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 <linux/kobject.h>
20#include <trace/events/btrfs.h>
21#include <asm/kmap_types.h>
22#include <asm/unaligned.h>
23#include <linux/pagemap.h>
24#include <linux/btrfs.h>
25#include <linux/btrfs_tree.h>
26#include <linux/workqueue.h>
27#include <linux/security.h>
28#include <linux/sizes.h>
29#include <linux/dynamic_debug.h>
30#include <linux/refcount.h>
31#include <linux/crc32c.h>
32#include "extent_io.h"
33#include "extent_map.h"
34#include "async-thread.h"
35#include "block-rsv.h"
36
37struct btrfs_trans_handle;
38struct btrfs_transaction;
39struct btrfs_pending_snapshot;
40struct btrfs_delayed_ref_root;
41struct btrfs_space_info;
42extern struct kmem_cache *btrfs_trans_handle_cachep;
43extern struct kmem_cache *btrfs_bit_radix_cachep;
44extern struct kmem_cache *btrfs_path_cachep;
45extern struct kmem_cache *btrfs_free_space_cachep;
46struct btrfs_ordered_sum;
47struct btrfs_ref;
48
49#define BTRFS_MAGIC 0x4D5F53665248425FULL
50
51
52
53
54
55
56
57
58
59
60#define BTRFS_MAX_MIRRORS (2 + 1)
61
62#define BTRFS_MAX_LEVEL 8
63
64#define BTRFS_OLDEST_GENERATION 0ULL
65
66
67
68
69
70#define BTRFS_MAX_METADATA_BLOCKSIZE 65536
71
72
73
74
75
76#define BTRFS_NAME_LEN 255
77
78
79
80
81
82
83#define BTRFS_LINK_MAX 65535U
84
85
86static const int btrfs_csum_sizes[] = { 4 };
87static const char *btrfs_csum_names[] = { "crc32c" };
88
89#define BTRFS_EMPTY_DIR_SIZE 0
90
91
92#define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0))
93
94#define BTRFS_DIRTY_METADATA_THRESH SZ_32M
95
96
97
98
99
100
101
102#define BTRFS_TOTAL_BYTES_PINNED_BATCH SZ_128M
103
104#define BTRFS_MAX_EXTENT_SIZE SZ_128M
105
106
107
108
109
110static inline u32 count_max_extents(u64 size)
111{
112 return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE);
113}
114
115static inline unsigned long btrfs_chunk_item_size(int num_stripes)
116{
117 BUG_ON(num_stripes == 0);
118 return sizeof(struct btrfs_chunk) +
119 sizeof(struct btrfs_stripe) * (num_stripes - 1);
120}
121
122
123
124
125enum {
126
127 BTRFS_FS_STATE_ERROR,
128
129
130
131
132 BTRFS_FS_STATE_REMOUNTING,
133
134 BTRFS_FS_STATE_TRANS_ABORTED,
135
136
137
138
139 BTRFS_FS_STATE_DEV_REPLACING,
140
141 BTRFS_FS_STATE_DUMMY_FS_INFO,
142};
143
144#define BTRFS_BACKREF_REV_MAX 256
145#define BTRFS_BACKREF_REV_SHIFT 56
146#define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \
147 BTRFS_BACKREF_REV_SHIFT)
148
149#define BTRFS_OLD_BACKREF_REV 0
150#define BTRFS_MIXED_BACKREF_REV 1
151
152
153
154
155struct btrfs_header {
156
157 u8 csum[BTRFS_CSUM_SIZE];
158 u8 fsid[BTRFS_FSID_SIZE];
159 __le64 bytenr;
160 __le64 flags;
161
162
163 u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
164 __le64 generation;
165 __le64 owner;
166 __le32 nritems;
167 u8 level;
168} __attribute__ ((__packed__));
169
170
171
172
173
174#define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048
175
176
177
178
179
180
181#define BTRFS_NUM_BACKUP_ROOTS 4
182struct btrfs_root_backup {
183 __le64 tree_root;
184 __le64 tree_root_gen;
185
186 __le64 chunk_root;
187 __le64 chunk_root_gen;
188
189 __le64 extent_root;
190 __le64 extent_root_gen;
191
192 __le64 fs_root;
193 __le64 fs_root_gen;
194
195 __le64 dev_root;
196 __le64 dev_root_gen;
197
198 __le64 csum_root;
199 __le64 csum_root_gen;
200
201 __le64 total_bytes;
202 __le64 bytes_used;
203 __le64 num_devices;
204
205 __le64 unused_64[4];
206
207 u8 tree_root_level;
208 u8 chunk_root_level;
209 u8 extent_root_level;
210 u8 fs_root_level;
211 u8 dev_root_level;
212 u8 csum_root_level;
213
214 u8 unused_8[10];
215} __attribute__ ((__packed__));
216
217
218
219
220
221struct btrfs_super_block {
222
223 u8 csum[BTRFS_CSUM_SIZE];
224
225 u8 fsid[BTRFS_FSID_SIZE];
226 __le64 bytenr;
227 __le64 flags;
228
229
230 __le64 magic;
231 __le64 generation;
232 __le64 root;
233 __le64 chunk_root;
234 __le64 log_root;
235
236
237 __le64 log_root_transid;
238 __le64 total_bytes;
239 __le64 bytes_used;
240 __le64 root_dir_objectid;
241 __le64 num_devices;
242 __le32 sectorsize;
243 __le32 nodesize;
244 __le32 __unused_leafsize;
245 __le32 stripesize;
246 __le32 sys_chunk_array_size;
247 __le64 chunk_root_generation;
248 __le64 compat_flags;
249 __le64 compat_ro_flags;
250 __le64 incompat_flags;
251 __le16 csum_type;
252 u8 root_level;
253 u8 chunk_root_level;
254 u8 log_root_level;
255 struct btrfs_dev_item dev_item;
256
257 char label[BTRFS_LABEL_SIZE];
258
259 __le64 cache_generation;
260 __le64 uuid_tree_generation;
261
262
263 u8 metadata_uuid[BTRFS_FSID_SIZE];
264
265
266 __le64 reserved[28];
267 u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE];
268 struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS];
269} __attribute__ ((__packed__));
270
271
272
273
274
275#define BTRFS_FEATURE_COMPAT_SUPP 0ULL
276#define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL
277#define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL
278
279#define BTRFS_FEATURE_COMPAT_RO_SUPP \
280 (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE | \
281 BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID)
282
283#define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL
284#define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL
285
286#define BTRFS_FEATURE_INCOMPAT_SUPP \
287 (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \
288 BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \
289 BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \
290 BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \
291 BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \
292 BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD | \
293 BTRFS_FEATURE_INCOMPAT_RAID56 | \
294 BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \
295 BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \
296 BTRFS_FEATURE_INCOMPAT_NO_HOLES | \
297 BTRFS_FEATURE_INCOMPAT_METADATA_UUID)
298
299#define BTRFS_FEATURE_INCOMPAT_SAFE_SET \
300 (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF)
301#define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL
302
303
304
305
306
307struct btrfs_item {
308 struct btrfs_disk_key key;
309 __le32 offset;
310 __le32 size;
311} __attribute__ ((__packed__));
312
313
314
315
316
317
318
319
320struct btrfs_leaf {
321 struct btrfs_header header;
322 struct btrfs_item items[];
323} __attribute__ ((__packed__));
324
325
326
327
328
329struct btrfs_key_ptr {
330 struct btrfs_disk_key key;
331 __le64 blockptr;
332 __le64 generation;
333} __attribute__ ((__packed__));
334
335struct btrfs_node {
336 struct btrfs_header header;
337 struct btrfs_key_ptr ptrs[];
338} __attribute__ ((__packed__));
339
340
341
342
343
344
345
346
347
348enum { READA_NONE, READA_BACK, READA_FORWARD };
349struct btrfs_path {
350 struct extent_buffer *nodes[BTRFS_MAX_LEVEL];
351 int slots[BTRFS_MAX_LEVEL];
352
353 u8 locks[BTRFS_MAX_LEVEL];
354 u8 reada;
355
356 u8 lowest_level;
357
358
359
360
361
362 unsigned int search_for_split:1;
363 unsigned int keep_locks:1;
364 unsigned int skip_locking:1;
365 unsigned int leave_spinning:1;
366 unsigned int search_commit_root:1;
367 unsigned int need_commit_sem:1;
368 unsigned int skip_release_on_error:1;
369};
370#define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \
371 sizeof(struct btrfs_item))
372struct btrfs_dev_replace {
373 u64 replace_state;
374 time64_t time_started;
375 time64_t time_stopped;
376 atomic64_t num_write_errors;
377 atomic64_t num_uncorrectable_read_errors;
378
379 u64 cursor_left;
380 u64 committed_cursor_left;
381 u64 cursor_left_last_write_of_item;
382 u64 cursor_right;
383
384 u64 cont_reading_from_srcdev_mode;
385
386 int is_valid;
387 int item_needs_writeback;
388 struct btrfs_device *srcdev;
389 struct btrfs_device *tgtdev;
390
391 struct mutex lock_finishing_cancel_unmount;
392 struct rw_semaphore rwsem;
