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btrfs: pass root to various extent ref mod functions
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CommitLineData
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
810191ff 22#include <linux/mm.h>
174cd4b1 23#include <linux/sched/signal.h>
810191ff 24#include <linux/highmem.h>
e20d96d6 25#include <linux/fs.h>
a2de733c 26#include <linux/rwsem.h>
803b2f54 27#include <linux/semaphore.h>
58176a96 28#include <linux/completion.h>
04160088 29#include <linux/backing-dev.h>
e6dcd2dc 30#include <linux/wait.h>
5a0e3ad6 31#include <linux/slab.h>
f8b18087 32#include <linux/kobject.h>
1abe9b8a 33#include <trace/events/btrfs.h>
479965d6 34#include <asm/kmap_types.h>
3b16a4e3 35#include <linux/pagemap.h>
55e301fd 36#include <linux/btrfs.h>
db671160 37#include <linux/btrfs_tree.h>
21c7e756 38#include <linux/workqueue.h>
f667aef6 39#include <linux/security.h>
ee22184b 40#include <linux/sizes.h>
897a41b1 41#include <linux/dynamic_debug.h>
1e4f4714 42#include <linux/refcount.h>
d1310b2e 43#include "extent_io.h"
5f39d397 44#include "extent_map.h"
8b712842 45#include "async-thread.h"
e20d96d6 46
e089f05c 47struct btrfs_trans_handle;
79154b1b 48struct btrfs_transaction;
a22285a6 49struct btrfs_pending_snapshot;
35b7e476 50extern struct kmem_cache *btrfs_trans_handle_cachep;
35b7e476 51extern struct kmem_cache *btrfs_bit_radix_cachep;
2c90e5d6 52extern struct kmem_cache *btrfs_path_cachep;
dc89e982 53extern struct kmem_cache *btrfs_free_space_cachep;
e6dcd2dc 54struct btrfs_ordered_sum;
e089f05c 55
294e30fe
JB
56#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
57#define STATIC noinline
58#else
59#define STATIC static noinline
60#endif
61
cdb4c574 62#define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */
eb60ceac 63
72d7aefc 64#define BTRFS_MAX_MIRRORS 3
94598ba8 65
4008c04a 66#define BTRFS_MAX_LEVEL 8
0b86a832 67
5d4f98a2
YZ
68#define BTRFS_COMPAT_EXTENT_TREE_V0
69
727011e0
CM
70/*
71 * the max metadata block size. This limit is somewhat artificial,
72 * but the memmove costs go through the roof for larger blocks.
73 */
74#define BTRFS_MAX_METADATA_BLOCKSIZE 65536
75
e20d96d6
CM
76/*
77 * we can actually store much bigger names, but lets not confuse the rest
78 * of linux
79 */
80#define BTRFS_NAME_LEN 255
81
f186373f
MF
82/*
83 * Theoretical limit is larger, but we keep this down to a sane
84 * value. That should limit greatly the possibility of collisions on
85 * inode ref items.
86 */
87#define BTRFS_LINK_MAX 65535U
88
4d4ab6d6 89static const int btrfs_csum_sizes[] = { 4 };
607d432d 90
509659cd 91/* four bytes for CRC32 */
3954401f 92#define BTRFS_EMPTY_DIR_SIZE 0
f254e52c 93
3d136a11
SB
94/* ioprio of readahead is set to idle */
95#define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0))
96
ee22184b 97#define BTRFS_DIRTY_METADATA_THRESH SZ_32M
e2d84521 98
ee22184b 99#define BTRFS_MAX_EXTENT_SIZE SZ_128M
dcab6a3b 100
823bb20a
DS
101/*
102 * Count how many BTRFS_MAX_EXTENT_SIZE cover the @size
103 */
104static inline u32 count_max_extents(u64 size)
105{
106 return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE);
107}
108
0b86a832
CM
109struct btrfs_mapping_tree {
110 struct extent_map_tree map_tree;
111};
112
0b86a832
CM
113static inline unsigned long btrfs_chunk_item_size(int num_stripes)
114{
115 BUG_ON(num_stripes == 0);
116 return sizeof(struct btrfs_chunk) +
117 sizeof(struct btrfs_stripe) * (num_stripes - 1);
118}
119
acce952b 120/*
121 * File system states
122 */
87533c47 123#define BTRFS_FS_STATE_ERROR 0
dc81cdc5 124#define BTRFS_FS_STATE_REMOUNTING 1
08748810 125#define BTRFS_FS_STATE_TRANS_ABORTED 2
c404e0dc 126#define BTRFS_FS_STATE_DEV_REPLACING 3
7c0260ee 127#define BTRFS_FS_STATE_DUMMY_FS_INFO 4
acce952b 128
5d4f98a2
YZ
129#define BTRFS_BACKREF_REV_MAX 256
130#define BTRFS_BACKREF_REV_SHIFT 56
131#define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \
132 BTRFS_BACKREF_REV_SHIFT)
133
134#define BTRFS_OLD_BACKREF_REV 0
135#define BTRFS_MIXED_BACKREF_REV 1
63b10fc4 136
fec577fb
CM
137/*
138 * every tree block (leaf or node) starts with this header.
139 */
bb492bb0 140struct btrfs_header {
e17cade2 141 /* these first four must match the super block */
f254e52c 142 u8 csum[BTRFS_CSUM_SIZE];
5f39d397 143 u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
db94535d 144 __le64 bytenr; /* which block this node is supposed to live in */
63b10fc4 145 __le64 flags;
e17cade2
CM
146
147 /* allowed to be different from the super from here on down */
148 u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
7f5c1516 149 __le64 generation;
4d775673 150 __le64 owner;
5f39d397 151 __le32 nritems;
9a6f11ed 152 u8 level;
eb60ceac
CM
153} __attribute__ ((__packed__));
154
0b86a832
CM
155/*
156 * this is a very generous portion of the super block, giving us
157 * room to translate 14 chunks with 3 stripes each.
158 */
159#define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048
160
af31f5e5
CM
161/*
162 * just in case we somehow lose the roots and are not able to mount,
163 * we store an array of the roots from previous transactions
164 * in the super.
165 */
166#define BTRFS_NUM_BACKUP_ROOTS 4
167struct btrfs_root_backup {
168 __le64 tree_root;
169 __le64 tree_root_gen;
170
171 __le64 chunk_root;
172 __le64 chunk_root_gen;
173
174 __le64 extent_root;
175 __le64 extent_root_gen;
176
177 __le64 fs_root;
178 __le64 fs_root_gen;
179
180 __le64 dev_root;
181 __le64 dev_root_gen;
182
183 __le64 csum_root;
184 __le64 csum_root_gen;
185
186 __le64 total_bytes;
187 __le64 bytes_used;
188 __le64 num_devices;
189 /* future */
d1423248 190 __le64 unused_64[4];
af31f5e5
CM
191
192 u8 tree_root_level;
193 u8 chunk_root_level;
194 u8 extent_root_level;
195 u8 fs_root_level;
196 u8 dev_root_level;
197 u8 csum_root_level;
198 /* future and to align */
199 u8 unused_8[10];
200} __attribute__ ((__packed__));
201
fec577fb
CM
202/*
203 * the super block basically lists the main trees of the FS
204 * it currently lacks any block count etc etc
205 */
234b63a0 206struct btrfs_super_block {
f254e52c 207 u8 csum[BTRFS_CSUM_SIZE];
63b10fc4 208 /* the first 4 fields must match struct btrfs_header */
2b82032c 209 u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
db94535d 210 __le64 bytenr; /* this block number */
63b10fc4 211 __le64 flags;
e17cade2
CM
212
213 /* allowed to be different from the btrfs_header from here own down */
3768f368 214 __le64 magic;
3768f368
CM
215 __le64 generation;
216 __le64 root;
0b86a832 217 __le64 chunk_root;
e02119d5 218 __le64 log_root;
c3027eb5
CM
219
220 /* this will help find the new super based on the log root */
221 __le64 log_root_transid;
db94535d
CM
222 __le64 total_bytes;
223 __le64 bytes_used;
2e635a27 224 __le64 root_dir_objectid;
8a4b83cc 225 __le64 num_devices;
5f39d397
CM
226 __le32 sectorsize;
227 __le32 nodesize;
707e8a07 228 __le32 __unused_leafsize;
87ee04eb 229 __le32 stripesize;
0b86a832 230 __le32 sys_chunk_array_size;
84234f3a 231 __le64 chunk_root_generation;
f2b636e8
JB
232 __le64 compat_flags;
233 __le64 compat_ro_flags;
234 __le64 incompat_flags;
607d432d 235 __le16 csum_type;
db94535d 236 u8 root_level;
0b86a832 237 u8 chunk_root_level;
e02119d5 238 u8 log_root_level;
0d81ba5d 239 struct btrfs_dev_item dev_item;
c3027eb5 240
7ae9c09d 241 char label[BTRFS_LABEL_SIZE];
c3027eb5 242
0af3d00b 243 __le64 cache_generation;
26432799 244 __le64 uuid_tree_generation;
0af3d00b 245
c3027eb5 246 /* future expansion */
26432799 247 __le64 reserved[30];
0b86a832 248 u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE];
af31f5e5 249 struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS];
cfaa7295
CM
250} __attribute__ ((__packed__));
251
f2b636e8
JB
252/*
253 * Compat flags that we support. If any incompat flags are set other than the
254 * ones specified below then we will fail to mount
255 */
5d4f98a2 256#define BTRFS_FEATURE_COMPAT_SUPP 0ULL
2eaa055f
JM
257#define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL
258#define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL
70f6d82e
OS
259
260#define BTRFS_FEATURE_COMPAT_RO_SUPP \
6675df31
OS
261 (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE | \
262 BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID)
70f6d82e 263
2eaa055f
JM
264#define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL
265#define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL
266
0af3d00b
JB
267#define BTRFS_FEATURE_INCOMPAT_SUPP \
268 (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \
67377734 269 BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \
a6fa6fae 270 BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \
727011e0 271 BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \
f186373f 272 BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \
5c1aab1d 273 BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD | \
53b381b3 274 BTRFS_FEATURE_INCOMPAT_RAID56 | \
3173a18f 275 BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \
16e7549f
JB
276 BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \
277 BTRFS_FEATURE_INCOMPAT_NO_HOLES)
f2b636e8 278
2eaa055f
JM
279#define BTRFS_FEATURE_INCOMPAT_SAFE_SET \
280 (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF)
281#define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL
f2b636e8 282
fec577fb 283/*
62e2749e 284 * A leaf is full of items. offset and size tell us where to find
fec577fb
CM
285 * the item in the leaf (relative to the start of the data area)
286 */
0783fcfc 287struct btrfs_item {
e2fa7227 288 struct btrfs_disk_key key;
123abc88 289 __le32 offset;
5f39d397 290 __le32 size;
eb60ceac
CM
291} __attribute__ ((__packed__));
292
fec577fb
CM
293/*
294 * leaves have an item area and a data area:
295 * [item0, item1....itemN] [free space] [dataN...data1, data0]
296 *
297 * The data is separate from the items to get the keys closer together
298 * during searches.
299 */
234b63a0 300struct btrfs_leaf {
bb492bb0 301 struct btrfs_header header;
123abc88 302 struct btrfs_item items[];
eb60ceac
CM
303} __attribute__ ((__packed__));
304
fec577fb
CM
305/*
306 * all non-leaf blocks are nodes, they hold only keys and pointers to
307 * other blocks
308 */
123abc88
CM
309struct btrfs_key_ptr {
310 struct btrfs_disk_key key;
311 __le64 blockptr;
74493f7a 312 __le64 generation;
123abc88
CM
313} __attribute__ ((__packed__));
314
234b63a0 315struct btrfs_node {
bb492bb0 316 struct btrfs_header header;
123abc88 317 struct btrfs_key_ptr ptrs[];
eb60ceac
CM
318} __attribute__ ((__packed__));
319
fec577fb 320/*
234b63a0
CM
321 * btrfs_paths remember the path taken from the root down to the leaf.
322 * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point
fec577fb
CM
323 * to any other levels that are present.
324 *
325 * The slots array records the index of the item or block pointer
326 * used while walking the tree.
327 */
e4058b54 328enum { READA_NONE = 0, READA_BACK, READA_FORWARD };
234b63a0 329struct btrfs_path {
5f39d397 330 struct extent_buffer *nodes[BTRFS_MAX_LEVEL];
234b63a0 331 int slots[BTRFS_MAX_LEVEL];
925baedd 332 /* if there is real range locking, this locks field will change */
4fb72bf2 333 u8 locks[BTRFS_MAX_LEVEL];
dccabfad 334 u8 reada;
925baedd 335 /* keep some upper locks as we walk down */
7853f15b 336 u8 lowest_level;
459931ec
CM
337
338 /*
339 * set by btrfs_split_item, tells search_slot to keep all locks
340 * and to force calls to keep space in the nodes
341 */
b9473439
CM
342 unsigned int search_for_split:1;
343 unsigned int keep_locks:1;
344 unsigned int skip_locking:1;
345 unsigned int leave_spinning:1;
5d4f98a2 346 unsigned int search_commit_root:1;
3f8a18cc 347 unsigned int need_commit_sem:1;
5f5bc6b1 348 unsigned int skip_release_on_error:1;
eb60ceac 349};
da17066c 350#define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \
5d4f98a2 351 sizeof(struct btrfs_item))
e922e087
SB
352struct btrfs_dev_replace {
353 u64 replace_state; /* see #define above */
354 u64 time_started; /* seconds since 1-Jan-1970 */
355 u64 time_stopped; /* seconds since 1-Jan-1970 */
356 atomic64_t num_write_errors;
357 atomic64_t num_uncorrectable_read_errors;
358
359 u64 cursor_left;
360 u64 committed_cursor_left;
361 u64 cursor_left_last_write_of_item;
362 u64 cursor_right;
363
364 u64 cont_reading_from_srcdev_mode; /* see #define above */
365
366 int is_valid;
367 int item_needs_writeback;
368 struct btrfs_device *srcdev;
369 struct btrfs_device *tgtdev;
370
371 pid_t lock_owner;
372 atomic_t nesting_level;
373 struct mutex lock_finishing_cancel_unmount;
73beece9
LB
374 rwlock_t lock;
375 atomic_t read_locks;
376 atomic_t blocking_readers;
377 wait_queue_head_t read_lock_wq;
e922e087
SB
378
379 struct btrfs_scrub_progress scrub_progress;
380};
381
c1895442
JM
382/* For raid type sysfs entries */
383struct raid_kobject {
384 int raid_type;
385 struct kobject kobj;
386};
387
6324fbf3 388struct btrfs_space_info {
26b47ff6 389 spinlock_t lock;
6a63209f 390
89a55897
JB
391 u64 total_bytes; /* total bytes in the space,
392 this doesn't take mirrors into account */
b742bb82 393 u64 bytes_used; /* total bytes used,
e9c54999 394 this doesn't take mirrors into account */
6a63209f
JB
395 u64 bytes_pinned; /* total bytes pinned, will be freed when the
396 transaction finishes */
397 u64 bytes_reserved; /* total bytes the allocator has reserved for
398 current allocations */
6a63209f 399 u64 bytes_may_use; /* number of bytes that may be used for
9ed74f2d 400 delalloc/allocations */
26b47ff6
MX
401 u64 bytes_readonly; /* total bytes that are read only */
402
4f4db217
JB
403 u64 max_extent_size; /* This will hold the maximum extent size of
404 the space info if we had an ENOSPC in the
405 allocator. */
406
26b47ff6
MX
407 unsigned int full:1; /* indicates that we cannot allocate any more
408 chunks for this space */
409 unsigned int chunk_alloc:1; /* set if we are allocating a chunk */
410
411 unsigned int flush:1; /* set if we are trying to make space */
412
413 unsigned int force_alloc; /* set if we need to force a chunk
414 alloc for this space */
415
b742bb82 416 u64 disk_used; /* total bytes used on disk */
89a55897
JB
417 u64 disk_total; /* total bytes on disk, takes mirrors into
418 account */
6a63209f 419
26b47ff6
MX
420 u64 flags;
421
b150a4f1
JB
422 /*
423 * bytes_pinned is kept in line with what is actually pinned, as in
424 * we've called update_block_group and dropped the bytes_used counter
425 * and increased the bytes_pinned counter. However this means that
426 * bytes_pinned does not reflect the bytes that will be pinned once the
bb7ab3b9
AB
427 * delayed refs are flushed, so this counter is inc'ed every time we
428 * call btrfs_free_extent so it is a realtime count of what will be
01327610 429 * freed once the transaction is committed. It will be zeroed every
bb7ab3b9 430 * time the transaction commits.
b150a4f1
JB
431 */
432 struct percpu_counter total_bytes_pinned;
433
6324fbf3 434 struct list_head list;
75c68e9f 435 /* Protected by the spinlock 'lock'. */
633c0aad 436 struct list_head ro_bgs;
957780eb
JB
437 struct list_head priority_tickets;
438 struct list_head tickets;
939659df
WX
439 /*
440 * tickets_id just indicates the next ticket will be handled, so note
441 * it's not stored per ticket.
442 */
ce129655 443 u64 tickets_id;
0f9dd46c 444
26b47ff6 445 struct rw_semaphore groups_sem;
0f9dd46c 446 /* for block groups in our same type */
b742bb82 447 struct list_head block_groups[BTRFS_NR_RAID_TYPES];
fdb5effd 448 wait_queue_head_t wait;
6ab0a202
JM
449
450 struct kobject kobj;
c1895442 451 struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES];
0f9dd46c
JB
452};
453
66d8f3dd
MX
454#define BTRFS_BLOCK_RSV_GLOBAL 1
455#define BTRFS_BLOCK_RSV_DELALLOC 2
456#define BTRFS_BLOCK_RSV_TRANS 3
457#define BTRFS_BLOCK_RSV_CHUNK 4
458#define BTRFS_BLOCK_RSV_DELOPS 5
459#define BTRFS_BLOCK_RSV_EMPTY 6
460#define BTRFS_BLOCK_RSV_TEMP 7
461
f0486c68
YZ
462struct btrfs_block_rsv {
463 u64 size;
464 u64 reserved;
f0486c68 465 struct btrfs_space_info *space_info;
f0486c68 466 spinlock_t lock;
66d8f3dd
MX
467 unsigned short full;
468 unsigned short type;
469 unsigned short failfast;
f0486c68
YZ
470};
471
fa9c0d79
CM
472/*
473 * free clusters are used to claim free space in relatively large chunks,
583b7231
HK
474 * allowing us to do less seeky writes. They are used for all metadata
475 * allocations. In ssd_spread mode they are also used for data allocations.
fa9c0d79
CM
476 */
477struct btrfs_free_cluster {
478 spinlock_t lock;
479 spinlock_t refill_lock;
480 struct rb_root root;
481
482 /* largest extent in this cluster */
483 u64 max_size;
484
485 /* first extent starting offset */
486 u64 window_start;
487
c759c4e1
JB
488 /* We did a full search and couldn't create a cluster */
489 bool fragmented;
490
fa9c0d79
CM
491 struct btrfs_block_group_cache *block_group;
492 /*
493 * when a cluster is allocated from a block group, we put the
494 * cluster onto a list in the block group so that it can
495 * be freed before the block group is freed.
