1
2
3
4
5
6#ifndef BTRFS_CTREE_H
7#define BTRFS_CTREE_H
8
9#include <linux/mm.h>
10#include <linux/sched/signal.h>
11#include <linux/highmem.h>
12#include <linux/fs.h>
13#include <linux/rwsem.h>
14#include <linux/semaphore.h>
15#include <linux/completion.h>
16#include <linux/backing-dev.h>
17#include <linux/wait.h>
18#include <linux/slab.h>
19#include <trace/events/btrfs.h>
20#include <asm/unaligned.h>
21#include <linux/pagemap.h>
22#include <linux/btrfs.h>
23#include <linux/btrfs_tree.h>
24#include <linux/workqueue.h>
25#include <linux/security.h>
26#include <linux/sizes.h>
27#include <linux/dynamic_debug.h>
28#include <linux/refcount.h>
29#include <linux/crc32c.h>
30#include <linux/iomap.h>
31#include "extent-io-tree.h"
32#include "extent_io.h"
33#include "extent_map.h"
34#include "async-thread.h"
35#include "block-rsv.h"
36#include "locking.h"
37
38struct btrfs_trans_handle;
39struct btrfs_transaction;
40struct btrfs_pending_snapshot;
41struct btrfs_delayed_ref_root;
42struct btrfs_space_info;
43struct btrfs_block_group;
44extern struct kmem_cache *btrfs_trans_handle_cachep;
45extern struct kmem_cache *btrfs_bit_radix_cachep;
46extern struct kmem_cache *btrfs_path_cachep;
47extern struct kmem_cache *btrfs_free_space_cachep;
48extern struct kmem_cache *btrfs_free_space_bitmap_cachep;
49struct btrfs_ordered_sum;
50struct btrfs_ref;
51
52#define BTRFS_MAGIC 0x4D5F53665248425FULL
53
54
55
56
57
58
59
60
61
62
63#define BTRFS_MAX_MIRRORS (4 + 1)
64
65#define BTRFS_MAX_LEVEL 8
66
67#define BTRFS_OLDEST_GENERATION 0ULL
68
69
70
71
72
73#define BTRFS_NAME_LEN 255
74
75
76
77
78
79
80#define BTRFS_LINK_MAX 65535U
81
82#define BTRFS_EMPTY_DIR_SIZE 0
83
84
85#define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0))
86
87#define BTRFS_DIRTY_METADATA_THRESH SZ_32M
88
89
90
91
92
93
94
95#define BTRFS_TOTAL_BYTES_PINNED_BATCH SZ_128M
96
97#define BTRFS_MAX_EXTENT_SIZE SZ_128M
98
99
100
101
102
103
104#define BTRFS_STAT_NR_ENTRIES 2
105#define BTRFS_STAT_CURR 0
106#define BTRFS_STAT_PREV 1
107
108
109
110
111static inline u32 count_max_extents(u64 size)
112{
113 return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE);
114}
115
116static inline unsigned long btrfs_chunk_item_size(int num_stripes)
117{
118 BUG_ON(num_stripes == 0);
119 return sizeof(struct btrfs_chunk) +
120 sizeof(struct btrfs_stripe) * (num_stripes - 1);
121}
122
123
124
125
126enum {
127
128 BTRFS_FS_STATE_ERROR,
129
130
131
132
133 BTRFS_FS_STATE_REMOUNTING,
134
135 BTRFS_FS_STATE_RO,
136
137 BTRFS_FS_STATE_TRANS_ABORTED,
138
139
140
141
142 BTRFS_FS_STATE_DEV_REPLACING,
143
144 BTRFS_FS_STATE_DUMMY_FS_INFO,
145};
146
147#define BTRFS_BACKREF_REV_MAX 256
148#define BTRFS_BACKREF_REV_SHIFT 56
149#define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \
150 BTRFS_BACKREF_REV_SHIFT)
151
152#define BTRFS_OLD_BACKREF_REV 0
153#define BTRFS_MIXED_BACKREF_REV 1
154
155
156
157
158struct btrfs_header {
159
160 u8 csum[BTRFS_CSUM_SIZE];
161 u8 fsid[BTRFS_FSID_SIZE];
162 __le64 bytenr;
163 __le64 flags;
164
165
166 u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
167 __le64 generation;
168 __le64 owner;
169 __le32 nritems;
170 u8 level;
171} __attribute__ ((__packed__));
172
173
174
175
176
177#define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048
178
179
180
181
182
183
184#define BTRFS_NUM_BACKUP_ROOTS 4
185struct btrfs_root_backup {
186 __le64 tree_root;
187 __le64 tree_root_gen;
188
189 __le64 chunk_root;
190 __le64 chunk_root_gen;
191
192 __le64 extent_root;
193 __le64 extent_root_gen;
194
195 __le64 fs_root;
196 __le64 fs_root_gen;
197
198 __le64 dev_root;
199 __le64 dev_root_gen;
200
201 __le64 csum_root;
202 __le64 csum_root_gen;
203
204 __le64 total_bytes;
205 __le64 bytes_used;
206 __le64 num_devices;
207
208 __le64 unused_64[4];
209
210 u8 tree_root_level;
211 u8 chunk_root_level;
212 u8 extent_root_level;
213 u8 fs_root_level;
214 u8 dev_root_level;
215 u8 csum_root_level;
216
217 u8 unused_8[10];
218} __attribute__ ((__packed__));
219
220
221
222
223
224struct btrfs_super_block {
225
226 u8 csum[BTRFS_CSUM_SIZE];
227
228 u8 fsid[BTRFS_FSID_SIZE];
229 __le64 bytenr;
230 __le64 flags;
231
232
233 __le64 magic;
234 __le64 generation;
235 __le64 root;
236 __le64 chunk_root;
237 __le64 log_root;
238
239
240 __le64 log_root_transid;
241 __le64 total_bytes;
242 __le64 bytes_used;
243 __le64 root_dir_objectid;
244 __le64 num_devices;
245 __le32 sectorsize;
246 __le32 nodesize;
247 __le32 __unused_leafsize;
248 __le32 stripesize;
249 __le32 sys_chunk_array_size;
250 __le64 chunk_root_generation;
251 __le64 compat_flags;
252 __le64 compat_ro_flags;
253 __le64 incompat_flags;
254 __le16 csum_type;
255 u8 root_level;
256 u8 chunk_root_level;
257 u8 log_root_level;
258 struct btrfs_dev_item dev_item;
259
260 char label[BTRFS_LABEL_SIZE];
261
262 __le64 cache_generation;
263 __le64 uuid_tree_generation;
264
265
266 u8 metadata_uuid[BTRFS_FSID_SIZE];
267
268
269 __le64 reserved[28];
270 u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE];
271 struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS];
272} __attribute__ ((__packed__));
273
274
275
276
277
278#define BTRFS_FEATURE_COMPAT_SUPP 0ULL
279#define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL
280#define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL
281
282#define BTRFS_FEATURE_COMPAT_RO_SUPP \
283 (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE | \
284 BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID | \
285 BTRFS_FEATURE_COMPAT_RO_VERITY)
286
287#define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL
288#define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL
289
290#define BTRFS_FEATURE_INCOMPAT_SUPP \
291 (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \
292 BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \
293 BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \
294 BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \
295 BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \
296 BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD | \
297 BTRFS_FEATURE_INCOMPAT_RAID56 | \
298 BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \
299 BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \
300 BTRFS_FEATURE_INCOMPAT_NO_HOLES | \
301 BTRFS_FEATURE_INCOMPAT_METADATA_UUID | \
302 BTRFS_FEATURE_INCOMPAT_RAID1C34 | \
303 BTRFS_FEATURE_INCOMPAT_ZONED)
304
305#define BTRFS_FEATURE_INCOMPAT_SAFE_SET \
306 (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF)
307#define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL
308
309
310
311
312
313struct btrfs_item {
314 struct btrfs_disk_key key;
315 __le32 offset;
316 __le32 size;
317} __attribute__ ((__packed__));
318
319
320
321
322
323
324
325
326struct btrfs_leaf {
327 struct btrfs_header header;
328 struct btrfs_item items[];
329} __attribute__ ((__packed__));
330
331
332
333
334
335struct btrfs_key_ptr {
336 struct btrfs_disk_key key;
337 __le64 blockptr;
338 __le64 generation;
339} __attribute__ ((__packed__));
340
341struct btrfs_node {
342 struct btrfs_header header;
343 struct btrfs_key_ptr ptrs[];
344} __attribute__ ((__packed__));
345
346
347enum {
348 READA_NONE,
349 READA_BACK,
350 READA_FORWARD,
351
352
353
354
355
356
357
358
359
360
361
362
363
364 READA_FORWARD_ALWAYS,
365};
366
367
368
369
370
371
372
373
374
375struct btrfs_path {
376 struct extent_buffer *nodes[BTRFS_MAX_LEVEL];
377 int slots[BTRFS_MAX_LEVEL];
378
379 u8 locks[BTRFS_MAX_LEVEL];
380 u8 reada;
381
382 u8 lowest_level;
383
384
385
386
387
388 unsigned int search_for_split:1;
389 unsigned int keep_locks:1;
390 unsigned int skip_locking:1;
391 unsigned int search_commit_root:1;
392 unsigned int need_commit_sem:1;
393 unsigned int skip_release_on_error:1;
394
395
396
397
398
399 unsigned int search_for_extension:1;
400};
401#define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \
402 sizeof(struct btrfs_item))
403struct btrfs_dev_replace {
404 u64 replace_state;
405 time64_t time_started;
406 time64_t time_stopped;
407 atomic64_t num_write_errors;
408 atomic64_t num_uncorrectable_read_errors;
409
410 u64 cursor_left;
411 u64 committed_cursor_left;
412 u64 cursor_left_last_write_of_item;
413 u64 cursor_right;
414
415 u64 cont_reading_from_srcdev_mode;
416
417 int is_valid;
418 int item_needs_writeback;
419 struct btrfs_device *srcdev;
420 struct btrfs_device *tgtdev;
421
422 struct mutex lock_finishing_cancel_unmount;
423 struct rw_semaphore rwsem;
424
425 struct btrfs_scrub_progress scrub_progress;
426
427 struct percpu_counter bio_counter;
428 wait_queue_head_t replace_wait;
429};
430
431
432
433
434
435
436struct btrfs_free_cluster {
437 spinlock_t lock;
438 spinlock_t refill_lock;
439 struct rb_root root;
440
441
442 u64 max_size;
443
444
445 u64 window_start;
446
447
448 bool fragmented;
449
450 struct btrfs_block_group *block_group;
451
452
453
454
455
456 struct list_head block_group_list;
457};
458
459enum btrfs_caching_type {
460 BTRFS_CACHE_NO,
461 BTRFS_CACHE_STARTED,
462 BTRFS_CACHE_FAST,
463 BTRFS_CACHE_FINISHED,
464 BTRFS_CACHE_ERROR,
465};
466
467
468
469
470struct btrfs_full_stripe_locks_tree {
471 struct rb_root root;
472 struct mutex lock;
473};
474
475
476
477
478
479
480
481
482
483#define BTRFS_NR_DISCARD_LISTS 3
484#define BTRFS_DISCARD_INDEX_UNUSED 0
485#define BTRFS_DISCARD_INDEX_START 1
486
487struct btrfs_discard_ctl {
488 struct workqueue_struct *discard_workers;
489 struct delayed_work work;
490 spinlock_t lock;
491 struct btrfs_block_group *block_group;
492 struct list_head discard_list[BTRFS_NR_DISCARD_LISTS];
493 u64 prev_discard;
494 u64 prev_discard_time;
495 atomic_t discardable_extents;
496 atomic64_t discardable_bytes;
497 u64 max_discard_size;
498 u64 delay_ms;
499 u32 iops_limit;
500 u32 kbps_limit;
501 u64 discard_extent_bytes;
502 u64 discard_bitmap_bytes;
503 atomic64_t discard_bytes_saved;
504};
505
506enum btrfs_orphan_cleanup_state {
507 ORPHAN_CLEANUP_STARTED = 1,
508 ORPHAN_CLEANUP_DONE = 2,
509};
510
511void btrfs_init_async_reclaim_work(struct btrfs_fs_info *fs_info);
512
513
514struct reloc_control;
515struct btrfs_device;
516struct btrfs_fs_devices;
517struct btrfs_balance_control;
518struct btrfs_delayed_root;
519
520
521
522
523
524
525
526
527
528
529struct btrfs_swapfile_pin {
530 struct rb_node node;
531 void *ptr;
532 struct inode *inode;
533
534
535
536
537 bool is_block_group;
538
539
540
541
542 int bg_extent_count;
543};
544
545bool btrfs_pinned_by_swapfile(struct btrfs_fs_info *fs_info, void *ptr);
546
547enum {
548 BTRFS_FS_BARRIER,
549 BTRFS_FS_CLOSING_START,
550 BTRFS_FS_CLOSING_DONE,
551 BTRFS_FS_LOG_RECOVERING,
552 BTRFS_FS_OPEN,
553 BTRFS_FS_QUOTA_ENABLED,
554 BTRFS_FS_UPDATE_UUID_TREE_GEN,
555 BTRFS_FS_CREATING_FREE_SPACE_TREE,
556 BTRFS_FS_BTREE_ERR,
557 BTRFS_FS_LOG1_ERR,
558 BTRFS_FS_LOG2_ERR,
559 BTRFS_FS_QUOTA_OVERRIDE,
560
561 BTRFS_FS_FROZEN,
562
563
564
565
566 BTRFS_FS_BALANCE_RUNNING,
567
568
569
570
571
572
573 BTRFS_FS_RELOC_RUNNING,
574
575
576 BTRFS_FS_CLEANER_RUNNING,
577
578
579
580
581
582 BTRFS_FS_CSUM_IMPL_FAST,
583
584
585 BTRFS_FS_DISCARD_RUNNING,
586
587
588 BTRFS_FS_CLEANUP_SPACE_CACHE_V1,
589
590
591 BTRFS_FS_FREE_SPACE_TREE_UNTRUSTED,
592
593
594 BTRFS_FS_TREE_MOD_LOG_USERS,
595
596#if BITS_PER_LONG == 32
597
598 BTRFS_FS_32BIT_ERROR,
599 BTRFS_FS_32BIT_WARN,
600#endif
601};
602
603
604
605
606enum btrfs_exclusive_operation {
607 BTRFS_EXCLOP_NONE,
608 BTRFS_EXCLOP_BALANCE,
609 BTRFS_EXCLOP_DEV_ADD,
610 BTRFS_EXCLOP_DEV_REMOVE,
611 BTRFS_EXCLOP_DEV_REPLACE,
612 BTRFS_EXCLOP_RESIZE,
613 BTRFS_EXCLOP_SWAP_ACTIVATE,
614};
615
616struct btrfs_fs_info {
617 u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
618 unsigned long flags;
619 struct btrfs_root *extent_root;
620 struct btrfs_root *tree_root;
621 struct btrfs_root *chunk_root;
622 struct btrfs_root *dev_root;
623 struct btrfs_root *fs_root;
624 struct btrfs_root *csum_root;
625 struct btrfs_root *quota_root;
626 struct btrfs_root *uuid_root;
627 struct btrfs_root *free_space_root;
628 struct btrfs_root *data_reloc_root;
629
630
631 struct btrfs_root *log_root_tree;
632
633 spinlock_t fs_roots_radix_lock;
634 struct radix_tree_root fs_roots_radix;
635
636
637 spinlock_t block_group_cache_lock;
638 u64 first_logical_byte;
639 struct rb_root block_group_cache_tree;
640
641
642 atomic64_t free_chunk_space;
643
644
645 struct extent_io_tree excluded_extents;
646
647
648 struct extent_map_tree mapping_tree;
649
650
651
652
653
654 struct btrfs_block_rsv global_block_rsv;
655
656 struct btrfs_block_rsv trans_block_rsv;
657
658 struct btrfs_block_rsv chunk_block_rsv;
659
660 struct btrfs_block_rsv delayed_block_rsv;
661
662 struct btrfs_block_rsv delayed_refs_rsv;
663
664 struct btrfs_block_rsv empty_block_rsv;
665
666 u64 generation;
667 u64 last_trans_committed;
668 u64 avg_delayed_ref_runtime;
669
670
671
672
673
674 u64 last_trans_log_full_commit;
675 unsigned long mount_opt;
676
677
678
679
680 unsigned long pending_changes;
681 unsigned long compress_type:4;
682 unsigned int compress_level;
683 u32 commit_interval;
684
685
686
687
688
689
690 u64 max_inline;
691
692 struct btrfs_transaction *running_transaction;
693 wait_queue_head_t transaction_throttle;
694 wait_queue_head_t transaction_wait;
695 wait_queue_head_t transaction_blocked_wait;
696 wait_queue_head_t async_submit_wait;
697
698
699
700
701
702
703
704
705
706
707
708 spinlock_t super_lock;
709 struct btrfs_super_block *super_copy;
710 struct btrfs_super_block *super_for_commit;
711 struct super_block *sb;
712 struct inode *btree_inode;
713 struct mutex tree_log_mutex;
714 struct mutex transaction_kthread_mutex;
715 struct mutex cleaner_mutex;
716 struct mutex chunk_mutex;
717
718
719
720
721
722 struct mutex ro_block_group_mutex;
723
724
725
726
727
728 struct btrfs_stripe_hash_table *stripe_hash_table;
729