393
394 struct btrfs_scrub_progress scrub_progress;
395
396 struct percpu_counter bio_counter;
397 wait_queue_head_t replace_wait;
398};
399
400
401struct raid_kobject {
402 u64 flags;
403 struct kobject kobj;
404};
405
406
407
408
409
410
411struct btrfs_free_cluster {
412 spinlock_t lock;
413 spinlock_t refill_lock;
414 struct rb_root root;
415
416
417 u64 max_size;
418
419
420 u64 window_start;
421
422
423 bool fragmented;
424
425 struct btrfs_block_group_cache *block_group;
426
427
428
429
430
431 struct list_head block_group_list;
432};
433
434enum btrfs_caching_type {
435 BTRFS_CACHE_NO,
436 BTRFS_CACHE_STARTED,
437 BTRFS_CACHE_FAST,
438 BTRFS_CACHE_FINISHED,
439 BTRFS_CACHE_ERROR,
440};
441
442enum btrfs_disk_cache_state {
443 BTRFS_DC_WRITTEN,
444 BTRFS_DC_ERROR,
445 BTRFS_DC_CLEAR,
446 BTRFS_DC_SETUP,
447};
448
449struct btrfs_caching_control {
450 struct list_head list;
451 struct mutex mutex;
452 wait_queue_head_t wait;
453 struct btrfs_work work;
454 struct btrfs_block_group_cache *block_group;
455 u64 progress;
456 refcount_t count;
457};
458
459
460#define CACHING_CTL_WAKE_UP SZ_2M
461
462struct btrfs_io_ctl {
463 void *cur, *orig;
464 struct page *page;
465 struct page **pages;
466 struct btrfs_fs_info *fs_info;
467 struct inode *inode;
468 unsigned long size;
469 int index;
470 int num_pages;
471 int entries;
472 int bitmaps;
473 unsigned check_crcs:1;
474};
475
476
477
478
479struct btrfs_full_stripe_locks_tree {
480 struct rb_root root;
481 struct mutex lock;
482};
483
484struct btrfs_block_group_cache {
485 struct btrfs_key key;
486 struct btrfs_block_group_item item;
487 struct btrfs_fs_info *fs_info;
488 struct inode *inode;
489 spinlock_t lock;
490 u64 pinned;
491 u64 reserved;
492 u64 delalloc_bytes;
493 u64 bytes_super;
494 u64 flags;
495 u64 cache_generation;
496
497
498
499
500
501 u32 bitmap_high_thresh;
502
503
504
505
506
507 u32 bitmap_low_thresh;
508
509
510
511
512
513
514 struct rw_semaphore data_rwsem;
515
516
517 unsigned long full_stripe_len;
518
519 unsigned int ro;
520 unsigned int iref:1;
521 unsigned int has_caching_ctl:1;
522 unsigned int removed:1;
523
524 int disk_cache_state;
525
526
527 int cached;
528 struct btrfs_caching_control *caching_ctl;
529 u64 last_byte_to_unpin;
530
531 struct btrfs_space_info *space_info;
532
533
534 struct btrfs_free_space_ctl *free_space_ctl;
535
536
537 struct rb_node cache_node;
538
539
540 struct list_head list;
541
542
543 atomic_t count;
544
545
546
547
548 struct list_head cluster_list;
549
550
551 struct list_head bg_list;
552
553
554 struct list_head ro_list;
555
556 atomic_t trimming;
557
558
559 struct list_head dirty_list;
560 struct list_head io_list;
561
562 struct btrfs_io_ctl io_ctl;
563
564
565
566
567
568
569
570
571
572
573 atomic_t reservations;
574
575
576
577
578
579
580
581
582
583 atomic_t nocow_writers;
584
585
586 struct mutex free_space_lock;
587
588
589
590
591
592 int needs_free_space;
593
594
595 struct btrfs_full_stripe_locks_tree full_stripe_locks_root;
596};
597
598
599struct seq_list {
600 struct list_head list;
601 u64 seq;
602};
603
604#define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 }
605
606#define SEQ_LAST ((u64)-1)
607
608enum btrfs_orphan_cleanup_state {
609 ORPHAN_CLEANUP_STARTED = 1,
610 ORPHAN_CLEANUP_DONE = 2,
611};
612
613
614struct btrfs_stripe_hash {
615 struct list_head hash_list;
616 spinlock_t lock;
617};
618
619
620struct btrfs_stripe_hash_table {
621 struct list_head stripe_cache;
622 spinlock_t cache_lock;
623 int cache_size;
624 struct btrfs_stripe_hash table[];
625};
626
627#define BTRFS_STRIPE_HASH_TABLE_BITS 11
628
629void btrfs_init_async_reclaim_work(struct work_struct *work);
630
631
632struct reloc_control;
633struct btrfs_device;
634struct btrfs_fs_devices;
635struct btrfs_balance_control;
636struct btrfs_delayed_root;
637
638
639
640
641
642
643
644
645
646
647struct btrfs_swapfile_pin {
648 struct rb_node node;
649 void *ptr;
650 struct inode *inode;
651
652
653
654
655 bool is_block_group;
656};
657
658bool btrfs_pinned_by_swapfile(struct btrfs_fs_info *fs_info, void *ptr);
659
660enum {
661 BTRFS_FS_BARRIER,
662 BTRFS_FS_CLOSING_START,
663 BTRFS_FS_CLOSING_DONE,
664 BTRFS_FS_LOG_RECOVERING,
665 BTRFS_FS_OPEN,
666 BTRFS_FS_QUOTA_ENABLED,
667 BTRFS_FS_UPDATE_UUID_TREE_GEN,
668 BTRFS_FS_CREATING_FREE_SPACE_TREE,
669 BTRFS_FS_BTREE_ERR,
670 BTRFS_FS_LOG1_ERR,
671 BTRFS_FS_LOG2_ERR,
672 BTRFS_FS_QUOTA_OVERRIDE,
673
674 BTRFS_FS_FROZEN,
675
676
677
678
679 BTRFS_FS_EXCL_OP,
680
681
682
683
684 BTRFS_FS_NEED_ASYNC_COMMIT,
685
686
687
688
689
690 BTRFS_FS_BALANCE_RUNNING,
691
692
693 BTRFS_FS_CLEANER_RUNNING,
694
695
696
697
698
699 BTRFS_FS_CSUM_IMPL_FAST,
700};
701
702struct btrfs_fs_info {
703 u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
704 unsigned long flags;
705 struct btrfs_root *extent_root;
706 struct btrfs_root *tree_root;
707 struct btrfs_root *chunk_root;
708 struct btrfs_root *dev_root;
709 struct btrfs_root *fs_root;
710 struct btrfs_root *csum_root;
711 struct btrfs_root *quota_root;
712 struct btrfs_root *uuid_root;
713 struct btrfs_root *free_space_root;
714
715
716 struct btrfs_root *log_root_tree;
717
718 spinlock_t fs_roots_radix_lock;
719 struct radix_tree_root fs_roots_radix;
720
721
722 spinlock_t block_group_cache_lock;
723 u64 first_logical_byte;
724 struct rb_root block_group_cache_tree;
725
726
727 atomic64_t free_chunk_space;
728
729 struct extent_io_tree freed_extents[2];
730 struct extent_io_tree *pinned_extents;
731
732
733 struct extent_map_tree mapping_tree;
734
735
736
737
738
739 struct btrfs_block_rsv global_block_rsv;
740
741 struct btrfs_block_rsv trans_block_rsv;
742
743 struct btrfs_block_rsv chunk_block_rsv;
744
745 struct btrfs_block_rsv delayed_block_rsv;
746
747 struct btrfs_block_rsv delayed_refs_rsv;
748
749 struct btrfs_block_rsv empty_block_rsv;
750
751 u64 generation;
752 u64 last_trans_committed;
753 u64 avg_delayed_ref_runtime;
754
755
756
757
758
759 u64 last_trans_log_full_commit;
760 unsigned long mount_opt;
761
762
763
764
765 unsigned long pending_changes;
766 unsigned long compress_type:4;
767 unsigned int compress_level;
768 u32 commit_interval;
769
770
771
772
773
774
775 u64 max_inline;
776
777 struct btrfs_transaction *running_transaction;
778 wait_queue_head_t transaction_throttle;
779 wait_queue_head_t transaction_wait;
780 wait_queue_head_t transaction_blocked_wait;
781 wait_queue_head_t async_submit_wait;
782
783
784
785
786
787
788
789
790
791
792
793 spinlock_t super_lock;
794 struct btrfs_super_block *super_copy;
795 struct btrfs_super_block *super_for_commit;
796 struct super_block *sb;
797 struct inode *btree_inode;
798 struct mutex tree_log_mutex;
799 struct mutex transaction_kthread_mutex;
800 struct mutex cleaner_mutex;
801 struct mutex chunk_mutex;
802
803
804
805
806
807 struct mutex ro_block_group_mutex;
808
809
810
811
812
813 struct btrfs_stripe_hash_table *stripe_hash_table;
814
815
816
817
818
819
820
821
822 struct mutex ordered_operations_mutex;
823
824 struct rw_semaphore commit_root_sem;
825
826 struct rw_semaphore cleanup_work_sem;
827
828 struct rw_semaphore subvol_sem;
829 struct srcu_struct subvol_srcu;
830
831 spinlock_t trans_lock;
832
833
834
835
836 struct mutex reloc_mutex;
837
838 struct list_head trans_list;
839 struct list_head dead_roots;
840 struct list_head caching_block_groups;
841
842 spinlock_t delayed_iput_lock;
843 struct list_head delayed_iputs;
844 atomic_t nr_delayed_iputs;
845 wait_queue_head_t delayed_iputs_wait;
846
847
848 spinlock_t tree_mod_seq_lock;
849 atomic64_t tree_mod_seq;
850 struct list_head tree_mod_seq_list;
851
852
853 rwlock_t tree_mod_log_lock;
854 struct rb_root tree_mod_log;
855
856 atomic_t async_delalloc_pages;
857
858
859
860
861 spinlock_t ordered_root_lock;
862
863
864
865
866
867
868
869
