f39d397 | 1685 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1686 | } |
1687 | ||
5f39d397 | 1688 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1689 | { |
5f39d397 | 1690 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1691 | } |
1692 | ||
5f39d397 | 1693 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1694 | { |
5f39d397 | 1695 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1696 | } |
1697 | ||
5f39d397 CM |
1698 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1699 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1700 | { |
5f39d397 CM |
1701 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1702 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1703 | } |
1704 | ||
5f39d397 CM |
1705 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1706 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1707 | { |
5f39d397 CM |
1708 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1709 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1710 | } |
1711 | ||
e02119d5 CM |
1712 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1713 | ||
0660b5af CM |
1714 | /* |
1715 | * struct btrfs_root_ref | |
1716 | */ | |
1717 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1718 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1719 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1720 | ||
5f39d397 | 1721 | /* struct btrfs_dir_item */ |
5103e947 | 1722 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1723 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1724 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1725 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1726 | |
5f39d397 CM |
1727 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1728 | struct btrfs_dir_item *item, | |
1729 | struct btrfs_disk_key *key) | |
1d4f6404 | 1730 | { |
5f39d397 | 1731 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1732 | } |
1733 | ||
5f39d397 CM |
1734 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1735 | struct btrfs_dir_item *item, | |
1736 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1737 | { |
5f39d397 | 1738 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1739 | } |
1740 | ||
0af3d00b JB |
1741 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1742 | num_entries, 64); | |
1743 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1744 | num_bitmaps, 64); | |
1745 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1746 | generation, 64); | |
1747 | ||
1748 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
1749 | struct btrfs_free_space_header *h, | |
1750 | struct btrfs_disk_key *key) | |
1751 | { | |
1752 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1753 | } | |
1754 | ||
1755 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
1756 | struct btrfs_free_space_header *h, | |
1757 | struct btrfs_disk_key *key) | |
1758 | { | |
1759 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1760 | } | |
1761 | ||
5f39d397 CM |
1762 | /* struct btrfs_disk_key */ |
1763 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1764 | objectid, 64); | |
1765 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1766 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1767 | |
e2fa7227 CM |
1768 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1769 | struct btrfs_disk_key *disk) | |
1770 | { | |
1771 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1772 | cpu->type = disk->type; |
e2fa7227 CM |
1773 | cpu->objectid = le64_to_cpu(disk->objectid); |
1774 | } | |
1775 | ||
1776 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1777 | struct btrfs_key *cpu) | |
1778 | { | |
1779 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1780 | disk->type = cpu->type; |
e2fa7227 CM |
1781 | disk->objectid = cpu_to_le64(cpu->objectid); |
1782 | } | |
1783 | ||
5f39d397 CM |
1784 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1785 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1786 | { |
5f39d397 CM |
1787 | struct btrfs_disk_key disk_key; |
1788 | btrfs_node_key(eb, &disk_key, nr); | |
1789 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1790 | } |
1791 | ||
5f39d397 CM |
1792 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1793 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1794 | { |
5f39d397 CM |
1795 | struct btrfs_disk_key disk_key; |
1796 | btrfs_item_key(eb, &disk_key, nr); | |
1797 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1798 | } |
1799 | ||
5f39d397 CM |
1800 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1801 | struct btrfs_dir_item *item, | |
1802 | struct btrfs_key *key) | |
4d775673 | 1803 | { |
5f39d397 CM |
1804 | struct btrfs_disk_key disk_key; |
1805 | btrfs_dir_item_key(eb, item, &disk_key); | |
1806 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1807 | } |
1808 | ||
58176a96 | 1809 | |
5f39d397 | 1810 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1811 | { |
5f39d397 | 1812 | return key->type; |
3768f368 CM |
1813 | } |
1814 | ||
5f39d397 | 1815 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1816 | { |
5f39d397 | 1817 | key->type = val; |
3768f368 CM |
1818 | } |
1819 | ||
5f39d397 | 1820 | /* struct btrfs_header */ |
db94535d | 1821 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1822 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1823 | generation, 64); | |