730
731
732
733
734
735
736
737 struct mutex ordered_operations_mutex;
738
739 struct rw_semaphore commit_root_sem;
740
741 struct rw_semaphore cleanup_work_sem;
742
743 struct rw_semaphore subvol_sem;
744
745 spinlock_t trans_lock;
746
747
748
749
750 struct mutex reloc_mutex;
751
752 struct list_head trans_list;
753 struct list_head dead_roots;
754 struct list_head caching_block_groups;
755
756 spinlock_t delayed_iput_lock;
757 struct list_head delayed_iputs;
758 atomic_t nr_delayed_iputs;
759 wait_queue_head_t delayed_iputs_wait;
760
761 atomic64_t tree_mod_seq;
762
763
764 rwlock_t tree_mod_log_lock;
765 struct rb_root tree_mod_log;
766 struct list_head tree_mod_seq_list;
767
768 atomic_t async_delalloc_pages;
769
770
771
772
773 spinlock_t ordered_root_lock;
774
775
776
777
778
779
780
781
782 struct list_head ordered_roots;
783
784 struct mutex delalloc_root_mutex;
785 spinlock_t delalloc_root_lock;
786
787 struct list_head delalloc_roots;
788
789
790
791
792
793
794
795
796
797
798
799 struct btrfs_workqueue *workers;
800 struct btrfs_workqueue *delalloc_workers;
801 struct btrfs_workqueue *flush_workers;
802 struct btrfs_workqueue *endio_workers;
803 struct btrfs_workqueue *endio_meta_workers;
804 struct btrfs_workqueue *endio_raid56_workers;
805 struct btrfs_workqueue *rmw_workers;
806 struct btrfs_workqueue *endio_meta_write_workers;
807 struct btrfs_workqueue *endio_write_workers;
808 struct btrfs_workqueue *endio_freespace_worker;
809 struct btrfs_workqueue *caching_workers;
810 struct btrfs_workqueue *readahead_workers;
811
812
813
814
815
816
817 struct btrfs_workqueue *fixup_workers;
818 struct btrfs_workqueue *delayed_workers;
819
820 struct task_struct *transaction_kthread;
821 struct task_struct *cleaner_kthread;
822 u32 thread_pool_size;
823
824 struct kobject *space_info_kobj;
825 struct kobject *qgroups_kobj;
826
827
828 struct percpu_counter dirty_metadata_bytes;
829 struct percpu_counter delalloc_bytes;
830 struct percpu_counter ordered_bytes;
831 s32 dirty_metadata_batch;
832 s32 delalloc_batch;
833
834 struct list_head dirty_cowonly_roots;
835
836 struct btrfs_fs_devices *fs_devices;
837
838
839
840
841
842
843 struct list_head space_info;
844
845 struct btrfs_space_info *data_sinfo;
846
847 struct reloc_control *reloc_ctl;
848
849
850 struct btrfs_free_cluster data_alloc_cluster;
851
852
853 struct btrfs_free_cluster meta_alloc_cluster;
854
855
856 spinlock_t defrag_inodes_lock;
857 struct rb_root defrag_inodes;
858 atomic_t defrag_running;
859
860
861 seqlock_t profiles_lock;
862
863
864
865
866
867 u64 avail_data_alloc_bits;
868 u64 avail_metadata_alloc_bits;
869 u64 avail_system_alloc_bits;
870
871
872 spinlock_t balance_lock;
873 struct mutex balance_mutex;
874 atomic_t balance_pause_req;
875 atomic_t balance_cancel_req;
876 struct btrfs_balance_control *balance_ctl;
877 wait_queue_head_t balance_wait_q;
878
879
880 atomic_t reloc_cancel_req;
881
882 u32 data_chunk_allocations;
883 u32 metadata_ratio;
884
885 void *bdev_holder;
886
887
888 struct mutex scrub_lock;
889 atomic_t scrubs_running;
890 atomic_t scrub_pause_req;
891 atomic_t scrubs_paused;
892 atomic_t scrub_cancel_req;
893 wait_queue_head_t scrub_pause_wait;
894
895
896
897
898 refcount_t scrub_workers_refcnt;
899 struct btrfs_workqueue *scrub_workers;
900 struct btrfs_workqueue *scrub_wr_completion_workers;
901 struct btrfs_workqueue *scrub_parity_workers;
902
903 struct btrfs_discard_ctl discard_ctl;
904
905#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
906 u32 check_integrity_print_mask;
907#endif
908
909 u64 qgroup_flags;
910
911
912 struct rb_root qgroup_tree;
913 spinlock_t qgroup_lock;
914
915
916
917
918
919 struct ulist *qgroup_ulist;
920
921
922
923
924
925 struct mutex qgroup_ioctl_lock;
926
927
928 struct list_head dirty_qgroups;
929
930
931 u64 qgroup_seq;
932
933
934 struct mutex qgroup_rescan_lock;
935 struct btrfs_key qgroup_rescan_progress;
936 struct btrfs_workqueue *qgroup_rescan_workers;
937 struct completion qgroup_rescan_completion;
938 struct btrfs_work qgroup_rescan_work;
939 bool qgroup_rescan_running;
940
941
942 unsigned long fs_state;
943
944 struct btrfs_delayed_root *delayed_root;
945
946
947 spinlock_t reada_lock;
948 struct radix_tree_root reada_tree;
949
950
951 atomic_t reada_works_cnt;
952
953
954 spinlock_t buffer_lock;
955
956 struct radix_tree_root buffer_radix;
957
958
959 int backup_root_index;
960
961
962 struct btrfs_dev_replace dev_replace;
963
964 struct semaphore uuid_tree_rescan_sem;
965
966
967 struct work_struct async_reclaim_work;
968 struct work_struct async_data_reclaim_work;
969 struct work_struct preempt_reclaim_work;
970
971
972 struct work_struct reclaim_bgs_work;
973 struct list_head reclaim_bgs;
974 int bg_reclaim_threshold;
975
976 spinlock_t unused_bgs_lock;
977 struct list_head unused_bgs;
978 struct mutex unused_bg_unpin_mutex;
979
980 struct mutex reclaim_bgs_lock;
981
982
983 u32 nodesize;
984 u32 sectorsize;
985
986 u32 sectorsize_bits;
987 u32 csum_size;
988 u32 csums_per_leaf;
989 u32 stripesize;
990
991
992 spinlock_t swapfile_pins_lock;
993 struct rb_root swapfile_pins;
994
995 struct crypto_shash *csum_shash;
996
997 spinlock_t send_reloc_lock;
998
999
1000
1001
1002 int send_in_progress;
1003
1004
1005 enum btrfs_exclusive_operation exclusive_operation;
1006
1007
1008
1009
1010
1011 union {
1012 u64 zone_size;
1013 u64 zoned;
1014 };
1015
1016 struct mutex zoned_meta_io_lock;
1017 spinlock_t treelog_bg_lock;
1018 u64 treelog_bg;
1019
1020#ifdef CONFIG_BTRFS_FS_REF_VERIFY
1021 spinlock_t ref_verify_lock;
1022 struct rb_root block_tree;
1023#endif
1024
1025#ifdef CONFIG_BTRFS_DEBUG
1026 struct kobject *debug_kobj;
1027 struct kobject *discard_debug_kobj;
1028 struct list_head allocated_roots;
1029
1030 spinlock_t eb_leak_lock;
1031 struct list_head allocated_ebs;
1032#endif
1033};
1034
1035static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb)
1036{
1037 return sb->s_fs_info;
1038}
1039
1040
1041
1042
1043enum {
1044
1045
1046
1047
1048
1049
1050 BTRFS_ROOT_IN_TRANS_SETUP,
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072 BTRFS_ROOT_SHAREABLE,
1073 BTRFS_ROOT_TRACK_DIRTY,
1074 BTRFS_ROOT_IN_RADIX,
1075 BTRFS_ROOT_ORPHAN_ITEM_INSERTED,
1076 BTRFS_ROOT_DEFRAG_RUNNING,
1077 BTRFS_ROOT_FORCE_COW,
1078 BTRFS_ROOT_MULTI_LOG_TASKS,
1079 BTRFS_ROOT_DIRTY,
1080 BTRFS_ROOT_DELETING,
1081
1082
1083
1084
1085
1086
1087 BTRFS_ROOT_DEAD_RELOC_TREE,
1088
1089 BTRFS_ROOT_DEAD_TREE,
1090
1091 BTRFS_ROOT_HAS_LOG_TREE,
1092
1093 BTRFS_ROOT_QGROUP_FLUSHING,
1094};
1095
1096
1097
1098
1099
1100struct btrfs_qgroup_swapped_blocks {
1101 spinlock_t lock;
1102
1103 bool swapped;
1104 struct rb_root blocks[BTRFS_MAX_LEVEL];
1105};
1106
1107
1108
1109
1110
1111struct btrfs_root {
1112 struct extent_buffer *node;
1113
1114 struct extent_buffer *commit_root;
1115 struct btrfs_root *log_root;
1116 struct btrfs_root *reloc_root;
1117
1118 unsigned long state;
1119 struct btrfs_root_item root_item;
1120 struct btrfs_key root_key;
1121 struct btrfs_fs_info *fs_info;
1122 struct extent_io_tree dirty_log_pages;
1123
1124 struct mutex objectid_mutex;
1125
1126 spinlock_t accounting_lock;
1127 struct btrfs_block_rsv *block_rsv;
1128
1129 struct mutex log_mutex;
1130 wait_queue_head_t log_writer_wait;
1131 wait_queue_head_t log_commit_wait[2];
1132 struct list_head log_ctxs[2];
1133
1134 atomic_t log_writers;
1135 atomic_t log_commit[2];
1136
1137 atomic_t log_batch;
1138 int log_transid;
1139
1140 int log_transid_committed;
1141
1142 int last_log_commit;
1143 pid_t log_start_pid;
1144
1145 u64 last_trans;
1146
1147 u32 type;
1148
1149 u64 free_objectid;
1150
1151 struct btrfs_key defrag_progress;
1152 struct btrfs_key defrag_max;
1153
1154
1155 struct list_head dirty_list;
1156
1157 struct list_head root_list;
1158
1159 spinlock_t log_extents_lock[2];
1160 struct list_head logged_list[2];
1161
1162 int orphan_cleanup_state;
1163
1164 spinlock_t inode_lock;
1165
1166 struct rb_root inode_tree;
1167
1168
1169
1170
1171
1172 struct radix_tree_root delayed_nodes_tree;
1173
1174
1175
1176
1177 dev_t anon_dev;
1178
1179 spinlock_t root_item_lock;
1180 refcount_t refs;
1181
1182 struct mutex delalloc_mutex;
1183 spinlock_t delalloc_lock;
1184
1185
1186
1187
1188
1189 struct list_head delalloc_inodes;
1190 struct list_head delalloc_root;
1191 u64 nr_delalloc_inodes;
1192
1193 struct mutex ordered_extent_mutex;
1194
1195
1196
1197
1198 spinlock_t ordered_extent_lock;
1199
1200
1201
1202
1203
1204
1205 struct list_head ordered_extents;
1206 struct list_head ordered_root;
1207 u64 nr_ordered_extents;
1208
1209
1210
1211
1212
1213
1214
1215 struct list_head reloc_dirty_list;
1216
1217
1218
1219
1220
1221 int send_in_progress;
1222
1223
1224
1225
1226
1227 int dedupe_in_progress;
1228
1229 struct btrfs_drew_lock snapshot_lock;
1230
1231 atomic_t snapshot_force_cow;
1232
1233
1234 spinlock_t qgroup_meta_rsv_lock;
1235 u64 qgroup_meta_rsv_pertrans;
1236 u64 qgroup_meta_rsv_prealloc;
1237 wait_queue_head_t qgroup_flush_wait;
1238
1239
1240 atomic_t nr_swapfiles;
1241
1242
1243 struct btrfs_qgroup_swapped_blocks swapped_blocks;
1244
1245
1246 struct extent_io_tree log_csum_range;
1247
1248#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
1249 u64 alloc_bytenr;
1250#endif
1251
1252#ifdef CONFIG_BTRFS_DEBUG
1253 struct list_head leak_list;
1254#endif
1255};
1256
1257
1258
1259
1260
1261struct btrfs_replace_extent_info {
1262 u64 disk_offset;
1263 u64 disk_len;
1264 u64 data_offset;
1265 u64 data_len;
1266 u64 file_offset;
1267
1268 char *extent_buf;
1269
1270
1271
1272
1273
1274 bool is_new_extent;
1275
1276 int qgroup_reserved;
1277
1278
1279
1280
1281
1282
1283
1284 int insertions;
1285};
1286
1287
1288struct btrfs_drop_extents_args {
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298 struct btrfs_path *path;
1299
1300 u64 start;
1301
1302 u64 end;
1303
1304 bool drop_cache;
1305
1306
1307
1308
1309
1310
1311
1312
1313 bool replace_extent;
1314
1315
1316
1317
1318 u32 extent_item_size;
1319
1320
1321
1322
1323
1324
1325
1326
1327 u64 drop_end;
1328
1329
1330
1331
1332 u64 bytes_found;
1333
1334
1335
1336
1337
1338
1339
1340
1341 bool extent_inserted;
1342};
1343
1344struct btrfs_file_private {
1345 void *filldir_buf;
1346};
1347
1348
1349static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info)
1350{
1351
1352 return info->nodesize - sizeof(struct btrfs_header);
1353}
1354
1355#define BTRFS_LEAF_DATA_OFFSET offsetof(struct btrfs_leaf, items)
1356
1357static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info)
1358{
1359 return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item);
1360}
1361
1362static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info)
1363{
1364 return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr);
1365}
1366
1367#define BTRFS_FILE_EXTENT_INLINE_DATA_START \
1368 (offsetof(struct btrfs_file_extent_item, disk_bytenr))
1369static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info)
1370{
1371 return BTRFS_MAX_ITEM_SIZE(info) -
1372 BTRFS_FILE_EXTENT_INLINE_DATA_START;
1373}
1374
1375static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info)
1376{
1377 return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item);
1378}
1379
1380
1381
1382
1383
1384
1385enum {
1386 BTRFS_MOUNT_NODATASUM = (1UL << 0),
1387 BTRFS_MOUNT_NODATACOW = (1UL << 1),
1388 BTRFS_MOUNT_NOBARRIER = (1UL << 2),
1389 BTRFS_MOUNT_SSD = (1UL << 3),
1390 BTRFS_MOUNT_DEGRADED = (1UL << 4),
1391 BTRFS_MOUNT_COMPRESS = (1UL << 5),
1392 BTRFS_MOUNT_NOTREELOG = (1UL << 6),
1393 BTRFS_MOUNT_FLUSHONCOMMIT = (1UL << 7),
1394 BTRFS_MOUNT_SSD_SPREAD = (1UL << 8),
1395 BTRFS_MOUNT_NOSSD = (1UL << 9),
1396 BTRFS_MOUNT_DISCARD_SYNC = (1UL << 10),
1397 BTRFS_MOUNT_FORCE_COMPRESS = (1UL << 11),
1398 BTRFS_MOUNT_SPACE_CACHE = (1UL << 12),
1399 BTRFS_MOUNT_CLEAR_CACHE = (1UL << 13),
1400 BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED = (1UL << 14),
1401 BTRFS_MOUNT_ENOSPC_DEBUG = (1UL << 15),
1402 BTRFS_MOUNT_AUTO_DEFRAG = (1UL << 16),
1403 BTRFS_MOUNT_USEBACKUPROOT = (1UL << 17),
1404 BTRFS_MOUNT_SKIP_BALANCE = (1UL << 18),
1405 BTRFS_MOUNT_CHECK_INTEGRITY = (1UL << 19),
1406 BTRFS_MOUNT_CHECK_INTEGRITY_DATA = (1UL << 20),
1407 BTRFS_MOUNT_PANIC_ON_FATAL_ERROR = (1UL << 21),
1408 BTRFS_MOUNT_RESCAN_UUID_TREE = (1UL << 22),
1409 BTRFS_MOUNT_FRAGMENT_DATA = (1UL << 23),
1410 BTRFS_MOUNT_FRAGMENT_METADATA = (1UL << 24),
1411 BTRFS_MOUNT_FREE_SPACE_TREE = (1UL << 25),
1412 BTRFS_MOUNT_NOLOGREPLAY = (1UL << 26),
1413 BTRFS_MOUNT_REF_VERIFY = (1UL << 27),
1414 BTRFS_MOUNT_DISCARD_ASYNC = (1UL << 28),
1415 BTRFS_MOUNT_IGNOREBADROOTS = (1UL << 29),
1416 BTRFS_MOUNT_IGNOREDATACSUMS = (1UL << 30),
1417};
1418
1419#define BTRFS_DEFAULT_COMMIT_INTERVAL (30)
1420#define BTRFS_DEFAULT_MAX_INLINE (2048)
1421
1422#define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt)
1423#define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt)
1424#define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt)
1425#define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \
1426 BTRFS_MOUNT_##opt)
1427
1428#define btrfs_set_and_info(fs_info, opt, fmt, args...) \
1429do { \
1430 if (!btrfs_test_opt(fs_info, opt)) \
1431 btrfs_info(fs_info, fmt, ##args); \
1432 btrfs_set_opt(fs_info->mount_opt, opt); \
1433} while (0)
1434
1435#define btrfs_clear_and_info(fs_info, opt, fmt, args...) \
1436do { \
1437 if (btrfs_test_opt(fs_info, opt)) \
1438 btrfs_info(fs_info, fmt, ##args); \
1439 btrfs_clear_opt(fs_info->mount_opt, opt); \
1440} while (0)
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450#define BTRFS_PENDING_COMMIT (0)
1451
1452#define btrfs_test_pending(info, opt) \
1453 test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes)
1454#define btrfs_set_pending(info, opt) \
1455 set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes)