870 struct list_head ordered_roots;
871
872 struct mutex delalloc_root_mutex;
873 spinlock_t delalloc_root_lock;
874
875 struct list_head delalloc_roots;
876
877
878
879
880
881
882
883
884
885
886
887 struct btrfs_workqueue *workers;
888 struct btrfs_workqueue *delalloc_workers;
889 struct btrfs_workqueue *flush_workers;
890 struct btrfs_workqueue *endio_workers;
891 struct btrfs_workqueue *endio_meta_workers;
892 struct btrfs_workqueue *endio_raid56_workers;
893 struct btrfs_workqueue *endio_repair_workers;
894 struct btrfs_workqueue *rmw_workers;
895 struct btrfs_workqueue *endio_meta_write_workers;
896 struct btrfs_workqueue *endio_write_workers;
897 struct btrfs_workqueue *endio_freespace_worker;
898 struct btrfs_workqueue *submit_workers;
899 struct btrfs_workqueue *caching_workers;
900 struct btrfs_workqueue *readahead_workers;
901
902
903
904
905
906
907 struct btrfs_workqueue *fixup_workers;
908 struct btrfs_workqueue *delayed_workers;
909
910
911 struct btrfs_workqueue *extent_workers;
912 struct task_struct *transaction_kthread;
913 struct task_struct *cleaner_kthread;
914 u32 thread_pool_size;
915
916 struct kobject *space_info_kobj;
917
918 u64 total_pinned;
919
920
921 struct percpu_counter dirty_metadata_bytes;
922 struct percpu_counter delalloc_bytes;
923 struct percpu_counter dio_bytes;
924 s32 dirty_metadata_batch;
925 s32 delalloc_batch;
926
927 struct list_head dirty_cowonly_roots;
928
929 struct btrfs_fs_devices *fs_devices;
930
931
932
933
934
935
936 struct list_head space_info;
937
938 struct btrfs_space_info *data_sinfo;
939
940 struct reloc_control *reloc_ctl;
941
942
943 struct btrfs_free_cluster data_alloc_cluster;
944
945
946 struct btrfs_free_cluster meta_alloc_cluster;
947
948
949 spinlock_t defrag_inodes_lock;
950 struct rb_root defrag_inodes;
951 atomic_t defrag_running;
952
953
954 seqlock_t profiles_lock;
955
956
957
958
959
960 u64 avail_data_alloc_bits;
961 u64 avail_metadata_alloc_bits;
962 u64 avail_system_alloc_bits;
963
964
965 spinlock_t balance_lock;
966 struct mutex balance_mutex;
967 atomic_t balance_pause_req;
968 atomic_t balance_cancel_req;
969 struct btrfs_balance_control *balance_ctl;
970 wait_queue_head_t balance_wait_q;
971
972 u32 data_chunk_allocations;
973 u32 metadata_ratio;
974
975 void *bdev_holder;
976
977
978 struct mutex scrub_lock;
979 atomic_t scrubs_running;
980 atomic_t scrub_pause_req;
981 atomic_t scrubs_paused;
982 atomic_t scrub_cancel_req;
983 wait_queue_head_t scrub_pause_wait;
984
985
986
987
988 refcount_t scrub_workers_refcnt;
989 struct btrfs_workqueue *scrub_workers;
990 struct btrfs_workqueue *scrub_wr_completion_workers;
991 struct btrfs_workqueue *scrub_parity_workers;
992
993#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
994 u32 check_integrity_print_mask;
995#endif
996
997 u64 qgroup_flags;
998
999
1000 struct rb_root qgroup_tree;
1001 spinlock_t qgroup_lock;
1002
1003
1004
1005
1006
1007 struct ulist *qgroup_ulist;
1008
1009
1010 struct mutex qgroup_ioctl_lock;
1011
1012
1013 struct list_head dirty_qgroups;
1014
1015
1016 u64 qgroup_seq;
1017
1018
1019 struct mutex qgroup_rescan_lock;
1020 struct btrfs_key qgroup_rescan_progress;
1021 struct btrfs_workqueue *qgroup_rescan_workers;
1022 struct completion qgroup_rescan_completion;
1023 struct btrfs_work qgroup_rescan_work;
1024 bool qgroup_rescan_running;
1025
1026
1027 unsigned long fs_state;
1028
1029 struct btrfs_delayed_root *delayed_root;
1030
1031
1032 spinlock_t reada_lock;
1033 struct radix_tree_root reada_tree;
1034
1035
1036 atomic_t reada_works_cnt;
1037
1038
1039 spinlock_t buffer_lock;
1040 struct radix_tree_root buffer_radix;
1041
1042
1043 int backup_root_index;
1044
1045
1046 struct btrfs_dev_replace dev_replace;
1047
1048 struct semaphore uuid_tree_rescan_sem;
1049
1050
1051 struct work_struct async_reclaim_work;
1052
1053 spinlock_t unused_bgs_lock;
1054 struct list_head unused_bgs;
1055 struct mutex unused_bg_unpin_mutex;
1056 struct mutex delete_unused_bgs_mutex;
1057
1058
1059 u32 nodesize;
1060 u32 sectorsize;
1061 u32 stripesize;
1062
1063
1064 spinlock_t swapfile_pins_lock;
1065 struct rb_root swapfile_pins;
1066
1067 struct crypto_shash *csum_shash;
1068
1069
1070
1071
1072
1073 int send_in_progress;
1074
1075#ifdef CONFIG_BTRFS_FS_REF_VERIFY
1076 spinlock_t ref_verify_lock;
1077 struct rb_root block_tree;
1078#endif
1079};
1080
1081static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb)
1082{
1083 return sb->s_fs_info;
1084}
1085
1086struct btrfs_subvolume_writers {
1087 struct percpu_counter counter;
1088 wait_queue_head_t wait;
1089};
1090
1091
1092
1093
1094enum {
1095
1096
1097
1098
1099
1100
1101 BTRFS_ROOT_IN_TRANS_SETUP,
1102 BTRFS_ROOT_REF_COWS,
1103 BTRFS_ROOT_TRACK_DIRTY,
1104 BTRFS_ROOT_IN_RADIX,
1105 BTRFS_ROOT_ORPHAN_ITEM_INSERTED,
1106 BTRFS_ROOT_DEFRAG_RUNNING,
1107 BTRFS_ROOT_FORCE_COW,
1108 BTRFS_ROOT_MULTI_LOG_TASKS,
1109 BTRFS_ROOT_DIRTY,
1110 BTRFS_ROOT_DELETING,
1111
1112
1113
1114
1115
1116
1117 BTRFS_ROOT_DEAD_RELOC_TREE,
1118
1119 BTRFS_ROOT_DEAD_TREE,
1120};
1121
1122
1123
1124
1125
1126struct btrfs_qgroup_swapped_blocks {
1127 spinlock_t lock;
1128
1129 bool swapped;
1130 struct rb_root blocks[BTRFS_MAX_LEVEL];
1131};
1132
1133
1134
1135
1136
1137struct btrfs_root {
1138 struct extent_buffer *node;
1139
1140 struct extent_buffer *commit_root;
1141 struct btrfs_root *log_root;
1142 struct btrfs_root *reloc_root;
1143
1144 unsigned long state;
1145 struct btrfs_root_item root_item;
1146 struct btrfs_key root_key;
1147 struct btrfs_fs_info *fs_info;
1148 struct extent_io_tree dirty_log_pages;
1149
1150 struct mutex objectid_mutex;
1151
1152 spinlock_t accounting_lock;
1153 struct btrfs_block_rsv *block_rsv;
1154
1155
1156 struct btrfs_free_space_ctl *free_ino_ctl;
1157 enum btrfs_caching_type ino_cache_state;
1158 spinlock_t ino_cache_lock;
1159 wait_queue_head_t ino_cache_wait;
1160 struct btrfs_free_space_ctl *free_ino_pinned;
1161 u64 ino_cache_progress;
1162 struct inode *ino_cache_inode;
1163
1164 struct mutex log_mutex;
1165 wait_queue_head_t log_writer_wait;
1166 wait_queue_head_t log_commit_wait[2];
1167 struct list_head log_ctxs[2];
1168 atomic_t log_writers;
1169 atomic_t log_commit[2];
1170 atomic_t log_batch;
1171 int log_transid;
1172
1173 int log_transid_committed;
1174
1175 int last_log_commit;
1176 pid_t log_start_pid;
1177
1178 u64 last_trans;
1179
1180 u32 type;
1181
1182 u64 highest_objectid;
1183
1184 u64 defrag_trans_start;
1185 struct btrfs_key defrag_progress;
1186 struct btrfs_key defrag_max;
1187
1188
1189 struct list_head dirty_list;
1190
1191 struct list_head root_list;
1192
1193 spinlock_t log_extents_lock[2];
1194 struct list_head logged_list[2];
1195
1196 int orphan_cleanup_state;
1197
1198 spinlock_t inode_lock;
1199
1200 struct rb_root inode_tree;
1201
1202
1203
1204
1205
1206 struct radix_tree_root delayed_nodes_tree;
1207
1208
1209
1210
1211 dev_t anon_dev;
1212
1213 spinlock_t root_item_lock;
1214 refcount_t refs;
1215
1216 struct mutex delalloc_mutex;
1217 spinlock_t delalloc_lock;
1218
1219
1220
1221
1222
1223 struct list_head delalloc_inodes;
1224 struct list_head delalloc_root;
1225 u64 nr_delalloc_inodes;
1226
1227 struct mutex ordered_extent_mutex;
1228
1229
1230
1231
1232 spinlock_t ordered_extent_lock;
1233
1234
1235
1236
1237
1238
1239 struct list_head ordered_extents;
1240 struct list_head ordered_root;
1241 u64 nr_ordered_extents;
1242
1243
1244
1245
1246
1247
1248
1249 struct list_head reloc_dirty_list;
1250
1251
1252
1253
1254
1255 int send_in_progress;
1256
1257
1258
1259
1260
1261 int dedupe_in_progress;
1262 struct btrfs_subvolume_writers *subv_writers;
1263 atomic_t will_be_snapshotted;
1264 atomic_t snapshot_force_cow;
1265
1266
1267 spinlock_t qgroup_meta_rsv_lock;
1268 u64 qgroup_meta_rsv_pertrans;
1269 u64 qgroup_meta_rsv_prealloc;