496 */
497 struct list_head block_group_list;
6324fbf3
CM
498};
499
817d52f8
JB
500enum btrfs_caching_type {
501 BTRFS_CACHE_NO = 0,
502 BTRFS_CACHE_STARTED = 1,
291c7d2f
JB
503 BTRFS_CACHE_FAST = 2,
504 BTRFS_CACHE_FINISHED = 3,
36cce922 505 BTRFS_CACHE_ERROR = 4,
817d52f8
JB
506};
507
0af3d00b
JB
508enum btrfs_disk_cache_state {
509 BTRFS_DC_WRITTEN = 0,
510 BTRFS_DC_ERROR = 1,
511 BTRFS_DC_CLEAR = 2,
512 BTRFS_DC_SETUP = 3,
0af3d00b
JB
513};
514
11833d66
YZ
515struct btrfs_caching_control {
516 struct list_head list;
517 struct mutex mutex;
518 wait_queue_head_t wait;
bab39bf9 519 struct btrfs_work work;
11833d66
YZ
520 struct btrfs_block_group_cache *block_group;
521 u64 progress;
1e4f4714 522 refcount_t count;
11833d66
YZ
523};
524
73fa48b6
OS
525/* Once caching_thread() finds this much free space, it will wake up waiters. */
526#define CACHING_CTL_WAKE_UP (1024 * 1024 * 2)
527
4c6d1d85
CM
528struct btrfs_io_ctl {
529 void *cur, *orig;
530 struct page *page;
531 struct page **pages;
f15376df 532 struct btrfs_fs_info *fs_info;
c9dc4c65 533 struct inode *inode;
4c6d1d85
CM
534 unsigned long size;
535 int index;
536 int num_pages;
c9dc4c65
CM
537 int entries;
538 int bitmaps;
4c6d1d85
CM
539 unsigned check_crcs:1;
540};
541
0966a7b1
QW
542/*
543 * Tree to record all locked full stripes of a RAID5/6 block group
544 */
545struct btrfs_full_stripe_locks_tree {
546 struct rb_root root;
547 struct mutex lock;
548};
549
9078a3e1
CM
550struct btrfs_block_group_cache {
551 struct btrfs_key key;
552 struct btrfs_block_group_item item;
817d52f8 553 struct btrfs_fs_info *fs_info;
0af3d00b 554 struct inode *inode;
c286ac48 555 spinlock_t lock;
324ae4df 556 u64 pinned;
e8569813 557 u64 reserved;
e570fd27 558 u64 delalloc_bytes;
1b2da372 559 u64 bytes_super;
0b86a832 560 u64 flags;
5b0e95bf 561 u64 cache_generation;
a5ed9182
OS
562
563 /*
564 * If the free space extent count exceeds this number, convert the block
565 * group to bitmaps.
566 */
567 u32 bitmap_high_thresh;
568
569 /*
570 * If the free space extent count drops below this number, convert the
571 * block group back to extents.
572 */
573 u32 bitmap_low_thresh;
53b381b3 574
e570fd27
MX
575 /*
576 * It is just used for the delayed data space allocation because
577 * only the data space allocation and the relative metadata update
578 * can be done cross the transaction.
579 */
580 struct rw_semaphore data_rwsem;
581
53b381b3
DW
582 /* for raid56, this is a full stripe, without parity */
583 unsigned long full_stripe_len;
584
868f401a 585 unsigned int ro;
0410c94a 586 unsigned int iref:1;
4f69cb98 587 unsigned int has_caching_ctl:1;
04216820 588 unsigned int removed:1;
0af3d00b
JB
589
590 int disk_cache_state;
0f9dd46c 591
817d52f8 592 /* cache tracking stuff */
817d52f8 593 int cached;
11833d66
YZ
594 struct btrfs_caching_control *caching_ctl;
595 u64 last_byte_to_unpin;
817d52f8 596
0f9dd46c
JB
597 struct btrfs_space_info *space_info;
598
599 /* free space cache stuff */
34d52cb6 600 struct btrfs_free_space_ctl *free_space_ctl;
0f9dd46c
JB
601
602 /* block group cache stuff */
603 struct rb_node cache_node;
604
605 /* for block groups in the same raid type */
606 struct list_head list;
d2fb3437
YZ
607
608 /* usage count */
609 atomic_t count;
fa9c0d79
CM
610
611 /* List of struct btrfs_free_clusters for this block group.
612 * Today it will only have one thing on it, but that may change
613 */
614 struct list_head cluster_list;
ea658bad 615
47ab2a6c
JB
616 /* For delayed block group creation or deletion of empty block groups */
617 struct list_head bg_list;
633c0aad
JB
618
619 /* For read-only block groups */
620 struct list_head ro_list;
04216820
FM
621
622 atomic_t trimming;
ce93ec54
JB
623
624 /* For dirty block groups */
625 struct list_head dirty_list;
c9dc4c65
CM
626 struct list_head io_list;
627
628 struct btrfs_io_ctl io_ctl;
a5ed9182 629
9cfa3e34
FM
630 /*
631 * Incremented when doing extent allocations and holding a read lock
632 * on the space_info's groups_sem semaphore.
633 * Decremented when an ordered extent that represents an IO against this
634 * block group's range is created (after it's added to its inode's
635 * root's list of ordered extents) or immediately after the allocation
636 * if it's a metadata extent or fallocate extent (for these cases we
637 * don't create ordered extents).
638 */
639 atomic_t reservations;
640
f78c436c
FM
641 /*
642 * Incremented while holding the spinlock *lock* by a task checking if
643 * it can perform a nocow write (incremented if the value for the *ro*
644 * field is 0). Decremented by such tasks once they create an ordered
645 * extent or before that if some error happens before reaching that step.
646 * This is to prevent races between block group relocation and nocow
647 * writes through direct IO.
648 */
649 atomic_t nocow_writers;
650
a5ed9182
OS
651 /* Lock for free space tree operations. */
652 struct mutex free_space_lock;
653
654 /*
655 * Does the block group need to be added to the free space tree?
656 * Protected by free_space_lock.
657 */
658 int needs_free_space;
0966a7b1
QW
659
660 /* Record locked full stripes for RAID5/6 block group */
661 struct btrfs_full_stripe_locks_tree full_stripe_locks_root;
9078a3e1 662};
0b86a832 663
097b8a7c
JS
664/* delayed seq elem */
665struct seq_list {
666 struct list_head list;
667 u64 seq;
668};
669
3284da7b
DS
670#define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 }
671
de47c9d3
EN
672#define SEQ_LAST ((u64)-1)
673
5d80366e
JB
674enum btrfs_orphan_cleanup_state {
675 ORPHAN_CLEANUP_STARTED = 1,
676 ORPHAN_CLEANUP_DONE = 2,
677};
678
53b381b3
DW
679/* used by the raid56 code to lock stripes for read/modify/write */
680struct btrfs_stripe_hash {
681 struct list_head hash_list;
682 wait_queue_head_t wait;
683 spinlock_t lock;
684};
685
686/* used by the raid56 code to lock stripes for read/modify/write */
687struct btrfs_stripe_hash_table {
4ae10b3a
CM
688 struct list_head stripe_cache;
689 spinlock_t cache_lock;
690 int cache_size;
691 struct btrfs_stripe_hash table[];
53b381b3
DW
692};
693
694#define BTRFS_STRIPE_HASH_TABLE_BITS 11
695
21c7e756
MX
696void btrfs_init_async_reclaim_work(struct work_struct *work);
697
097b8a7c 698/* fs_info */
5d4f98a2 699struct reloc_control;
0b86a832 700struct btrfs_device;
8a4b83cc 701struct btrfs_fs_devices;
c9e9f97b 702struct btrfs_balance_control;
16cdcec7 703struct btrfs_delayed_root;
afcdd129
JB
704
705#define BTRFS_FS_BARRIER 1
706#define BTRFS_FS_CLOSING_START 2
707#define BTRFS_FS_CLOSING_DONE 3
708#define BTRFS_FS_LOG_RECOVERING 4
709#define BTRFS_FS_OPEN 5
710#define BTRFS_FS_QUOTA_ENABLED 6
711#define BTRFS_FS_QUOTA_ENABLING 7
afcdd129
JB
712#define BTRFS_FS_UPDATE_UUID_TREE_GEN 9
713#define BTRFS_FS_CREATING_FREE_SPACE_TREE 10
714#define BTRFS_FS_BTREE_ERR 11
715#define BTRFS_FS_LOG1_ERR 12
716#define BTRFS_FS_LOG2_ERR 13
f29efe29 717#define BTRFS_FS_QUOTA_OVERRIDE 14
fac03c8d
DS
718/* Used to record internally whether fs has been frozen */
719#define BTRFS_FS_FROZEN 15
f29efe29 720
171938e5
DS
721/*
722 * Indicate that a whole-filesystem exclusive operation is running
723 * (device replace, resize, device add/delete, balance)
724 */
69ad5976 725#define BTRFS_FS_EXCL_OP 16
afcdd129 726
9f5fae2f 727struct btrfs_fs_info {
5f39d397 728 u8 fsid[BTRFS_FSID_SIZE];
e17cade2 729 u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
afcdd129 730 unsigned long flags;
62e2749e
CM
731 struct btrfs_root *extent_root;
732 struct btrfs_root *tree_root;
0b86a832
CM
733 struct btrfs_root *chunk_root;
734 struct btrfs_root *dev_root;
3de4586c 735 struct btrfs_root *fs_root;
d20f7043 736 struct btrfs_root *csum_root;
416ac51d 737 struct btrfs_root *quota_root;
f7a81ea4 738 struct btrfs_root *uuid_root;
a5ed9182 739 struct btrfs_root *free_space_root;
e02119d5
CM
740
741 /* the log root tree is a directory of all the other log roots */
742 struct btrfs_root *log_root_tree;
4df27c4d
YZ
743
744 spinlock_t fs_roots_radix_lock;
0f7d52f4 745 struct radix_tree_root fs_roots_radix;
1a5bc167 746
0f9dd46c
JB
747 /* block group cache stuff */
748 spinlock_t block_group_cache_lock;
a1897fdd 749 u64 first_logical_byte;
0f9dd46c
JB
750 struct rb_root block_group_cache_tree;
751
2bf64758 752 /* keep track of unallocated space */
a5ed45f8 753 atomic64_t free_chunk_space;
2bf64758 754
11833d66
YZ
755 struct extent_io_tree freed_extents[2];
756 struct extent_io_tree *pinned_extents;
1a5bc167 757
0b86a832
CM
758 /* logical->physical extent mapping */
759 struct btrfs_mapping_tree mapping_tree;
760
16cdcec7
MX
761 /*
762 * block reservation for extent, checksum, root tree and
763 * delayed dir index item
764 */
f0486c68
YZ
765 struct btrfs_block_rsv global_block_rsv;
766 /* block reservation for delay allocation */
767 struct btrfs_block_rsv delalloc_block_rsv;
768 /* block reservation for metadata operations */
769 struct btrfs_block_rsv trans_block_rsv;
770 /* block reservation for chunk tree */
771 struct btrfs_block_rsv chunk_block_rsv;
6d668dda
JB
772 /* block reservation for delayed operations */
773 struct btrfs_block_rsv delayed_block_rsv;
f0486c68
YZ
774
775 struct btrfs_block_rsv empty_block_rsv;
776
293ffd5f 777 u64 generation;
15ee9bc7 778 u64 last_trans_committed;
0a2b2a84 779 u64 avg_delayed_ref_runtime;
12fcfd22
CM
780
781 /*
782 * this is updated to the current trans every time a full commit
783 * is required instead of the faster short fsync log commits
784 */
785 u64 last_trans_log_full_commit;
25cd999e 786 unsigned long mount_opt;
572d9ab7
DS
787 /*
788 * Track requests for actions that need to be done during transaction
789 * commit (like for some mount options).
790 */
791 unsigned long pending_changes;
261507a0 792 unsigned long compress_type:4;
8b87dc17 793 int commit_interval;
8c6a3ee6
MX
794 /*
795 * It is a suggestive number, the read side is safe even it gets a
796 * wrong number because we will write out the data into a regular
797 * extent. The write side(mount/remount) is under ->s_umount lock,
798 * so it is also safe.
799 */
6f568d35 800 u64 max_inline;
0d0c71b3 801
79154b1b 802 struct btrfs_transaction *running_transaction;
e6dcd2dc 803 wait_queue_head_t transaction_throttle;
f9295749 804 wait_queue_head_t transaction_wait;
bb9c12c9 805 wait_queue_head_t transaction_blocked_wait;
771ed689 806 wait_queue_head_t async_submit_wait;
e02119d5 807
ceda0864
MX
808 /*
809 * Used to protect the incompat_flags, compat_flags, compat_ro_flags
810 * when they are updated.
811 *
812 * Because we do not clear the flags for ever, so we needn't use
813 * the lock on the read side.
814 *
815 * We also needn't use the lock when we mount the fs, because
816 * there is no other task which will update the flag.
817 */
818 spinlock_t super_lock;
6c41761f
DS
819 struct btrfs_super_block *super_copy;
820 struct btrfs_super_block *super_for_commit;
e20d96d6 821 struct super_block *sb;
d98237b3 822 struct inode *btree_inode;
e02119d5 823 struct mutex tree_log_mutex;
a74a4b97
CM
824 struct mutex transaction_kthread_mutex;
825 struct mutex cleaner_mutex;
925baedd 826 struct mutex chunk_mutex;
7d9eb12c 827 struct mutex volume_mutex;
53b381b3 828
1bbc621e
CM
829 /*
830 * this is taken to make sure we don't set block groups ro after
831 * the free space cache has been allocated on them
832 */
833 struct mutex ro_block_group_mutex;
834
53b381b3
DW
835 /* this is used during read/modify/write to make sure
836 * no two ios are trying to mod the same stripe at the same
837 * time
838 */
839 struct btrfs_stripe_hash_table *stripe_hash_table;
840
5a3f23d5
CM
841 /*
842 * this protects the ordered operations list only while we are
843 * processing all of the entries on it. This way we make
844 * sure the commit code doesn't find the list temporarily empty
845 * because another function happens to be doing non-waiting preflush
846 * before jumping into the main commit.
847 */
848 struct mutex ordered_operations_mutex;
9ffba8cd 849
9e351cc8 850 struct rw_semaphore commit_root_sem;
5a3f23d5 851
c71bf099 852 struct rw_semaphore cleanup_work_sem;
76dda93c 853
c71bf099 854 struct rw_semaphore subvol_sem;
76dda93c
YZ
855 struct srcu_struct subvol_srcu;
856
a4abeea4 857 spinlock_t trans_lock;
7585717f
CM
858 /*
859 * the reloc mutex goes with the trans lock, it is taken
860 * during commit to protect us from the relocation code
861 */
862 struct mutex reloc_mutex;
863
8fd17795 864 struct list_head trans_list;
facda1e7 865 struct list_head dead_roots;
11833d66 866 struct list_head caching_block_groups;
e02119d5 867
24bbcf04
YZ
868 spinlock_t delayed_iput_lock;
869 struct list_head delayed_iputs;
c2d6cb16 870 struct mutex cleaner_delayed_iput_mutex;
24bbcf04 871
f29021b2
JS
872 /* this protects tree_mod_seq_list */
873 spinlock_t tree_mod_seq_lock;
fc36ed7e 874 atomic64_t tree_mod_seq;
f29021b2
JS
875 struct list_head tree_mod_seq_list;
876
877 /* this protects tree_mod_log */
878 rwlock_t tree_mod_log_lock;
879 struct rb_root tree_mod_log;
880
771ed689 881 atomic_t async_delalloc_pages;
a4abeea4 882 atomic_t open_ioctl_trans;
ce9adaa5 883
3eaa2885 884 /*
199c2a9c 885 * this is used to protect the following list -- ordered_roots.
3eaa2885 886 */
199c2a9c 887 spinlock_t ordered_root_lock;
5a3f23d5
CM
888
889 /*
199c2a9c
MX
890 * all fs/file tree roots in which there are data=ordered extents
891 * pending writeback are added into this list.
892 *
5a3f23d5
CM
893 * these can span multiple transactions and basically include
894 * every dirty data page that isn't from nodatacow
895 */
199c2a9c 896 struct list_head ordered_roots;
5a3f23d5 897
573bfb72 898 struct mutex delalloc_root_mutex;
eb73c1b7
MX
899 spinlock_t delalloc_root_lock;
900 /* all fs/file tree roots that have delalloc inodes. */
901 struct list_head delalloc_roots;
3eaa2885 902
8b712842
CM
903 /*
904 * there is a pool of worker threads for checksumming during writes
905 * and a pool for checksumming after reads. This is because readers
906 * can run with FS locks held, and the writers may be waiting for
907 * those locks. We don't want ordering in the pending list to cause
908 * deadlocks, and so the two are serviced separately.
1cc127b5
CM
909 *
910 * A third pool does submit_bio to avoid deadlocking with the other
911 * two
8b712842 912 */
d458b054
QW
913 struct btrfs_workqueue *workers;
914 struct btrfs_workqueue *delalloc_workers;
915 struct btrfs_workqueue *flush_workers;
916 struct btrfs_workqueue *endio_workers;
917 struct btrfs_workqueue *endio_meta_workers;
918 struct btrfs_workqueue *endio_raid56_workers;
8b110e39 919 struct btrfs_workqueue *endio_repair_workers;
d458b054
QW
920 struct btrfs_workqueue *rmw_workers;
921 struct btrfs_workqueue *endio_meta_write_workers;
922 struct btrfs_workqueue *endio_write_workers;
923 struct btrfs_workqueue *endio_freespace_worker;
924 struct btrfs_workqueue *submit_workers;
925 struct btrfs_workqueue *caching_workers;
926 struct btrfs_workqueue *readahead_workers;
bab39bf9 927
247e743c
CM
928 /*
929 * fixup workers take dirty pages that didn't properly go through
930 * the cow mechanism and make them safe to write. It happens
931 * for the sys_munmap function call path
932 */
d458b054
QW
933 struct btrfs_workqueue *fixup_workers;
934 struct btrfs_workqueue *delayed_workers;
a79b7d4b
CM
935
936 /* the extent workers do delayed refs on the extent allocation tree */
937 struct btrfs_workqueue *extent_workers;
a74a4b97
CM
938 struct task_struct *transaction_kthread;
939 struct task_struct *cleaner_kthread;
4543df7e 940 int thread_pool_size;
8b712842 941
6ab0a202 942 struct kobject *space_info_kobj;
9f5fae2f 943
324ae4df 944 u64 total_pinned;
b9473439 945
e2d84521
MX
946 /* used to keep from writing metadata until there is a nice batch */
947 struct percpu_counter dirty_metadata_bytes;
963d678b 948 struct percpu_counter delalloc_bytes;
e2d84521 949 s32 dirty_metadata_batch;
963d678b
MX
950 s32 delalloc_batch;
951
0b86a832
CM
952 struct list_head dirty_cowonly_roots;
953
8a4b83cc 954 struct btrfs_fs_devices *fs_devices;
4184ea7f
CM
955
956 /*
957 * the space_info list is almost entirely read only. It only changes
958 * when we add a new raid type to the FS, and that happens
959 * very rarely. RCU is used to protect it.