1456#define btrfs_clear_pending(info, opt) \
1457 clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes)
1458
1459
1460
1461
1462
1463
1464
1465#define btrfs_set_pending_and_info(info, opt, fmt, args...) \
1466do { \
1467 if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \
1468 btrfs_info((info), fmt, ##args); \
1469 btrfs_set_pending((info), SET_##opt); \
1470 btrfs_clear_pending((info), CLEAR_##opt); \
1471 } \
1472} while(0)
1473
1474#define btrfs_clear_pending_and_info(info, opt, fmt, args...) \
1475do { \
1476 if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \
1477 btrfs_info((info), fmt, ##args); \
1478 btrfs_set_pending((info), CLEAR_##opt); \
1479 btrfs_clear_pending((info), SET_##opt); \
1480 } \
1481} while(0)
1482
1483
1484
1485
1486#define BTRFS_INODE_NODATASUM (1U << 0)
1487#define BTRFS_INODE_NODATACOW (1U << 1)
1488#define BTRFS_INODE_READONLY (1U << 2)
1489#define BTRFS_INODE_NOCOMPRESS (1U << 3)
1490#define BTRFS_INODE_PREALLOC (1U << 4)
1491#define BTRFS_INODE_SYNC (1U << 5)
1492#define BTRFS_INODE_IMMUTABLE (1U << 6)
1493#define BTRFS_INODE_APPEND (1U << 7)
1494#define BTRFS_INODE_NODUMP (1U << 8)
1495#define BTRFS_INODE_NOATIME (1U << 9)
1496#define BTRFS_INODE_DIRSYNC (1U << 10)
1497#define BTRFS_INODE_COMPRESS (1U << 11)
1498
1499#define BTRFS_INODE_ROOT_ITEM_INIT (1U << 31)
1500
1501#define BTRFS_INODE_FLAG_MASK \
1502 (BTRFS_INODE_NODATASUM | \
1503 BTRFS_INODE_NODATACOW | \
1504 BTRFS_INODE_READONLY | \
1505 BTRFS_INODE_NOCOMPRESS | \
1506 BTRFS_INODE_PREALLOC | \
1507 BTRFS_INODE_SYNC | \
1508 BTRFS_INODE_IMMUTABLE | \
1509 BTRFS_INODE_APPEND | \
1510 BTRFS_INODE_NODUMP | \
1511 BTRFS_INODE_NOATIME | \
1512 BTRFS_INODE_DIRSYNC | \
1513 BTRFS_INODE_COMPRESS | \
1514 BTRFS_INODE_ROOT_ITEM_INIT)
1515
1516#define BTRFS_INODE_RO_VERITY (1U << 0)
1517
1518#define BTRFS_INODE_RO_FLAG_MASK (BTRFS_INODE_RO_VERITY)
1519
1520struct btrfs_map_token {
1521 struct extent_buffer *eb;
1522 char *kaddr;
1523 unsigned long offset;
1524};
1525
1526#define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \
1527 ((bytes) >> (fs_info)->sectorsize_bits)
1528
1529static inline void btrfs_init_map_token(struct btrfs_map_token *token,
1530 struct extent_buffer *eb)
1531{
1532 token->eb = eb;
1533 token->kaddr = page_address(eb->pages[0]);
1534 token->offset = 0;
1535}
1536
1537
1538
1539
1540
1541#define le8_to_cpu(v) (v)
1542#define cpu_to_le8(v) (v)
1543#define __le8 u8
1544
1545static inline u8 get_unaligned_le8(const void *p)
1546{
1547 return *(u8 *)p;
1548}
1549
1550static inline void put_unaligned_le8(u8 val, void *p)
1551{
1552 *(u8 *)p = val;
1553}
1554
1555#define read_eb_member(eb, ptr, type, member, result) (\
1556 read_extent_buffer(eb, (char *)(result), \
1557 ((unsigned long)(ptr)) + \
1558 offsetof(type, member), \
1559 sizeof(((type *)0)->member)))
1560
1561#define write_eb_member(eb, ptr, type, member, result) (\
1562 write_extent_buffer(eb, (char *)(result), \
1563 ((unsigned long)(ptr)) + \
1564 offsetof(type, member), \
1565 sizeof(((type *)0)->member)))
1566
1567#define DECLARE_BTRFS_SETGET_BITS(bits) \
1568u##bits btrfs_get_token_##bits(struct btrfs_map_token *token, \
1569 const void *ptr, unsigned long off); \
1570void btrfs_set_token_##bits(struct btrfs_map_token *token, \
1571 const void *ptr, unsigned long off, \
1572 u##bits val); \
1573u##bits btrfs_get_##bits(const struct extent_buffer *eb, \
1574 const void *ptr, unsigned long off); \
1575void btrfs_set_##bits(const struct extent_buffer *eb, void *ptr, \
1576 unsigned long off, u##bits val);
1577
1578DECLARE_BTRFS_SETGET_BITS(8)
1579DECLARE_BTRFS_SETGET_BITS(16)
1580DECLARE_BTRFS_SETGET_BITS(32)
1581DECLARE_BTRFS_SETGET_BITS(64)
1582
1583#define BTRFS_SETGET_FUNCS(name, type, member, bits) \
1584static inline u##bits btrfs_##name(const struct extent_buffer *eb, \
1585 const type *s) \
1586{ \
1587 BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
1588 return btrfs_get_##bits(eb, s, offsetof(type, member)); \
1589} \
1590static inline void btrfs_set_##name(const struct extent_buffer *eb, type *s, \
1591 u##bits val) \
1592{ \
1593 BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
1594 btrfs_set_##bits(eb, s, offsetof(type, member), val); \
1595} \
1596static inline u##bits btrfs_token_##name(struct btrfs_map_token *token, \
1597 const type *s) \
1598{ \
1599 BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
1600 return btrfs_get_token_##bits(token, s, offsetof(type, member));\
1601} \
1602static inline void btrfs_set_token_##name(struct btrfs_map_token *token,\
1603 type *s, u##bits val) \
1604{ \
1605 BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
1606 btrfs_set_token_##bits(token, s, offsetof(type, member), val); \
1607}
1608
1609#define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
1610static inline u##bits btrfs_##name(const struct extent_buffer *eb) \
1611{ \
1612 const type *p = page_address(eb->pages[0]) + \
1613 offset_in_page(eb->start); \
1614 return get_unaligned_le##bits(&p->member); \
1615} \
1616static inline void btrfs_set_##name(const struct extent_buffer *eb, \
1617 u##bits val) \
1618{ \
1619 type *p = page_address(eb->pages[0]) + offset_in_page(eb->start); \
1620 put_unaligned_le##bits(val, &p->member); \
1621}
1622
1623#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
1624static inline u##bits btrfs_##name(const type *s) \
1625{ \
1626 return get_unaligned_le##bits(&s->member); \
1627} \
1628static inline void btrfs_set_##name(type *s, u##bits val) \
1629{ \
1630 put_unaligned_le##bits(val, &s->member); \
1631}
1632
1633static inline u64 btrfs_device_total_bytes(const struct extent_buffer *eb,
1634 struct btrfs_dev_item *s)
1635{
1636 BUILD_BUG_ON(sizeof(u64) !=
1637 sizeof(((struct btrfs_dev_item *)0))->total_bytes);
1638 return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item,
1639 total_bytes));
1640}
1641static inline void btrfs_set_device_total_bytes(const struct extent_buffer *eb,
1642 struct btrfs_dev_item *s,
1643 u64 val)
1644{
1645 BUILD_BUG_ON(sizeof(u64) !=
1646 sizeof(((struct btrfs_dev_item *)0))->total_bytes);
1647 WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize));
1648 btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val);
1649}
1650
1651
1652BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64);
1653BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64);
1654BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32);
1655BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32);
1656BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item,
1657 start_offset, 64);
1658BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32);
1659BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64);
1660BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32);
1661BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8);
1662BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8);
1663BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64);
1664
1665BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64);
1666BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item,
1667 total_bytes, 64);
1668BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item,
1669 bytes_used, 64);
1670BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item,
1671 io_align, 32);
1672BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item,
1673 io_width, 32);
1674BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item,
1675 sector_size, 32);
1676BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64);
1677BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item,
1678 dev_group, 32);
1679BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item,
1680 seek_speed, 8);
1681BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item,
1682 bandwidth, 8);
1683BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item,
1684 generation, 64);
1685
1686static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d)
1687{
1688 return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid);
1689}
1690
1691static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d)
1692{
1693 return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid);
1694}
1695
1696BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64);
1697BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64);
1698BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64);
1699BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32);
1700BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32);
1701BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32);
1702BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64);
1703BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16);
1704BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16);
1705BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64);
1706BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64);
1707
1708static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s)
1709{
1710 return (char *)s + offsetof(struct btrfs_stripe, dev_uuid);
1711}
1712
1713BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64);
1714BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64);
1715BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk,
1716 stripe_len, 64);
1717BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk,
1718 io_align, 32);
1719BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk,
1720 io_width, 32);
1721BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk,
1722 sector_size, 32);
1723BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64);
1724BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk,
1725 num_stripes, 16);
1726BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk,
1727 sub_stripes, 16);
1728BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64);
1729BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64);
1730
1731static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c,
1732 int nr)
1733{
1734 unsigned long offset = (unsigned long)c;
1735 offset += offsetof(struct btrfs_chunk, stripe);
1736 offset += nr * sizeof(struct btrfs_stripe);
1737 return (struct btrfs_stripe *)offset;
1738}
1739
1740static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr)
1741{
1742 return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr));
1743}
1744
1745static inline u64 btrfs_stripe_offset_nr(const struct extent_buffer *eb,
1746 struct btrfs_chunk *c, int nr)
1747{
1748 return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr));
1749}
1750
1751static inline u64 btrfs_stripe_devid_nr(const struct extent_buffer *eb,
1752 struct btrfs_chunk *c, int nr)
1753{
1754 return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr));
1755}
1756
1757
1758BTRFS_SETGET_STACK_FUNCS(stack_block_group_used, struct btrfs_block_group_item,
1759 used, 64);
1760BTRFS_SETGET_FUNCS(block_group_used, struct btrfs_block_group_item,
1761 used, 64);
1762BTRFS_SETGET_STACK_FUNCS(stack_block_group_chunk_objectid,
1763 struct btrfs_block_group_item, chunk_objectid, 64);
1764
1765BTRFS_SETGET_FUNCS(block_group_chunk_objectid,
1766 struct btrfs_block_group_item, chunk_objectid, 64);
1767BTRFS_SETGET_FUNCS(block_group_flags,
1768 struct btrfs_block_group_item, flags, 64);
1769BTRFS_SETGET_STACK_FUNCS(stack_block_group_flags,
1770 struct btrfs_block_group_item, flags, 64);
1771
1772
1773BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info,
1774 extent_count, 32);
1775BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32);
1776
1777
1778BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16);
1779BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64);
1780
1781
1782BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref,
1783 parent_objectid, 64);
1784BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref,
1785 name_len, 16);
1786BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64);
1787
1788
1789BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64);
1790BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64);
1791BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64);
1792BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64);
1793BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64);
1794BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64);
1795BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32);
1796BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32);
1797BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32);
1798BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32);
1799BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64);
1800BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64);
1801BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item,
1802 generation, 64);
1803BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item,
1804 sequence, 64);
1805BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item,
1806 transid, 64);
1807BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64);
1808BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item,
1809 nbytes, 64);
1810BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item,
1811 block_group, 64);
1812BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32);
1813BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32);
1814BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32);
1815BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32);
1816BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64);
1817BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64);
1818BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64);
1819BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32);
1820BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64);
1821BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32);
1822
1823
1824BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent,