1824 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1825 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1826 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1827 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1828 | |
63b10fc4 CM |
1829 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1830 | { | |
1831 | return (btrfs_header_flags(eb) & flag) == flag; | |
1832 | } | |
1833 | ||
1834 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1835 | { | |
1836 | u64 flags = btrfs_header_flags(eb); | |
1837 | btrfs_set_header_flags(eb, flags | flag); | |
1838 | return (flags & flag) == flag; | |
1839 | } | |
1840 | ||
1841 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1842 | { | |
1843 | u64 flags = btrfs_header_flags(eb); | |
1844 | btrfs_set_header_flags(eb, flags & ~flag); | |
1845 | return (flags & flag) == flag; | |
1846 | } | |
1847 | ||
5d4f98a2 YZ |
1848 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
1849 | { | |
1850 | u64 flags = btrfs_header_flags(eb); | |
1851 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
1852 | } | |
1853 | ||
1854 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
1855 | int rev) | |
1856 | { | |
1857 | u64 flags = btrfs_header_flags(eb); | |
1858 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
1859 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
1860 | btrfs_set_header_flags(eb, flags); | |
1861 | } | |
1862 | ||
5f39d397 | 1863 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1864 | { |
5f39d397 CM |
1865 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1866 | return (u8 *)ptr; | |
0f7d52f4 CM |
1867 | } |
1868 | ||
e17cade2 CM |
1869 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1870 | { | |
1871 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1872 | return (u8 *)ptr; | |
1873 | } | |
1874 | ||
5f39d397 | 1875 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 1876 | { |
5f39d397 CM |
1877 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
1878 | return (u8 *)ptr; | |
3768f368 CM |
1879 | } |
1880 | ||
5f39d397 | 1881 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 1882 | { |
5f39d397 CM |
1883 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
1884 | return (u8 *)ptr; | |
3768f368 CM |
1885 | } |
1886 | ||
5f39d397 | 1887 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 1888 | { |
5f39d397 | 1889 | return NULL; |
3768f368 CM |
1890 | } |
1891 | ||
5f39d397 | 1892 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 1893 | { |
5f39d397 | 1894 | return NULL; |
3768f368 CM |
1895 | } |
1896 | ||
5f39d397 | 1897 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 1898 | { |
5f39d397 | 1899 | return NULL; |
3768f368 CM |
1900 | } |
1901 | ||
5f39d397 | 1902 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1903 | { |
d397712b | 1904 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
1905 | } |
1906 | ||
5f39d397 | 1907 | /* struct btrfs_root_item */ |
84234f3a YZ |
1908 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
1909 | generation, 64); | |
5f39d397 | 1910 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
1911 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1912 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1913 | |
84234f3a YZ |
1914 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
1915 | generation, 64); | |
db94535d CM |
1916 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1917 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1918 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1919 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 1920 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
1921 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1922 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
1923 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
1924 | last_snapshot, 64); | |
123abc88 | 1925 | |
b83cc969 LZ |
1926 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
1927 | { | |
1928 | return root->root_item.flags & BTRFS_ROOT_SUBVOL_RDONLY; | |
1929 | } | |
1930 | ||
5f39d397 | 1931 | /* struct btrfs_super_block */ |
607d432d | 1932 | |
db94535d | 1933 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1934 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1935 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1936 | generation, 64); | |
1937 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1938 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1939 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
1940 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
1941 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
1942 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1943 | root_level, 8); | |
0b86a832 CM |
1944 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1945 | chunk_root, 64); | |
1946 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
1947 | chunk_root_level, 8); |
1948 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
1949 | log_root, 64); | |
c3027eb5 CM |
1950 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
1951 | log_root_transid, 64); | |
e02119d5 CM |
1952 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
1953 | log_root_level, 8); | |
db94535d CM |
1954 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1955 | total_bytes, 64); | |
1956 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1957 | bytes_used, 64); | |
5f39d397 CM |
1958 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1959 | sectorsize, 32); | |