1270
1271
1272 atomic_t nr_swapfiles;
1273
1274
1275 struct btrfs_qgroup_swapped_blocks swapped_blocks;
1276
1277#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
1278 u64 alloc_bytenr;
1279#endif
1280};
1281
1282struct btrfs_file_private {
1283 void *filldir_buf;
1284};
1285
1286static inline u32 btrfs_inode_sectorsize(const struct inode *inode)
1287{
1288 return btrfs_sb(inode->i_sb)->sectorsize;
1289}
1290
1291static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info)
1292{
1293
1294 return info->nodesize - sizeof(struct btrfs_header);
1295}
1296
1297#define BTRFS_LEAF_DATA_OFFSET offsetof(struct btrfs_leaf, items)
1298
1299static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info)
1300{
1301 return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item);
1302}
1303
1304static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info)
1305{
1306 return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr);
1307}
1308
1309#define BTRFS_FILE_EXTENT_INLINE_DATA_START \
1310 (offsetof(struct btrfs_file_extent_item, disk_bytenr))
1311static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info)
1312{
1313 return BTRFS_MAX_ITEM_SIZE(info) -
1314 BTRFS_FILE_EXTENT_INLINE_DATA_START;
1315}
1316
1317static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info)
1318{
1319 return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item);
1320}
1321
1322
1323
1324
1325
1326
1327#define BTRFS_MOUNT_NODATASUM (1 << 0)
1328#define BTRFS_MOUNT_NODATACOW (1 << 1)
1329#define BTRFS_MOUNT_NOBARRIER (1 << 2)
1330#define BTRFS_MOUNT_SSD (1 << 3)
1331#define BTRFS_MOUNT_DEGRADED (1 << 4)
1332#define BTRFS_MOUNT_COMPRESS (1 << 5)
1333#define BTRFS_MOUNT_NOTREELOG (1 << 6)
1334#define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7)
1335#define BTRFS_MOUNT_SSD_SPREAD (1 << 8)
1336#define BTRFS_MOUNT_NOSSD (1 << 9)
1337#define BTRFS_MOUNT_DISCARD (1 << 10)
1338#define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11)
1339#define BTRFS_MOUNT_SPACE_CACHE (1 << 12)
1340#define BTRFS_MOUNT_CLEAR_CACHE (1 << 13)
1341#define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14)
1342#define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15)
1343#define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16)
1344#define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17)
1345#define BTRFS_MOUNT_USEBACKUPROOT (1 << 18)
1346#define BTRFS_MOUNT_SKIP_BALANCE (1 << 19)
1347#define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20)
1348#define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21)
1349#define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22)
1350#define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23)
1351#define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24)
1352#define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25)
1353#define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26)
1354#define BTRFS_MOUNT_NOLOGREPLAY (1 << 27)
1355#define BTRFS_MOUNT_REF_VERIFY (1 << 28)
1356
1357#define BTRFS_DEFAULT_COMMIT_INTERVAL (30)
1358#define BTRFS_DEFAULT_MAX_INLINE (2048)
1359
1360#define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt)
1361#define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt)
1362#define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt)
1363#define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \
1364 BTRFS_MOUNT_##opt)
1365
1366#define btrfs_set_and_info(fs_info, opt, fmt, args...) \
1367{ \
1368 if (!btrfs_test_opt(fs_info, opt)) \
1369 btrfs_info(fs_info, fmt, ##args); \
1370 btrfs_set_opt(fs_info->mount_opt, opt); \
1371}
1372
1373#define btrfs_clear_and_info(fs_info, opt, fmt, args...) \
1374{ \
1375 if (btrfs_test_opt(fs_info, opt)) \
1376 btrfs_info(fs_info, fmt, ##args); \
1377 btrfs_clear_opt(fs_info->mount_opt, opt); \
1378}
1379
1380#ifdef CONFIG_BTRFS_DEBUG
1381static inline int
1382btrfs_should_fragment_free_space(struct btrfs_block_group_cache *block_group)
1383{
1384 struct btrfs_fs_info *fs_info = block_group->fs_info;
1385
1386 return (btrfs_test_opt(fs_info, FRAGMENT_METADATA) &&
1387 block_group->flags & BTRFS_BLOCK_GROUP_METADATA) ||
1388 (btrfs_test_opt(fs_info, FRAGMENT_DATA) &&
1389 block_group->flags & BTRFS_BLOCK_GROUP_DATA);
1390}
1391#endif
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401#define BTRFS_PENDING_SET_INODE_MAP_CACHE (0)
1402#define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1)
1403#define BTRFS_PENDING_COMMIT (2)
1404
1405#define btrfs_test_pending(info, opt) \
1406 test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes)
1407#define btrfs_set_pending(info, opt) \
1408 set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes)
1409#define btrfs_clear_pending(info, opt) \
1410 clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes)
1411
1412
1413
1414
1415
1416
1417
1418#define btrfs_set_pending_and_info(info, opt, fmt, args...) \
1419do { \
1420 if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \
1421 btrfs_info((info), fmt, ##args); \
1422 btrfs_set_pending((info), SET_##opt); \
1423 btrfs_clear_pending((info), CLEAR_##opt); \
1424 } \
1425} while(0)
1426
1427#define btrfs_clear_pending_and_info(info, opt, fmt, args...) \
1428do { \
1429 if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \
1430 btrfs_info((info), fmt, ##args); \
1431 btrfs_set_pending((info), CLEAR_##opt); \
1432 btrfs_clear_pending((info), SET_##opt); \
1433 } \
1434} while(0)
1435
1436
1437
1438
1439#define BTRFS_INODE_NODATASUM (1 << 0)
1440#define BTRFS_INODE_NODATACOW (1 << 1)
1441#define BTRFS_INODE_READONLY (1 << 2)
1442#define BTRFS_INODE_NOCOMPRESS (1 << 3)
1443#define BTRFS_INODE_PREALLOC (1 << 4)
1444#define BTRFS_INODE_SYNC (1 << 5)
1445#define BTRFS_INODE_IMMUTABLE (1 << 6)
1446#define BTRFS_INODE_APPEND (1 << 7)
1447#define BTRFS_INODE_NODUMP (1 << 8)
1448#define BTRFS_INODE_NOATIME (1 << 9)
1449#define BTRFS_INODE_DIRSYNC (1 << 10)
1450#define BTRFS_INODE_COMPRESS (1 << 11)
1451
1452#define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31)
1453
1454#define BTRFS_INODE_FLAG_MASK \
1455 (BTRFS_INODE_NODATASUM | \
1456 BTRFS_INODE_NODATACOW | \
1457 BTRFS_INODE_READONLY | \
1458 BTRFS_INODE_NOCOMPRESS | \
1459 BTRFS_INODE_PREALLOC | \
1460 BTRFS_INODE_SYNC | \
1461 BTRFS_INODE_IMMUTABLE | \
1462 BTRFS_INODE_APPEND | \
1463 BTRFS_INODE_NODUMP | \
1464 BTRFS_INODE_NOATIME | \
1465 BTRFS_INODE_DIRSYNC | \
1466 BTRFS_INODE_COMPRESS | \
1467 BTRFS_INODE_ROOT_ITEM_INIT)
1468
1469struct btrfs_map_token {
1470 const struct extent_buffer *eb;
1471 char *kaddr;
1472 unsigned long offset;
1473};
1474
1475#define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \
1476 ((bytes) >> (fs_info)->sb->s_blocksize_bits)
1477
1478static inline void btrfs_init_map_token (struct btrfs_map_token *token)
1479{
1480 token->kaddr = NULL;
1481}
1482
1483
1484
1485
1486
1487#define le8_to_cpu(v) (v)
1488#define cpu_to_le8(v) (v)
1489#define __le8 u8
1490
1491#define read_eb_member(eb, ptr, type, member, result) (\
1492 read_extent_buffer(eb, (char *)(result), \
1493 ((unsigned long)(ptr)) + \
1494 offsetof(type, member), \
1495 sizeof(((type *)0)->member)))
1496
1497#define write_eb_member(eb, ptr, type, member, result) (\
1498 write_extent_buffer(eb, (char *)(result), \
1499 ((unsigned long)(ptr)) + \
1500 offsetof(type, member), \
1501 sizeof(((type *)0)->member)))
1502
1503#define DECLARE_BTRFS_SETGET_BITS(bits) \
1504u##bits btrfs_get_token_##bits(const struct extent_buffer *eb, \
1505 const void *ptr, unsigned long off, \
1506 struct btrfs_map_token *token); \
1507void btrfs_set_token_##bits(struct extent_buffer *eb, const void *ptr, \
1508 unsigned long off, u##bits val, \
1509 struct btrfs_map_token *token); \
1510static inline u##bits btrfs_get_##bits(const struct extent_buffer *eb, \
1511 const void *ptr, \
1512 unsigned long off) \