1825 chunk_tree, 64);
1826BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent,
1827 chunk_objectid, 64);
1828BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent,
1829 chunk_offset, 64);
1830BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64);
1831BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64);
1832BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item,
1833 generation, 64);
1834BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64);
1835
1836BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8);
1837
1838static inline void btrfs_tree_block_key(const struct extent_buffer *eb,
1839 struct btrfs_tree_block_info *item,
1840 struct btrfs_disk_key *key)
1841{
1842 read_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
1843}
1844
1845static inline void btrfs_set_tree_block_key(const struct extent_buffer *eb,
1846 struct btrfs_tree_block_info *item,
1847 struct btrfs_disk_key *key)
1848{
1849 write_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
1850}
1851
1852BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref,
1853 root, 64);
1854BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref,
1855 objectid, 64);
1856BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref,
1857 offset, 64);
1858BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref,
1859 count, 32);
1860
1861BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref,
1862 count, 32);
1863
1864BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref,
1865 type, 8);
1866BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref,
1867 offset, 64);
1868
1869static inline u32 btrfs_extent_inline_ref_size(int type)
1870{
1871 if (type == BTRFS_TREE_BLOCK_REF_KEY ||
1872 type == BTRFS_SHARED_BLOCK_REF_KEY)
1873 return sizeof(struct btrfs_extent_inline_ref);
1874 if (type == BTRFS_SHARED_DATA_REF_KEY)
1875 return sizeof(struct btrfs_shared_data_ref) +
1876 sizeof(struct btrfs_extent_inline_ref);
1877 if (type == BTRFS_EXTENT_DATA_REF_KEY)
1878 return sizeof(struct btrfs_extent_data_ref) +
1879 offsetof(struct btrfs_extent_inline_ref, offset);
1880 return 0;
1881}
1882
1883
1884BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64);
1885BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64);
1886BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr,
1887 blockptr, 64);
1888BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr,
1889 generation, 64);
1890
1891static inline u64 btrfs_node_blockptr(const struct extent_buffer *eb, int nr)
1892{
1893 unsigned long ptr;
1894 ptr = offsetof(struct btrfs_node, ptrs) +
1895 sizeof(struct btrfs_key_ptr) * nr;
1896 return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr);
1897}
1898
1899static inline void btrfs_set_node_blockptr(const struct extent_buffer *eb,
1900 int nr, u64 val)
1901{
1902 unsigned long ptr;
1903 ptr = offsetof(struct btrfs_node, ptrs) +
1904 sizeof(struct btrfs_key_ptr) * nr;
1905 btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val);
1906}
1907
1908static inline u64 btrfs_node_ptr_generation(const struct extent_buffer *eb, int nr)
1909{
1910 unsigned long ptr;
1911 ptr = offsetof(struct btrfs_node, ptrs) +
1912 sizeof(struct btrfs_key_ptr) * nr;
1913 return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr);
1914}
1915
1916static inline void btrfs_set_node_ptr_generation(const struct extent_buffer *eb,
1917 int nr, u64 val)
1918{
1919 unsigned long ptr;
1920 ptr = offsetof(struct btrfs_node, ptrs) +
1921 sizeof(struct btrfs_key_ptr) * nr;
1922 btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val);
1923}
1924
1925static inline unsigned long btrfs_node_key_ptr_offset(int nr)
1926{
1927 return offsetof(struct btrfs_node, ptrs) +
1928 sizeof(struct btrfs_key_ptr) * nr;
1929}
1930
1931void btrfs_node_key(const struct extent_buffer *eb,
1932 struct btrfs_disk_key *disk_key, int nr);
1933
1934static inline void btrfs_set_node_key(const struct extent_buffer *eb,
1935 struct btrfs_disk_key *disk_key, int nr)
1936{
1937 unsigned long ptr;
1938 ptr = btrfs_node_key_ptr_offset(nr);
1939 write_eb_member(eb, (struct btrfs_key_ptr *)ptr,
1940 struct btrfs_key_ptr, key, disk_key);
1941}
1942
1943
1944BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32);
1945BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32);
1946BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32);
1947BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32);
1948
1949static inline unsigned long btrfs_item_nr_offset(int nr)
1950{
1951 return offsetof(struct btrfs_leaf, items) +
1952 sizeof(struct btrfs_item) * nr;
1953}
1954
1955static inline struct btrfs_item *btrfs_item_nr(int nr)
1956{
1957 return (struct btrfs_item *)btrfs_item_nr_offset(nr);
1958}
1959
1960static inline u32 btrfs_item_end(const struct extent_buffer *eb,
1961 struct btrfs_item *item)
1962{
1963 return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item);
1964}
1965
1966static inline u32 btrfs_item_end_nr(const struct extent_buffer *eb, int nr)
1967{
1968 return btrfs_item_end(eb, btrfs_item_nr(nr));
1969}
1970
1971static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr)
1972{
1973 return btrfs_item_offset(eb, btrfs_item_nr(nr));
1974}
1975
1976static inline u32 btrfs_item_size_nr(const struct extent_buffer *eb, int nr)
1977{
1978 return btrfs_item_size(eb, btrfs_item_nr(nr));
1979}
1980
1981static inline void btrfs_item_key(const struct extent_buffer *eb,
1982 struct btrfs_disk_key *disk_key, int nr)
1983{
1984 struct btrfs_item *item = btrfs_item_nr(nr);
1985 read_eb_member(eb, item, struct btrfs_item, key, disk_key);
1986}
1987
1988static inline void btrfs_set_item_key(struct extent_buffer *eb,
1989 struct btrfs_disk_key *disk_key, int nr)
1990{
1991 struct btrfs_item *item = btrfs_item_nr(nr);
1992 write_eb_member(eb, item, struct btrfs_item, key, disk_key);
1993}
1994
1995BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64);
1996
1997
1998
1999
2000BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64);
2001BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64);
2002BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16);
2003
2004
2005BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16);
2006BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8);
2007BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16);
2008BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64);
2009BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8);
2010BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item,
2011 data_len, 16);
2012BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item,
2013 name_len, 16);
2014BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item,
2015 transid, 64);
2016
2017static inline void btrfs_dir_item_key(const struct extent_buffer *eb,
2018 const struct btrfs_dir_item *item,
2019 struct btrfs_disk_key *key)
2020{
2021 read_eb_member(eb, item, struct btrfs_dir_item, location, key);
2022}
2023
2024static inline void btrfs_set_dir_item_key(struct extent_buffer *eb,
2025 struct btrfs_dir_item *item,
2026 const struct btrfs_disk_key *key)
2027{
2028 write_eb_member(eb, item, struct btrfs_dir_item, location, key);
2029}
2030
2031BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header,
2032 num_entries, 64);
2033BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header,
2034 num_bitmaps, 64);
2035BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header,
2036 generation, 64);
2037
2038static inline void btrfs_free_space_key(const struct extent_buffer *eb,
2039 const struct btrfs_free_space_header *h,
2040 struct btrfs_disk_key *key)
2041{
2042 read_eb_member(eb, h, struct btrfs_free_space_header, location, key);
2043}
2044
2045static inline void btrfs_set_free_space_key(struct extent_buffer *eb,
2046 struct btrfs_free_space_header *h,
2047 const struct btrfs_disk_key *key)
2048{
2049 write_eb_member(eb, h, struct btrfs_free_space_header, location, key);
2050}
2051
2052
2053BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key,
2054 objectid, 64);
2055BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64);
2056BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8);
2057
2058#ifdef __LITTLE_ENDIAN
2059
2060
2061
2062
2063
2064
2065static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu_key,
2066 const struct btrfs_disk_key *disk_key)
2067{
2068 memcpy(cpu_key, disk_key, sizeof(struct btrfs_key));
2069}
2070
2071static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk_key,
2072 const struct btrfs_key *cpu_key)
2073{
2074 memcpy(disk_key, cpu_key, sizeof(struct btrfs_key));
2075}
2076
2077static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb,
2078 struct btrfs_key *cpu_key, int nr)
2079{
2080 struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key;
2081
2082 btrfs_node_key(eb, disk_key, nr);
2083}
2084
2085static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb,
2086 struct btrfs_key *cpu_key, int nr)
2087{
2088 struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key;
2089
2090 btrfs_item_key(eb, disk_key, nr);
2091}
2092
2093static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb,
2094 const struct btrfs_dir_item *item,
2095 struct btrfs_key *cpu_key)
2096{
2097 struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key;
2098
2099 btrfs_dir_item_key(eb, item, disk_key);
2100}
2101
2102#else
2103
2104static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu,
2105 const struct btrfs_disk_key *disk)
2106{
2107 cpu->offset = le64_to_cpu(disk->offset);
2108 cpu->type = disk->type;
2109 cpu->objectid = le64_to_cpu(disk->objectid);
2110}
2111
2112static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk,
2113 const struct btrfs_key *cpu)
2114{
2115 disk->offset = cpu_to_le64(cpu->offset);
2116 disk->type = cpu->type;
2117 disk->objectid = cpu_to_le64(cpu->objectid);
2118}
2119
2120static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb,
2121 struct btrfs_key *key, int nr)
2122{
2123 struct btrfs_disk_key disk_key;
2124 btrfs_node_key(eb, &disk_key, nr);
2125 btrfs_disk_key_to_cpu(key, &disk_key);
2126}
2127
2128static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb,
2129 struct btrfs_key *key, int nr)
2130{
2131 struct btrfs_disk_key disk_key;
2132 btrfs_item_key(eb, &disk_key, nr);
2133 btrfs_disk_key_to_cpu(key, &disk_key);
2134}
2135
2136static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb,
2137 const struct btrfs_dir_item *item,
2138 struct btrfs_key *key)
2139{
2140 struct btrfs_disk_key disk_key;
2141 btrfs_dir_item_key(eb, item, &disk_key);
2142 btrfs_disk_key_to_cpu(key, &disk_key);
2143}
2144
2145#endif
2146
2147
2148BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64);
2149BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header,
2150 generation, 64);
2151BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64);
2152BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32);
2153BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64);
2154BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8);
2155BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header,
2156 generation, 64);
2157BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64);
2158BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header,
2159 nritems, 32);
2160BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64);
2161
2162static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag)
2163{
2164 return (btrfs_header_flags(eb) & flag) == flag;
2165}
2166
2167static inline void btrfs_set_header_flag(struct extent_buffer *eb, u64 flag)
2168{
2169 u64 flags = btrfs_header_flags(eb);
2170 btrfs_set_header_flags(eb, flags | flag);
2171}
2172
2173static inline void btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag)
2174{
2175 u64 flags = btrfs_header_flags(eb);
2176 btrfs_set_header_flags(eb, flags & ~flag);
2177}
2178
2179static inline int btrfs_header_backref_rev(const struct extent_buffer *eb)
2180{
2181 u64 flags = btrfs_header_flags(eb);
2182 return flags >> BTRFS_BACKREF_REV_SHIFT;
2183}
2184
2185static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb,
2186 int rev)
2187{
2188 u64 flags = btrfs_header_flags(eb);
2189 flags &= ~BTRFS_BACKREF_REV_MASK;
2190 flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT;
2191 btrfs_set_header_flags(eb, flags);
2192}
2193
2194static inline int btrfs_is_leaf(const struct extent_buffer *eb)
2195{
2196 return btrfs_header_level(eb) == 0;
2197}
2198
2199
2200BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item,
2201 generation, 64);
2202BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32);
2203BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64);
2204BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8);
2205
2206BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item,
2207 generation, 64);
2208BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64);
2209BTRFS_SETGET_STACK_FUNCS(root_drop_level, struct btrfs_root_item, drop_level, 8);
2210BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8);
2211BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64);
2212BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32);
2213BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64);
2214BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64);
2215BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64);
2216BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item,
2217 last_snapshot, 64);
2218BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item,
2219 generation_v2, 64);
2220BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item,
2221 ctransid, 64);
2222BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item,
2223 otransid, 64);
2224BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item,
2225 stransid, 64);
2226BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item,
2227 rtransid, 64);
2228