1960 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1961 | nodesize, 32); | |
1962 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1963 | leafsize, 32); | |
87ee04eb CM |
1964 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1965 | stripesize, 32); | |
5f39d397 CM |
1966 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1967 | root_dir_objectid, 64); | |
8a4b83cc CM |
1968 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1969 | num_devices, 64); | |
f2b636e8 JB |
1970 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
1971 | compat_flags, 64); | |
1972 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 1973 | compat_ro_flags, 64); |
f2b636e8 JB |
1974 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
1975 | incompat_flags, 64); | |
607d432d JB |
1976 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
1977 | csum_type, 16); | |
0af3d00b JB |
1978 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
1979 | cache_generation, 64); | |
607d432d JB |
1980 | |
1981 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
1982 | { | |
1983 | int t = btrfs_super_csum_type(s); | |
1984 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); | |
1985 | return btrfs_csum_sizes[t]; | |
1986 | } | |
2e635a27 | 1987 | |
5f39d397 | 1988 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 1989 | { |
5f39d397 | 1990 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
1991 | } |
1992 | ||
5f39d397 CM |
1993 | /* struct btrfs_file_extent_item */ |
1994 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 1995 | |
d397712b CM |
1996 | static inline unsigned long |
1997 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 1998 | { |
5f39d397 | 1999 | unsigned long offset = (unsigned long)e; |
db94535d | 2000 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 2001 | return offset; |
236454df CM |
2002 | } |
2003 | ||
2004 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2005 | { | |
db94535d | 2006 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
2007 | } |
2008 | ||
db94535d CM |
2009 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2010 | disk_bytenr, 64); | |
5f39d397 CM |
2011 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2012 | generation, 64); | |
db94535d CM |
2013 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2014 | disk_num_bytes, 64); | |
5f39d397 CM |
2015 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2016 | offset, 64); | |
db94535d CM |
2017 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2018 | num_bytes, 64); | |
c8b97818 CM |
2019 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2020 | ram_bytes, 64); | |
2021 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2022 | compression, 8); | |
2023 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2024 | encryption, 8); | |
2025 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2026 | other_encoding, 16); | |
2027 | ||
2028 | /* this returns the number of file bytes represented by the inline item. | |
2029 | * If an item is compressed, this is the uncompressed size | |
2030 | */ | |
2031 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2032 | struct btrfs_file_extent_item *e) | |
2033 | { | |
2034 | return btrfs_file_extent_ram_bytes(eb, e); | |
2035 | } | |
2036 | ||
2037 | /* | |
2038 | * this returns the number of bytes used by the item on disk, minus the | |
2039 | * size of any extent headers. If a file is compressed on disk, this is | |
2040 | * the compressed size | |
2041 | */ | |
2042 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2043 | struct btrfs_item *e) | |
2044 | { | |
2045 | unsigned long offset; | |
2046 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
2047 | return btrfs_item_size(eb, e) - offset; | |
2048 | } | |
9f5fae2f | 2049 | |
e20d96d6 CM |
2050 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
2051 | { | |
2052 | return sb->s_fs_info; | |
2053 | } | |
2054 | ||
58176a96 JB |
2055 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
2056 | const char *name, int len) | |
2057 | { | |
2058 | /* if we already have a name just free it */ | |
d397712b | 2059 | kfree(root->name); |
58176a96 JB |
2060 | |
2061 | root->name = kmalloc(len+1, GFP_KERNEL); | |
2062 | if (!root->name) | |
2063 | return -ENOMEM; | |
2064 | ||
2065 | memcpy(root->name, name, len); | |
d397712b | 2066 | root->name[len] = '\0'; |
58176a96 JB |
2067 | |
2068 | return 0; | |
2069 | } | |
2070 | ||
d397712b CM |
2071 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
2072 | { | |
db94535d CM |
2073 | if (level == 0) |
2074 | return root->leafsize; | |
2075 | return root->nodesize; | |
2076 | } | |
2077 | ||
4beb1b8b CM |
2078 | /* helper function to cast into the data area of the leaf. */ |
2079 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 2080 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
2081 | btrfs_item_offset_nr(leaf, slot))) |
2082 | ||
2083 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
2084 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
2085 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 2086 | |
2b1f55b0 CM |
2087 | static inline struct dentry *fdentry(struct file *file) |
2088 | { | |
6da6abae | 2089 | return file->f_path.dentry; |
6da6abae CM |
2090 | } |
2091 | ||
67377734 JB |
2092 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2093 | { | |
2094 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2095 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2096 | } | |