960 */
6324fbf3 961 struct list_head space_info;
4184ea7f 962
b4d7c3c9
LZ
963 struct btrfs_space_info *data_sinfo;
964
5d4f98a2
YZ
965 struct reloc_control *reloc_ctl;
966
583b7231 967 /* data_alloc_cluster is only used in ssd_spread mode */
fa9c0d79
CM
968 struct btrfs_free_cluster data_alloc_cluster;
969
970 /* all metadata allocations go through this cluster */
971 struct btrfs_free_cluster meta_alloc_cluster;
d18a2c44 972
4cb5300b
CM
973 /* auto defrag inodes go here */
974 spinlock_t defrag_inodes_lock;
975 struct rb_root defrag_inodes;
976 atomic_t defrag_running;
977
de98ced9
MX
978 /* Used to protect avail_{data, metadata, system}_alloc_bits */
979 seqlock_t profiles_lock;
a46d11a8
ID
980 /*
981 * these three are in extended format (availability of single
982 * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other
983 * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits)
984 */
d18a2c44
CM
985 u64 avail_data_alloc_bits;
986 u64 avail_metadata_alloc_bits;
987 u64 avail_system_alloc_bits;
788f20eb 988
c9e9f97b
ID
989 /* restriper state */
990 spinlock_t balance_lock;
991 struct mutex balance_mutex;
837d5b6e
ID
992 atomic_t balance_running;
993 atomic_t balance_pause_req;
a7e99c69 994 atomic_t balance_cancel_req;
c9e9f97b 995 struct btrfs_balance_control *balance_ctl;
837d5b6e 996 wait_queue_head_t balance_wait_q;
c9e9f97b 997
97e728d4
JB
998 unsigned data_chunk_allocations;
999 unsigned metadata_ratio;
1000
788f20eb 1001 void *bdev_holder;
acce952b 1002
a2de733c
AJ
1003 /* private scrub information */
1004 struct mutex scrub_lock;
1005 atomic_t scrubs_running;
1006 atomic_t scrub_pause_req;
1007 atomic_t scrubs_paused;
1008 atomic_t scrub_cancel_req;
1009 wait_queue_head_t scrub_pause_wait;
a2de733c 1010 int scrub_workers_refcnt;
d458b054
QW
1011 struct btrfs_workqueue *scrub_workers;
1012 struct btrfs_workqueue *scrub_wr_completion_workers;
1013 struct btrfs_workqueue *scrub_nocow_workers;
20b2e302 1014 struct btrfs_workqueue *scrub_parity_workers;
a2de733c 1015
21adbd5c
SB
1016#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
1017 u32 check_integrity_print_mask;
1018#endif
416ac51d
AJ
1019 /* is qgroup tracking in a consistent state? */
1020 u64 qgroup_flags;
1021
1022 /* holds configuration and tracking. Protected by qgroup_lock */
1023 struct rb_root qgroup_tree;
fcebe456 1024 struct rb_root qgroup_op_tree;
416ac51d 1025 spinlock_t qgroup_lock;
fcebe456
JB
1026 spinlock_t qgroup_op_lock;
1027 atomic_t qgroup_op_seq;
416ac51d 1028
1e8f9158
WS
1029 /*
1030 * used to avoid frequently calling ulist_alloc()/ulist_free()
1031 * when doing qgroup accounting, it must be protected by qgroup_lock.
1032 */
1033 struct ulist *qgroup_ulist;
1034
f2f6ed3d
WS
1035 /* protect user change for quota operations */
1036 struct mutex qgroup_ioctl_lock;
1037
416ac51d
AJ
1038 /* list of dirty qgroups to be written at next commit */
1039 struct list_head dirty_qgroups;
1040
e69bcee3 1041 /* used by qgroup for an efficient tree traversal */
416ac51d 1042 u64 qgroup_seq;
21adbd5c 1043
2f232036
JS
1044 /* qgroup rescan items */
1045 struct mutex qgroup_rescan_lock; /* protects the progress item */
1046 struct btrfs_key qgroup_rescan_progress;
d458b054 1047 struct btrfs_workqueue *qgroup_rescan_workers;
57254b6e 1048 struct completion qgroup_rescan_completion;
b382a324 1049 struct btrfs_work qgroup_rescan_work;
d2c609b8 1050 bool qgroup_rescan_running; /* protected by qgroup_rescan_lock */
2f232036 1051
acce952b 1052 /* filesystem state */
87533c47 1053 unsigned long fs_state;
16cdcec7
MX
1054
1055 struct btrfs_delayed_root *delayed_root;
af31f5e5 1056
90519d66
AJ
1057 /* readahead tree */
1058 spinlock_t reada_lock;
1059 struct radix_tree_root reada_tree;
531f4b1a 1060
2fefd558
ZL
1061 /* readahead works cnt */
1062 atomic_t reada_works_cnt;
1063
f28491e0
JB
1064 /* Extent buffer radix tree */
1065 spinlock_t buffer_lock;
1066 struct radix_tree_root buffer_radix;
1067
af31f5e5
CM
1068 /* next backup root to be overwritten */
1069 int backup_root_index;
5af3e8cc 1070
e922e087
SB
1071 /* device replace state */
1072 struct btrfs_dev_replace dev_replace;
5ac00add 1073
c404e0dc
MX
1074 struct percpu_counter bio_counter;
1075 wait_queue_head_t replace_wait;
1076
803b2f54 1077 struct semaphore uuid_tree_rescan_sem;
21c7e756
MX
1078
1079 /* Used to reclaim the metadata space in the background. */
1080 struct work_struct async_reclaim_work;
47ab2a6c
JB
1081
1082 spinlock_t unused_bgs_lock;
1083 struct list_head unused_bgs;
d4b450cd 1084 struct mutex unused_bg_unpin_mutex;
67c5e7d4 1085 struct mutex delete_unused_bgs_mutex;
f667aef6
QW
1086
1087 /* For btrfs to record security options */
1088 struct security_mnt_opts security_opts;
04216820
FM
1089
1090 /*
1091 * Chunks that can't be freed yet (under a trim/discard operation)
1092 * and will be latter freed. Protected by fs_info->chunk_mutex.
1093 */
1094 struct list_head pinned_chunks;
511711af 1095
da17066c
JM
1096 /* Cached block sizes */
1097 u32 nodesize;
1098 u32 sectorsize;
1099 u32 stripesize;
324ae4df 1100};
0b86a832 1101
da17066c
JM
1102static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb)
1103{
1104 return sb->s_fs_info;
1105}
1106
8257b2dc
MX
1107struct btrfs_subvolume_writers {
1108 struct percpu_counter counter;
1109 wait_queue_head_t wait;
1110};
1111
27cdeb70
MX
1112/*
1113 * The state of btrfs root
1114 */
1115/*
1116 * btrfs_record_root_in_trans is a multi-step process,
1117 * and it can race with the balancing code. But the
1118 * race is very small, and only the first time the root
1119 * is added to each transaction. So IN_TRANS_SETUP
1120 * is used to tell us when more checks are required
1121 */
1122#define BTRFS_ROOT_IN_TRANS_SETUP 0
1123#define BTRFS_ROOT_REF_COWS 1
1124#define BTRFS_ROOT_TRACK_DIRTY 2
1125#define BTRFS_ROOT_IN_RADIX 3
f5ee5c9a
JM
1126#define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 4
1127#define BTRFS_ROOT_DEFRAG_RUNNING 5
1128#define BTRFS_ROOT_FORCE_COW 6
1129#define BTRFS_ROOT_MULTI_LOG_TASKS 7
1130#define BTRFS_ROOT_DIRTY 8
27cdeb70 1131
9f5fae2f
CM
1132/*
1133 * in ram representation of the tree. extent_root is used for all allocations
f2458e1d 1134 * and for the extent tree extent_root root.
9f5fae2f
CM
1135 */
1136struct btrfs_root {
5f39d397 1137 struct extent_buffer *node;
925baedd 1138
5f39d397 1139 struct extent_buffer *commit_root;
e02119d5 1140 struct btrfs_root *log_root;
1a40e23b 1141 struct btrfs_root *reloc_root;
31153d81 1142
27cdeb70 1143 unsigned long state;
62e2749e
CM
1144 struct btrfs_root_item root_item;
1145 struct btrfs_key root_key;
9f5fae2f 1146 struct btrfs_fs_info *fs_info;
d0c803c4
CM
1147 struct extent_io_tree dirty_log_pages;
1148
a2135011 1149 struct mutex objectid_mutex;
7237f183 1150
f0486c68
YZ
1151 spinlock_t accounting_lock;
1152 struct btrfs_block_rsv *block_rsv;
1153
581bb050 1154 /* free ino cache stuff */
581bb050 1155 struct btrfs_free_space_ctl *free_ino_ctl;
57cdc8db
DS
1156 enum btrfs_caching_type ino_cache_state;
1157 spinlock_t ino_cache_lock;
1158 wait_queue_head_t ino_cache_wait;
581bb050 1159 struct btrfs_free_space_ctl *free_ino_pinned;
57cdc8db
DS
1160 u64 ino_cache_progress;
1161 struct inode *ino_cache_inode;
581bb050 1162
e02119d5 1163 struct mutex log_mutex;
7237f183
YZ
1164 wait_queue_head_t log_writer_wait;
1165 wait_queue_head_t log_commit_wait[2];
8b050d35 1166 struct list_head log_ctxs[2];
7237f183
YZ
1167 atomic_t log_writers;
1168 atomic_t log_commit[2];
2ecb7923 1169 atomic_t log_batch;
bb14a59b 1170 int log_transid;
d1433deb
MX
1171 /* No matter the commit succeeds or not*/
1172 int log_transid_committed;
1173 /* Just be updated when the commit succeeds. */
bb14a59b 1174 int last_log_commit;
ff782e0a 1175 pid_t log_start_pid;
ea8c2819 1176
0f7d52f4
CM
1177 u64 objectid;
1178 u64 last_trans;
5f39d397 1179
9f5fae2f 1180 u32 type;
13a8a7c8
YZ
1181
1182 u64 highest_objectid;
7585717f 1183
05653ef3 1184#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
0d4cf4e6 1185 /* only used with CONFIG_BTRFS_FS_RUN_SANITY_TESTS is enabled */
faa2dbf0 1186 u64 alloc_bytenr;
05653ef3 1187#endif
faa2dbf0 1188
3f157a2f 1189 u64 defrag_trans_start;
6702ed49 1190 struct btrfs_key defrag_progress;
0ef3e66b 1191 struct btrfs_key defrag_max;
58176a96 1192 char *name;
0b86a832
CM
1193
1194 /* the dirty list is only used by non-reference counted roots */
1195 struct list_head dirty_list;
7b128766 1196
5d4f98a2
YZ
1197 struct list_head root_list;
1198
2ab28f32
JB
1199 spinlock_t log_extents_lock[2];
1200 struct list_head logged_list[2];
1201
d68fc57b 1202 spinlock_t orphan_lock;
8a35d95f 1203 atomic_t orphan_inodes;
d68fc57b 1204 struct btrfs_block_rsv *orphan_block_rsv;
d68fc57b 1205 int orphan_cleanup_state;
3394e160 1206
5d4f98a2
YZ
1207 spinlock_t inode_lock;
1208 /* red-black tree that keeps track of in-memory inodes */
1209 struct rb_root inode_tree;
1210
16cdcec7
MX
1211 /*
1212 * radix tree that keeps track of delayed nodes of every inode,
1213 * protected by inode_lock
1214 */
1215 struct radix_tree_root delayed_nodes_tree;
3394e160
CM
1216 /*
1217 * right now this just gets used so that a root has its own devid
1218 * for stat. It may be used for more later
1219 */
0ee5dc67 1220 dev_t anon_dev;
f1ebcc74 1221
5f3ab90a 1222 spinlock_t root_item_lock;
0700cea7 1223 refcount_t refs;
eb73c1b7 1224
573bfb72 1225 struct mutex delalloc_mutex;
eb73c1b7
MX
1226 spinlock_t delalloc_lock;
1227 /*
1228 * all of the inodes that have delalloc bytes. It is possible for
1229 * this list to be empty even when there is still dirty data=ordered
1230 * extents waiting to finish IO.
1231 */
1232 struct list_head delalloc_inodes;
1233 struct list_head delalloc_root;
1234 u64 nr_delalloc_inodes;
31f3d255
MX
1235
1236 struct mutex ordered_extent_mutex;
199c2a9c
MX
1237 /*
1238 * this is used by the balancing code to wait for all the pending
1239 * ordered extents
1240 */
1241 spinlock_t ordered_extent_lock;
1242
1243 /*
1244 * all of the data=ordered extents pending writeback
1245 * these can span multiple transactions and basically include
1246 * every dirty data page that isn't from nodatacow
1247 */
1248 struct list_head ordered_extents;
1249 struct list_head ordered_root;
1250 u64 nr_ordered_extents;
2c686537
DS
1251
1252 /*
1253 * Number of currently running SEND ioctls to prevent
1254 * manipulation with the read-only status via SUBVOL_SETFLAGS
1255 */
1256 int send_in_progress;
8257b2dc 1257 struct btrfs_subvolume_writers *subv_writers;
ea14b57f 1258 atomic_t will_be_snapshotted;
55eeaf05
QW
1259
1260 /* For qgroup metadata space reserve */
ce0dcee6 1261 atomic64_t qgroup_meta_rsv;
62e2749e 1262};
118c701e 1263
23b5ec74
JB
1264struct btrfs_file_private {
1265 struct btrfs_trans_handle *trans;
1266 void *filldir_buf;
1267};
1268
da17066c
JM
1269static inline u32 btrfs_inode_sectorsize(const struct inode *inode)
1270{
1271 return btrfs_sb(inode->i_sb)->sectorsize;
1272}
62e2749e 1273
da17066c 1274static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info)
1db1ff92 1275{
118c701e
NB
1276
1277 return info->nodesize - sizeof(struct btrfs_header);
1db1ff92
JM
1278}
1279
3d9ec8c4
NB
1280#define BTRFS_LEAF_DATA_OFFSET offsetof(struct btrfs_leaf, items)
1281
da17066c 1282static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info)
1db1ff92 1283{
da17066c 1284 return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item);
1db1ff92
JM
1285}
1286
da17066c 1287static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info)
1db1ff92 1288{
da17066c 1289 return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr);
1db1ff92
JM
1290}
1291
1292#define BTRFS_FILE_EXTENT_INLINE_DATA_START \
1293 (offsetof(struct btrfs_file_extent_item, disk_bytenr))
da17066c 1294static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info)
1db1ff92 1295{
da17066c 1296 return BTRFS_MAX_ITEM_SIZE(info) -
1db1ff92
JM
1297 BTRFS_FILE_EXTENT_INLINE_DATA_START;
1298}
1299
da17066c 1300static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info)
1db1ff92 1301{
da17066c 1302 return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item);
1db1ff92
JM
1303}
1304
0942caa3
DS
1305/*
1306 * Flags for mount options.
1307 *
1308 * Note: don't forget to add new options to btrfs_show_options()
1309 */
21ad10cf
CM
1310#define BTRFS_MOUNT_NODATASUM (1 << 0)
1311#define BTRFS_MOUNT_NODATACOW (1 << 1)
1312#define BTRFS_MOUNT_NOBARRIER (1 << 2)
e18e4809 1313#define BTRFS_MOUNT_SSD (1 << 3)
dfe25020 1314#define BTRFS_MOUNT_DEGRADED (1 << 4)
c8b97818 1315#define BTRFS_MOUNT_COMPRESS (1 << 5)
3a5e1404 1316#define BTRFS_MOUNT_NOTREELOG (1 << 6)
dccae999 1317#define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7)
451d7585 1318#define BTRFS_MOUNT_SSD_SPREAD (1 << 8)
c289811c 1319#define BTRFS_MOUNT_NOSSD (1 << 9)
e244a0ae 1320#define BTRFS_MOUNT_DISCARD (1 << 10)
a555f810 1321#define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11)
0af3d00b 1322#define BTRFS_MOUNT_SPACE_CACHE (1 << 12)
88c2ba3b 1323#define BTRFS_MOUNT_CLEAR_CACHE (1 << 13)
4260f7c7 1324#define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14)
91435650 1325#define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15)
4cb5300b 1326#define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16)
4b9465cb 1327#define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17)
8dcddfa0 1328#define BTRFS_MOUNT_USEBACKUPROOT (1 << 18)
9555c6c1 1329#define BTRFS_MOUNT_SKIP_BALANCE (1 << 19)
c126dea7
CM
1330#define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20)
1331#define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21)
8c342930 1332#define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22)
f420ee1e 1333#define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23)
d0bd4560
JB
1334#define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24)
1335#define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25)
f7d3d2f9 1336#define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26)
96da0919 1337#define BTRFS_MOUNT_NOLOGREPLAY (1 << 27)
fb592373 1338#define BTRFS_MOUNT_REF_VERIFY (1 << 28)
b6cda9bc 1339
8b87dc17 1340#define BTRFS_DEFAULT_COMMIT_INTERVAL (30)
f7e98a7f 1341#define BTRFS_DEFAULT_MAX_INLINE (2048)
8b87dc17 1342
b6cda9bc
CM
1343#define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt)
1344#define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt)
dc81cdc5 1345#define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt)
3cdde224 1346#define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \
b6cda9bc 1347 BTRFS_MOUNT_##opt)
572d9ab7 1348
3cdde224 1349#define btrfs_set_and_info(fs_info, opt, fmt, args...) \
9d89ce65 1350{ \
3cdde224
JM
1351 if (!btrfs_test_opt(fs_info, opt)) \
1352 btrfs_info(fs_info, fmt, ##args); \
1353 btrfs_set_opt(fs_info->mount_opt, opt); \
9d89ce65
WS
1354}
1355
3cdde224 1356#define btrfs_clear_and_info(fs_info, opt, fmt, args...) \
9d89ce65 1357{ \
3cdde224
JM
1358 if (btrfs_test_opt(fs_info, opt)) \
1359 btrfs_info(fs_info, fmt, ##args); \
1360 btrfs_clear_opt(fs_info->mount_opt, opt); \
9d89ce65
WS
1361}
1362
d0bd4560
JB
1363#ifdef CONFIG_BTRFS_DEBUG
1364static inline int
2ff7e61e 1365btrfs_should_fragment_free_space(struct btrfs_block_group_cache *block_group)
d0bd4560 1366{
2ff7e61e 1367 struct btrfs_fs_info *fs_info = block_group->fs_info;
0b246afa
JM
1368
1369 return (btrfs_test_opt(fs_info, FRAGMENT_METADATA) &&
d0bd4560 1370 block_group->flags & BTRFS_BLOCK_GROUP_METADATA) ||
0b246afa 1371 (btrfs_test_opt(fs_info, FRAGMENT_DATA) &&
d0bd4560
JB
1372 block_group->flags & BTRFS_BLOCK_GROUP_DATA);
1373}
1374#endif
1375
572d9ab7
DS
1376/*
1377 * Requests for changes that need to be done during transaction commit.
1378 *
1379 * Internal mount options that are used for special handling of the real
1380 * mount options (eg. cannot be set during remount and have to be set during
1381 * transaction commit)
1382 */
1383
7e1876ac
DS
1384#define BTRFS_PENDING_SET_INODE_MAP_CACHE (0)
1385#define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1)
d51033d0 1386#define BTRFS_PENDING_COMMIT (2)
7e1876ac 1387
572d9ab7
DS
1388#define btrfs_test_pending(info, opt) \
1389 test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes)
1390#define btrfs_set_pending(info, opt) \
1391 set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes)
1392#define btrfs_clear_pending(info, opt) \
1393 clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes)
1394
1395/*
1396 * Helpers for setting pending mount option changes.