2229static inline bool btrfs_root_readonly(const struct btrfs_root *root)
2230{
2231
2232 return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0;
2233}
2234
2235static inline bool btrfs_root_dead(const struct btrfs_root *root)
2236{
2237
2238 return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0;
2239}
2240
2241
2242BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup,
2243 tree_root, 64);
2244BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup,
2245 tree_root_gen, 64);
2246BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup,
2247 tree_root_level, 8);
2248
2249BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup,
2250 chunk_root, 64);
2251BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup,
2252 chunk_root_gen, 64);
2253BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup,
2254 chunk_root_level, 8);
2255
2256BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup,
2257 extent_root, 64);
2258BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup,
2259 extent_root_gen, 64);
2260BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup,
2261 extent_root_level, 8);
2262
2263BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup,
2264 fs_root, 64);
2265BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup,
2266 fs_root_gen, 64);
2267BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup,
2268 fs_root_level, 8);
2269
2270BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup,
2271 dev_root, 64);
2272BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup,
2273 dev_root_gen, 64);
2274BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup,
2275 dev_root_level, 8);
2276
2277BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup,
2278 csum_root, 64);
2279BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup,
2280 csum_root_gen, 64);
2281BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup,
2282 csum_root_level, 8);
2283BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup,
2284 total_bytes, 64);
2285BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup,
2286 bytes_used, 64);
2287BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup,
2288 num_devices, 64);
2289
2290
2291BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64);
2292
2293static inline void btrfs_balance_data(const struct extent_buffer *eb,
2294 const struct btrfs_balance_item *bi,
2295 struct btrfs_disk_balance_args *ba)
2296{
2297 read_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
2298}
2299
2300static inline void btrfs_set_balance_data(struct extent_buffer *eb,
2301 struct btrfs_balance_item *bi,
2302 const struct btrfs_disk_balance_args *ba)
2303{
2304 write_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
2305}
2306
2307static inline void btrfs_balance_meta(const struct extent_buffer *eb,
2308 const struct btrfs_balance_item *bi,
2309 struct btrfs_disk_balance_args *ba)
2310{
2311 read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
2312}
2313
2314static inline void btrfs_set_balance_meta(struct extent_buffer *eb,
2315 struct btrfs_balance_item *bi,
2316 const struct btrfs_disk_balance_args *ba)
2317{
2318 write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
2319}
2320
2321static inline void btrfs_balance_sys(const struct extent_buffer *eb,
2322 const struct btrfs_balance_item *bi,
2323 struct btrfs_disk_balance_args *ba)
2324{
2325 read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
2326}
2327
2328static inline void btrfs_set_balance_sys(struct extent_buffer *eb,
2329 struct btrfs_balance_item *bi,
2330 const struct btrfs_disk_balance_args *ba)
2331{
2332 write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
2333}
2334
2335static inline void
2336btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu,
2337 const struct btrfs_disk_balance_args *disk)
2338{
2339 memset(cpu, 0, sizeof(*cpu));
2340
2341 cpu->profiles = le64_to_cpu(disk->profiles);
2342 cpu->usage = le64_to_cpu(disk->usage);
2343 cpu->devid = le64_to_cpu(disk->devid);
2344 cpu->pstart = le64_to_cpu(disk->pstart);
2345 cpu->pend = le64_to_cpu(disk->pend);
2346 cpu->vstart = le64_to_cpu(disk->vstart);
2347 cpu->vend = le64_to_cpu(disk->vend);
2348 cpu->target = le64_to_cpu(disk->target);
2349 cpu->flags = le64_to_cpu(disk->flags);
2350 cpu->limit = le64_to_cpu(disk->limit);
2351 cpu->stripes_min = le32_to_cpu(disk->stripes_min);
2352 cpu->stripes_max = le32_to_cpu(disk->stripes_max);
2353}
2354
2355static inline void
2356btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk,
2357 const struct btrfs_balance_args *cpu)
2358{
2359 memset(disk, 0, sizeof(*disk));
2360
2361 disk->profiles = cpu_to_le64(cpu->profiles);
2362 disk->usage = cpu_to_le64(cpu->usage);
2363 disk->devid = cpu_to_le64(cpu->devid);
2364 disk->pstart = cpu_to_le64(cpu->pstart);
2365 disk->pend = cpu_to_le64(cpu->pend);
2366 disk->vstart = cpu_to_le64(cpu->vstart);
2367 disk->vend = cpu_to_le64(cpu->vend);
2368 disk->target = cpu_to_le64(cpu->target);
2369 disk->flags = cpu_to_le64(cpu->flags);
2370 disk->limit = cpu_to_le64(cpu->limit);
2371 disk->stripes_min = cpu_to_le32(cpu->stripes_min);
2372 disk->stripes_max = cpu_to_le32(cpu->stripes_max);
2373}
2374
2375
2376BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64);
2377BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64);
2378BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block,
2379 generation, 64);
2380BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64);
2381BTRFS_SETGET_STACK_FUNCS(super_sys_array_size,
2382 struct btrfs_super_block, sys_chunk_array_size, 32);
2383BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation,
2384 struct btrfs_super_block, chunk_root_generation, 64);
2385BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block,
2386 root_level, 8);
2387BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block,
2388 chunk_root, 64);
2389BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block,
2390 chunk_root_level, 8);
2391BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block,
2392 log_root, 64);
2393BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block,
2394 log_root_transid, 64);
2395BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block,
2396 log_root_level, 8);
2397BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block,
2398 total_bytes, 64);
2399BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block,
2400 bytes_used, 64);
2401BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block,
2402 sectorsize, 32);
2403BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block,
2404 nodesize, 32);
2405BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block,
2406 stripesize, 32);
2407BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block,
2408 root_dir_objectid, 64);
2409BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block,
2410 num_devices, 64);
2411BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block,
2412 compat_flags, 64);
2413BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block,
2414 compat_ro_flags, 64);
2415BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block,
2416 incompat_flags, 64);
2417BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block,
2418 csum_type, 16);
2419BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block,
2420 cache_generation, 64);
2421BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64);
2422BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block,
2423 uuid_tree_generation, 64);
2424
2425int btrfs_super_csum_size(const struct btrfs_super_block *s);
2426const char *btrfs_super_csum_name(u16 csum_type);
2427const char *btrfs_super_csum_driver(u16 csum_type);
2428size_t __attribute_const__ btrfs_get_num_csums(void);
2429
2430
2431
2432
2433
2434
2435
2436static inline unsigned int leaf_data_end(const struct extent_buffer *leaf)
2437{
2438 u32 nr = btrfs_header_nritems(leaf);
2439
2440 if (nr == 0)
2441 return BTRFS_LEAF_DATA_SIZE(leaf->fs_info);
2442 return btrfs_item_offset_nr(leaf, nr - 1);
2443}
2444
2445
2446BTRFS_SETGET_STACK_FUNCS(stack_file_extent_type, struct btrfs_file_extent_item,
2447 type, 8);
2448BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr,
2449 struct btrfs_file_extent_item, disk_bytenr, 64);
2450BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset,
2451 struct btrfs_file_extent_item, offset, 64);
2452BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation,
2453 struct btrfs_file_extent_item, generation, 64);
2454BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes,
2455 struct btrfs_file_extent_item, num_bytes, 64);
2456BTRFS_SETGET_STACK_FUNCS(stack_file_extent_ram_bytes,
2457 struct btrfs_file_extent_item, ram_bytes, 64);
2458BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes,
2459 struct btrfs_file_extent_item, disk_num_bytes, 64);
2460BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression,
2461 struct btrfs_file_extent_item, compression, 8);
2462
2463static inline unsigned long
2464btrfs_file_extent_inline_start(const struct btrfs_file_extent_item *e)
2465{
2466 return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START;
2467}
2468
2469static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)
2470{
2471 return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize;
2472}
2473
2474BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8);
2475BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item,
2476 disk_bytenr, 64);
2477BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item,
2478 generation, 64);
2479BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item,
2480 disk_num_bytes, 64);
2481BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item,
2482 offset, 64);
2483BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item,
2484 num_bytes, 64);
2485BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item,
2486 ram_bytes, 64);
2487BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item,
2488 compression, 8);
2489BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item,
2490 encryption, 8);
2491BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item,
2492 other_encoding, 16);
2493
2494
2495
2496
2497
2498
2499static inline u32 btrfs_file_extent_inline_item_len(
2500 const struct extent_buffer *eb,
2501 struct btrfs_item *e)
2502{
2503 return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
2504}
2505
2506
2507BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item,
2508 generation, 64);
2509BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item,
2510 version, 64);
2511BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item,
2512 flags, 64);
2513BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item,
2514 rescan, 64);
2515
2516
2517BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item,
2518 generation, 64);
2519BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64);
2520BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item,
2521 rfer_cmpr, 64);
2522BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64);
2523BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item,
2524 excl_cmpr, 64);
2525
2526BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation,
2527 struct btrfs_qgroup_info_item, generation, 64);
2528BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item,
2529 rfer, 64);
2530BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr,
2531 struct btrfs_qgroup_info_item, rfer_cmpr, 64);
2532BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item,
2533 excl, 64);
2534BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr,
2535 struct btrfs_qgroup_info_item, excl_cmpr, 64);
2536
2537
2538BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item,
2539 flags, 64);
2540BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item,
2541 max_rfer, 64);
2542BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item,
2543 max_excl, 64);
2544BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item,
2545 rsv_rfer, 64);
2546BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item,
2547 rsv_excl, 64);
2548
2549
2550BTRFS_SETGET_FUNCS(dev_replace_src_devid,
2551 struct btrfs_dev_replace_item, src_devid, 64);
2552BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode,
2553 struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode,
2554 64);
2555BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item,
2556 replace_state, 64);
2557BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item,
2558 time_started, 64);
2559BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item,
2560 time_stopped, 64);
2561BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item,
2562 num_write_errors, 64);
2563BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors,
2564 struct btrfs_dev_replace_item, num_uncorrectable_read_errors,
2565 64);
2566BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item,
2567 cursor_left, 64);
2568BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item,
2569 cursor_right, 64);
2570
2571BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid,
2572 struct btrfs_dev_replace_item, src_devid, 64);
2573BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode,
2574 struct btrfs_dev_replace_item,
2575 cont_reading_from_srcdev_mode, 64);
2576BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state,
2577 struct btrfs_dev_replace_item, replace_state, 64);
2578BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started,
2579 struct btrfs_dev_replace_item, time_started, 64);
2580BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped,
2581 struct btrfs_dev_replace_item, time_stopped, 64);
2582BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors,
2583 struct btrfs_dev_replace_item, num_write_errors, 64);
2584BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors,
2585 struct btrfs_dev_replace_item,
2586 num_uncorrectable_read_errors, 64);
2587BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left,
2588 struct btrfs_dev_replace_item, cursor_left, 64);