2097 | ||
b18c6685 | 2098 | /* extent-tree.c */ |
fa9c0d79 | 2099 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
2100 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
2101 | struct btrfs_root *root, unsigned long count); | |
31840ae1 | 2102 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
2103 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2104 | struct btrfs_root *root, u64 bytenr, | |
2105 | u64 num_bytes, u64 *refs, u64 *flags); | |
11833d66 YZ |
2106 | int btrfs_pin_extent(struct btrfs_root *root, |
2107 | u64 bytenr, u64 num, int reserved); | |
e02119d5 CM |
2108 | int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans, |
2109 | struct btrfs_root *root, struct extent_buffer *leaf); | |
80ff3856 | 2110 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2111 | struct btrfs_root *root, |
2112 | u64 objectid, u64 offset, u64 bytenr); | |
d1310b2e | 2113 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); |
d397712b CM |
2114 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2115 | struct btrfs_fs_info *info, | |
2116 | u64 bytenr); | |
5d4f98a2 | 2117 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
d2fb3437 YZ |
2118 | u64 btrfs_find_block_group(struct btrfs_root *root, |
2119 | u64 search_start, u64 search_hint, int owner); | |
5f39d397 | 2120 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2121 | struct btrfs_root *root, u32 blocksize, |
2122 | u64 parent, u64 root_objectid, | |
2123 | struct btrfs_disk_key *key, int level, | |
2124 | u64 hint, u64 empty_size); | |
f0486c68 YZ |
2125 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2126 | struct btrfs_root *root, | |
2127 | struct extent_buffer *buf, | |
2128 | u64 parent, int last_ref); | |
65b51a00 CM |
2129 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
2130 | struct btrfs_root *root, | |
4008c04a CM |
2131 | u64 bytenr, u32 blocksize, |
2132 | int level); | |
5d4f98a2 YZ |
2133 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
2134 | struct btrfs_root *root, | |
2135 | u64 root_objectid, u64 owner, | |
2136 | u64 offset, struct btrfs_key *ins); | |
2137 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, | |
2138 | struct btrfs_root *root, | |
2139 | u64 root_objectid, u64 owner, u64 offset, | |
2140 | struct btrfs_key *ins); | |
e6dcd2dc CM |
2141 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
2142 | struct btrfs_root *root, | |
2143 | u64 num_bytes, u64 min_alloc_size, | |
2144 | u64 empty_size, u64 hint_byte, | |
2145 | u64 search_end, struct btrfs_key *ins, | |
2146 | u64 data); | |
e089f05c | 2147 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
5d4f98a2 YZ |
2148 | struct extent_buffer *buf, int full_backref); |
2149 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
2150 | struct extent_buffer *buf, int full_backref); | |
2151 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, | |
2152 | struct btrfs_root *root, | |
2153 | u64 bytenr, u64 num_bytes, u64 flags, | |
2154 | int is_data); | |
31840ae1 ZY |
2155 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
2156 | struct btrfs_root *root, | |
2157 | u64 bytenr, u64 num_bytes, u64 parent, | |
5d4f98a2 YZ |
2158 | u64 root_objectid, u64 owner, u64 offset); |
2159 | ||
65b51a00 | 2160 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
11833d66 YZ |
2161 | int btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
2162 | struct btrfs_root *root); | |
ccd467d6 | 2163 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 2164 | struct btrfs_root *root); |
b18c6685 | 2165 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
2166 | struct btrfs_root *root, |
2167 | u64 bytenr, u64 num_bytes, u64 parent, | |
5d4f98a2 YZ |
2168 | u64 root_objectid, u64 owner, u64 offset); |
2169 | ||
9078a3e1 CM |
2170 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2171 | struct btrfs_root *root); | |
d2fb3437 | 2172 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
2173 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
2174 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 2175 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
2176 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
2177 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 2178 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 2179 | u64 size); |
1a40e23b ZY |
2180 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
2181 | struct btrfs_root *root, u64 group_start); | |
2b82032c | 2182 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
6d07bcec | 2183 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
6a63209f | 2184 | void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde); |
4184ea7f | 2185 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
0ca1f7ce YZ |
2186 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes); |
2187 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); | |
a22285a6 YZ |
2188 | int btrfs_trans_reserve_metadata(struct btrfs_trans_handle *trans, |
2189 | struct btrfs_root *root, | |
8bb8ab2e | 2190 | int num_items); |
a22285a6 YZ |
2191 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
2192 | struct btrfs_root *root); | |
d68fc57b YZ |
2193 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
2194 | struct inode *inode); | |
2195 | void btrfs_orphan_release_metadata(struct inode *inode); | |
a22285a6 YZ |