1397 *
1398 * Expects corresponding macros
1399 * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name
1400 */
1401#define btrfs_set_pending_and_info(info, opt, fmt, args...) \
1402do { \
1403 if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \
1404 btrfs_info((info), fmt, ##args); \
1405 btrfs_set_pending((info), SET_##opt); \
1406 btrfs_clear_pending((info), CLEAR_##opt); \
1407 } \
1408} while(0)
1409
1410#define btrfs_clear_pending_and_info(info, opt, fmt, args...) \
1411do { \
1412 if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \
1413 btrfs_info((info), fmt, ##args); \
1414 btrfs_set_pending((info), CLEAR_##opt); \
1415 btrfs_clear_pending((info), SET_##opt); \
1416 } \
1417} while(0)
1418
b98b6767
Y
1419/*
1420 * Inode flags
1421 */
fdebe2bd
Y
1422#define BTRFS_INODE_NODATASUM (1 << 0)
1423#define BTRFS_INODE_NODATACOW (1 << 1)
1424#define BTRFS_INODE_READONLY (1 << 2)
c8b97818 1425#define BTRFS_INODE_NOCOMPRESS (1 << 3)
d899e052 1426#define BTRFS_INODE_PREALLOC (1 << 4)
6cbff00f
CH
1427#define BTRFS_INODE_SYNC (1 << 5)
1428#define BTRFS_INODE_IMMUTABLE (1 << 6)
1429#define BTRFS_INODE_APPEND (1 << 7)
1430#define BTRFS_INODE_NODUMP (1 << 8)
1431#define BTRFS_INODE_NOATIME (1 << 9)
1432#define BTRFS_INODE_DIRSYNC (1 << 10)
75e7cb7f 1433#define BTRFS_INODE_COMPRESS (1 << 11)
6cbff00f 1434
08fe4db1
LZ
1435#define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31)
1436
cfed81a0 1437struct btrfs_map_token {
1cbb1f45 1438 const struct extent_buffer *eb;
cfed81a0
CM
1439 char *kaddr;
1440 unsigned long offset;
1441};
1442
2e78c927
CR
1443#define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \
1444 ((bytes) >> (fs_info)->sb->s_blocksize_bits)
1445
cfed81a0
CM
1446static inline void btrfs_init_map_token (struct btrfs_map_token *token)
1447{
ad914559 1448 token->kaddr = NULL;
cfed81a0
CM
1449}
1450
01327610 1451/* some macros to generate set/get functions for the struct fields. This
5f39d397
CM
1452 * assumes there is a lefoo_to_cpu for every type, so lets make a simple
1453 * one for u8:
1454 */
1455#define le8_to_cpu(v) (v)
1456#define cpu_to_le8(v) (v)
1457#define __le8 u8
1458
62e85577 1459#define read_eb_member(eb, ptr, type, member, result) (\
5f39d397
CM
1460 read_extent_buffer(eb, (char *)(result), \
1461 ((unsigned long)(ptr)) + \
1462 offsetof(type, member), \
1463 sizeof(((type *)0)->member)))
1464
62e85577 1465#define write_eb_member(eb, ptr, type, member, result) (\
5f39d397
CM
1466 write_extent_buffer(eb, (char *)(result), \
1467 ((unsigned long)(ptr)) + \
1468 offsetof(type, member), \
1469 sizeof(((type *)0)->member)))
1470
18077bb4 1471#define DECLARE_BTRFS_SETGET_BITS(bits) \
1cbb1f45
JM
1472u##bits btrfs_get_token_##bits(const struct extent_buffer *eb, \
1473 const void *ptr, unsigned long off, \
1474 struct btrfs_map_token *token); \
1475void btrfs_set_token_##bits(struct extent_buffer *eb, const void *ptr, \
18077bb4
LZ
1476 unsigned long off, u##bits val, \
1477 struct btrfs_map_token *token); \
1cbb1f45
JM
1478static inline u##bits btrfs_get_##bits(const struct extent_buffer *eb, \
1479 const void *ptr, \
18077bb4
LZ
1480 unsigned long off) \
1481{ \
1482 return btrfs_get_token_##bits(eb, ptr, off, NULL); \
1483} \
1cbb1f45 1484static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr,\
18077bb4
LZ
1485 unsigned long off, u##bits val) \
1486{ \
1487 btrfs_set_token_##bits(eb, ptr, off, val, NULL); \
1488}
1489
1490DECLARE_BTRFS_SETGET_BITS(8)
1491DECLARE_BTRFS_SETGET_BITS(16)
1492DECLARE_BTRFS_SETGET_BITS(32)
1493DECLARE_BTRFS_SETGET_BITS(64)
1494
5f39d397 1495#define BTRFS_SETGET_FUNCS(name, type, member, bits) \
1cbb1f45
JM
1496static inline u##bits btrfs_##name(const struct extent_buffer *eb, \
1497 const type *s) \
18077bb4
LZ
1498{ \
1499 BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
1500 return btrfs_get_##bits(eb, s, offsetof(type, member)); \
1501} \
1502static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \
1503 u##bits val) \
1504{ \
1505 BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
1506 btrfs_set_##bits(eb, s, offsetof(type, member), val); \
1507} \
1cbb1f45
JM
1508static inline u##bits btrfs_token_##name(const struct extent_buffer *eb,\
1509 const type *s, \
18077bb4
LZ
1510 struct btrfs_map_token *token) \
1511{ \
1512 BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
1513 return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \
1514} \
1515static inline void btrfs_set_token_##name(struct extent_buffer *eb, \
1516 type *s, u##bits val, \
1517 struct btrfs_map_token *token) \
1518{ \
1519 BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
1520 btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \
1521}
5f39d397
CM
1522
1523#define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
1cbb1f45 1524static inline u##bits btrfs_##name(const struct extent_buffer *eb) \
5f39d397 1525{ \
1cbb1f45 1526 const type *p = page_address(eb->pages[0]); \
df68b8a7 1527 u##bits res = le##bits##_to_cpu(p->member); \
810191ff 1528 return res; \
5f39d397
CM
1529} \
1530static inline void btrfs_set_##name(struct extent_buffer *eb, \
1531 u##bits val) \
1532{ \
727011e0 1533 type *p = page_address(eb->pages[0]); \
df68b8a7 1534 p->member = cpu_to_le##bits(val); \
5f39d397 1535}
9078a3e1 1536
5f39d397 1537#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
1cbb1f45 1538static inline u##bits btrfs_##name(const type *s) \
5f39d397
CM
1539{ \
1540 return le##bits##_to_cpu(s->member); \
1541} \
1542static inline void btrfs_set_##name(type *s, u##bits val) \
1543{ \
1544 s->member = cpu_to_le##bits(val); \
1e1d2701
CM
1545}
1546
eca152ed
NB
1547
1548static inline u64 btrfs_device_total_bytes(struct extent_buffer *eb,
1549 struct btrfs_dev_item *s)
1550{
1551 BUILD_BUG_ON(sizeof(u64) !=
1552 sizeof(((struct btrfs_dev_item *)0))->total_bytes);
1553 return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item,
1554 total_bytes));
1555}
1556static inline void btrfs_set_device_total_bytes(struct extent_buffer *eb,
1557 struct btrfs_dev_item *s,
1558 u64 val)
1559{
1560 BUILD_BUG_ON(sizeof(u64) !=
1561 sizeof(((struct btrfs_dev_item *)0))->total_bytes);
7dfb8be1 1562 WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize));
eca152ed
NB
1563 btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val);
1564}
1565
1566
0b86a832 1567BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64);
0b86a832
CM
1568BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64);
1569BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32);
1570BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32);
c3027eb5
CM
1571BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item,
1572 start_offset, 64);
0b86a832
CM
1573BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32);
1574BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64);
e17cade2
CM
1575BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32);
1576BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8);
1577BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8);
2b82032c 1578BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64);
0b86a832 1579
8a4b83cc
CM
1580BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64);
1581BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item,
1582 total_bytes, 64);
1583BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item,
1584 bytes_used, 64);
1585BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item,
1586 io_align, 32);
1587BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item,
1588 io_width, 32);
1589BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item,
1590 sector_size, 32);
1591BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64);
e17cade2
CM
1592BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item,
1593 dev_group, 32);
1594BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item,
1595 seek_speed, 8);
1596BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item,
1597 bandwidth, 8);
2b82032c
YZ
1598BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item,
1599 generation, 64);
8a4b83cc 1600
410ba3a2 1601static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d)
0b86a832 1602{
410ba3a2 1603 return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid);
0b86a832
CM
1604}
1605
1473b24e 1606static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d)
2b82032c 1607{
1473b24e 1608 return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid);
2b82032c
YZ
1609}
1610
e17cade2 1611BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64);
0b86a832
CM
1612BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64);
1613BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64);
1614BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32);
1615BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32);
1616BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32);
1617BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64);
1618BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16);
321aecc6 1619BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16);
0b86a832
CM
1620BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64);
1621BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64);
1622
e17cade2
CM
1623static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s)
1624{
1625 return (char *)s + offsetof(struct btrfs_stripe, dev_uuid);
1626}
1627
1628BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64);
0b86a832
CM
1629BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64);
1630BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk,
1631 stripe_len, 64);
1632BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk,
1633 io_align, 32);
1634BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk,
1635 io_width, 32);
1636BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk,
1637 sector_size, 32);
1638BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64);
1639BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk,
1640 num_stripes, 16);
321aecc6
CM
1641BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk,
1642 sub_stripes, 16);
0b86a832
CM
1643BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64);
1644BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64);
1645
1646static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c,
1647 int nr)
1648{
1649 unsigned long offset = (unsigned long)c;
1650 offset += offsetof(struct btrfs_chunk, stripe);
1651 offset += nr * sizeof(struct btrfs_stripe);
1652 return (struct btrfs_stripe *)offset;
1653}
1654
a443755f
CM
1655static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr)
1656{
1657 return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr));
1658}
1659
0b86a832
CM
1660static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb,
1661 struct btrfs_chunk *c, int nr)
1662{
1663 return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr));
1664}
1665
0b86a832
CM
1666static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb,
1667 struct btrfs_chunk *c, int nr)
1668{
1669 return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr));
1670}
1671
5f39d397
CM
1672/* struct btrfs_block_group_item */
1673BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item,
1674 used, 64);
1675BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item,
1676 used, 64);
0b86a832
CM
1677BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid,
1678 struct btrfs_block_group_item, chunk_objectid, 64);
e17cade2
CM
1679
1680BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid,
0b86a832
CM
1681 struct btrfs_block_group_item, chunk_objectid, 64);
1682BTRFS_SETGET_FUNCS(disk_block_group_flags,
1683 struct btrfs_block_group_item, flags, 64);
1684BTRFS_SETGET_STACK_FUNCS(block_group_flags,
1685 struct btrfs_block_group_item, flags, 64);
1e1d2701 1686
208acb8c
OS
1687/* struct btrfs_free_space_info */
1688BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info,
1689 extent_count, 32);
1690BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32);
1691
3954401f
CM
1692/* struct btrfs_inode_ref */
1693BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16);
aec7477b 1694BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64);
3954401f 1695
f186373f
MF
1696/* struct btrfs_inode_extref */
1697BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref,
1698 parent_objectid, 64);
1699BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref,
1700 name_len, 16);
1701BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64);
1702
5f39d397
CM
1703/* struct btrfs_inode_item */
1704BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64);
c3027eb5 1705BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64);
e02119d5 1706BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64);
5f39d397 1707BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64);
a76a3cd4 1708BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64);
5f39d397
CM
1709BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64);
1710BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32);
1711BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32);
1712BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32);
1713BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32);
0b86a832 1714BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64);
f2b636e8 1715BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64);
3cae210f
QW
1716BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item,
1717 generation, 64);
1718BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item,
1719 sequence, 64);
1720BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item,
1721 transid, 64);
1722BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64);
1723BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item,
1724 nbytes, 64);
1725BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item,
1726 block_group, 64);
1727BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32);
1728BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32);
1729BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32);
1730BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32);
1731BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64);
1732BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64);
0b86a832
CM
1733BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64);
1734BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32);
3cae210f
QW
1735BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64);
1736BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32);
e20d96d6 1737
0b86a832 1738/* struct btrfs_dev_extent */
e17cade2
CM
1739BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent,
1740 chunk_tree, 64);
1741BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent,
1742 chunk_objectid, 64);
1743BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent,
1744 chunk_offset, 64);
0b86a832
CM
1745BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64);
1746
231e88f4 1747static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev)
e17cade2
CM
1748{
1749 unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid);
231e88f4 1750 return (unsigned long)dev + ptr;
e17cade2
CM
1751}
1752
5d4f98a2
YZ
1753BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64);
1754BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item,
1755 generation, 64);
1756BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64);
74493f7a 1757
5d4f98a2
YZ
1758BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32);
1759
1760
1761BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8);
1762
1763static inline void btrfs_tree_block_key(struct extent_buffer *eb,
1764 struct btrfs_tree_block_info *item,
1765 struct btrfs_disk_key *key)
1766{
1767 read_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
1768}
1769
1770static inline void btrfs_set_tree_block_key(struct extent_buffer *eb,
1771 struct btrfs_tree_block_info *item,
1772 struct btrfs_disk_key *key)
1773{
1774 write_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
1775}
e20d96d6 1776
5d4f98a2
YZ
1777BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref,
1778 root, 64);
1779BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref,
1780 objectid, 64);
1781BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref,
1782 offset, 64);
1783BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref,
1784 count, 32);
1785
1786BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref,
1787 count, 32);
1788
1789BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref,
1790 type, 8);
1791BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref,
1792 offset, 64);
1793
1794static inline u32 btrfs_extent_inline_ref_size(int type)
1795{
1796 if (type == BTRFS_TREE_BLOCK_REF_KEY ||
1797 type == BTRFS_SHARED_BLOCK_REF_KEY)
1798 return sizeof(struct btrfs_extent_inline_ref);
1799 if (type == BTRFS_SHARED_DATA_REF_KEY)
1800 return sizeof(struct btrfs_shared_data_ref) +
1801 sizeof(struct btrfs_extent_inline_ref);
1802 if (type == BTRFS_EXTENT_DATA_REF_KEY)
1803 return sizeof(struct btrfs_extent_data_ref) +
1804 offsetof(struct btrfs_extent_inline_ref, offset);
5d4f98a2
YZ
1805 return 0;
1806}
1807
1808BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64);
1809BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0,
1810 generation, 64);
1811BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64);
1812BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32);
e20d96d6 1813
5f39d397
CM
1814/* struct btrfs_node */
1815BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64);
74493f7a 1816BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64);
3cae210f
QW
1817BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr,
1818 blockptr, 64);
1819BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr,
1820 generation, 64);
e20d96d6 1821
5f39d397 1822static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr)
cf27e1ee 1823{
5f39d397
CM
1824 unsigned long ptr;
1825 ptr = offsetof(struct btrfs_node, ptrs) +
1826 sizeof(struct btrfs_key_ptr) * nr;
1827 return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr);
cf27e1ee
CM
1828}
1829
5f39d397
CM
1830static inline void btrfs_set_node_blockptr(struct extent_buffer *eb,
1831 int nr, u64 val)
cf27e1ee 1832{
5f39d397
CM
1833 unsigned long ptr;
1834 ptr = offsetof(struct btrfs_node, ptrs) +
1835 sizeof(struct btrfs_key_ptr) * nr;
1836 btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val);
cf27e1ee
CM
1837}
1838
74493f7a
CM
1839static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr)
1840{
1841 unsigned long ptr;
1842 ptr = offsetof(struct btrfs_node, ptrs) +
1843 sizeof(struct btrfs_key_ptr) * nr;
1844 return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr);
1845}
1846
1847static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb,
1848 int nr, u64 val)
1849{
1850 unsigned long ptr;
1851 ptr = offsetof(struct btrfs_node, ptrs) +
1852 sizeof(struct btrfs_key_ptr) * nr;
1853 btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val);
1854}
1855
810191ff 1856static inline unsigned long btrfs_node_key_ptr_offset(int nr)
4d775673 1857{
5f39d397
CM
1858 return offsetof(struct btrfs_node, ptrs) +
1859 sizeof(struct btrfs_key_ptr) * nr;
4d775673
CM
1860}
1861
1cbb1f45 1862void btrfs_node_key(const struct extent_buffer *eb,
e644d021
CM
1863 struct btrfs_disk_key *disk_key, int nr);
1864
5f39d397
CM
1865static inline void btrfs_set_node_key(struct extent_buffer *eb,
1866 struct btrfs_disk_key *disk_key, int nr)
1d4f8a0c 1867{
5f39d397
CM
1868 unsigned long ptr;
1869 ptr = btrfs_node_key_ptr_offset(nr);
1870 write_eb_member(eb, (struct btrfs_key_ptr *)ptr,
1871 struct btrfs_key_ptr, key, disk_key);
1d4f8a0c
CM
1872}
1873
5f39d397
CM
1874/* struct btrfs_item */
1875BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32);
1876BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32);
3cae210f
QW
1877BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32);
1878BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32);
4d775673 1879
5f39d397 1880static inline unsigned long btrfs_item_nr_offset(int nr)
1d4f8a0c 1881{
5f39d397
CM
1882 return offsetof(struct btrfs_leaf, items) +
1883 sizeof(struct btrfs_item) * nr;
1d4f8a0c
CM
1884}
1885
dd3cc16b 1886static inline struct btrfs_item *btrfs_item_nr(int nr)
0783fcfc 1887{
5f39d397 1888 return (struct btrfs_item *)btrfs_item_nr_offset(nr);
0783fcfc
CM
1889}
1890
1cbb1f45 1891static inline u32 btrfs_item_end(const struct extent_buffer *eb,
5f39d397 1892 struct btrfs_item *item)
0783fcfc 1893{
5f39d397 1894 return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item);
0783fcfc
CM
1895}
1896
1cbb1f45 1897static inline u32 btrfs_item_end_nr(const struct extent_buffer *eb, int nr)
0783fcfc 1898{
dd3cc16b 1899 return btrfs_item_end(eb, btrfs_item_nr(nr));
0783fcfc
CM
1900}
1901
1cbb1f45 1902static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr)
0783fcfc 1903{