2589BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right,
2590 struct btrfs_dev_replace_item, cursor_right, 64);
2591
2592
2593#define btrfs_item_ptr(leaf, slot, type) \
2594 ((type *)(BTRFS_LEAF_DATA_OFFSET + \
2595 btrfs_item_offset_nr(leaf, slot)))
2596
2597#define btrfs_item_ptr_offset(leaf, slot) \
2598 ((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \
2599 btrfs_item_offset_nr(leaf, slot)))
2600
2601static inline u32 btrfs_crc32c(u32 crc, const void *address, unsigned length)
2602{
2603 return crc32c(crc, address, length);
2604}
2605
2606static inline void btrfs_crc32c_final(u32 crc, u8 *result)
2607{
2608 put_unaligned_le32(~crc, result);
2609}
2610
2611static inline u64 btrfs_name_hash(const char *name, int len)
2612{
2613 return crc32c((u32)~1, name, len);
2614}
2615
2616
2617
2618
2619static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name,
2620 int len)
2621{
2622 return (u64) crc32c(parent_objectid, name, len);
2623}
2624
2625static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping)
2626{
2627 return mapping_gfp_constraint(mapping, ~__GFP_FS);
2628}
2629
2630
2631
2632enum btrfs_inline_ref_type {
2633 BTRFS_REF_TYPE_INVALID,
2634 BTRFS_REF_TYPE_BLOCK,
2635 BTRFS_REF_TYPE_DATA,
2636 BTRFS_REF_TYPE_ANY,
2637};
2638
2639int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb,
2640 struct btrfs_extent_inline_ref *iref,
2641 enum btrfs_inline_ref_type is_data);
2642u64 hash_extent_data_ref(u64 root_objectid, u64 owner, u64 offset);
2643
2644
2645
2646
2647
2648static inline u64 btrfs_csum_bytes_to_leaves(
2649 const struct btrfs_fs_info *fs_info, u64 csum_bytes)
2650{
2651 const u64 num_csums = csum_bytes >> fs_info->sectorsize_bits;
2652
2653 return DIV_ROUND_UP_ULL(num_csums, fs_info->csums_per_leaf);
2654}
2655
2656
2657
2658
2659
2660static inline u64 btrfs_calc_insert_metadata_size(struct btrfs_fs_info *fs_info,
2661 unsigned num_items)
2662{
2663 return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * 2 * num_items;
2664}
2665
2666
2667
2668
2669
2670static inline u64 btrfs_calc_metadata_size(struct btrfs_fs_info *fs_info,
2671 unsigned num_items)
2672{
2673 return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items;
2674}
2675
2676int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info,
2677 u64 start, u64 num_bytes);
2678void btrfs_free_excluded_extents(struct btrfs_block_group *cache);
2679int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
2680 unsigned long count);
2681void btrfs_cleanup_ref_head_accounting(struct btrfs_fs_info *fs_info,
2682 struct btrfs_delayed_ref_root *delayed_refs,
2683 struct btrfs_delayed_ref_head *head);
2684int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len);
2685int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans,
2686 struct btrfs_fs_info *fs_info, u64 bytenr,
2687 u64 offset, int metadata, u64 *refs, u64 *flags);
2688int btrfs_pin_extent(struct btrfs_trans_handle *trans, u64 bytenr, u64 num,
2689 int reserved);
2690int btrfs_pin_extent_for_log_replay(struct btrfs_trans_handle *trans,
2691 u64 bytenr, u64 num_bytes);
2692int btrfs_exclude_logged_extents(struct extent_buffer *eb);
2693int btrfs_cross_ref_exist(struct btrfs_root *root,
2694 u64 objectid, u64 offset, u64 bytenr, bool strict);
2695struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
2696 struct btrfs_root *root,
2697 u64 parent, u64 root_objectid,
2698 const struct btrfs_disk_key *key,
2699 int level, u64 hint,
2700 u64 empty_size,
2701 enum btrfs_lock_nesting nest);
2702void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
2703 struct btrfs_root *root,
2704 struct extent_buffer *buf,
2705 u64 parent, int last_ref);
2706int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
2707 struct btrfs_root *root, u64 owner,
2708 u64 offset, u64 ram_bytes,
2709 struct btrfs_key *ins);
2710int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
2711 u64 root_objectid, u64 owner, u64 offset,
2712 struct btrfs_key *ins);
2713int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes,
2714 u64 min_alloc_size, u64 empty_size, u64 hint_byte,
2715 struct btrfs_key *ins, int is_data, int delalloc);
2716int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2717 struct extent_buffer *buf, int full_backref);
2718int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2719 struct extent_buffer *buf, int full_backref);
2720int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans,
2721 struct extent_buffer *eb, u64 flags,
2722 int level, int is_data);
2723int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_ref *ref);
2724
2725int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info,
2726 u64 start, u64 len, int delalloc);
2727int btrfs_pin_reserved_extent(struct btrfs_trans_handle *trans, u64 start,
2728 u64 len);
2729int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans);
2730int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
2731 struct btrfs_ref *generic_ref);
2732
2733void btrfs_clear_space_info_full(struct btrfs_fs_info *info);
2734
2735
2736
2737
2738
2739
2740enum btrfs_reserve_flush_enum {
2741
2742 BTRFS_RESERVE_NO_FLUSH,
2743
2744
2745
2746
2747
2748
2749 BTRFS_RESERVE_FLUSH_LIMIT,
2750
2751
2752
2753
2754
2755
2756
2757
2758 BTRFS_RESERVE_FLUSH_EVICT,
2759
2760
2761
2762
2763
2764
2765
2766
2767 BTRFS_RESERVE_FLUSH_DATA,
2768 BTRFS_RESERVE_FLUSH_FREE_SPACE_INODE,
2769 BTRFS_RESERVE_FLUSH_ALL,
2770
2771
2772
2773
2774
2775
2776
2777 BTRFS_RESERVE_FLUSH_ALL_STEAL,
2778};
2779
2780enum btrfs_flush_state {
2781 FLUSH_DELAYED_ITEMS_NR = 1,
2782 FLUSH_DELAYED_ITEMS = 2,
2783 FLUSH_DELAYED_REFS_NR = 3,
2784 FLUSH_DELAYED_REFS = 4,
2785 FLUSH_DELALLOC = 5,
2786 FLUSH_DELALLOC_WAIT = 6,
2787 FLUSH_DELALLOC_FULL = 7,
2788 ALLOC_CHUNK = 8,
2789 ALLOC_CHUNK_FORCE = 9,
2790 RUN_DELAYED_IPUTS = 10,
2791 COMMIT_TRANS = 11,
2792};
2793
2794int btrfs_subvolume_reserve_metadata(struct btrfs_root *root,
2795 struct btrfs_block_rsv *rsv,
2796 int nitems, bool use_global_rsv);
2797void btrfs_subvolume_release_metadata(struct btrfs_root *root,
2798 struct btrfs_block_rsv *rsv);
2799void btrfs_delalloc_release_extents(struct btrfs_inode *inode, u64 num_bytes);
2800
2801int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes);
2802u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo);
2803int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info,
2804 u64 start, u64 end);
2805int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr,
2806 u64 num_bytes, u64 *actual_bytes);
2807int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range);
2808
2809int btrfs_init_space_info(struct btrfs_fs_info *fs_info);
2810int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans,
2811 struct btrfs_fs_info *fs_info);
2812int btrfs_start_write_no_snapshotting(struct btrfs_root *root);
2813void btrfs_end_write_no_snapshotting(struct btrfs_root *root);
2814void btrfs_wait_for_snapshot_creation(struct btrfs_root *root);
2815
2816
2817int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key,
2818 int *slot);
2819int __pure btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2);
2820int btrfs_previous_item(struct btrfs_root *root,
2821 struct btrfs_path *path, u64 min_objectid,
2822 int type);
2823int btrfs_previous_extent_item(struct btrfs_root *root,
2824 struct btrfs_path *path, u64 min_objectid);
2825void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info,
2826 struct btrfs_path *path,
2827 const struct btrfs_key *new_key);
2828struct extent_buffer *btrfs_root_node(struct btrfs_root *root);
2829int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path,
2830 struct btrfs_key *key, int lowest_level,
2831 u64 min_trans);
2832int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key,
2833 struct btrfs_path *path,
2834 u64 min_trans);
2835struct extent_buffer *btrfs_read_node_slot(struct extent_buffer *parent,
2836 int slot);
2837
2838int btrfs_cow_block(struct btrfs_trans_handle *trans,
2839 struct btrfs_root *root, struct extent_buffer *buf,
2840 struct extent_buffer *parent, int parent_slot,
2841 struct extent_buffer **cow_ret,
2842 enum btrfs_lock_nesting nest);
2843int btrfs_copy_root(struct btrfs_trans_handle *trans,
2844 struct btrfs_root *root,
2845 struct extent_buffer *buf,
2846 struct extent_buffer **cow_ret, u64 new_root_objectid);
2847int btrfs_block_can_be_shared(struct btrfs_root *root,
2848 struct extent_buffer *buf);
2849void btrfs_extend_item(struct btrfs_path *path, u32 data_size);
2850void btrfs_truncate_item(struct btrfs_path *path, u32 new_size, int from_end);
2851int btrfs_split_item(struct btrfs_trans_handle *trans,
2852 struct btrfs_root *root,
2853 struct btrfs_path *path,
2854 const struct btrfs_key *new_key,
2855 unsigned long split_offset);
2856int btrfs_duplicate_item(struct btrfs_trans_handle *trans,
2857 struct btrfs_root *root,
2858 struct btrfs_path *path,
2859 const struct btrfs_key *new_key);
2860int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path,
2861 u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key);
2862int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2863 const struct btrfs_key *key, struct btrfs_path *p,
2864 int ins_len, int cow);
2865int btrfs_search_old_slot(struct btrfs_root *root, const struct btrfs_key *key,
2866 struct btrfs_path *p, u64 time_seq);
2867int btrfs_search_slot_for_read(struct btrfs_root *root,
2868 const struct btrfs_key *key,
2869 struct btrfs_path *p, int find_higher,
2870 int return_any);
2871int btrfs_realloc_node(struct btrfs_trans_handle *trans,
2872 struct btrfs_root *root, struct extent_buffer *parent,
2873 int start_slot, u64 *last_ret,
2874 struct btrfs_key *progress);
2875void btrfs_release_path(struct btrfs_path *p);
2876struct btrfs_path *btrfs_alloc_path(void);
2877void btrfs_free_path(struct btrfs_path *p);
2878
2879int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2880 struct btrfs_path *path, int slot, int nr);
2881static inline int btrfs_del_item(struct btrfs_trans_handle *trans,
2882 struct btrfs_root *root,
2883 struct btrfs_path *path)
2884{
2885 return btrfs_del_items(trans, root, path, path->slots[0], 1);
2886}
2887
2888void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path,
2889 const struct btrfs_key *cpu_key, u32 *data_size,
2890 int nr);
2891int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2892 const struct btrfs_key *key, void *data, u32 data_size);
2893int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
2894 struct btrfs_root *root,
2895 struct btrfs_path *path,
2896 const struct btrfs_key *cpu_key, u32 *data_size,
2897 int nr);
2898
2899static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans,
2900 struct btrfs_root *root,
2901 struct btrfs_path *path,
2902 const struct btrfs_key *key,
2903 u32 data_size)
2904{
2905 return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1);
2906}
2907
2908int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path);
2909int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path,
2910 u64 time_seq);
2911
2912int btrfs_search_backwards(struct btrfs_root *root, struct btrfs_key *key,
2913 struct btrfs_path *path);
2914
2915static inline int btrfs_next_old_item(struct btrfs_root *root,
2916 struct btrfs_path *p, u64 time_seq)
2917{
2918 ++p->slots[0];
2919 if (p->slots[0] >= btrfs_header_nritems(p->nodes[0]))
2920 return btrfs_next_old_leaf(root, p, time_seq);
2921 return 0;
2922}
2923
2924
2925
2926
2927
2928
2929
2930static inline int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path)
2931{
2932 return btrfs_next_old_leaf(root, path, 0);
2933}
2934
2935static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p)
2936{
2937 return btrfs_next_old_item(root, p, 0);
2938}
2939int btrfs_leaf_free_space(struct extent_buffer *leaf);
2940int __must_check btrfs_drop_snapshot(struct btrfs_root *root, int update_ref,
2941 int for_reloc);
2942int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
2943 struct btrfs_root *root,
2944 struct extent_buffer *node,
2945 struct extent_buffer *parent);
2946static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info)
2947{
2948
2949
2950
2951 if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) {
2952 if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags))
2953 return 2;
2954 return 1;
2955 }
2956 return 0;
2957}
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967static inline int btrfs_need_cleaner_sleep(struct btrfs_fs_info *fs_info)
2968{
2969 return test_bit(BTRFS_FS_STATE_RO, &fs_info->fs_state) ||
2970 btrfs_fs_closing(fs_info);
2971}
2972
2973static inline void btrfs_set_sb_rdonly(struct super_block *sb)
2974{
2975 sb->s_flags |= SB_RDONLY;
2976 set_bit(BTRFS_FS_STATE_RO, &btrfs_sb(sb)->fs_state);
2977}
2978
2979static inline void btrfs_clear_sb_rdonly(struct super_block *sb)
2980{
2981 sb->s_flags &= ~SB_RDONLY;
2982 clear_bit(BTRFS_FS_STATE_RO, &btrfs_sb(sb)->fs_state);
2983}
2984
2985
2986int btrfs_add_root_ref(struct btrfs_trans_handle *trans, u64 root_id,
2987 u64 ref_id, u64 dirid, u64 sequence, const char *name,
2988 int name_len);
2989int btrfs_del_root_ref(struct btrfs_trans_handle *trans, u64 root_id,
2990 u64 ref_id, u64 dirid, u64 *sequence, const char *name,
2991 int name_len);
2992int btrfs_del_root(struct btrfs_trans_handle *trans,
2993 const struct btrfs_key *key);
2994int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2995 const struct btrfs_key *key,
2996 struct btrfs_root_item *item);
2997int __must_check btrfs_update_root(struct btrfs_trans_handle *trans,
2998 struct btrfs_root *root,
2999 struct btrfs_key *key,
3000 struct btrfs_root_item *item);
3001int btrfs_find_root(struct btrfs_root *root, const struct btrfs_key *search_key,
3002 struct btrfs_path *path, struct btrfs_root_item *root_item,
3003 struct btrfs_key *root_key);
3004int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info);