2196 | int btrfs_snap_reserve_metadata(struct btrfs_trans_handle *trans, |
2197 | struct btrfs_pending_snapshot *pending); | |
0ca1f7ce YZ |
2198 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
2199 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
2200 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); | |
2201 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); | |
f0486c68 YZ |
2202 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv); |
2203 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root); | |
2204 | void btrfs_free_block_rsv(struct btrfs_root *root, | |
2205 | struct btrfs_block_rsv *rsv); | |
2206 | void btrfs_add_durable_block_rsv(struct btrfs_fs_info *fs_info, | |
2207 | struct btrfs_block_rsv *rsv); | |
2208 | int btrfs_block_rsv_add(struct btrfs_trans_handle *trans, | |
2209 | struct btrfs_root *root, | |
2210 | struct btrfs_block_rsv *block_rsv, | |
8bb8ab2e | 2211 | u64 num_bytes); |
f0486c68 YZ |
2212 | int btrfs_block_rsv_check(struct btrfs_trans_handle *trans, |
2213 | struct btrfs_root *root, | |
2214 | struct btrfs_block_rsv *block_rsv, | |
2215 | u64 min_reserved, int min_factor); | |
2216 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, | |
2217 | struct btrfs_block_rsv *dst_rsv, | |
2218 | u64 num_bytes); | |
2219 | void btrfs_block_rsv_release(struct btrfs_root *root, | |
2220 | struct btrfs_block_rsv *block_rsv, | |
2221 | u64 num_bytes); | |
2222 | int btrfs_set_block_group_ro(struct btrfs_root *root, | |
2223 | struct btrfs_block_group_cache *cache); | |
2224 | int btrfs_set_block_group_rw(struct btrfs_root *root, | |
2225 | struct btrfs_block_group_cache *cache); | |
0af3d00b | 2226 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2227 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 2228 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
2229 | u64 start, u64 end); | |
2230 | int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, | |
2231 | u64 num_bytes); | |
c87f08ca CM |
2232 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
2233 | struct btrfs_root *root, u64 type); | |
acce952b | 2234 | |
dee26a9f | 2235 | /* ctree.c */ |
5d4f98a2 YZ |
2236 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
2237 | int level, int *slot); | |
2238 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
2239 | int btrfs_previous_item(struct btrfs_root *root, |
2240 | struct btrfs_path *path, u64 min_objectid, | |
2241 | int type); | |
31840ae1 ZY |
2242 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
2243 | struct btrfs_root *root, struct btrfs_path *path, | |
2244 | struct btrfs_key *new_key); | |
925baedd CM |
2245 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2246 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 2247 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
2248 | struct btrfs_key *key, int lowest_level, |
2249 | int cache_only, u64 min_trans); | |
2250 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 2251 | struct btrfs_key *max_key, |
3f157a2f CM |
2252 | struct btrfs_path *path, int cache_only, |
2253 | u64 min_trans); | |
5f39d397 CM |
2254 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2255 | struct btrfs_root *root, struct extent_buffer *buf, | |
2256 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2257 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2258 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2259 | struct btrfs_root *root, | |
2260 | struct extent_buffer *buf, | |
2261 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2262 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2263 | struct extent_buffer *buf); | |
6567e837 CM |
2264 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2265 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
2266 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
2267 | struct btrfs_root *root, | |
2268 | struct btrfs_path *path, | |
179e29e4 | 2269 | u32 new_size, int from_end); |
459931ec CM |
2270 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2271 | struct btrfs_root *root, | |
2272 | struct btrfs_path *path, | |
2273 | struct btrfs_key *new_key, | |
2274 | unsigned long split_offset); | |
ad48fd75 YZ |
2275 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2276 | struct btrfs_root *root, | |
2277 | struct btrfs_path *path, | |
2278 | struct btrfs_key *new_key); | |
e089f05c CM |
2279 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
2280 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
2281 | ins_len, int cow); | |
6702ed49 | 2282 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2283 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
2284 | int start_slot, int cache_only, u64 *last_ret, |
2285 | struct btrfs_key *progress); | |
234b63a0 | 2286 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
2287 | struct btrfs_path *btrfs_alloc_path(void); |
2288 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2289 | void btrfs_set_path_blocking(struct btrfs_path *p); |
b4ce94de CM |
2290 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2291 | ||
85e21bac CM |
2292 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2293 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2294 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2295 | struct btrfs_root *root, | |
2296 | struct btrfs_path *path) | |
2297 | { | |
2298 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2299 | } | |
2300 | ||
e089f05c CM |