dd3cc16b 1904 return btrfs_item_offset(eb, btrfs_item_nr(nr));
0783fcfc
CM
1905}
1906
1cbb1f45 1907static inline u32 btrfs_item_size_nr(const struct extent_buffer *eb, int nr)
0783fcfc 1908{
dd3cc16b 1909 return btrfs_item_size(eb, btrfs_item_nr(nr));
0783fcfc
CM
1910}
1911
1cbb1f45 1912static inline void btrfs_item_key(const struct extent_buffer *eb,
5f39d397 1913 struct btrfs_disk_key *disk_key, int nr)
1d4f6404 1914{
dd3cc16b 1915 struct btrfs_item *item = btrfs_item_nr(nr);
5f39d397 1916 read_eb_member(eb, item, struct btrfs_item, key, disk_key);
1d4f6404
CM
1917}
1918
5f39d397
CM
1919static inline void btrfs_set_item_key(struct extent_buffer *eb,
1920 struct btrfs_disk_key *disk_key, int nr)
1d4f6404 1921{
dd3cc16b 1922 struct btrfs_item *item = btrfs_item_nr(nr);
5f39d397 1923 write_eb_member(eb, item, struct btrfs_item, key, disk_key);
1d4f6404
CM
1924}
1925
e02119d5
CM
1926BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64);
1927
0660b5af
CM
1928/*
1929 * struct btrfs_root_ref
1930 */
1931BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64);
1932BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64);
1933BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16);
1934
5f39d397 1935/* struct btrfs_dir_item */
5103e947 1936BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16);
5f39d397
CM
1937BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8);
1938BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16);
e02119d5 1939BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64);
3cae210f
QW
1940BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8);
1941BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item,
1942 data_len, 16);
1943BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item,
1944 name_len, 16);
1945BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item,
1946 transid, 64);
1d4f6404 1947
1cbb1f45
JM
1948static inline void btrfs_dir_item_key(const struct extent_buffer *eb,
1949 const struct btrfs_dir_item *item,
5f39d397 1950 struct btrfs_disk_key *key)
1d4f6404 1951{
5f39d397 1952 read_eb_member(eb, item, struct btrfs_dir_item, location, key);
1d4f6404
CM
1953}
1954
5f39d397
CM
1955static inline void btrfs_set_dir_item_key(struct extent_buffer *eb,
1956 struct btrfs_dir_item *item,
1cbb1f45 1957 const struct btrfs_disk_key *key)
a8a2ee0c 1958{
5f39d397 1959 write_eb_member(eb, item, struct btrfs_dir_item, location, key);
a8a2ee0c
CM
1960}
1961
0af3d00b
JB
1962BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header,
1963 num_entries, 64);
1964BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header,
1965 num_bitmaps, 64);
1966BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header,
1967 generation, 64);
1968
1cbb1f45
JM
1969static inline void btrfs_free_space_key(const struct extent_buffer *eb,
1970 const struct btrfs_free_space_header *h,
0af3d00b
JB
1971 struct btrfs_disk_key *key)
1972{
1973 read_eb_member(eb, h, struct btrfs_free_space_header, location, key);
1974}
1975
1976static inline void btrfs_set_free_space_key(struct extent_buffer *eb,
1977 struct btrfs_free_space_header *h,
1cbb1f45 1978 const struct btrfs_disk_key *key)
0af3d00b
JB
1979{
1980 write_eb_member(eb, h, struct btrfs_free_space_header, location, key);
1981}
1982
5f39d397
CM
1983/* struct btrfs_disk_key */
1984BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key,
1985 objectid, 64);
1986BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64);
1987BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8);
1d4f6404 1988
e2fa7227 1989static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu,
310712b2 1990 const struct btrfs_disk_key *disk)
e2fa7227
CM
1991{
1992 cpu->offset = le64_to_cpu(disk->offset);
5f39d397 1993 cpu->type = disk->type;
e2fa7227
CM
1994 cpu->objectid = le64_to_cpu(disk->objectid);
1995}
1996
1997static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk,
310712b2 1998 const struct btrfs_key *cpu)
e2fa7227
CM
1999{
2000 disk->offset = cpu_to_le64(cpu->offset);
5f39d397 2001 disk->type = cpu->type;
e2fa7227
CM
2002 disk->objectid = cpu_to_le64(cpu->objectid);
2003}
2004
1cbb1f45
JM
2005static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb,
2006 struct btrfs_key *key, int nr)
7f5c1516 2007{
5f39d397
CM
2008 struct btrfs_disk_key disk_key;
2009 btrfs_node_key(eb, &disk_key, nr);
2010 btrfs_disk_key_to_cpu(key, &disk_key);
7f5c1516
CM
2011}
2012
1cbb1f45
JM
2013static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb,
2014 struct btrfs_key *key, int nr)
7f5c1516 2015{
5f39d397
CM
2016 struct btrfs_disk_key disk_key;
2017 btrfs_item_key(eb, &disk_key, nr);
2018 btrfs_disk_key_to_cpu(key, &disk_key);
7f5c1516
CM
2019}
2020
1cbb1f45
JM
2021static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb,
2022 const struct btrfs_dir_item *item,
2023 struct btrfs_key *key)
4d775673 2024{
5f39d397
CM
2025 struct btrfs_disk_key disk_key;
2026 btrfs_dir_item_key(eb, item, &disk_key);
2027 btrfs_disk_key_to_cpu(key, &disk_key);
4d775673
CM
2028}
2029
310712b2 2030static inline u8 btrfs_key_type(const struct btrfs_key *key)
3768f368 2031{
5f39d397 2032 return key->type;
3768f368
CM
2033}
2034
5f39d397 2035static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val)
3768f368 2036{
5f39d397 2037 key->type = val;
3768f368
CM
2038}
2039
5f39d397 2040/* struct btrfs_header */
db94535d 2041BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64);
5f39d397
CM
2042BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header,
2043 generation, 64);
2044BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64);
2045BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32);
63b10fc4 2046BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64);
5f39d397 2047BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8);
3cae210f
QW
2048BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header,
2049 generation, 64);
2050BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64);
2051BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header,
2052 nritems, 32);
2053BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64);
0f7d52f4 2054
1cbb1f45 2055static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag)
63b10fc4
CM
2056{
2057 return (btrfs_header_flags(eb) & flag) == flag;
2058}
2059
2060static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag)
2061{
2062 u64 flags = btrfs_header_flags(eb);
2063 btrfs_set_header_flags(eb, flags | flag);
2064 return (flags & flag) == flag;
2065}
2066
2067static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag)
2068{
2069 u64 flags = btrfs_header_flags(eb);
2070 btrfs_set_header_flags(eb, flags & ~flag);
2071 return (flags & flag) == flag;
2072}
2073
1cbb1f45 2074static inline int btrfs_header_backref_rev(const struct extent_buffer *eb)
5d4f98a2
YZ
2075{
2076 u64 flags = btrfs_header_flags(eb);
2077 return flags >> BTRFS_BACKREF_REV_SHIFT;
2078}
2079
2080static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb,
2081 int rev)
2082{
2083 u64 flags = btrfs_header_flags(eb);
2084 flags &= ~BTRFS_BACKREF_REV_MASK;
2085 flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT;
2086 btrfs_set_header_flags(eb, flags);
2087}
2088
0a4e5586 2089static inline unsigned long btrfs_header_fsid(void)
0f7d52f4 2090{
fba6aa75 2091 return offsetof(struct btrfs_header, fsid);
0f7d52f4
CM
2092}
2093
1cbb1f45 2094static inline unsigned long btrfs_header_chunk_tree_uuid(const struct extent_buffer *eb)
e17cade2 2095{
b308bc2f 2096 return offsetof(struct btrfs_header, chunk_tree_uuid);
e17cade2
CM
2097}
2098
1cbb1f45 2099static inline int btrfs_is_leaf(const struct extent_buffer *eb)
3768f368 2100{
d397712b 2101 return btrfs_header_level(eb) == 0;
3768f368
CM
2102}
2103
5f39d397 2104/* struct btrfs_root_item */
84234f3a
YZ
2105BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item,
2106 generation, 64);
5f39d397 2107BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32);
db94535d
CM
2108BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64);
2109BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8);
3768f368 2110
84234f3a
YZ
2111BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item,
2112 generation, 64);
db94535d
CM
2113BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64);
2114BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8);
5f39d397
CM
2115BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64);
2116BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32);
f2b636e8 2117BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64);
db94535d
CM
2118BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64);
2119BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64);
80ff3856
YZ
2120BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item,
2121 last_snapshot, 64);
8ea05e3a
AB
2122BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item,
2123 generation_v2, 64);
2124BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item,
2125 ctransid, 64);
2126BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item,
2127 otransid, 64);
2128BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item,
2129 stransid, 64);
2130BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item,
2131 rtransid, 64);
123abc88 2132
1cbb1f45 2133static inline bool btrfs_root_readonly(const struct btrfs_root *root)
b83cc969 2134{
6ed3cf2c 2135 return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0;
b83cc969
LZ
2136}
2137
1cbb1f45 2138static inline bool btrfs_root_dead(const struct btrfs_root *root)
521e0546
DS
2139{
2140 return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0;
2141}
2142
af31f5e5
CM
2143/* struct btrfs_root_backup */
2144BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup,
2145 tree_root, 64);
2146BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup,
2147 tree_root_gen, 64);
2148BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup,
2149 tree_root_level, 8);
2150
2151BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup,
2152 chunk_root, 64);
2153BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup,
2154 chunk_root_gen, 64);
2155BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup,
2156 chunk_root_level, 8);
2157
2158BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup,
2159 extent_root, 64);
2160BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup,
2161 extent_root_gen, 64);
2162BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup,
2163 extent_root_level, 8);
2164
2165BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup,
2166 fs_root, 64);
2167BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup,
2168 fs_root_gen, 64);
2169BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup,
2170 fs_root_level, 8);
2171
2172BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup,
2173 dev_root, 64);
2174BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup,
2175 dev_root_gen, 64);
2176BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup,
2177 dev_root_level, 8);
2178
2179BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup,
2180 csum_root, 64);
2181BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup,
2182 csum_root_gen, 64);
2183BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup,
2184 csum_root_level, 8);
2185BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup,
2186 total_bytes, 64);
2187BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup,
2188 bytes_used, 64);
2189BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup,
2190 num_devices, 64);
2191
0940ebf6
ID
2192/* struct btrfs_balance_item */
2193BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64);
607d432d 2194
1cbb1f45
JM
2195static inline void btrfs_balance_data(const struct extent_buffer *eb,
2196 const struct btrfs_balance_item *bi,
0940ebf6
ID
2197 struct btrfs_disk_balance_args *ba)
2198{
2199 read_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
2200}
2201
2202static inline void btrfs_set_balance_data(struct extent_buffer *eb,
1cbb1f45
JM
2203 struct btrfs_balance_item *bi,
2204 const struct btrfs_disk_balance_args *ba)
0940ebf6
ID
2205{
2206 write_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
2207}
2208
1cbb1f45
JM
2209static inline void btrfs_balance_meta(const struct extent_buffer *eb,
2210 const struct btrfs_balance_item *bi,
0940ebf6
ID
2211 struct btrfs_disk_balance_args *ba)
2212{
2213 read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
2214}
2215
2216static inline void btrfs_set_balance_meta(struct extent_buffer *eb,
1cbb1f45
JM
2217 struct btrfs_balance_item *bi,
2218 const struct btrfs_disk_balance_args *ba)
0940ebf6
ID
2219{
2220 write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
2221}
2222
1cbb1f45
JM
2223static inline void btrfs_balance_sys(const struct extent_buffer *eb,
2224 const struct btrfs_balance_item *bi,
0940ebf6
ID
2225 struct btrfs_disk_balance_args *ba)
2226{
2227 read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
2228}
2229
2230static inline void btrfs_set_balance_sys(struct extent_buffer *eb,
1cbb1f45
JM
2231 struct btrfs_balance_item *bi,
2232 const struct btrfs_disk_balance_args *ba)
0940ebf6
ID
2233{
2234 write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
2235}
2236
2237static inline void
2238btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu,
1cbb1f45 2239 const struct btrfs_disk_balance_args *disk)
0940ebf6
ID
2240{
2241 memset(cpu, 0, sizeof(*cpu));
2242
2243 cpu->profiles = le64_to_cpu(disk->profiles);
2244 cpu->usage = le64_to_cpu(disk->usage);
2245 cpu->devid = le64_to_cpu(disk->devid);
2246 cpu->pstart = le64_to_cpu(disk->pstart);
2247 cpu->pend = le64_to_cpu(disk->pend);
2248 cpu->vstart = le64_to_cpu(disk->vstart);
2249 cpu->vend = le64_to_cpu(disk->vend);
2250 cpu->target = le64_to_cpu(disk->target);
2251 cpu->flags = le64_to_cpu(disk->flags);
7d824b6f 2252 cpu->limit = le64_to_cpu(disk->limit);
ed0df618
DS
2253 cpu->stripes_min = le32_to_cpu(disk->stripes_min);
2254 cpu->stripes_max = le32_to_cpu(disk->stripes_max);
0940ebf6
ID
2255}
2256
2257static inline void
2258btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk,
1cbb1f45 2259 const struct btrfs_balance_args *cpu)
0940ebf6
ID
2260{
2261 memset(disk, 0, sizeof(*disk));
2262
2263 disk->profiles = cpu_to_le64(cpu->profiles);
2264 disk->usage = cpu_to_le64(cpu->usage);
2265 disk->devid = cpu_to_le64(cpu->devid);
2266 disk->pstart = cpu_to_le64(cpu->pstart);
2267 disk->pend = cpu_to_le64(cpu->pend);
2268 disk->vstart = cpu_to_le64(cpu->vstart);
2269 disk->vend = cpu_to_le64(cpu->vend);
2270 disk->target = cpu_to_le64(cpu->target);
2271 disk->flags = cpu_to_le64(cpu->flags);
7d824b6f 2272 disk->limit = cpu_to_le64(cpu->limit);
ed0df618
DS
2273 disk->stripes_min = cpu_to_le32(cpu->stripes_min);
2274 disk->stripes_max = cpu_to_le32(cpu->stripes_max);
0940ebf6
ID
2275}
2276
2277/* struct btrfs_super_block */
db94535d 2278BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64);
a061fc8d 2279BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64);
5f39d397
CM
2280BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block,
2281 generation, 64);
2282BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64);
0b86a832
CM
2283BTRFS_SETGET_STACK_FUNCS(super_sys_array_size,
2284 struct btrfs_super_block, sys_chunk_array_size, 32);
84234f3a
YZ
2285BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation,
2286 struct btrfs_super_block, chunk_root_generation, 64);
db94535d
CM
2287BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block,
2288 root_level, 8);
0b86a832
CM
2289BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block,
2290 chunk_root, 64);
2291BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block,
e02119d5
CM
2292 chunk_root_level, 8);
2293BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block,
2294 log_root, 64);
c3027eb5
CM
2295BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block,
2296 log_root_transid, 64);
e02119d5
CM
2297BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block,
2298 log_root_level, 8);
db94535d
CM
2299BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block,
2300 total_bytes, 64);
2301BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block,
2302 bytes_used, 64);
5f39d397
CM
2303BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block,
2304 sectorsize, 32);
2305BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block,
2306 nodesize, 32);
87ee04eb
CM
2307BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block,
2308 stripesize, 32);
5f39d397
CM
2309BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block,
2310 root_dir_objectid, 64);
8a4b83cc
CM
2311BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block,
2312 num_devices, 64);
f2b636e8
JB
2313BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block,
2314 compat_flags, 64);
2315BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block,
12534832 2316 compat_ro_flags, 64);
f2b636e8
JB
2317BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block,
2318 incompat_flags, 64);
607d432d
JB
2319BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block,
2320 csum_type, 16);
0af3d00b
JB
2321BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block,
2322 cache_generation, 64);
3cae210f 2323BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64);
26432799
SB
2324BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block,
2325 uuid_tree_generation, 64);
607d432d 2326
1cbb1f45 2327static inline int btrfs_super_csum_size(const struct btrfs_super_block *s)
607d432d 2328{
1104a885
DS
2329 u16 t = btrfs_super_csum_type(s);
2330 /*
2331 * csum type is validated at mount time
2332 */
607d432d
JB
2333 return btrfs_csum_sizes[t];
2334}
2e635a27 2335
2e635a27 2336
851cd173
LB
2337/*
2338 * The leaf data grows from end-to-front in the node.
2339 * this returns the address of the start of the last item,
2340 * which is the stop of the leaf data stack
2341 */
1cbb1f45
JM
2342static inline unsigned int leaf_data_end(const struct btrfs_fs_info *fs_info,
2343 const struct extent_buffer *leaf)
851cd173
LB
2344{
2345 u32 nr = btrfs_header_nritems(leaf);
2346
2347 if (nr == 0)
0b246afa 2348 return BTRFS_LEAF_DATA_SIZE(fs_info);
851cd173
LB
2349 return btrfs_item_offset_nr(leaf, nr - 1);
2350}
2351
5f39d397
CM
2352/* struct btrfs_file_extent_item */
2353BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8);
3cae210f
QW
2354BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr,
2355 struct btrfs_file_extent_item, disk_bytenr, 64);
2356BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset,
2357 struct btrfs_file_extent_item, offset, 64);
2358BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation,
2359 struct btrfs_file_extent_item, generation, 64);
2360BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes,
2361 struct btrfs_file_extent_item, num_bytes, 64);
e20d6c5b
JB
2362BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes,
2363 struct btrfs_file_extent_item, disk_num_bytes, 64);
2364BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression,
2365 struct btrfs_file_extent_item, compression, 8);
9f5fae2f 2366
d397712b 2367static inline unsigned long
1cbb1f45 2368btrfs_file_extent_inline_start(const struct btrfs_file_extent_item *e)
236454df 2369{
7ec20afb 2370 return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START;
236454df
CM
2371}
2372
2373static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)
2374{
7ec20afb 2375 return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize;
9f5fae2f
CM
2376}
2377
db94535d
CM
2378BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item,
2379 disk_bytenr, 64);
5f39d397
CM
2380BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item,
2381 generation, 64);
db94535d
CM
2382BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item,
2383 disk_num_bytes, 64);
5f39d397
CM
2384BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item,
2385 offset, 64);
db94535d
CM
2386BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item,
2387 num_bytes, 64);
c8b97818
CM
2388BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item,
2389 ram_bytes, 64);
2390BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item,
2391 compression, 8);
2392BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item,
2393 encryption, 8);
2394BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item,
2395 other_encoding, 16);
2396
c8b97818
CM
2397/*
2398 * this returns the number of bytes used by the item on disk, minus the
2399 * size of any extent headers. If a file is compressed on disk, this is
2400 * the compressed size
2401 */
1cbb1f45
JM
2402static inline u32 btrfs_file_extent_inline_item_len(
2403 const struct extent_buffer *eb,
2404 struct btrfs_item *e)
c8b97818 2405{
7ec20afb 2406 return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
c8b97818 2407}
9f5fae2f 2408
514ac8ad
CM
2409/* this returns the number of file bytes represented by the inline item.