3005void btrfs_set_root_node(struct btrfs_root_item *item,
3006 struct extent_buffer *node);
3007void btrfs_check_and_init_root_item(struct btrfs_root_item *item);
3008void btrfs_update_root_times(struct btrfs_trans_handle *trans,
3009 struct btrfs_root *root);
3010
3011
3012int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, u8 *uuid, u8 type,
3013 u64 subid);
3014int btrfs_uuid_tree_remove(struct btrfs_trans_handle *trans, u8 *uuid, u8 type,
3015 u64 subid);
3016int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info);
3017
3018
3019int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir,
3020 const char *name, int name_len);
3021int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, const char *name,
3022 int name_len, struct btrfs_inode *dir,
3023 struct btrfs_key *location, u8 type, u64 index);
3024struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
3025 struct btrfs_root *root,
3026 struct btrfs_path *path, u64 dir,
3027 const char *name, int name_len,
3028 int mod);
3029struct btrfs_dir_item *
3030btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans,
3031 struct btrfs_root *root,
3032 struct btrfs_path *path, u64 dir,
3033 u64 index, const char *name, int name_len,
3034 int mod);
3035struct btrfs_dir_item *
3036btrfs_search_dir_index_item(struct btrfs_root *root,
3037 struct btrfs_path *path, u64 dirid,
3038 const char *name, int name_len);
3039int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
3040 struct btrfs_root *root,
3041 struct btrfs_path *path,
3042 struct btrfs_dir_item *di);
3043int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
3044 struct btrfs_root *root,
3045 struct btrfs_path *path, u64 objectid,
3046 const char *name, u16 name_len,
3047 const void *data, u16 data_len);
3048struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
3049 struct btrfs_root *root,
3050 struct btrfs_path *path, u64 dir,
3051 const char *name, u16 name_len,
3052 int mod);
3053struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info,
3054 struct btrfs_path *path,
3055 const char *name,
3056 int name_len);
3057
3058
3059int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
3060 struct btrfs_root *root, u64 offset);
3061int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
3062 struct btrfs_root *root, u64 offset);
3063int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset);
3064
3065
3066int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
3067 struct btrfs_root *root,
3068 const char *name, int name_len,
3069 u64 inode_objectid, u64 ref_objectid, u64 index);
3070int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
3071 struct btrfs_root *root,
3072 const char *name, int name_len,
3073 u64 inode_objectid, u64 ref_objectid, u64 *index);
3074int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
3075 struct btrfs_root *root,
3076 struct btrfs_path *path, u64 objectid);
3077int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
3078 *root, struct btrfs_path *path,
3079 struct btrfs_key *location, int mod);
3080
3081struct btrfs_inode_extref *
3082btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans,
3083 struct btrfs_root *root,
3084 struct btrfs_path *path,
3085 const char *name, int name_len,
3086 u64 inode_objectid, u64 ref_objectid, int ins_len,
3087 int cow);
3088
3089struct btrfs_inode_ref *btrfs_find_name_in_backref(struct extent_buffer *leaf,
3090 int slot, const char *name,
3091 int name_len);
3092struct btrfs_inode_extref *btrfs_find_name_in_ext_backref(
3093 struct extent_buffer *leaf, int slot, u64 ref_objectid,
3094 const char *name, int name_len);
3095
3096struct btrfs_dio_private;
3097int btrfs_del_csums(struct btrfs_trans_handle *trans,
3098 struct btrfs_root *root, u64 bytenr, u64 len);
3099blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u8 *dst);
3100int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
3101 struct btrfs_root *root,
3102 u64 objectid, u64 pos,
3103 u64 disk_offset, u64 disk_num_bytes,
3104 u64 num_bytes, u64 offset, u64 ram_bytes,
3105 u8 compression, u8 encryption, u16 other_encoding);
3106int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
3107 struct btrfs_root *root,
3108 struct btrfs_path *path, u64 objectid,
3109 u64 bytenr, int mod);
3110int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
3111 struct btrfs_root *root,
3112 struct btrfs_ordered_sum *sums);
3113blk_status_t btrfs_csum_one_bio(struct btrfs_inode *inode, struct bio *bio,
3114 u64 file_start, int contig);
3115int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
3116 struct list_head *list, int search_commit);
3117void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode,
3118 const struct btrfs_path *path,
3119 struct btrfs_file_extent_item *fi,
3120 const bool new_inline,
3121 struct extent_map *em);
3122int btrfs_inode_clear_file_extent_range(struct btrfs_inode *inode, u64 start,
3123 u64 len);
3124int btrfs_inode_set_file_extent_range(struct btrfs_inode *inode, u64 start,
3125 u64 len);
3126void btrfs_inode_safe_disk_i_size_write(struct btrfs_inode *inode, u64 new_i_size);
3127u64 btrfs_file_extent_end(const struct btrfs_path *path);
3128
3129
3130blk_status_t btrfs_submit_data_bio(struct inode *inode, struct bio *bio,
3131 int mirror_num, unsigned long bio_flags);
3132unsigned int btrfs_verify_data_csum(struct btrfs_io_bio *io_bio, u32 bio_offset,
3133 struct page *page, u64 start, u64 end);
3134struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode,
3135 u64 start, u64 len);
3136noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
3137 u64 *orig_start, u64 *orig_block_len,
3138 u64 *ram_bytes, bool strict);
3139
3140void __btrfs_del_delalloc_inode(struct btrfs_root *root,
3141 struct btrfs_inode *inode);
3142struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry);
3143int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index);
3144int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
3145 struct btrfs_root *root,
3146 struct btrfs_inode *dir, struct btrfs_inode *inode,
3147 const char *name, int name_len);
3148int btrfs_add_link(struct btrfs_trans_handle *trans,
3149 struct btrfs_inode *parent_inode, struct btrfs_inode *inode,
3150 const char *name, int name_len, int add_backref, u64 index);
3151int btrfs_delete_subvolume(struct inode *dir, struct dentry *dentry);
3152int btrfs_truncate_block(struct btrfs_inode *inode, loff_t from, loff_t len,
3153 int front);
3154int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
3155 struct btrfs_root *root,
3156 struct btrfs_inode *inode, u64 new_size,
3157 u32 min_type, u64 *extents_found);
3158
3159int btrfs_start_delalloc_snapshot(struct btrfs_root *root, bool in_reclaim_context);
3160int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, long nr,
3161 bool in_reclaim_context);
3162int btrfs_set_extent_delalloc(struct btrfs_inode *inode, u64 start, u64 end,
3163 unsigned int extra_bits,
3164 struct extent_state **cached_state);
3165int btrfs_create_subvol_root(struct btrfs_trans_handle *trans,
3166 struct btrfs_root *new_root,
3167 struct btrfs_root *parent_root,
3168 struct user_namespace *mnt_userns);
3169 void btrfs_set_delalloc_extent(struct inode *inode, struct extent_state *state,
3170 unsigned *bits);
3171void btrfs_clear_delalloc_extent(struct inode *inode,
3172 struct extent_state *state, unsigned *bits);
3173void btrfs_merge_delalloc_extent(struct inode *inode, struct extent_state *new,
3174 struct extent_state *other);
3175void btrfs_split_delalloc_extent(struct inode *inode,
3176 struct extent_state *orig, u64 split);
3177int btrfs_bio_fits_in_stripe(struct page *page, size_t size, struct bio *bio,
3178 unsigned long bio_flags);
3179void btrfs_set_range_writeback(struct btrfs_inode *inode, u64 start, u64 end);
3180vm_fault_t btrfs_page_mkwrite(struct vm_fault *vmf);
3181int btrfs_readpage(struct file *file, struct page *page);
3182void btrfs_evict_inode(struct inode *inode);
3183int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc);
3184struct inode *btrfs_alloc_inode(struct super_block *sb);
3185void btrfs_destroy_inode(struct inode *inode);
3186void btrfs_free_inode(struct inode *inode);
3187int btrfs_drop_inode(struct inode *inode);
3188int __init btrfs_init_cachep(void);
3189void __cold btrfs_destroy_cachep(void);
3190struct inode *btrfs_iget_path(struct super_block *s, u64 ino,
3191 struct btrfs_root *root, struct btrfs_path *path);
3192struct inode *btrfs_iget(struct super_block *s, u64 ino, struct btrfs_root *root);
3193struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
3194 struct page *page, size_t pg_offset,
3195 u64 start, u64 end);
3196int btrfs_update_inode(struct btrfs_trans_handle *trans,
3197 struct btrfs_root *root, struct btrfs_inode *inode);
3198int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans,
3199 struct btrfs_root *root, struct btrfs_inode *inode);
3200int btrfs_orphan_add(struct btrfs_trans_handle *trans,
3201 struct btrfs_inode *inode);
3202int btrfs_orphan_cleanup(struct btrfs_root *root);
3203int btrfs_cont_expand(struct btrfs_inode *inode, loff_t oldsize, loff_t size);
3204void btrfs_add_delayed_iput(struct inode *inode);
3205void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info);
3206int btrfs_wait_on_delayed_iputs(struct btrfs_fs_info *fs_info);
3207int btrfs_prealloc_file_range(struct inode *inode, int mode,
3208 u64 start, u64 num_bytes, u64 min_size,
3209 loff_t actual_len, u64 *alloc_hint);
3210int btrfs_prealloc_file_range_trans(struct inode *inode,
3211 struct btrfs_trans_handle *trans, int mode,
3212 u64 start, u64 num_bytes, u64 min_size,
3213 loff_t actual_len, u64 *alloc_hint);
3214int btrfs_run_delalloc_range(struct btrfs_inode *inode, struct page *locked_page,
3215 u64 start, u64 end, int *page_started, unsigned long *nr_written,
3216 struct writeback_control *wbc);
3217int btrfs_writepage_cow_fixup(struct page *page);
3218void btrfs_writepage_endio_finish_ordered(struct btrfs_inode *inode,
3219 struct page *page, u64 start,
3220 u64 end, bool uptodate);
3221extern const struct dentry_operations btrfs_dentry_operations;
3222extern const struct iomap_ops btrfs_dio_iomap_ops;
3223extern const struct iomap_dio_ops btrfs_dio_ops;
3224
3225
3226#define BTRFS_ILOCK_SHARED (1U << 0)
3227#define BTRFS_ILOCK_TRY (1U << 1)
3228#define BTRFS_ILOCK_MMAP (1U << 2)
3229
3230int btrfs_inode_lock(struct inode *inode, unsigned int ilock_flags);
3231void btrfs_inode_unlock(struct inode *inode, unsigned int ilock_flags);
3232void btrfs_update_inode_bytes(struct btrfs_inode *inode,
3233 const u64 add_bytes,
3234 const u64 del_bytes);
3235
3236
3237long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
3238long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
3239int btrfs_fileattr_get(struct dentry *dentry, struct fileattr *fa);
3240int btrfs_fileattr_set(struct user_namespace *mnt_userns,
3241 struct dentry *dentry, struct fileattr *fa);
3242int btrfs_ioctl_get_supported_features(void __user *arg);
3243void btrfs_sync_inode_flags_to_i_flags(struct inode *inode);
3244int __pure btrfs_is_empty_uuid(u8 *uuid);
3245int btrfs_defrag_file(struct inode *inode, struct file *file,
3246 struct btrfs_ioctl_defrag_range_args *range,
3247 u64 newer_than, unsigned long max_pages);
3248void btrfs_get_block_group_info(struct list_head *groups_list,
3249 struct btrfs_ioctl_space_info *space);
3250void btrfs_update_ioctl_balance_args(struct btrfs_fs_info *fs_info,
3251 struct btrfs_ioctl_balance_args *bargs);
3252bool btrfs_exclop_start(struct btrfs_fs_info *fs_info,
3253 enum btrfs_exclusive_operation type);
3254bool btrfs_exclop_start_try_lock(struct btrfs_fs_info *fs_info,
3255 enum btrfs_exclusive_operation type);
3256void btrfs_exclop_start_unlock(struct btrfs_fs_info *fs_info);
3257void btrfs_exclop_finish(struct btrfs_fs_info *fs_info);
3258
3259
3260int __init btrfs_auto_defrag_init(void);
3261void __cold btrfs_auto_defrag_exit(void);
3262int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans,
3263 struct btrfs_inode *inode);
3264int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info);
3265void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info);
3266int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
3267void btrfs_drop_extent_cache(struct btrfs_inode *inode, u64 start, u64 end,
3268 int skip_pinned);
3269extern const struct file_operations btrfs_file_operations;
3270int btrfs_drop_extents(struct btrfs_trans_handle *trans,
3271 struct btrfs_root *root, struct btrfs_inode *inode,
3272 struct btrfs_drop_extents_args *args);
3273int btrfs_replace_file_extents(struct btrfs_inode *inode,
3274 struct btrfs_path *path, const u64 start,
3275 const u64 end,
3276 struct btrfs_replace_extent_info *extent_info,
3277 struct btrfs_trans_handle **trans_out);
3278int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
3279 struct btrfs_inode *inode, u64 start, u64 end);
3280int btrfs_release_file(struct inode *inode, struct file *file);
3281int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages,
3282 size_t num_pages, loff_t pos, size_t write_bytes,
3283 struct extent_state **cached, bool noreserve);
3284int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end);
3285int btrfs_check_nocow_lock(struct btrfs_inode *inode, loff_t pos,
3286 size_t *write_bytes);
3287void btrfs_check_nocow_unlock(struct btrfs_inode *inode);
3288
3289
3290int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
3291 struct btrfs_root *root);
3292
3293
3294int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
3295 unsigned long new_flags);
3296int btrfs_sync_fs(struct super_block *sb, int wait);
3297char *btrfs_get_subvol_name_from_objectid(struct btrfs_fs_info *fs_info,
3298 u64 subvol_objectid);
3299
3300static inline __printf(2, 3) __cold
3301void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...)