1513{ \
1514 return btrfs_get_token_##bits(eb, ptr, off, NULL); \
1515} \
1516static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr,\
1517 unsigned long off, u##bits val) \
1518{ \
1519 btrfs_set_token_##bits(eb, ptr, off, val, NULL); \
1520}
1521
1522DECLARE_BTRFS_SETGET_BITS(8)
1523DECLARE_BTRFS_SETGET_BITS(16)
1524DECLARE_BTRFS_SETGET_BITS(32)
1525DECLARE_BTRFS_SETGET_BITS(64)
1526
1527#define BTRFS_SETGET_FUNCS(name, type, member, bits) \
1528static inline u##bits btrfs_##name(const struct extent_buffer *eb, \
1529 const type *s) \
1530{ \
1531 BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
1532 return btrfs_get_##bits(eb, s, offsetof(type, member)); \
1533} \
1534static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \
1535 u##bits val) \
1536{ \
1537 BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
1538 btrfs_set_##bits(eb, s, offsetof(type, member), val); \
1539} \
1540static inline u##bits btrfs_token_##name(const struct extent_buffer *eb,\
1541 const type *s, \
1542 struct btrfs_map_token *token) \
1543{ \
1544 BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
1545 return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \
1546} \
1547static inline void btrfs_set_token_##name(struct extent_buffer *eb, \
1548 type *s, u##bits val, \
1549 struct btrfs_map_token *token) \
1550{ \
1551 BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
1552 btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \
1553}
1554
1555#define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
1556static inline u##bits btrfs_##name(const struct extent_buffer *eb) \
1557{ \
1558 const type *p = page_address(eb->pages[0]); \
1559 u##bits res = le##bits##_to_cpu(p->member); \
1560 return res; \
1561} \
1562static inline void btrfs_set_##name(struct extent_buffer *eb, \
1563 u##bits val) \
1564{ \
1565 type *p = page_address(eb->pages[0]); \
1566 p->member = cpu_to_le##bits(val); \
1567}
1568
1569#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
1570static inline u##bits btrfs_##name(const type *s) \
1571{ \
1572 return le##bits##_to_cpu(s->member); \
1573} \
1574static inline void btrfs_set_##name(type *s, u##bits val) \
1575{ \
1576 s->member = cpu_to_le##bits(val); \
1577}
1578
1579
1580static inline u64 btrfs_device_total_bytes(struct extent_buffer *eb,
1581 struct btrfs_dev_item *s)
1582{
1583 BUILD_BUG_ON(sizeof(u64) !=
1584 sizeof(((struct btrfs_dev_item *)0))->total_bytes);
1585 return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item,
1586 total_bytes));
1587}
1588static inline void btrfs_set_device_total_bytes(struct extent_buffer *eb,
1589 struct btrfs_dev_item *s,
1590 u64 val)
1591{
1592 BUILD_BUG_ON(sizeof(u64) !=
1593 sizeof(((struct btrfs_dev_item *)0))->total_bytes);
1594 WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize));
1595 btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val);
1596}
1597
1598
1599BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64);
1600BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64);
1601BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32);
1602BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32);
1603BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item,
1604 start_offset, 64);
1605BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32);
1606BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64);
1607BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32);
1608BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8);
1609BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8);
1610BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64);
1611
1612BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64);
1613BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item,
1614 total_bytes, 64);
1615BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item,
1616 bytes_used, 64);
1617BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item,
1618 io_align, 32);
1619BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item,
1620 io_width, 32);
1621BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item,
1622 sector_size, 32);
1623BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64);
1624BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item,
1625 dev_group, 32);
1626BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item,
1627 seek_speed, 8);
1628BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item,
1629 bandwidth, 8);
1630BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item,
1631 generation, 64);
1632
1633static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d)
1634{
1635 return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid);
1636}
1637
1638static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d)
1639{
1640 return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid);
1641}
1642
1643BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64);
1644BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64);
1645BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64);
1646BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32);
1647BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32);
1648BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32);
1649BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64);
1650BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16);
1651BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16);
1652BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64);
1653BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64);
1654
1655static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s)
1656{
1657 return (char *)s + offsetof(struct btrfs_stripe, dev_uuid);
1658}
1659
1660BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64);
1661BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64);
1662BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk,
1663 stripe_len, 64);
1664BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk,
1665 io_align, 32);
1666BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk,
1667 io_width, 32);
1668BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk,
1669 sector_size, 32);
1670BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64);
1671BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk,
1672 num_stripes, 16);
1673BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk,
1674 sub_stripes, 16);
1675BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64);
1676BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64);
1677
1678static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c,
1679 int nr)
1680{
1681 unsigned long offset = (unsigned long)c;
1682 offset += offsetof(struct btrfs_chunk, stripe);
1683 offset += nr * sizeof(struct btrfs_stripe);
1684 return (struct btrfs_stripe *)offset;
1685}
1686
1687static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr)
1688{
1689 return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr));
1690}
1691
1692static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb,
1693 struct btrfs_chunk *c, int nr)
1694{
1695 return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr));
1696}
1697
1698static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb,
1699 struct btrfs_chunk *c, int nr)
1700{
1701 return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr));
1702}
1703
1704
1705BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item,
1706 used, 64);
1707BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item,
1708 used, 64);
1709BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid,
1710 struct btrfs_block_group_item, chunk_objectid, 64);
1711
1712BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid,
1713 struct btrfs_block_group_item, chunk_objectid, 64);
1714BTRFS_SETGET_FUNCS(disk_block_group_flags,
1715 struct btrfs_block_group_item, flags, 64);