2410 * If an item is compressed, this is the uncompressed size
2411 */
1cbb1f45
JM
2412static inline u32 btrfs_file_extent_inline_len(const struct extent_buffer *eb,
2413 int slot,
2414 const struct btrfs_file_extent_item *fi)
514ac8ad
CM
2415{
2416 struct btrfs_map_token token;
2417
2418 btrfs_init_map_token(&token);
2419 /*
2420 * return the space used on disk if this item isn't
2421 * compressed or encoded
2422 */
2423 if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 &&
2424 btrfs_token_file_extent_encryption(eb, fi, &token) == 0 &&
2425 btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) {
2426 return btrfs_file_extent_inline_item_len(eb,
2427 btrfs_item_nr(slot));
2428 }
2429
2430 /* otherwise use the ram bytes field */
2431 return btrfs_token_file_extent_ram_bytes(eb, fi, &token);
2432}
2433
2434
733f4fbb 2435/* btrfs_dev_stats_item */
1cbb1f45
JM
2436static inline u64 btrfs_dev_stats_value(const struct extent_buffer *eb,
2437 const struct btrfs_dev_stats_item *ptr,
733f4fbb
SB
2438 int index)
2439{
2440 u64 val;
2441
2442 read_extent_buffer(eb, &val,
2443 offsetof(struct btrfs_dev_stats_item, values) +
2444 ((unsigned long)ptr) + (index * sizeof(u64)),
2445 sizeof(val));
2446 return val;
2447}
2448
2449static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb,
2450 struct btrfs_dev_stats_item *ptr,
2451 int index, u64 val)
2452{
2453 write_extent_buffer(eb, &val,
2454 offsetof(struct btrfs_dev_stats_item, values) +
2455 ((unsigned long)ptr) + (index * sizeof(u64)),
2456 sizeof(val));
2457}
2458
630dc772
AJ
2459/* btrfs_qgroup_status_item */
2460BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item,
2461 generation, 64);
2462BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item,
2463 version, 64);
2464BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item,
2465 flags, 64);
2f232036
JS
2466BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item,
2467 rescan, 64);
630dc772
AJ
2468
2469/* btrfs_qgroup_info_item */
2470BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item,
2471 generation, 64);
2472BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64);
2473BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item,
2474 rfer_cmpr, 64);
2475BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64);
2476BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item,
2477 excl_cmpr, 64);
2478
2479BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation,
2480 struct btrfs_qgroup_info_item, generation, 64);
2481BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item,
2482 rfer, 64);
2483BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr,
2484 struct btrfs_qgroup_info_item, rfer_cmpr, 64);
2485BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item,
2486 excl, 64);
2487BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr,
2488 struct btrfs_qgroup_info_item, excl_cmpr, 64);
2489
2490/* btrfs_qgroup_limit_item */
2491BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item,
2492 flags, 64);
2493BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item,
2494 max_rfer, 64);
2495BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item,
2496 max_excl, 64);
2497BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item,
2498 rsv_rfer, 64);
2499BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item,
2500 rsv_excl, 64);
2501
a2bff640
SB
2502/* btrfs_dev_replace_item */
2503BTRFS_SETGET_FUNCS(dev_replace_src_devid,
2504 struct btrfs_dev_replace_item, src_devid, 64);
2505BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode,
2506 struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode,
2507 64);
2508BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item,
2509 replace_state, 64);
2510BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item,
2511 time_started, 64);
2512BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item,
2513 time_stopped, 64);
2514BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item,
2515 num_write_errors, 64);
2516BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors,
2517 struct btrfs_dev_replace_item, num_uncorrectable_read_errors,
2518 64);
2519BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item,
2520 cursor_left, 64);
2521BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item,
2522 cursor_right, 64);
2523
2524BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid,
2525 struct btrfs_dev_replace_item, src_devid, 64);
2526BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode,
2527 struct btrfs_dev_replace_item,
2528 cont_reading_from_srcdev_mode, 64);
2529BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state,
2530 struct btrfs_dev_replace_item, replace_state, 64);
2531BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started,
2532 struct btrfs_dev_replace_item, time_started, 64);
2533BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped,
2534 struct btrfs_dev_replace_item, time_stopped, 64);
2535BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors,
2536 struct btrfs_dev_replace_item, num_write_errors, 64);
2537BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors,
2538 struct btrfs_dev_replace_item,
2539 num_uncorrectable_read_errors, 64);
2540BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left,
2541 struct btrfs_dev_replace_item, cursor_left, 64);
2542BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right,
2543 struct btrfs_dev_replace_item, cursor_right, 64);
2544
4beb1b8b
CM
2545/* helper function to cast into the data area of the leaf. */
2546#define btrfs_item_ptr(leaf, slot, type) \
3d9ec8c4 2547 ((type *)(BTRFS_LEAF_DATA_OFFSET + \
5f39d397
CM
2548 btrfs_item_offset_nr(leaf, slot)))
2549
2550#define btrfs_item_ptr_offset(leaf, slot) \
3d9ec8c4 2551 ((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \
5f39d397 2552 btrfs_item_offset_nr(leaf, slot)))
4beb1b8b 2553
67377734
JB
2554static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info)
2555{
2556 return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) &&
2557 (space_info->flags & BTRFS_BLOCK_GROUP_DATA));
2558}
2559
3b16a4e3
JB
2560static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping)
2561{
c62d2555 2562 return mapping_gfp_constraint(mapping, ~__GFP_FS);
3b16a4e3
JB
2563}
2564
b18c6685 2565/* extent-tree.c */
28f75a0e 2566
167ce953
LB
2567enum btrfs_inline_ref_type {
2568 BTRFS_REF_TYPE_INVALID = 0,
2569 BTRFS_REF_TYPE_BLOCK = 1,
2570 BTRFS_REF_TYPE_DATA = 2,
2571 BTRFS_REF_TYPE_ANY = 3,
2572};
2573
2574int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb,
2575 struct btrfs_extent_inline_ref *iref,
2576 enum btrfs_inline_ref_type is_data);
2577
2ff7e61e 2578u64 btrfs_csum_bytes_to_leaves(struct btrfs_fs_info *fs_info, u64 csum_bytes);
28f75a0e 2579
27965b6c 2580static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_fs_info *fs_info,
9e0baf60 2581 unsigned num_items)
16cdcec7 2582{
70e7af24 2583 return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * 2 * num_items;
07127184
JB
2584}
2585
2586/*
2587 * Doing a truncate won't result in new nodes or leaves, just what we need for
2588 * COW.
2589 */
27965b6c 2590static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_fs_info *fs_info,
07127184
JB
2591 unsigned num_items)
2592{
70e7af24 2593 return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items;
16cdcec7
MX
2594}
2595
1be41b78 2596int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans,
2ff7e61e 2597 struct btrfs_fs_info *fs_info);
0a2b2a84 2598int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans,
2ff7e61e 2599 struct btrfs_fs_info *fs_info);
9cfa3e34
FM
2600void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info,
2601 const u64 start);
2602void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg);
f78c436c
FM
2603bool btrfs_inc_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr);
2604void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr);
2605void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg);
fa9c0d79 2606void btrfs_put_block_group(struct btrfs_block_group_cache *cache);
56bec294 2607int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
2ff7e61e
JM
2608 struct btrfs_fs_info *fs_info, unsigned long count);
2609int btrfs_async_run_delayed_refs(struct btrfs_fs_info *fs_info,
31b9655f 2610 unsigned long count, u64 transid, int wait);
2ff7e61e 2611int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len);
a22285a6 2612int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans,
2ff7e61e 2613 struct btrfs_fs_info *fs_info, u64 bytenr,
3173a18f 2614 u64 offset, int metadata, u64 *refs, u64 *flags);
2ff7e61e 2615int btrfs_pin_extent(struct btrfs_fs_info *fs_info,
11833d66 2616 u64 bytenr, u64 num, int reserved);
2ff7e61e 2617int btrfs_pin_extent_for_log_replay(struct btrfs_fs_info *fs_info,
e688b725 2618 u64 bytenr, u64 num_bytes);
2ff7e61e 2619int btrfs_exclude_logged_extents(struct btrfs_fs_info *fs_info,
8c2a1a30 2620 struct extent_buffer *eb);
e4c3b2dc 2621int btrfs_cross_ref_exist(struct btrfs_root *root,
5d4f98a2 2622 u64 objectid, u64 offset, u64 bytenr);
d397712b
CM
2623struct btrfs_block_group_cache *btrfs_lookup_block_group(
2624 struct btrfs_fs_info *info,
2625 u64 bytenr);
758f2dfc 2626void btrfs_get_block_group(struct btrfs_block_group_cache *cache);
5d4f98a2 2627void btrfs_put_block_group(struct btrfs_block_group_cache *cache);
6ab0a202 2628int get_block_group_index(struct btrfs_block_group_cache *cache);
4d75f8a9 2629struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
310712b2
OS
2630 struct btrfs_root *root,
2631 u64 parent, u64 root_objectid,
2632 const struct btrfs_disk_key *key,
2633 int level, u64 hint,
2634 u64 empty_size);
f0486c68
YZ
2635void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
2636 struct btrfs_root *root,
2637 struct extent_buffer *buf,
5581a51a 2638 u64 parent, int last_ref);
5d4f98a2 2639int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
84f7d8e6 2640 struct btrfs_root *root, u64 owner,
5846a3c2
QW
2641 u64 offset, u64 ram_bytes,
2642 struct btrfs_key *ins);
5d4f98a2 2643int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
2ff7e61e 2644 struct btrfs_fs_info *fs_info,
5d4f98a2
YZ
2645 u64 root_objectid, u64 owner, u64 offset,
2646 struct btrfs_key *ins);
18513091 2647int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes,
00361589 2648 u64 min_alloc_size, u64 empty_size, u64 hint_byte,
e570fd27 2649 struct btrfs_key *ins, int is_data, int delalloc);
e089f05c 2650int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
e339a6b0 2651 struct extent_buffer *buf, int full_backref);
5d4f98a2 2652int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
e339a6b0 2653 struct extent_buffer *buf, int full_backref);
5d4f98a2 2654int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans,
2ff7e61e 2655 struct btrfs_fs_info *fs_info,
5d4f98a2 2656 u64 bytenr, u64 num_bytes, u64 flags,
b1c79e09 2657 int level, int is_data);
31840ae1 2658int btrfs_free_extent(struct btrfs_trans_handle *trans,
84f7d8e6 2659 struct btrfs_root *root,
66d7e7f0 2660 u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid,
b06c4bf5 2661 u64 owner, u64 offset);
5d4f98a2 2662
2ff7e61e
JM
2663int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info,
2664 u64 start, u64 len, int delalloc);
2665int btrfs_free_and_pin_reserved_extent(struct btrfs_fs_info *fs_info,
e688b725 2666 u64 start, u64 len);
8b74c03e 2667void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info);
ccd467d6 2668int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
2ff7e61e 2669 struct btrfs_fs_info *fs_info);
b18c6685 2670int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
84f7d8e6 2671 struct btrfs_root *root,
31840ae1 2672 u64 bytenr, u64 num_bytes, u64 parent,
b06c4bf5 2673 u64 root_objectid, u64 owner, u64 offset);
5d4f98a2 2674
1bbc621e 2675int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans,
2ff7e61e 2676 struct btrfs_fs_info *fs_info);
9078a3e1 2677int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans,
2ff7e61e 2678 struct btrfs_fs_info *fs_info);
dcdf7f6d 2679int btrfs_setup_space_cache(struct btrfs_trans_handle *trans,
2ff7e61e
JM
2680 struct btrfs_fs_info *fs_info);
2681int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr);
9078a3e1 2682int btrfs_free_block_groups(struct btrfs_fs_info *info);
5b4aacef 2683int btrfs_read_block_groups(struct btrfs_fs_info *info);
6bccf3ab 2684int btrfs_can_relocate(struct btrfs_fs_info *fs_info, u64 bytenr);
0b86a832 2685int btrfs_make_block_group(struct btrfs_trans_handle *trans,
2ff7e61e 2686 struct btrfs_fs_info *fs_info, u64 bytes_used,
0174484d 2687 u64 type, u64 chunk_offset, u64 size);
8eab77ff 2688struct btrfs_trans_handle *btrfs_start_trans_remove_block_group(
7fd01182
FM
2689 struct btrfs_fs_info *fs_info,
2690 const u64 chunk_offset);
1a40e23b 2691int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
6bccf3ab 2692 struct btrfs_fs_info *fs_info, u64 group_start,
04216820 2693 struct extent_map *em);
47ab2a6c 2694void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info);
e33e17ee
JM
2695void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache);
2696void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache);
ea658bad 2697void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans,
2ff7e61e 2698 struct btrfs_fs_info *fs_info);
1b86826d
JM
2699u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info);
2700u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info);
2701u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info);
4184ea7f 2702void btrfs_clear_space_info_full(struct btrfs_fs_info *info);
08e007d2
MX
2703
2704enum btrfs_reserve_flush_enum {
2705 /* If we are in the transaction, we can't flush anything.*/
2706 BTRFS_RESERVE_NO_FLUSH,
2707 /*
2708 * Flushing delalloc may cause deadlock somewhere, in this
2709 * case, use FLUSH LIMIT
2710 */
2711 BTRFS_RESERVE_FLUSH_LIMIT,
2712 BTRFS_RESERVE_FLUSH_ALL,
2713};
2714
f376df2b
JB
2715enum btrfs_flush_state {
2716 FLUSH_DELAYED_ITEMS_NR = 1,
2717 FLUSH_DELAYED_ITEMS = 2,
2718 FLUSH_DELALLOC = 3,
2719 FLUSH_DELALLOC_WAIT = 4,
2720 ALLOC_CHUNK = 5,
2721 COMMIT_TRANS = 6,
2722};
2723
04f4f916 2724int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes);
364ecf36
QW
2725int btrfs_check_data_free_space(struct inode *inode,
2726 struct extent_changeset **reserved, u64 start, u64 len);
bc42bda2
QW
2727void btrfs_free_reserved_data_space(struct inode *inode,
2728 struct extent_changeset *reserved, u64 start, u64 len);
2729void btrfs_delalloc_release_space(struct inode *inode,
2730 struct extent_changeset *reserved, u64 start, u64 len);
51773bec
QW
2731void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start,
2732 u64 len);
a22285a6 2733void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans,
2ff7e61e 2734 struct btrfs_fs_info *fs_info);
4fbcdf66 2735void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans);
d68fc57b 2736int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans,
8ed7a2a0 2737 struct btrfs_inode *inode);
703b391a 2738void btrfs_orphan_release_metadata(struct btrfs_inode *inode);
d5c12070
MX
2739int btrfs_subvolume_reserve_metadata(struct btrfs_root *root,
2740 struct btrfs_block_rsv *rsv,
2741 int nitems,
ee3441b4 2742 u64 *qgroup_reserved, bool use_global_rsv);
2ff7e61e 2743void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info,
7775c818 2744 struct btrfs_block_rsv *rsv);
9f3db423 2745int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes);
691fa059 2746void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes);
364ecf36
QW
2747int btrfs_delalloc_reserve_space(struct inode *inode,
2748 struct extent_changeset **reserved, u64 start, u64 len);
66d8f3dd 2749void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type);
2ff7e61e 2750struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_fs_info *fs_info,
66d8f3dd 2751 unsigned short type);
2ff7e61e 2752void btrfs_free_block_rsv(struct btrfs_fs_info *fs_info,
f0486c68 2753 struct btrfs_block_rsv *rsv);
cdfb080e 2754void __btrfs_free_block_rsv(struct btrfs_block_rsv *rsv);
4a92b1b8 2755int btrfs_block_rsv_add(struct btrfs_root *root,
08e007d2
MX
2756 struct btrfs_block_rsv *block_rsv, u64 num_bytes,
2757 enum btrfs_reserve_flush_enum flush);
2ff7e61e 2758int btrfs_block_rsv_check(struct btrfs_block_rsv *block_rsv, int min_factor);
36ba022a 2759int btrfs_block_rsv_refill(struct btrfs_root *root,
08e007d2
MX
2760 struct btrfs_block_rsv *block_rsv, u64 min_reserved,
2761 enum btrfs_reserve_flush_enum flush);
f0486c68 2762int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
25d609f8
JB
2763 struct btrfs_block_rsv *dst_rsv, u64 num_bytes,
2764 int update_size);
d52be818
JB
2765int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info,
2766 struct btrfs_block_rsv *dest, u64 num_bytes,
2767 int min_factor);
2ff7e61e 2768void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,
f0486c68
YZ
2769 struct btrfs_block_rsv *block_rsv,
2770 u64 num_bytes);
5e00f193 2771int btrfs_inc_block_group_ro(struct btrfs_fs_info *fs_info,
f0486c68 2772 struct btrfs_block_group_cache *cache);
2ff7e61e 2773void btrfs_dec_block_group_ro(struct btrfs_block_group_cache *cache);
0af3d00b 2774void btrfs_put_block_group_cache(struct btrfs_fs_info *info);
6d07bcec 2775u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo);
2ff7e61e 2776int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info,
acce952b 2777 u64 start, u64 end);
2ff7e61e 2778int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr,
1edb647b 2779 u64 num_bytes, u64 *actual_bytes);
c87f08ca 2780int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans,
2ff7e61e
JM
2781 struct btrfs_fs_info *fs_info, u64 type);
2782int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range);
acce952b 2783
c59021f8 2784int btrfs_init_space_info(struct btrfs_fs_info *fs_info);
bed92eae
AJ
2785int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans,
2786 struct btrfs_fs_info *fs_info);
31e50229 2787int __get_raid_index(u64 flags);
ea14b57f
DS
2788int btrfs_start_write_no_snapshotting(struct btrfs_root *root);
2789void btrfs_end_write_no_snapshotting(struct btrfs_root *root);
0bc19f90 2790void btrfs_wait_for_snapshot_creation(struct btrfs_root *root);
39c2d7fa 2791void check_system_chunk(struct btrfs_trans_handle *trans,
2ff7e61e 2792 struct btrfs_fs_info *fs_info, const u64 type);
a5ed9182
OS
2793u64 add_new_free_space(struct btrfs_block_group_cache *block_group,
2794 struct btrfs_fs_info *info, u64 start, u64 end);
2795
dee26a9f 2796/* ctree.c */
310712b2 2797int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key,
5d4f98a2 2798 int level, int *slot);
310712b2 2799int btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2);
0b86a832
CM
2800int btrfs_previous_item(struct btrfs_root *root,
2801 struct btrfs_path *path, u64 min_objectid,
2802 int type);
ade2e0b3
WS
2803int btrfs_previous_extent_item(struct btrfs_root *root,
2804 struct btrfs_path *path, u64 min_objectid);
b7a0365e
DD
2805void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info,
2806 struct btrfs_path *path,
310712b2 2807 const struct btrfs_key *new_key);
925baedd
CM
2808struct extent_buffer *btrfs_root_node(struct btrfs_root *root);
2809struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root);
84f7d8e6 2810struct extent_buffer *btrfs_read_lock_root_node(struct btrfs_root *root);
e7a84565 2811int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path,
3f157a2f 2812 struct btrfs_key *key, int lowest_level,
de78b51a 2813 u64 min_trans);
3f157a2f 2814int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key,
de78b51a 2815 struct btrfs_path *path,
3f157a2f 2816 u64 min_trans);
7069830a
AB
2817enum btrfs_compare_tree_result {
2818 BTRFS_COMPARE_TREE_NEW,
2819 BTRFS_COMPARE_TREE_DELETED,
2820 BTRFS_COMPARE_TREE_CHANGED,
ba5e8f2e 2821 BTRFS_COMPARE_TREE_SAME,
7069830a 2822};
ee8c494f 2823typedef int (*btrfs_changed_cb_t)(struct btrfs_path *left_path,
7069830a
AB
2824 struct btrfs_path *right_path,
2825 struct btrfs_key *key,
2826 enum btrfs_compare_tree_result result,
2827 void *ctx);
2828int btrfs_compare_trees(struct btrfs_root *left_root,
2829 struct btrfs_root *right_root,
2830 btrfs_changed_cb_t cb, void *ctx);
5f39d397
CM
2831int btrfs_cow_block(struct btrfs_trans_handle *trans,
2832 struct btrfs_root *root, struct extent_buffer *buf,
2833 struct extent_buffer *parent, int parent_slot,
9fa8cfe7 2834 struct extent_buffer **cow_ret);
be20aa9d
CM
2835int btrfs_copy_root(struct btrfs_trans_handle *trans,
2836 struct btrfs_root *root,
2837 struct extent_buffer *buf,
2838 struct extent_buffer **cow_ret, u64 new_root_objectid);
5d4f98a2
YZ
2839int btrfs_block_can_be_shared(struct btrfs_root *root,
2840 struct extent_buffer *buf);
2ff7e61e 2841void btrfs_extend_item(struct btrfs_fs_info *fs_info, struct btrfs_path *path,
143bede5 2842 u32 data_size);
2ff7e61e
JM
2843void btrfs_truncate_item(struct btrfs_fs_info *fs_info,
2844 struct btrfs_path *path, u32 new_size, int from_end);
459931ec
CM
2845int btrfs_split_item(struct btrfs_trans_handle *trans,
2846 struct btrfs_root *root,
2847 struct btrfs_path *path,
310712b2 2848 const struct btrfs_key *new_key,
459931ec 2849 unsigned long split_offset);
ad48fd75
YZ
2850int btrfs_duplicate_item(struct btrfs_trans_handle *trans,
2851 struct btrfs_root *root,
2852 struct btrfs_path *path,
310712b2 2853 const struct btrfs_key *new_key);
e33d5c3d
KN
2854int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path,
2855 u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key);
310712b2
OS
2856int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2857 const struct btrfs_key *key, struct btrfs_path *p,
2858 int ins_len, int cow);
2859int btrfs_search_old_slot(struct btrfs_root *root, const struct btrfs_key *key,
5d9e75c4 2860 struct btrfs_path *p, u64 time_seq);
2f38b3e1 2861int btrfs_search_slot_for_read(struct btrfs_root *root,
310712b2
OS
2862 const struct btrfs_key *key,
2863 struct btrfs_path *p, int find_higher,
2864 int return_any);
6702ed49 2865int btrfs_realloc_node(struct btrfs_trans_handle *trans,
5f39d397 2866 struct btrfs_root *root, struct extent_buffer *parent,
de78b51a 2867 int start_slot, u64 *last_ret,
a6b6e75e 2868 struct btrfs_key *progress);
b3b4aa74 2869void btrfs_release_path(struct btrfs_path *p);
2c90e5d6
CM
2870struct btrfs_path *btrfs_alloc_path(void);
2871void btrfs_free_path(struct btrfs_path *p);
b4ce94de 2872void btrfs_set_path_blocking(struct btrfs_path *p);
16cdcec7 2873void btrfs_clear_path_blocking(struct btrfs_path *p,
bd681513 2874 struct extent_buffer *held, int held_rw);
b4ce94de
CM
2875void btrfs_unlock_up_safe(struct btrfs_path *p, int level);
2876
85e21bac
CM
2877int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2878 struct btrfs_path *path, int slot, int nr);
85e21bac
CM
2879static inline int btrfs_del_item(struct btrfs_trans_handle *trans,
2880 struct btrfs_root *root,
2881 struct btrfs_path *path)
2882{
2883 return btrfs_del_items(trans, root, path, path->slots[0], 1);
2884}
2885
afe5fea7 2886void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path,
310712b2 2887 const struct btrfs_key *cpu_key, u32 *data_size,
143bede5 2888 u32 total_data, u32 total_size, int nr);
310712b2
OS
2889int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2890 const struct btrfs_key *key, void *data, u32 data_size);
9c58309d
CM
2891int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
2892 struct btrfs_root *root,
2893 struct btrfs_path *path,
310712b2
OS
2894 const struct btrfs_key *cpu_key, u32 *data_size,
2895 int nr);
9c58309d
CM
2896
2897static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans,
2898 struct btrfs_root *root,
2899 struct btrfs_path *path,
310712b2 2900 const struct btrfs_key *key,
9c58309d
CM
2901 u32 data_size)
2902{
2903 return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1);
2904}
2905
234b63a0 2906int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path);
16e7549f 2907int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path);
3d7806ec
JS
2908int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path,
2909 u64 time_seq);
1c8f52a5
AB
2910static inline int btrfs_next_old_item(struct btrfs_root *root,
2911 struct btrfs_path *p, u64 time_seq)
c7d22a3c
JS
2912{
2913 ++p->slots[0];
2914 if (p->slots[0] >= btrfs_header_nritems(p->nodes[0]))
1c8f52a5 2915 return btrfs_next_old_leaf(root, p, time_seq);
c7d22a3c
JS
2916 return 0;
2917}
1c8f52a5
AB
2918static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p)
2919{
2920 return btrfs_next_old_item(root, p, 0);
2921}
2ff7e61e
JM
2922int btrfs_leaf_free_space(struct btrfs_fs_info *fs_info,
2923 struct extent_buffer *leaf);
2c536799
JM
2924int __must_check btrfs_drop_snapshot(struct btrfs_root *root,
2925 struct btrfs_block_rsv *block_rsv,
2926 int update_ref, int for_reloc);
f82d02d9
YZ
2927int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
2928 struct btrfs_root *root,
2929 struct extent_buffer *node,
2930 struct extent_buffer *parent);
7841cb28
DS
2931static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info)
2932{
2933 /*
afcdd129 2934 * Do it this way so we only ever do one test_bit in the normal case.