2301 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2302 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
f3465ca4 JB |
2303 | int btrfs_insert_some_items(struct btrfs_trans_handle *trans, |
2304 | struct btrfs_root *root, | |
2305 | struct btrfs_path *path, | |
2306 | struct btrfs_key *cpu_key, u32 *data_size, | |
2307 | int nr); | |
9c58309d CM |
2308 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2309 | struct btrfs_root *root, | |
2310 | struct btrfs_path *path, | |
2311 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
2312 | ||
2313 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2314 | struct btrfs_root *root, | |
2315 | struct btrfs_path *path, | |
2316 | struct btrfs_key *key, | |
2317 | u32 data_size) | |
2318 | { | |
2319 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2320 | } | |
2321 | ||
234b63a0 | 2322 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 2323 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 2324 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
3fd0a558 YZ |
2325 | int btrfs_drop_snapshot(struct btrfs_root *root, |
2326 | struct btrfs_block_rsv *block_rsv, int update_ref); | |
f82d02d9 YZ |
2327 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2328 | struct btrfs_root *root, | |
2329 | struct extent_buffer *node, | |
2330 | struct extent_buffer *parent); | |
dee26a9f | 2331 | /* root-item.c */ |
ea9e8b11 | 2332 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
4df27c4d YZ |
2333 | struct btrfs_path *path, |
2334 | u64 root_id, u64 ref_id); | |
0660b5af CM |
2335 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
2336 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
2337 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
2338 | const char *name, int name_len); | |
2339 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
2340 | struct btrfs_root *tree_root, | |
2341 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 2342 | const char *name, int name_len); |
e089f05c CM |
2343 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2344 | struct btrfs_key *key); | |
2345 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2346 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2347 | *item); | |
2348 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2349 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2350 | *item); | |
2351 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
2352 | btrfs_root_item *item, struct btrfs_key *key); | |
bf4ef679 CM |
2353 | int btrfs_search_root(struct btrfs_root *root, u64 search_start, |
2354 | u64 *found_objectid); | |
5d4f98a2 | 2355 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid); |
76dda93c | 2356 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
5d4f98a2 YZ |
2357 | int btrfs_set_root_node(struct btrfs_root_item *item, |
2358 | struct extent_buffer *node); | |
dee26a9f | 2359 | /* dir-item.c */ |
d397712b CM |
2360 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
2361 | struct btrfs_root *root, const char *name, | |
2362 | int name_len, u64 dir, | |
aec7477b | 2363 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
2364 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
2365 | struct btrfs_root *root, | |
2366 | struct btrfs_path *path, u64 dir, | |
2367 | const char *name, int name_len, | |
2368 | int mod); | |
2369 | struct btrfs_dir_item * | |
2370 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
2371 | struct btrfs_root *root, | |
2372 | struct btrfs_path *path, u64 dir, | |
2373 | u64 objectid, const char *name, int name_len, | |
2374 | int mod); | |
4df27c4d YZ |
2375 | struct btrfs_dir_item * |
2376 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
2377 | struct btrfs_path *path, u64 dirid, | |
2378 | const char *name, int name_len); | |
7e38180e CM |
2379 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
2380 | struct btrfs_path *path, | |
7f5c1516 | 2381 | const char *name, int name_len); |
7e38180e CM |
2382 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
2383 | struct btrfs_root *root, | |
2384 | struct btrfs_path *path, | |
2385 | struct btrfs_dir_item *di); | |
5103e947 | 2386 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
2387 | struct btrfs_root *root, |
2388 | struct btrfs_path *path, u64 objectid, | |
2389 | const char *name, u16 name_len, | |
2390 | const void *data, u16 data_len); | |
5103e947 JB |
2391 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
2392 | struct btrfs_root *root, | |
2393 | struct btrfs_path *path, u64 dir, | |
2394 | const char *name, u16 name_len, | |
2395 | int mod); | |
7b128766 JB |
2396 | |
2397 | /* orphan.c */ | |
2398 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
2399 | struct btrfs_root *root, u64 offset); | |
2400 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
2401 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 2402 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 2403 | |
dee26a9f | 2404 | /* inode-map.c */ |
9f5fae2f CM |
2405 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
2406 | struct btrfs_root *fs_root, | |
2407 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
2408 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
2409 | ||
dee26a9f | 2410 | /* inode-item.c */ |
3954401f CM |
2411 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
2412 | struct btrfs_root *root, | |
2413 | const char *name, int name_len, | |