1716BTRFS_SETGET_STACK_FUNCS(block_group_flags,
1717 struct btrfs_block_group_item, flags, 64);
1718
1719
1720BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info,
1721 extent_count, 32);
1722BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32);
1723
1724
1725BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16);
1726BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64);
1727
1728
1729BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref,
1730 parent_objectid, 64);
1731BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref,
1732 name_len, 16);
1733BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64);
1734
1735
1736BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64);
1737BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64);
1738BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64);
1739BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64);
1740BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64);
1741BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64);
1742BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32);
1743BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32);
1744BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32);
1745BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32);
1746BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64);
1747BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64);
1748BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item,
1749 generation, 64);
1750BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item,
1751 sequence, 64);
1752BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item,
1753 transid, 64);
1754BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64);
1755BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item,
1756 nbytes, 64);
1757BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item,
1758 block_group, 64);
1759BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32);
1760BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32);
1761BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32);
1762BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32);
1763BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64);
1764BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64);
1765BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64);
1766BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32);
1767BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64);
1768BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32);
1769
1770
1771BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent,
1772 chunk_tree, 64);
1773BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent,
1774 chunk_objectid, 64);
1775BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent,
1776 chunk_offset, 64);
1777BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64);
1778
1779static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev)
1780{
1781 unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid);
1782 return (unsigned long)dev + ptr;
1783}
1784
1785BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64);
1786BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item,
1787 generation, 64);
1788BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64);
1789
1790BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32);
1791
1792
1793BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8);
1794
1795static inline void btrfs_tree_block_key(struct extent_buffer *eb,
1796 struct btrfs_tree_block_info *item,
1797 struct btrfs_disk_key *key)
1798{
1799 read_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
1800}
1801
1802static inline void btrfs_set_tree_block_key(struct extent_buffer *eb,
1803 struct btrfs_tree_block_info *item,
1804 struct btrfs_disk_key *key)
1805{
1806 write_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
1807}
1808
1809BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref,
1810 root, 64);
1811BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref,
1812 objectid, 64);
1813BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref,
1814 offset, 64);
1815BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref,
1816 count, 32);
1817
1818BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref,
1819 count, 32);
1820
1821BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref,
1822 type, 8);
1823BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref,
1824 offset, 64);
1825
1826static inline u32 btrfs_extent_inline_ref_size(int type)
1827{
1828 if (type == BTRFS_TREE_BLOCK_REF_KEY ||
1829 type == BTRFS_SHARED_BLOCK_REF_KEY)
1830 return sizeof(struct btrfs_extent_inline_ref);
1831 if (type == BTRFS_SHARED_DATA_REF_KEY)
1832 return sizeof(struct btrfs_shared_data_ref) +
1833 sizeof(struct btrfs_extent_inline_ref);
1834 if (type == BTRFS_EXTENT_DATA_REF_KEY)
1835 return sizeof(struct btrfs_extent_data_ref) +
1836 offsetof(struct btrfs_extent_inline_ref, offset);
1837 return 0;
1838}
1839
1840BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64);
1841BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0,
1842 generation, 64);
1843BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64);
1844BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32);
1845
1846
1847BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64);
1848BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64);
1849BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr,
1850 blockptr, 64);
1851BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr,
1852 generation, 64);
1853
1854static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr)
1855{
1856 unsigned long ptr;
1857 ptr = offsetof(struct btrfs_node, ptrs) +
1858 sizeof(struct btrfs_key_ptr) * nr;
1859 return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr);
1860}
1861
1862static inline void btrfs_set_node_blockptr(struct extent_buffer *eb,
1863 int nr, u64 val)
1864{
1865 unsigned long ptr;
1866 ptr = offsetof(struct btrfs_node, ptrs) +
1867 sizeof(struct btrfs_key_ptr) * nr;
1868 btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val);
1869}
1870
1871static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr)
1872{
1873 unsigned long ptr;
1874 ptr = offsetof(struct btrfs_node, ptrs) +
1875 sizeof(struct btrfs_key_ptr) * nr;
1876 return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr);
1877}
1878
1879static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb,
1880 int nr, u64 val)
1881{
1882 unsigned long ptr;
1883 ptr = offsetof(struct btrfs_node, ptrs) +
1884 sizeof(struct btrfs_key_ptr) * nr;
1885 btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val);
1886}
1887
1888static inline unsigned long btrfs_node_key_ptr_offset(int nr)
1889{
1890 return offsetof(struct btrfs_node, ptrs) +
1891 sizeof(struct btrfs_key_ptr) * nr;
1892}
1893
1894void btrfs_node_key(const struct extent_buffer *eb,
1895 struct btrfs_disk_key *disk_key, int nr);
1896
1897static inline void btrfs_set_node_key(struct extent_buffer *eb,
1898 struct btrfs_disk_key *disk_key, int nr)
1899{
1900 unsigned long ptr;
1901 ptr = btrfs_node_key_ptr_offset(nr);
1902 write_eb_member(eb, (struct btrfs_key_ptr *)ptr,
1903 struct btrfs_key_ptr, key, disk_key);
1904}
1905
1906
1907BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32);
1908BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32);
1909BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32);
1910BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32);
1911
1912static inline unsigned long btrfs_item_nr_offset(int nr)
1913{
1914 return offsetof(struct btrfs_leaf, items) +
1915 sizeof(struct btrfs_item) * nr;
1916}
1917
1918static inline struct btrfs_item *btrfs_item_nr(int nr)
1919{
1920 return (struct btrfs_item *)btrfs_item_nr_offset(nr);
1921}
1922
1923static inline u32 btrfs_item_end(const struct extent_buffer *eb,