7841cb28 2935 */
afcdd129
JB
2936 if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) {
2937 if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags))
2938 return 2;
2939 return 1;
2940 }
2941 return 0;
7841cb28 2942}
babbf170
MX
2943
2944/*
2945 * If we remount the fs to be R/O or umount the fs, the cleaner needn't do
2946 * anything except sleeping. This function is used to check the status of
2947 * the fs.
2948 */
2ff7e61e 2949static inline int btrfs_need_cleaner_sleep(struct btrfs_fs_info *fs_info)
babbf170 2950{
2ff7e61e 2951 return fs_info->sb->s_flags & MS_RDONLY || btrfs_fs_closing(fs_info);
babbf170
MX
2952}
2953
6c41761f
DS
2954static inline void free_fs_info(struct btrfs_fs_info *fs_info)
2955{
837d5b6e 2956 kfree(fs_info->balance_ctl);
6c41761f
DS
2957 kfree(fs_info->delayed_root);
2958 kfree(fs_info->extent_root);
2959 kfree(fs_info->tree_root);
2960 kfree(fs_info->chunk_root);
2961 kfree(fs_info->dev_root);
2962 kfree(fs_info->csum_root);
bcef60f2 2963 kfree(fs_info->quota_root);
d8f98039 2964 kfree(fs_info->uuid_root);
70f6d82e 2965 kfree(fs_info->free_space_root);
6c41761f
DS
2966 kfree(fs_info->super_copy);
2967 kfree(fs_info->super_for_commit);
f667aef6 2968 security_free_mnt_opts(&fs_info->security_opts);
6c41761f
DS
2969 kfree(fs_info);
2970}
7841cb28 2971
097b8a7c
JS
2972/* tree mod log functions from ctree.c */
2973u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info,
2974 struct seq_list *elem);
2975void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info,
2976 struct seq_list *elem);
5b6602e7 2977int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq);
097b8a7c 2978
dee26a9f 2979/* root-item.c */
0660b5af 2980int btrfs_add_root_ref(struct btrfs_trans_handle *trans,
6bccf3ab 2981 struct btrfs_fs_info *fs_info,
4df27c4d
YZ
2982 u64 root_id, u64 ref_id, u64 dirid, u64 sequence,
2983 const char *name, int name_len);
2984int btrfs_del_root_ref(struct btrfs_trans_handle *trans,
6bccf3ab 2985 struct btrfs_fs_info *fs_info,
4df27c4d 2986 u64 root_id, u64 ref_id, u64 dirid, u64 *sequence,
0660b5af 2987 const char *name, int name_len);
1cd5447e
JM
2988int btrfs_del_root(struct btrfs_trans_handle *trans,
2989 struct btrfs_fs_info *fs_info, const struct btrfs_key *key);
310712b2
OS
2990int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2991 const struct btrfs_key *key,
2992 struct btrfs_root_item *item);
b45a9d8b
JM
2993int __must_check btrfs_update_root(struct btrfs_trans_handle *trans,
2994 struct btrfs_root *root,
2995 struct btrfs_key *key,
2996 struct btrfs_root_item *item);
310712b2 2997int btrfs_find_root(struct btrfs_root *root, const struct btrfs_key *search_key,
cb517eab
MX
2998 struct btrfs_path *path, struct btrfs_root_item *root_item,
2999 struct btrfs_key *root_key);
6bccf3ab 3000int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info);
bf5f32ec
MF
3001void btrfs_set_root_node(struct btrfs_root_item *item,
3002 struct extent_buffer *node);
08fe4db1 3003void btrfs_check_and_init_root_item(struct btrfs_root_item *item);
8ea05e3a
AB
3004void btrfs_update_root_times(struct btrfs_trans_handle *trans,
3005 struct btrfs_root *root);
08fe4db1 3006
07b30a49
SB
3007/* uuid-tree.c */
3008int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans,
6bccf3ab 3009 struct btrfs_fs_info *fs_info, u8 *uuid, u8 type,
07b30a49
SB
3010 u64 subid);
3011int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans,
6bccf3ab 3012 struct btrfs_fs_info *fs_info, u8 *uuid, u8 type,
07b30a49 3013 u64 subid);
70f80175
SB
3014int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info,
3015 int (*check_func)(struct btrfs_fs_info *, u8 *, u8,
3016 u64));
07b30a49 3017
dee26a9f 3018/* dir-item.c */
9c52057c
CM
3019int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir,
3020 const char *name, int name_len);
d397712b
CM
3021int btrfs_insert_dir_item(struct btrfs_trans_handle *trans,
3022 struct btrfs_root *root, const char *name,
8e7611cf 3023 int name_len, struct btrfs_inode *dir,
aec7477b 3024 struct btrfs_key *location, u8 type, u64 index);
7e38180e
CM
3025struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
3026 struct btrfs_root *root,
3027 struct btrfs_path *path, u64 dir,
3028 const char *name, int name_len,
3029 int mod);
3030struct btrfs_dir_item *
3031btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans,
3032 struct btrfs_root *root,
3033 struct btrfs_path *path, u64 dir,
3034 u64 objectid, const char *name, int name_len,
3035 int mod);
4df27c4d
YZ
3036struct btrfs_dir_item *
3037btrfs_search_dir_index_item(struct btrfs_root *root,
3038 struct btrfs_path *path, u64 dirid,
3039 const char *name, int name_len);
7e38180e
CM
3040int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
3041 struct btrfs_root *root,
3042 struct btrfs_path *path,
3043 struct btrfs_dir_item *di);
5103e947 3044int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
f34f57a3
YZ
3045 struct btrfs_root *root,
3046 struct btrfs_path *path, u64 objectid,
3047 const char *name, u16 name_len,
3048 const void *data, u16 data_len);
5103e947
JB
3049struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
3050 struct btrfs_root *root,
3051 struct btrfs_path *path, u64 dir,
3052 const char *name, u16 name_len,
3053 int mod);
2ff7e61e 3054int verify_dir_item(struct btrfs_fs_info *fs_info,
e79a3327 3055 struct extent_buffer *leaf, int slot,
22a94d44 3056 struct btrfs_dir_item *dir_item);
2ff7e61e 3057struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info,
5f5bc6b1
FM
3058 struct btrfs_path *path,
3059 const char *name,
3060 int name_len);
19c6dcbf
SY
3061bool btrfs_is_name_len_valid(struct extent_buffer *leaf, int slot,
3062 unsigned long start, u16 name_len);
7b128766
JB
3063
3064/* orphan.c */
3065int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
3066 struct btrfs_root *root, u64 offset);
3067int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
3068 struct btrfs_root *root, u64 offset);
4df27c4d 3069int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset);
7b128766 3070
dee26a9f 3071/* inode-item.c */
3954401f
CM
3072int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
3073 struct btrfs_root *root,
3074 const char *name, int name_len,
aec7477b 3075 u64 inode_objectid, u64 ref_objectid, u64 index);
3954401f
CM
3076int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
3077 struct btrfs_root *root,
3078 const char *name, int name_len,
aec7477b 3079 u64 inode_objectid, u64 ref_objectid, u64 *index);
5f39d397
CM
3080int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
3081 struct btrfs_root *root,
3082 struct btrfs_path *path, u64 objectid);
293ffd5f 3083int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
d6e4a428
CM
3084 *root, struct btrfs_path *path,
3085 struct btrfs_key *location, int mod);
dee26a9f 3086
f186373f
MF
3087struct btrfs_inode_extref *
3088btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans,
3089 struct btrfs_root *root,
3090 struct btrfs_path *path,
3091 const char *name, int name_len,
3092 u64 inode_objectid, u64 ref_objectid, int ins_len,
3093 int cow);
3094
3095int btrfs_find_name_in_ext_backref(struct btrfs_path *path,
3096 u64 ref_objectid, const char *name,
3097 int name_len,
3098 struct btrfs_inode_extref **extref_ret);
3099
dee26a9f 3100/* file-item.c */
facc8a22 3101struct btrfs_dio_private;
459931ec 3102int btrfs_del_csums(struct btrfs_trans_handle *trans,
5b4aacef 3103 struct btrfs_fs_info *fs_info, u64 bytenr, u64 len);
4e4cbee9
CH
3104blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u32 *dst);
3105blk_status_t btrfs_lookup_bio_sums_dio(struct inode *inode, struct bio *bio,
2ff7e61e 3106 u64 logical_offset);
b18c6685 3107int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
c8b97818
CM
3108 struct btrfs_root *root,
3109 u64 objectid, u64 pos,
3110 u64 disk_offset, u64 disk_num_bytes,
3111 u64 num_bytes, u64 offset, u64 ram_bytes,
3112 u8 compression, u8 encryption, u16 other_encoding);
dee26a9f
CM
3113int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
3114 struct btrfs_root *root,
3115 struct btrfs_path *path, u64 objectid,
db94535d 3116 u64 bytenr, int mod);
065631f6 3117int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
d20f7043 3118 struct btrfs_root *root,
e6dcd2dc 3119 struct btrfs_ordered_sum *sums);
4e4cbee9 3120blk_status_t btrfs_csum_one_bio(struct inode *inode, struct bio *bio,
2ff7e61e 3121 u64 file_start, int contig);
a2de733c
AJ
3122int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
3123 struct list_head *list, int search_commit);
9cdc5124 3124void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode,
7ffbb598
FM
3125 const struct btrfs_path *path,
3126 struct btrfs_file_extent_item *fi,
3127 const bool new_inline,
3128 struct extent_map *em);
3129
39279cc3 3130/* inode.c */
8ccf6f19
MX
3131struct btrfs_delalloc_work {
3132 struct inode *inode;
8ccf6f19
MX
3133 int delay_iput;
3134 struct completion completion;
3135 struct list_head list;
3136 struct btrfs_work work;
3137};
3138
3139struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode,
651d494a 3140 int delay_iput);
8ccf6f19
MX
3141void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work);
3142
fc4f21b1
NB
3143struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode,
3144 struct page *page, size_t pg_offset, u64 start,
3145 u64 len, int create);
00361589 3146noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
7ee9e440
JB
3147 u64 *orig_start, u64 *orig_block_len,
3148 u64 *ram_bytes);
4881ee5a 3149
3de4586c 3150struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry);
70ddc553 3151int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index);
e02119d5
CM
3152int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
3153 struct btrfs_root *root,
4ec5934e 3154 struct btrfs_inode *dir, struct btrfs_inode *inode,
e02119d5
CM
3155 const char *name, int name_len);
3156int btrfs_add_link(struct btrfs_trans_handle *trans,
db0a669f 3157 struct btrfs_inode *parent_inode, struct btrfs_inode *inode,
e02119d5 3158 const char *name, int name_len, int add_backref, u64 index);
4df27c4d
YZ
3159int btrfs_unlink_subvol(struct btrfs_trans_handle *trans,
3160 struct btrfs_root *root,
3161 struct inode *dir, u64 objectid,
3162 const char *name, int name_len);
9703fefe 3163int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len,
2aaa6655 3164 int front);
e02119d5
CM
3165int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
3166 struct btrfs_root *root,
3167 struct inode *inode, u64 new_size,
3168 u32 min_type);
3169
24bbcf04 3170int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput);
6c255e67
MX
3171int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput,
3172 int nr);
2ac55d41 3173int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end,
ba8b04c1 3174 struct extent_state **cached_state, int dedupe);
d2fb3437 3175int btrfs_create_subvol_root(struct btrfs_trans_handle *trans,
63541927
FDBM
3176 struct btrfs_root *new_root,
3177 struct btrfs_root *parent_root,
3178 u64 new_dirid);
81a75f67 3179int btrfs_merge_bio_hook(struct page *page, unsigned long offset,
64a16701
DW
3180 size_t size, struct bio *bio,
3181 unsigned long bio_flags);
c6100a4b 3182void btrfs_set_range_writeback(void *private_data, u64 start, u64 end);
11bac800 3183int btrfs_page_mkwrite(struct vm_fault *vmf);
9ebefb18 3184int btrfs_readpage(struct file *file, struct page *page);
bd555975 3185void btrfs_evict_inode(struct inode *inode);
a9185b41 3186int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc);
39279cc3
CM
3187struct inode *btrfs_alloc_inode(struct super_block *sb);
3188void btrfs_destroy_inode(struct inode *inode);
45321ac5 3189int btrfs_drop_inode(struct inode *inode);
39279cc3
CM
3190int btrfs_init_cachep(void);
3191void btrfs_destroy_cachep(void);
6bf13c0c 3192long btrfs_ioctl_trans_end(struct file *file);
1a54ef8c 3193struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
73f73415 3194 struct btrfs_root *root, int *was_new);
fc4f21b1
NB
3195struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
3196 struct page *page, size_t pg_offset,
3197 u64 start, u64 end, int create);
a52d9a80
CM
3198int btrfs_update_inode(struct btrfs_trans_handle *trans,
3199 struct btrfs_root *root,
3200 struct inode *inode);
be6aef60
JB
3201int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans,
3202 struct btrfs_root *root, struct inode *inode);
73f2e545
NB
3203int btrfs_orphan_add(struct btrfs_trans_handle *trans,
3204 struct btrfs_inode *inode);
66b4ffd1 3205int btrfs_orphan_cleanup(struct btrfs_root *root);
d68fc57b
YZ
3206void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans,
3207 struct btrfs_root *root);
a41ad394 3208int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size);
143bede5 3209void btrfs_invalidate_inodes(struct btrfs_root *root);
24bbcf04 3210void btrfs_add_delayed_iput(struct inode *inode);
2ff7e61e 3211void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info);
efa56464
YZ
3212int btrfs_prealloc_file_range(struct inode *inode, int mode,
3213 u64 start, u64 num_bytes, u64 min_size,
3214 loff_t actual_len, u64 *alloc_hint);
0af3d00b
JB
3215int btrfs_prealloc_file_range_trans(struct inode *inode,
3216 struct btrfs_trans_handle *trans, int mode,
3217 u64 start, u64 num_bytes, u64 min_size,
3218 loff_t actual_len, u64 *alloc_hint);
82d339d9 3219extern const struct dentry_operations btrfs_dentry_operations;
6a3891c5
JB
3220#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
3221void btrfs_test_inode_set_ops(struct inode *inode);
3222#endif
f46b5a66
CH
3223
3224/* ioctl.c */
3225long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
4c63c245 3226long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
d5131b65 3227int btrfs_ioctl_get_supported_features(void __user *arg);
6cbff00f 3228void btrfs_update_iflags(struct inode *inode);
dd5f9615 3229int btrfs_is_empty_uuid(u8 *uuid);
4cb5300b
CM
3230int btrfs_defrag_file(struct inode *inode, struct file *file,
3231 struct btrfs_ioctl_defrag_range_args *range,
3232 u64 newer_than, unsigned long max_pages);
5af3e8cc
SB
3233void btrfs_get_block_group_info(struct list_head *groups_list,
3234 struct btrfs_ioctl_space_info *space);
35a3621b
SB
3235void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock,
3236 struct btrfs_ioctl_balance_args *bargs);
2b3909f8
DW
3237ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen,
3238 struct file *dst_file, u64 dst_loff);
35a3621b 3239
39279cc3 3240/* file.c */
9247f317
MX
3241int btrfs_auto_defrag_init(void);
3242void btrfs_auto_defrag_exit(void);
4cb5300b 3243int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans,
6158e1ce 3244 struct btrfs_inode *inode);
4cb5300b 3245int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info);
26176e7c 3246void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info);
02c24a82 3247int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
dcdbc059 3248void btrfs_drop_extent_cache(struct btrfs_inode *inode, u64 start, u64 end,
7014cdb4 3249 int skip_pinned);
828c0950 3250extern const struct file_operations btrfs_file_operations;
5dc562c5
JB
3251int __btrfs_drop_extents(struct btrfs_trans_handle *trans,
3252 struct btrfs_root *root, struct inode *inode,
3253 struct btrfs_path *path, u64 start, u64 end,
1acae57b
FDBM
3254 u64 *drop_end, int drop_cache,
3255 int replace_extent,
3256 u32 extent_item_size,
3257 int *key_inserted);
5dc562c5
JB
3258int btrfs_drop_extents(struct btrfs_trans_handle *trans,
3259 struct btrfs_root *root, struct inode *inode, u64 start,
2671485d 3260 u64 end, int drop_cache);
d899e052 3261int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
7a6d7067 3262 struct btrfs_inode *inode, u64 start, u64 end);
6bf13c0c 3263int btrfs_release_file(struct inode *inode, struct file *file);
2ff7e61e
JM
3264int btrfs_dirty_pages(struct inode *inode, struct page **pages,
3265 size_t num_pages, loff_t pos, size_t write_bytes,
be1a12a0 3266 struct extent_state **cached);
728404da 3267int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end);
04b38d60
CH
3268int btrfs_clone_file_range(struct file *file_in, loff_t pos_in,
3269 struct file *file_out, loff_t pos_out, u64 len);
6bf13c0c 3270
6702ed49
CM
3271/* tree-defrag.c */
3272int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
de78b51a 3273 struct btrfs_root *root);
58176a96
JB
3274
3275/* sysfs.c */
3276int btrfs_init_sysfs(void);
3277void btrfs_exit_sysfs(void);
96f3136e 3278int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info);
6618a59b 3279void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info);
58176a96 3280
5103e947
JB
3281/* xattr.c */
3282ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
6099afe8 3283
edbd8d4e 3284/* super.c */
2ff7e61e 3285int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
96da0919 3286 unsigned long new_flags);
6bf13c0c 3287int btrfs_sync_fs(struct super_block *sb, int wait);
533574c6 3288
2fd57fcb
AB
3289static inline __printf(2, 3)
3290void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...)