3302{
3303}
3304
3305#ifdef CONFIG_PRINTK
3306__printf(2, 3)
3307__cold
3308void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...);
3309#else
3310#define btrfs_printk(fs_info, fmt, args...) \
3311 btrfs_no_printk(fs_info, fmt, ##args)
3312#endif
3313
3314#define btrfs_emerg(fs_info, fmt, args...) \
3315 btrfs_printk(fs_info, KERN_EMERG fmt, ##args)
3316#define btrfs_alert(fs_info, fmt, args...) \
3317 btrfs_printk(fs_info, KERN_ALERT fmt, ##args)
3318#define btrfs_crit(fs_info, fmt, args...) \
3319 btrfs_printk(fs_info, KERN_CRIT fmt, ##args)
3320#define btrfs_err(fs_info, fmt, args...) \
3321 btrfs_printk(fs_info, KERN_ERR fmt, ##args)
3322#define btrfs_warn(fs_info, fmt, args...) \
3323 btrfs_printk(fs_info, KERN_WARNING fmt, ##args)
3324#define btrfs_notice(fs_info, fmt, args...) \
3325 btrfs_printk(fs_info, KERN_NOTICE fmt, ##args)
3326#define btrfs_info(fs_info, fmt, args...) \
3327 btrfs_printk(fs_info, KERN_INFO fmt, ##args)
3328
3329
3330
3331
3332#define btrfs_emerg_in_rcu(fs_info, fmt, args...) \
3333 btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args)
3334#define btrfs_alert_in_rcu(fs_info, fmt, args...) \
3335 btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args)
3336#define btrfs_crit_in_rcu(fs_info, fmt, args...) \
3337 btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args)
3338#define btrfs_err_in_rcu(fs_info, fmt, args...) \
3339 btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args)
3340#define btrfs_warn_in_rcu(fs_info, fmt, args...) \
3341 btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args)
3342#define btrfs_notice_in_rcu(fs_info, fmt, args...) \
3343 btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args)
3344#define btrfs_info_in_rcu(fs_info, fmt, args...) \
3345 btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args)
3346
3347
3348
3349
3350#define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \
3351 btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args)
3352#define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \
3353 btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args)
3354#define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \
3355 btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args)
3356#define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \
3357 btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args)
3358#define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \
3359 btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args)
3360#define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \
3361 btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args)
3362#define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \
3363 btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args)
3364
3365
3366
3367
3368#define btrfs_emerg_rl(fs_info, fmt, args...) \
3369 btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args)
3370#define btrfs_alert_rl(fs_info, fmt, args...) \
3371 btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args)
3372#define btrfs_crit_rl(fs_info, fmt, args...) \
3373 btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args)
3374#define btrfs_err_rl(fs_info, fmt, args...) \
3375 btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args)
3376#define btrfs_warn_rl(fs_info, fmt, args...) \
3377 btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args)
3378#define btrfs_notice_rl(fs_info, fmt, args...) \
3379 btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args)
3380#define btrfs_info_rl(fs_info, fmt, args...) \
3381 btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args)
3382
3383#if defined(CONFIG_DYNAMIC_DEBUG)
3384#define btrfs_debug(fs_info, fmt, args...) \
3385 _dynamic_func_call_no_desc(fmt, btrfs_printk, \
3386 fs_info, KERN_DEBUG fmt, ##args)
3387#define btrfs_debug_in_rcu(fs_info, fmt, args...) \
3388 _dynamic_func_call_no_desc(fmt, btrfs_printk_in_rcu, \
3389 fs_info, KERN_DEBUG fmt, ##args)
3390#define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \
3391 _dynamic_func_call_no_desc(fmt, btrfs_printk_rl_in_rcu, \
3392 fs_info, KERN_DEBUG fmt, ##args)
3393#define btrfs_debug_rl(fs_info, fmt, args...) \
3394 _dynamic_func_call_no_desc(fmt, btrfs_printk_ratelimited, \
3395 fs_info, KERN_DEBUG fmt, ##args)
3396#elif defined(DEBUG)
3397#define btrfs_debug(fs_info, fmt, args...) \
3398 btrfs_printk(fs_info, KERN_DEBUG fmt, ##args)
3399#define btrfs_debug_in_rcu(fs_info, fmt, args...) \
3400 btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
3401#define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \
3402 btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
3403#define btrfs_debug_rl(fs_info, fmt, args...) \
3404 btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args)
3405#else
3406#define btrfs_debug(fs_info, fmt, args...) \
3407 btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args)
3408#define btrfs_debug_in_rcu(fs_info, fmt, args...) \
3409 btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
3410#define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \
3411 btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
3412#define btrfs_debug_rl(fs_info, fmt, args...) \
3413 btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args)
3414#endif
3415
3416#define btrfs_printk_in_rcu(fs_info, fmt, args...) \
3417do { \
3418 rcu_read_lock(); \
3419 btrfs_printk(fs_info, fmt, ##args); \
3420 rcu_read_unlock(); \
3421} while (0)
3422
3423#define btrfs_no_printk_in_rcu(fs_info, fmt, args...) \
3424do { \
3425 rcu_read_lock(); \
3426 btrfs_no_printk(fs_info, fmt, ##args); \
3427 rcu_read_unlock(); \
3428} while (0)
3429
3430#define btrfs_printk_ratelimited(fs_info, fmt, args...) \
3431do { \
3432 static DEFINE_RATELIMIT_STATE(_rs, \
3433 DEFAULT_RATELIMIT_INTERVAL, \
3434 DEFAULT_RATELIMIT_BURST); \
3435 if (__ratelimit(&_rs)) \
3436 btrfs_printk(fs_info, fmt, ##args); \
3437} while (0)
3438
3439#define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \
3440do { \
3441 rcu_read_lock(); \
3442 btrfs_printk_ratelimited(fs_info, fmt, ##args); \
3443 rcu_read_unlock(); \
3444} while (0)
3445
3446#ifdef CONFIG_BTRFS_ASSERT
3447__cold __noreturn
3448static inline void assertfail(const char *expr, const char *file, int line)
3449{
3450 pr_err("assertion failed: %s, in %s:%d\n", expr, file, line);
3451 BUG();
3452}
3453
3454#define ASSERT(expr) \
3455 (likely(expr) ? (void)0 : assertfail(#expr, __FILE__, __LINE__))
3456
3457#else
3458static inline void assertfail(const char *expr, const char* file, int line) { }
3459#define ASSERT(expr) (void)(expr)
3460#endif
3461
3462#if BITS_PER_LONG == 32
3463#define BTRFS_32BIT_MAX_FILE_SIZE (((u64)ULONG_MAX + 1) << PAGE_SHIFT)
3464
3465
3466
3467
3468
3469
3470#define BTRFS_32BIT_EARLY_WARN_THRESHOLD (BTRFS_32BIT_MAX_FILE_SIZE * 5 / 8)
3471void btrfs_warn_32bit_limit(struct btrfs_fs_info *fs_info);
3472void btrfs_err_32bit_limit(struct btrfs_fs_info *fs_info);
3473#endif
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483static inline size_t get_eb_offset_in_page(const struct extent_buffer *eb,
3484 unsigned long offset)
3485{
3486
3487
3488
3489
3490
3491
3492
3493 return offset_in_page(offset + eb->start);
3494}
3495
3496static inline unsigned long get_eb_page_index(unsigned long offset)
3497{
3498
3499
3500
3501
3502
3503
3504
3505 return offset >> PAGE_SHIFT;
3506}
3507
3508
3509
3510
3511
3512#ifndef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
3513#define EXPORT_FOR_TESTS static
3514#else
3515#define EXPORT_FOR_TESTS
3516#endif
3517
3518__cold
3519static inline void btrfs_print_v0_err(struct btrfs_fs_info *fs_info)
3520{
3521 btrfs_err(fs_info,
3522"Unsupported V0 extent filesystem detected. Aborting. Please re-create your filesystem with a newer kernel");
3523}
3524
3525__printf(5, 6)
3526__cold
3527void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function,
3528 unsigned int line, int errno, const char *fmt, ...);
3529
3530const char * __attribute_const__ btrfs_decode_error(int errno);
3531
3532__cold
3533void __btrfs_abort_transaction(struct btrfs_trans_handle *trans,
3534 const char *function,
3535 unsigned int line, int errno);
3536
3537
3538
3539
3540
3541#define btrfs_abort_transaction(trans, errno) \
3542do { \
3543 \
3544 if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \
3545 &((trans)->fs_info->fs_state))) { \
3546 if ((errno) != -EIO && (errno) != -EROFS) { \
3547 WARN(1, KERN_DEBUG \
3548 "BTRFS: Transaction aborted (error %d)\n", \
3549 (errno)); \
3550 } else { \
3551 btrfs_debug((trans)->fs_info, \
3552 "Transaction aborted (error %d)", \
3553 (errno)); \
3554 } \
3555 } \
3556 __btrfs_abort_transaction((trans), __func__, \
3557 __LINE__, (errno)); \
3558} while (0)
3559
3560#define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \
3561do { \
3562 __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \
3563 (errno), fmt, ##args); \
3564} while (0)
3565
3566__printf(5, 6)
3567__cold
3568void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function,
3569 unsigned int line, int errno, const char *fmt, ...);
3570
3571
3572
3573
3574#define btrfs_panic(fs_info, errno, fmt, args...) \
3575do { \
3576 __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \
3577 BUG(); \
3578} while (0)
3579
3580
3581
3582
3583#define btrfs_set_fs_incompat(__fs_info, opt) \
3584 __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt, \
3585 #opt)
3586
3587static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info,
3588 u64 flag, const char* name)
3589{
3590 struct btrfs_super_block *disk_super;
3591 u64 features;
3592
3593 disk_super = fs_info->super_copy;
3594 features = btrfs_super_incompat_flags(disk_super);
3595 if (!(features & flag)) {
3596 spin_lock(&fs_info->super_lock);
3597 features = btrfs_super_incompat_flags(disk_super);
3598 if (!(features & flag)) {
3599 features |= flag;
3600 btrfs_set_super_incompat_flags(disk_super, features);
3601 btrfs_info(fs_info,
3602 "setting incompat feature flag for %s (0x%llx)",
3603 name, flag);
3604 }
3605 spin_unlock(&fs_info->super_lock);
3606 }
3607}
3608
3609#define btrfs_clear_fs_incompat(__fs_info, opt) \
3610 __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt, \
3611 #opt)
3612
3613static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info,
3614 u64 flag, const char* name)
3615{
3616 struct btrfs_super_block *disk_super;
3617 u64 features;
3618
3619 disk_super = fs_info->super_copy;
3620 features = btrfs_super_incompat_flags(disk_super);
3621 if (features & flag) {
3622 spin_lock(&fs_info->super_lock);
3623 features = btrfs_super_incompat_flags(disk_super);
3624 if (features & flag) {
3625 features &= ~flag;
3626 btrfs_set_super_incompat_flags(disk_super, features);
3627 btrfs_info(fs_info,
3628 "clearing incompat feature flag for %s (0x%llx)",
3629 name, flag);
3630 }
3631 spin_unlock(&fs_info->super_lock);
3632 }
3633}
3634
3635#define btrfs_fs_incompat(fs_info, opt) \
3636 __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt)
3637
3638static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag)
3639{
3640 struct btrfs_super_block *disk_super;
3641 disk_super = fs_info->super_copy;
3642 return !!(btrfs_super_incompat_flags(disk_super) & flag);
3643}
3644
3645#define btrfs_set_fs_compat_ro(__fs_info, opt) \
3646 __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt, \
3647 #opt)
3648
3649static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info,
3650 u64 flag, const char *name)
3651{
3652 struct btrfs_super_block *disk_super;
3653 u64 features;
3654
3655 disk_super = fs_info->super_copy;
3656 features = btrfs_super_compat_ro_flags(disk_super);
3657 if (!(features & flag)) {
3658 spin_lock(&fs_info->super_lock);
3659 features = btrfs_super_compat_ro_flags(disk_super);
3660 if (!(features & flag)) {
3661 features |= flag;
3662 btrfs_set_super_compat_ro_flags(disk_super, features);
3663 btrfs_info(fs_info,
3664 "setting compat-ro feature flag for %s (0x%llx)",
3665 name, flag);
3666 }
3667 spin_unlock(&fs_info->super_lock);
3668 }
3669}
3670
3671#define btrfs_clear_fs_compat_ro(__fs_info, opt) \
3672 __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt, \
3673 #opt)
3674
3675static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info,
3676 u64 flag, const char *name)
3677{
3678 struct btrfs_super_block *disk_super;
3679 u64 features;
3680
3681 disk_super = fs_info->super_copy;
3682 features = btrfs_super_compat_ro_flags(disk_super);
3683 if (features & flag) {
3684 spin_lock(&fs_info->super_lock);
3685 features = btrfs_super_compat_ro_flags(disk_super);
3686 if (features & flag) {
3687 features &= ~flag;
3688 btrfs_set_super_compat_ro_flags(disk_super, features);
3689 btrfs_info(fs_info,
3690 "clearing compat-ro feature flag for %s (0x%llx)",
3691 name, flag);
3692 }
3693 spin_unlock(&fs_info->super_lock);
3694 }
3695}
3696
3697#define btrfs_fs_compat_ro(fs_info, opt) \
3698 __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt)
3699
3700static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag)
3701{
3702 struct btrfs_super_block *disk_super;
3703 disk_super = fs_info->super_copy;
3704 return !!(btrfs_super_compat_ro_flags(disk_super) & flag);
3705}
3706
3707
3708#ifdef CONFIG_BTRFS_FS_POSIX_ACL
3709struct posix_acl *btrfs_get_acl(struct inode *inode, int type, bool rcu);
3710int btrfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode,
3711 struct posix_acl *acl, int type);
3712int btrfs_init_acl(struct btrfs_trans_handle *trans,
3713 struct inode *inode, struct inode *dir);
3714#else
3715#define btrfs_get_acl NULL
3716#define btrfs_set_acl NULL
3717static inline int btrfs_init_acl(struct btrfs_trans_handle *trans,
3718 struct inode *inode, struct inode *dir)
3719{
3720 return 0;
3721}
3722#endif
3723
3724
3725int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start);
3726int btrfs_init_reloc_root(struct btrfs_trans_handle *trans,
3727 struct btrfs_root *root);
3728int btrfs_update_reloc_root(struct btrfs_trans_handle *trans,
3729 struct btrfs_root *root);
3730int btrfs_recover_relocation(struct btrfs_root *root);
3731int btrfs_reloc_clone_csums(struct btrfs_inode *inode, u64 file_pos, u64 len);
3732int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans,
3733 struct btrfs_root *root, struct extent_buffer *buf,
3734 struct extent_buffer *cow);
3735void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending,
3736 u64 *bytes_to_reserve);
3737int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
3738 struct btrfs_pending_snapshot *pending);
3739int btrfs_should_cancel_balance(struct btrfs_fs_info *fs_info);
3740struct btrfs_root *find_reloc_root(struct btrfs_fs_info *fs_info,
3741 u64 bytenr);
3742int btrfs_should_ignore_reloc_root(struct btrfs_root *root);
3743
3744
3745int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start,
3746 u64 end, struct btrfs_scrub_progress *progress,
3747 int readonly, int is_dev_replace);
3748void btrfs_scrub_pause(struct btrfs_fs_info *fs_info);
3749void btrfs_scrub_continue(struct btrfs_fs_info *fs_info);
3750int btrfs_scrub_cancel(struct btrfs_fs_info *info);
3751int btrfs_scrub_cancel_dev(struct btrfs_device *dev);
3752int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid,
3753 struct btrfs_scrub_progress *progress);
3754static inline void btrfs_init_full_stripe_locks_tree(
3755 struct btrfs_full_stripe_locks_tree *locks_root)
3756{
3757 locks_root->root = RB_ROOT;
3758 mutex_init(&locks_root->lock);
3759}
3760
3761
3762void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info);
3763void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info);
3764void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount);
3765
3766static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info)
3767{
3768 btrfs_bio_counter_sub(fs_info, 1);
3769}
3770
3771
3772struct reada_control {
3773 struct btrfs_fs_info *fs_info;
3774 struct btrfs_key key_start;
3775 struct btrfs_key key_end;
3776 atomic_t elems;
3777 struct kref refcnt;
3778 wait_queue_head_t wait;
3779};
3780struct reada_control *btrfs_reada_add(struct btrfs_root *root,
3781 struct btrfs_key *start, struct btrfs_key *end);
3782int btrfs_reada_wait(void *handle);
3783void btrfs_reada_detach(void *handle);
3784int btree_readahead_hook(struct extent_buffer *eb, int err);
3785void btrfs_reada_remove_dev(struct btrfs_device *dev);
3786void btrfs_reada_undo_remove_dev(struct btrfs_device *dev);
3787
3788static inline int is_fstree(u64 rootid)
3789{
3790 if (rootid == BTRFS_FS_TREE_OBJECTID ||
3791 ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID &&
3792 !btrfs_qgroup_level(rootid)))
3793 return 1;
3794 return 0;
3795}
3796
3797static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info)
3798{
3799 return signal_pending(current);
3800}
3801
3802
3803#ifdef CONFIG_FS_VERITY
3804
3805extern const struct fsverity_operations btrfs_verityops;
3806int btrfs_drop_verity_items(struct btrfs_inode *inode);
3807
3808BTRFS_SETGET_FUNCS(verity_descriptor_encryption, struct btrfs_verity_descriptor_item,
3809 encryption, 8);
3810BTRFS_SETGET_FUNCS(verity_descriptor_size, struct btrfs_verity_descriptor_item,
3811 size, 64);
3812BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_encryption,
3813 struct btrfs_verity_descriptor_item, encryption, 8);
3814BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_size,
3815 struct btrfs_verity_descriptor_item, size, 64);
3816
3817#else
3818
3819static inline int btrfs_drop_verity_items(struct btrfs_inode *inode)
3820{
3821 return 0;
3822}
3823
3824#endif
3825
3826
3827#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
3828void btrfs_test_destroy_inode(struct inode *inode);
3829static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info)
3830{
3831 return test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state);
3832}
3833#else
3834static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info)
3835{
3836 return 0;
3837}
3838#endif
3839
3840static inline bool btrfs_is_zoned(const struct btrfs_fs_info *fs_info)
3841{
3842 return fs_info->zoned != 0;
3843}
3844
3845
3846
3847
3848
3849
3850
3851#define PageOrdered(page) PagePrivate2(page)
3852#define SetPageOrdered(page) SetPagePrivate2(page)
3853#define ClearPageOrdered(page) ClearPagePrivate2(page)
3854
3855#endif
3856