1924 struct btrfs_item *item)
1925{
1926 return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item);
1927}
1928
1929static inline u32 btrfs_item_end_nr(const struct extent_buffer *eb, int nr)
1930{
1931 return btrfs_item_end(eb, btrfs_item_nr(nr));
1932}
1933
1934static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr)
1935{
1936 return btrfs_item_offset(eb, btrfs_item_nr(nr));
1937}
1938
1939static inline u32 btrfs_item_size_nr(const struct extent_buffer *eb, int nr)
1940{
1941 return btrfs_item_size(eb, btrfs_item_nr(nr));
1942}
1943
1944static inline void btrfs_item_key(const struct extent_buffer *eb,
1945 struct btrfs_disk_key *disk_key, int nr)
1946{
1947 struct btrfs_item *item = btrfs_item_nr(nr);
1948 read_eb_member(eb, item, struct btrfs_item, key, disk_key);
1949}
1950
1951static inline void btrfs_set_item_key(struct extent_buffer *eb,
1952 struct btrfs_disk_key *disk_key, int nr)
1953{
1954 struct btrfs_item *item = btrfs_item_nr(nr);
1955 write_eb_member(eb, item, struct btrfs_item, key, disk_key);
1956}
1957
1958BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64);
1959
1960
1961
1962
1963BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64);
1964BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64);
1965BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16);
1966
1967
1968BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16);
1969BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8);
1970BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16);
1971BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64);
1972BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8);
1973BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item,
1974 data_len, 16);
1975BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item,
1976 name_len, 16);
1977BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item,
1978 transid, 64);
1979
1980static inline void btrfs_dir_item_key(const struct extent_buffer *eb,
1981 const struct btrfs_dir_item *item,
1982 struct btrfs_disk_key *key)
1983{
1984 read_eb_member(eb, item, struct btrfs_dir_item, location, key);
1985}
1986
1987static inline void btrfs_set_dir_item_key(struct extent_buffer *eb,
1988 struct btrfs_dir_item *item,
1989 const struct btrfs_disk_key *key)
1990{
1991 write_eb_member(eb, item, struct btrfs_dir_item, location, key);
1992}
1993
1994BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header,
1995 num_entries, 64);
1996BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header,
1997 num_bitmaps, 64);
1998BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header,
1999 generation, 64);
2000
2001static inline void btrfs_free_space_key(const struct extent_buffer *eb,
2002 const struct btrfs_free_space_header *h,
2003 struct btrfs_disk_key *key)
2004{
2005 read_eb_member(eb, h, struct btrfs_free_space_header, location, key);
2006}
2007
2008static inline void btrfs_set_free_space_key(struct extent_buffer *eb,
2009 struct btrfs_free_space_header *h,
2010 const struct btrfs_disk_key *key)
2011{
2012 write_eb_member(eb, h, struct btrfs_free_space_header, location, key);
2013}
2014
2015
2016BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key,
2017 objectid, 64);
2018BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64);
2019BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8);
2020
2021static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu,
2022 const struct btrfs_disk_key *disk)
2023{
2024 cpu->offset = le64_to_cpu(disk->offset);
2025 cpu->type = disk->type;
2026 cpu->objectid = le64_to_cpu(disk->objectid);
2027}
2028
2029static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk,
2030 const struct btrfs_key *cpu)
2031{
2032 disk->offset = cpu_to_le64(cpu->offset);
2033 disk->type = cpu->type;
2034 disk->objectid = cpu_to_le64(cpu->objectid);
2035}
2036
2037static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb,
2038 struct btrfs_key *key, int nr)
2039{
2040 struct btrfs_disk_key disk_key;
2041 btrfs_node_key(eb, &disk_key, nr);
2042 btrfs_disk_key_to_cpu(key, &disk_key);
2043}
2044
2045static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb,
2046 struct btrfs_key *key, int nr)
2047{
2048 struct btrfs_disk_key disk_key;
2049 btrfs_item_key(eb, &disk_key, nr);
2050 btrfs_disk_key_to_cpu(key, &disk_key);
2051}
2052
2053static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb,
2054 const struct btrfs_dir_item *item,
2055 struct btrfs_key *key)
2056{
2057 struct btrfs_disk_key disk_key;
2058 btrfs_dir_item_key(eb, item, &disk_key);
2059 btrfs_disk_key_to_cpu(key, &disk_key);
2060}
2061
2062static inline u8 btrfs_key_type(const struct btrfs_key *key)
2063{
2064 return key->type;
2065}
2066
2067static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val)
2068{
2069 key->type = val;
2070}
2071
2072
2073BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64);
2074BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header,
2075 generation, 64);
2076BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64);
2077BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32);
2078BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64);
2079BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8);
2080BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header,
2081 generation, 64);
2082BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64);
2083BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header,
2084 nritems, 32);
2085BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64);
2086
2087static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag)
2088{
2089 return (btrfs_header_flags(eb) & flag) == flag;
2090}
2091
2092static inline void btrfs_set_header_flag(struct extent_buffer *eb, u64 flag)
2093{
2094 u64 flags = btrfs_header_flags(eb);
2095 btrfs_set_header_flags(eb, flags | flag);
2096}
2097
2098static inline void btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag)
2099{
2100 u64 flags = btrfs_header_flags(eb);
2101 btrfs_set_header_flags(eb, flags & ~flag);
2102}
2103
2104static inline int btrfs_header_backref_rev(const struct extent_buffer *eb)
2105{
2106 u64 flags = btrfs_header_flags(eb);
2107 return flags >> BTRFS_BACKREF_REV_SHIFT;
2108}
2109
2110static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb,
2111 int rev)
2112{
2113 u64 flags = btrfs_header_flags(eb);
2114 flags &= ~BTRFS_BACKREF_REV_MASK;
2115 flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT;
2116 btrfs_set_header_flags(eb, flags);
2117}
2118
2119static inline unsigned long btrfs_header_fsid(void)
2120{
2121 return offsetof(struct btrfs_header, fsid);
2122}
2123
2124static inline unsigned long btrfs_header_chunk_tree_uuid(const struct extent_buffer *eb)
2125{
2126 return offsetof(struct btrfs_header, chunk_tree_uuid);
2127}
2128
2129static inline int btrfs_is_leaf(const struct extent_buffer *eb)
2130{
2131 return btrfs_header_level(eb) == 0;
2132}
2133
2134
2135BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item,
2136 generation, 64);
2137BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32);
2138BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64);
2139BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8);
2140
2141BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item,
2142 generation, 64);
2143BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64);
2144BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8);
2145BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64);
2146BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32);
2147BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64);
2148BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64);
2149BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64);
2150BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item,
2151 last_snapshot, 64);
2152BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item,