3291{
3292}
3293
533574c6
JP
3294#ifdef CONFIG_PRINTK
3295__printf(2, 3)
c2cf52eb 3296void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...);
533574c6 3297#else
2fd57fcb
AB
3298#define btrfs_printk(fs_info, fmt, args...) \
3299 btrfs_no_printk(fs_info, fmt, ##args)
533574c6
JP
3300#endif
3301
c2cf52eb
SK
3302#define btrfs_emerg(fs_info, fmt, args...) \
3303 btrfs_printk(fs_info, KERN_EMERG fmt, ##args)
3304#define btrfs_alert(fs_info, fmt, args...) \
3305 btrfs_printk(fs_info, KERN_ALERT fmt, ##args)
3306#define btrfs_crit(fs_info, fmt, args...) \
3307 btrfs_printk(fs_info, KERN_CRIT fmt, ##args)
3308#define btrfs_err(fs_info, fmt, args...) \
3309 btrfs_printk(fs_info, KERN_ERR fmt, ##args)
3310#define btrfs_warn(fs_info, fmt, args...) \
3311 btrfs_printk(fs_info, KERN_WARNING fmt, ##args)
3312#define btrfs_notice(fs_info, fmt, args...) \
3313 btrfs_printk(fs_info, KERN_NOTICE fmt, ##args)
3314#define btrfs_info(fs_info, fmt, args...) \
3315 btrfs_printk(fs_info, KERN_INFO fmt, ##args)
27a0dd61 3316
08a84e25
DS
3317/*
3318 * Wrappers that use printk_in_rcu
3319 */
3320#define btrfs_emerg_in_rcu(fs_info, fmt, args...) \
3321 btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args)
3322#define btrfs_alert_in_rcu(fs_info, fmt, args...) \
3323 btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args)
3324#define btrfs_crit_in_rcu(fs_info, fmt, args...) \
3325 btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args)
3326#define btrfs_err_in_rcu(fs_info, fmt, args...) \
3327 btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args)
3328#define btrfs_warn_in_rcu(fs_info, fmt, args...) \
3329 btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args)
3330#define btrfs_notice_in_rcu(fs_info, fmt, args...) \
3331 btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args)
3332#define btrfs_info_in_rcu(fs_info, fmt, args...) \
3333 btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args)
3334
24aa6b41
DS
3335/*
3336 * Wrappers that use a ratelimited printk_in_rcu
3337 */
3338#define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \
3339 btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args)
3340#define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \
3341 btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args)
3342#define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \
3343 btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args)
3344#define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \
3345 btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args)
3346#define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \
3347 btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args)
3348#define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \
3349 btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args)
3350#define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \
3351 btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args)
3352
1dd6d7ca
DS
3353/*
3354 * Wrappers that use a ratelimited printk
3355 */
3356#define btrfs_emerg_rl(fs_info, fmt, args...) \
3357 btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args)
3358#define btrfs_alert_rl(fs_info, fmt, args...) \
3359 btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args)
3360#define btrfs_crit_rl(fs_info, fmt, args...) \
3361 btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args)
3362#define btrfs_err_rl(fs_info, fmt, args...) \
3363 btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args)
3364#define btrfs_warn_rl(fs_info, fmt, args...) \
3365 btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args)
3366#define btrfs_notice_rl(fs_info, fmt, args...) \
3367 btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args)
3368#define btrfs_info_rl(fs_info, fmt, args...) \
3369 btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args)
897a41b1
JM
3370
3371#if defined(CONFIG_DYNAMIC_DEBUG)
3372#define btrfs_debug(fs_info, fmt, args...) \
3373do { \
3374 DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
3375 if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \
3376 btrfs_printk(fs_info, KERN_DEBUG fmt, ##args); \
3377} while (0)
3378#define btrfs_debug_in_rcu(fs_info, fmt, args...) \
3379do { \
3380 DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
3381 if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \
3382 btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args); \
3383} while (0)
3384#define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \
3385do { \
3386 DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
3387 if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \
3388 btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, \
3389 ##args);\
3390} while (0)
3391#define btrfs_debug_rl(fs_info, fmt, args...) \
3392do { \
3393 DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
3394 if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \
3395 btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, \
3396 ##args); \
3397} while (0)
3398#elif defined(DEBUG)
c2cf52eb
SK
3399#define btrfs_debug(fs_info, fmt, args...) \
3400 btrfs_printk(fs_info, KERN_DEBUG fmt, ##args)
08a84e25
DS
3401#define btrfs_debug_in_rcu(fs_info, fmt, args...) \
3402 btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
24aa6b41
DS
3403#define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \
3404 btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
1dd6d7ca
DS
3405#define btrfs_debug_rl(fs_info, fmt, args...) \
3406 btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args)
27a0dd61
FH
3407#else
3408#define btrfs_debug(fs_info, fmt, args...) \
c01f5f96 3409 btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args)
08a84e25 3410#define btrfs_debug_in_rcu(fs_info, fmt, args...) \
c01f5f96 3411 btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args)
24aa6b41 3412#define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \
c01f5f96 3413 btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args)
1dd6d7ca 3414#define btrfs_debug_rl(fs_info, fmt, args...) \
c01f5f96 3415 btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args)
27a0dd61 3416#endif
c2cf52eb 3417
08a84e25
DS
3418#define btrfs_printk_in_rcu(fs_info, fmt, args...) \
3419do { \
3420 rcu_read_lock(); \
3421 btrfs_printk(fs_info, fmt, ##args); \
3422 rcu_read_unlock(); \
3423} while (0)
3424
24aa6b41
DS
3425#define btrfs_printk_ratelimited(fs_info, fmt, args...) \
3426do { \
3427 static DEFINE_RATELIMIT_STATE(_rs, \
3428 DEFAULT_RATELIMIT_INTERVAL, \
3429 DEFAULT_RATELIMIT_BURST); \
3430 if (__ratelimit(&_rs)) \
3431 btrfs_printk(fs_info, fmt, ##args); \
3432} while (0)
3433
3434#define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \
3435do { \
3436 rcu_read_lock(); \
3437 btrfs_printk_ratelimited(fs_info, fmt, ##args); \
3438 rcu_read_unlock(); \
3439} while (0)
3440
2e17c7c6
JB
3441#ifdef CONFIG_BTRFS_ASSERT
3442
c0d19e2b 3443__cold
2e17c7c6
JB
3444static inline void assfail(char *expr, char *file, int line)
3445{
ab8d0fc4 3446 pr_err("assertion failed: %s, file: %s, line: %d\n",
2e17c7c6
JB
3447 expr, file, line);
3448 BUG();
3449}
3450
3451#define ASSERT(expr) \
3452 (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
3453#else
3454#define ASSERT(expr) ((void)0)
3455#endif
3456
533574c6 3457__printf(5, 6)
c0d19e2b 3458__cold
34d97007 3459void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function,
4da35113 3460 unsigned int line, int errno, const char *fmt, ...);
acce952b 3461
e33e17ee 3462const char *btrfs_decode_error(int errno);
533574c6 3463
c0d19e2b 3464__cold
49b25e05 3465void __btrfs_abort_transaction(struct btrfs_trans_handle *trans,
66642832 3466 const char *function,
49b25e05
JM
3467 unsigned int line, int errno);
3468
c5f4ccb2
AJ
3469/*
3470 * Call btrfs_abort_transaction as early as possible when an error condition is
3471 * detected, that way the exact line number is reported.
3472 */
66642832 3473#define btrfs_abort_transaction(trans, errno) \
c5f4ccb2
AJ
3474do { \
3475 /* Report first abort since mount */ \
3476 if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \
66642832 3477 &((trans)->fs_info->fs_state))) { \
e5d6b12f
CM
3478 if ((errno) != -EIO) { \
3479 WARN(1, KERN_DEBUG \
3480 "BTRFS: Transaction aborted (error %d)\n", \
3481 (errno)); \
3482 } else { \
71367b3f
JM
3483 btrfs_debug((trans)->fs_info, \
3484 "Transaction aborted (error %d)", \
e5d6b12f
CM
3485 (errno)); \
3486 } \
c5f4ccb2 3487 } \
66642832 3488 __btrfs_abort_transaction((trans), __func__, \
c5f4ccb2
AJ
3489 __LINE__, (errno)); \
3490} while (0)
3491
3492#define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \
3493do { \
3494 __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \
3495 (errno), fmt, ##args); \
3496} while (0)
3497
3498__printf(5, 6)
3499__cold
3500void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function,
3501 unsigned int line, int errno, const char *fmt, ...);
3502/*
3503 * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic
3504 * will panic(). Otherwise we BUG() here.
3505 */
3506#define btrfs_panic(fs_info, errno, fmt, args...) \
3507do { \
3508 __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \
3509 BUG(); \
3510} while (0)
3511
3512
3513/* compatibility and incompatibility defines */
3514
2b0ce2c2
MH
3515#define btrfs_set_fs_incompat(__fs_info, opt) \
3516 __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt)
3517
3518static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info,
3519 u64 flag)
3520{
3521 struct btrfs_super_block *disk_super;
3522 u64 features;
3523
3524 disk_super = fs_info->super_copy;
3525 features = btrfs_super_incompat_flags(disk_super);
3526 if (!(features & flag)) {
ceda0864
MX
3527 spin_lock(&fs_info->super_lock);
3528 features = btrfs_super_incompat_flags(disk_super);
3529 if (!(features & flag)) {
3530 features |= flag;
3531 btrfs_set_super_incompat_flags(disk_super, features);
efe120a0 3532 btrfs_info(fs_info, "setting %llu feature flag",
ceda0864
MX
3533 flag);
3534 }
3535 spin_unlock(&fs_info->super_lock);
2b0ce2c2
MH
3536 }
3537}
3538
1abfbcdf
OS
3539#define btrfs_clear_fs_incompat(__fs_info, opt) \
3540 __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt)
3541
3542static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info,
3543 u64 flag)
3544{
3545 struct btrfs_super_block *disk_super;
3546 u64 features;
3547
3548 disk_super = fs_info->super_copy;
3549 features = btrfs_super_incompat_flags(disk_super);
3550 if (features & flag) {
3551 spin_lock(&fs_info->super_lock);
3552 features = btrfs_super_incompat_flags(disk_super);
3553 if (features & flag) {
3554 features &= ~flag;
3555 btrfs_set_super_incompat_flags(disk_super, features);
3556 btrfs_info(fs_info, "clearing %llu feature flag",
3557 flag);
3558 }
3559 spin_unlock(&fs_info->super_lock);
3560 }
3561}
3562
3173a18f
JB
3563#define btrfs_fs_incompat(fs_info, opt) \
3564 __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt)
3565
9780c497 3566static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag)
3173a18f
JB
3567{
3568 struct btrfs_super_block *disk_super;
3569 disk_super = fs_info->super_copy;
3570 return !!(btrfs_super_incompat_flags(disk_super) & flag);
3571}
3572
1abfbcdf
OS
3573#define btrfs_set_fs_compat_ro(__fs_info, opt) \
3574 __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt)
3575
3576static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info,
3577 u64 flag)
3578{
3579 struct btrfs_super_block *disk_super;
3580 u64 features;
3581
3582 disk_super = fs_info->super_copy;
3583 features = btrfs_super_compat_ro_flags(disk_super);
3584 if (!(features & flag)) {
3585 spin_lock(&fs_info->super_lock);
3586 features = btrfs_super_compat_ro_flags(disk_super);
3587 if (!(features & flag)) {
3588 features |= flag;
3589 btrfs_set_super_compat_ro_flags(disk_super, features);
3590 btrfs_info(fs_info, "setting %llu ro feature flag",
3591 flag);
3592 }
3593 spin_unlock(&fs_info->super_lock);
3594 }
3595}
3596
3597#define btrfs_clear_fs_compat_ro(__fs_info, opt) \
3598 __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt)
3599
3600static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info,
3601 u64 flag)
3602{
3603 struct btrfs_super_block *disk_super;
3604 u64 features;
3605
3606 disk_super = fs_info->super_copy;
3607 features = btrfs_super_compat_ro_flags(disk_super);
3608 if (features & flag) {
3609 spin_lock(&fs_info->super_lock);
3610 features = btrfs_super_compat_ro_flags(disk_super);
3611 if (features & flag) {
3612 features &= ~flag;
3613 btrfs_set_super_compat_ro_flags(disk_super, features);
3614 btrfs_info(fs_info, "clearing %llu ro feature flag",
3615 flag);
3616 }
3617 spin_unlock(&fs_info->super_lock);
3618 }
3619}
3620
3621#define btrfs_fs_compat_ro(fs_info, opt) \
3622 __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt)
3623
3624static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag)
3625{
3626 struct btrfs_super_block *disk_super;
3627 disk_super = fs_info->super_copy;
3628 return !!(btrfs_super_compat_ro_flags(disk_super) & flag);
3629}
3630
33268eaf 3631/* acl.c */
0eda294d 3632#ifdef CONFIG_BTRFS_FS_POSIX_ACL
4e34e719 3633struct posix_acl *btrfs_get_acl(struct inode *inode, int type);
996a710d 3634int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type);
f34f57a3
YZ
3635int btrfs_init_acl(struct btrfs_trans_handle *trans,
3636 struct inode *inode, struct inode *dir);
9b89d95a 3637#else
ed8f3737 3638#define btrfs_get_acl NULL
996a710d 3639#define btrfs_set_acl NULL
9b89d95a
LZ
3640static inline int btrfs_init_acl(struct btrfs_trans_handle *trans,
3641 struct inode *inode, struct inode *dir)
3642{
3643 return 0;
3644}
9b89d95a 3645#endif
0f9dd46c 3646
5d4f98a2 3647/* relocation.c */
6bccf3ab 3648int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start);
5d4f98a2
YZ
3649int btrfs_init_reloc_root(struct btrfs_trans_handle *trans,
3650 struct btrfs_root *root);
3651int btrfs_update_reloc_root(struct btrfs_trans_handle *trans,
3652 struct btrfs_root *root);
3653int btrfs_recover_relocation(struct btrfs_root *root);
3654int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len);
83d4cfd4
JB
3655int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans,
3656 struct btrfs_root *root, struct extent_buffer *buf,
3657 struct extent_buffer *cow);
147d256e 3658void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending,
3fd0a558 3659 u64 *bytes_to_reserve);
49b25e05 3660int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
3fd0a558 3661 struct btrfs_pending_snapshot *pending);
a2de733c
AJ
3662
3663/* scrub.c */
aa1b8cd4
SB
3664int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start,
3665 u64 end, struct btrfs_scrub_progress *progress,
63a212ab 3666 int readonly, int is_dev_replace);
2ff7e61e
JM
3667void btrfs_scrub_pause(struct btrfs_fs_info *fs_info);
3668void btrfs_scrub_continue(struct btrfs_fs_info *fs_info);
aa1b8cd4
SB
3669int btrfs_scrub_cancel(struct btrfs_fs_info *info);
3670int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info,
3671 struct btrfs_device *dev);
2ff7e61e 3672int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid,
a2de733c 3673 struct btrfs_scrub_progress *progress);
0966a7b1
QW
3674static inline void btrfs_init_full_stripe_locks_tree(
3675 struct btrfs_full_stripe_locks_tree *locks_root)
3676{
3677 locks_root->root = RB_ROOT;
3678 mutex_init(&locks_root->lock);
3679}
c404e0dc
MX
3680
3681/* dev-replace.c */
3682void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info);
3683void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info);
4245215d
MX
3684void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount);
3685
3686static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info)
3687{
3688 btrfs_bio_counter_sub(fs_info, 1);
3689}
a2de733c 3690
7414a03f
AJ
3691/* reada.c */
3692struct reada_control {
c28f158e 3693 struct btrfs_fs_info *fs_info; /* tree to prefetch */
7414a03f
AJ
3694 struct btrfs_key key_start;
3695 struct btrfs_key key_end; /* exclusive */
3696 atomic_t elems;
3697 struct kref refcnt;
3698 wait_queue_head_t wait;
3699};
3700struct reada_control *btrfs_reada_add(struct btrfs_root *root,
3701 struct btrfs_key *start, struct btrfs_key *end);
3702int btrfs_reada_wait(void *handle);
3703void btrfs_reada_detach(void *handle);
d48d71aa 3704int btree_readahead_hook(struct extent_buffer *eb, int err);
7414a03f 3705
95a06077
JS
3706static inline int is_fstree(u64 rootid)
3707{
3708 if (rootid == BTRFS_FS_TREE_OBJECTID ||
e09fe2d2
QW
3709 ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID &&
3710 !btrfs_qgroup_level(rootid)))
95a06077
JS
3711 return 1;
3712 return 0;
3713}
210549eb
DS
3714
3715static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info)
3716{
3717 return signal_pending(current);
3718}
3719
aaedb55b
JB
3720/* Sanity test specific functions */
3721#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
3722void btrfs_test_destroy_inode(struct inode *inode);
3723#endif
210549eb 3724
f5ee5c9a 3725static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info)
fccb84c9
DS
3726{
3727#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
f5ee5c9a
JM
3728 if (unlikely(test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO,
3729 &fs_info->fs_state)))
fccb84c9
DS
3730 return 1;
3731#endif
3732 return 0;
3733}
eb60ceac 3734#endif