aec7477b | 2414 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
2415 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
2416 | struct btrfs_root *root, | |
2417 | const char *name, int name_len, | |
aec7477b | 2418 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
a22285a6 YZ |
2419 | struct btrfs_inode_ref * |
2420 | btrfs_lookup_inode_ref(struct btrfs_trans_handle *trans, | |
2421 | struct btrfs_root *root, | |
2422 | struct btrfs_path *path, | |
2423 | const char *name, int name_len, | |
2424 | u64 inode_objectid, u64 ref_objectid, int mod); | |
5f39d397 CM |
2425 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
2426 | struct btrfs_root *root, | |
2427 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 2428 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
2429 | *root, struct btrfs_path *path, |
2430 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
2431 | |
2432 | /* file-item.c */ | |
459931ec CM |
2433 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
2434 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 2435 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2436 | struct bio *bio, u32 *dst); |
4b46fce2 JB |
2437 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
2438 | struct bio *bio, u64 logical_offset, u32 *dst); | |
b18c6685 | 2439 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
2440 | struct btrfs_root *root, |
2441 | u64 objectid, u64 pos, | |
2442 | u64 disk_offset, u64 disk_num_bytes, | |
2443 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
2444 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
2445 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
2446 | struct btrfs_root *root, | |
2447 | struct btrfs_path *path, u64 objectid, | |
db94535d | 2448 | u64 bytenr, int mod); |
065631f6 | 2449 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 2450 | struct btrfs_root *root, |
e6dcd2dc | 2451 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 2452 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2453 | struct bio *bio, u64 file_start, int contig); |
c8b97818 CM |
2454 | int btrfs_csum_file_bytes(struct btrfs_root *root, struct inode *inode, |
2455 | u64 start, unsigned long len); | |
b18c6685 CM |
2456 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
2457 | struct btrfs_root *root, | |
2458 | struct btrfs_path *path, | |
d20f7043 | 2459 | u64 bytenr, int cow); |
1de037a4 CM |
2460 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
2461 | struct btrfs_root *root, struct btrfs_path *path, | |
2462 | u64 isize); | |
17d217fe YZ |
2463 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, |
2464 | u64 end, struct list_head *list); | |
39279cc3 | 2465 | /* inode.c */ |
4881ee5a CM |
2466 | |
2467 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 2468 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
2469 | #define ClearPageChecked ClearPageFsMisc |
2470 | #define SetPageChecked SetPageFsMisc | |
2471 | #define PageChecked PageFsMisc | |
2472 | #endif | |
2473 | ||
3de4586c CM |
2474 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
2475 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
2476 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
2477 | struct btrfs_root *root, | |
2478 | struct inode *dir, struct inode *inode, | |
2479 | const char *name, int name_len); | |
2480 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
2481 | struct inode *parent_inode, struct inode *inode, | |
2482 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
2483 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
2484 | struct btrfs_root *root, | |
2485 | struct inode *dir, u64 objectid, | |
2486 | const char *name, int name_len); | |
e02119d5 CM |
2487 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
2488 | struct btrfs_root *root, | |
2489 | struct inode *inode, u64 new_size, | |
2490 | u32 min_type); | |
2491 | ||
24bbcf04 | 2492 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
0019f10d JB |
2493 | int btrfs_start_one_delalloc_inode(struct btrfs_root *root, int delay_iput, |
2494 | int sync); | |
2ac55d41 JB |
2495 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
2496 | struct extent_state **cached_state); | |
f421950f CM |
2497 | int btrfs_writepages(struct address_space *mapping, |
2498 | struct writeback_control *wbc); | |
d2fb3437 | 2499 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
76dda93c | 2500 | struct btrfs_root *new_root, |
d2fb3437 | 2501 | u64 new_dirid, u64 alloc_hint); |
239b14b3 | 2502 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 2503 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 2504 | |
edbd8d4e CM |
2505 | unsigned long btrfs_force_ra(struct address_space *mapping, |
2506 | struct file_ra_state *ra, struct file *file, | |
2507 | pgoff_t offset, pgoff_t last_index); | |
c2ec175c | 2508 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 2509 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 2510 | void btrfs_evict_inode(struct inode *inode); |
2da98f00 | 2511 | void btrfs_put_inode(struct inode *inode); |
a9185b41 | 2512 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
2513 | void btrfs_dirty_inode(struct inode *inode); |
2514 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
2515 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 2516 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
2517 | int btrfs_init_cachep(void); |
2518 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 2519 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 2520 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 2521 | struct btrfs_root *root, int *was_new); |
39279cc3 CM |
2522 | int btrfs_commit_write(struct file *file, struct page *page, |
2523 | unsigned from, unsigned to); | |
a52d9a80 CM |
2524 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
2525 | size_t page_offset, u64 start, u64 end, | |
2526 | int create); | |
2527 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
2528 | struct btrfs_root *root, | |
2529 | struct inode *inode); | |
5b21f2ed ZY |
2530 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
2531 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
66b4ffd1 | 2532 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
2533 | void btrfs_orphan_pre_snapshot(struct btrfs_trans_handle *trans, |
2534 | struct btrfs_pending_snapshot *pending, | |
2535 | u64 *bytes_to_reserve); | |
2536 | void btrfs_orphan_post_snapshot(struct btrfs_trans_handle *trans, | |
2537 | struct btrfs_pending_snapshot *pending); | |
2538 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, | |
2539 | struct btrfs_root *root); | |
a41ad394 | 2540 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
76dda93c | 2541 | int btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
2542 | void btrfs_add_delayed_iput(struct inode *inode); |
2543 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
2544 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
2545 | u64 start, u64 num_bytes, u64 min_size, | |
2546 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
2547 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
2548 | struct btrfs_trans_handle *trans, int mode, | |
2549 | u64 start, u64 num_bytes, u64 min_size, | |
2550 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 2551 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
2552 | |
2553 | /* ioctl.c */ | |
2554 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
6cbff00f CH |
2555 | void btrfs_update_iflags(struct inode *inode); |
2556 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
f46b5a66 | 2557 | |
39279cc3 | 2558 | /* file.c */ |
7ea80859 | 2559 | int btrfs_sync_file(struct file *file, int datasync); |
5b21f2ed ZY |
2560 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
2561 | int skip_pinned); | |
5f56406a | 2562 | int btrfs_check_file(struct btrfs_root *root, struct inode *inode); |
828c0950 | 2563 | extern const struct file_operations btrfs_file_operations; |
920bbbfb YZ |
2564 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode, |
2565 | u64 start, u64 end, u64 *hint_byte, int drop_cache); | |
d899e052 | 2566 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 2567 | struct inode *inode, u64 start, u64 end); |
6bf13c0c SW |
2568 | int btrfs_release_file(struct inode *inode, struct file *file); |
2569 | ||
6702ed49 CM |
2570 | /* tree-defrag.c */ |
2571 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
2572 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
2573 | |
2574 | /* sysfs.c */ | |
2575 | int btrfs_init_sysfs(void); | |
2576 | void btrfs_exit_sysfs(void); | |
2577 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
2578 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
2579 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
2580 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
2581 | ||
5103e947 JB |
2582 | /* xattr.c */ |
2583 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 2584 | |
edbd8d4e | 2585 | /* super.c */ |
edf24abe | 2586 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 2587 | int btrfs_sync_fs(struct super_block *sb, int wait); |
acce952b | 2588 | void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, |
2589 | unsigned int line, int errno); | |
2590 | ||
2591 | #define btrfs_std_error(fs_info, errno) \ | |
2592 | do { \ | |
2593 | if ((errno)) \ | |
2594 | __btrfs_std_error((fs_info), __func__, __LINE__, (errno));\ | |
2595 | } while (0) | |
33268eaf JB |
2596 | |
2597 | /* acl.c */ | |
0eda294d | 2598 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
b74c79e9 | 2599 | int btrfs_check_acl(struct inode *inode, int mask, unsigned int flags); |
7df336ec AV |
2600 | #else |
2601 | #define btrfs_check_acl NULL | |
2602 | #endif | |
f34f57a3 YZ |
2603 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
2604 | struct inode *inode, struct inode *dir); | |
33268eaf | 2605 | int btrfs_acl_chmod(struct inode *inode); |
0f9dd46c | 2606 | |
5d4f98a2 YZ |
2607 | /* relocation.c */ |
2608 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
2609 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
2610 | struct btrfs_root *root); | |
2611 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
2612 | struct btrfs_root *root); | |
2613 | int btrfs_recover_relocation(struct btrfs_root *root); | |
2614 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
3fd0a558 YZ |
2615 | void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
2616 | struct btrfs_root *root, struct extent_buffer *buf, | |
2617 | struct extent_buffer *cow); | |
2618 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, | |
2619 | struct btrfs_pending_snapshot *pending, | |
2620 | u64 *bytes_to_reserve); | |
2621 | void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, | |
2622 | struct btrfs_pending_snapshot *pending); | |
eb60ceac | 2623 | #endif |