2153 generation_v2, 64);
2154BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item,
2155 ctransid, 64);
2156BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item,
2157 otransid, 64);
2158BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item,
2159 stransid, 64);
2160BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item,
2161 rtransid, 64);
2162
2163static inline bool btrfs_root_readonly(const struct btrfs_root *root)
2164{
2165 return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0;
2166}
2167
2168static inline bool btrfs_root_dead(const struct btrfs_root *root)
2169{
2170 return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0;
2171}
2172
2173
2174BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup,
2175 tree_root, 64);
2176BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup,
2177 tree_root_gen, 64);
2178BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup,
2179 tree_root_level, 8);
2180
2181BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup,
2182 chunk_root, 64);
2183BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup,
2184 chunk_root_gen, 64);
2185BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup,
2186 chunk_root_level, 8);
2187
2188BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup,
2189 extent_root, 64);
2190BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup,
2191 extent_root_gen, 64);
2192BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup,
2193 extent_root_level, 8);
2194
2195BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup,
2196 fs_root, 64);
2197BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup,
2198 fs_root_gen, 64);
2199BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup,
2200 fs_root_level, 8);
2201
2202BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup,
2203 dev_root, 64);
2204BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup,
2205 dev_root_gen, 64);
2206BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup,
2207 dev_root_level, 8);
2208
2209BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup,
2210 csum_root, 64);
2211BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup,
2212 csum_root_gen, 64);
2213BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup,
2214 csum_root_level, 8);
2215BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup,
2216 total_bytes, 64);
2217BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup,
2218 bytes_used, 64);
2219BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup,
2220 num_devices, 64);
2221
2222
2223BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64);
2224
2225static inline void btrfs_balance_data(const struct extent_buffer *eb,
2226 const struct btrfs_balance_item *bi,
2227 struct btrfs_disk_balance_args *ba)
2228{
2229 read_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
2230}
2231
2232static inline void btrfs_set_balance_data(struct extent_buffer *eb,
2233 struct btrfs_balance_item *bi,
2234 const struct btrfs_disk_balance_args *ba)
2235{
2236 write_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
2237}
2238
2239static inline void btrfs_balance_meta(const struct extent_buffer *eb,
2240 const struct btrfs_balance_item *bi,
2241 struct btrfs_disk_balance_args *ba)
2242{
2243 read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
2244}
2245
2246static inline void btrfs_set_balance_meta(struct extent_buffer *eb,
2247 struct btrfs_balance_item *bi,
2248 const struct btrfs_disk_balance_args *ba)
2249{
2250 write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
2251}
2252
2253static inline void btrfs_balance_sys(const struct extent_buffer *eb,
2254 const struct btrfs_balance_item *bi,
2255 struct btrfs_disk_balance_args *ba)
2256{
2257 read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
2258}
2259
2260static inline void btrfs_set_balance_sys(struct extent_buffer *eb,
2261 struct btrfs_balance_item *bi,
2262 const struct btrfs_disk_balance_args *ba)
2263{
2264 write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
2265}
2266
2267static inline void
2268btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu,
2269 const struct btrfs_disk_balance_args *disk)
2270{
2271 memset(cpu, 0, sizeof(*cpu));
2272
2273 cpu->profiles = le64_to_cpu(disk->profiles);
2274 cpu->usage = le64_to_cpu(disk->usage);
2275 cpu->devid = le64_to_cpu(disk->devid);
2276 cpu->pstart = le64_to_cpu(disk->pstart);
2277 cpu->pend = le64_to_cpu(disk->pend);
2278 cpu->vstart = le64_to_cpu(disk->vstart);
2279 cpu->vend = le64_to_cpu(disk->vend);
2280 cpu->target = le64_to_cpu(disk->target);
2281 cpu->flags = le64_to_cpu(disk->flags);
2282 cpu->limit = le64_to_cpu(disk->limit);
2283 cpu->stripes_min = le32_to_cpu(disk->stripes_min);
2284 cpu->stripes_max = le32_to_cpu(disk->stripes_max);
2285}
2286
2287static inline void
2288btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk,
2289 const struct btrfs_balance_args *cpu)
2290{
2291 memset(disk, 0, sizeof(*disk));
2292
2293 disk->profiles = cpu_to_le64(cpu->profiles);
2294 disk->usage = cpu_to_le64(cpu->usage);
2295 disk->devid = cpu_to_le64(cpu->devid);
2296 disk->pstart = cpu_to_le64(cpu->pstart);
2297 disk->pend = cpu_to_le64(cpu->pend);
2298 disk->vstart = cpu_to_le64(cpu->vstart);
2299 disk->vend = cpu_to_le64(cpu->vend);
2300 disk->target = cpu_to_le64(cpu->target);
2301 disk->flags = cpu_to_le64(cpu->flags);
2302 disk->limit = cpu_to_le64(cpu->limit);
2303 disk->stripes_min = cpu_to_le32(cpu->stripes_min);
2304 disk->stripes_max = cpu_to_le32(cpu->stripes_max);
2305}
2306
2307
2308BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64);
2309BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64);
2310BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block,
2311 generation, 64);
2312BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64);
2313BTRFS_SETGET_STACK_FUNCS(super_sys_array_size,
2314 struct btrfs_super_block, sys_chunk_array_size, 32);
2315BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation,
2316 struct btrfs_super_block, chunk_root_generation, 64);
2317BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block,
2318 root_level, 8);
2319BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block,
2320 chunk_root, 64);
2321BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block,
2322 chunk_root_level, 8);
2323BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block,
2324 log_root, 64);
2325BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block,
2326 log_root_transid, 64);
2327BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block,
2328 log_root_level, 8);
2329BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block,
2330 total_bytes, 64);
2331BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block,
2332 bytes_used, 64);
2333BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block,
2334 sectorsize, 32);
2335BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block,
2336 nodesize, 32);
2337BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block,
2338 stripesize, 32);
2339BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block,
2340 root_dir_objectid, 64);
2341BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block,
2342 num_devices, 64);
2343BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block,
2344 compat_flags, 64);
2345BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block,
2346 compat_ro_flags, 64);
2347BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block,
2348 incompat_flags, 64);
2349BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block,
2350 csum_type, 16);
2351BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block,
2352 cache_generation, 64);
2353BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64);
2354BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block,
2355 uuid_tree_generation, 64);
2356
2357static inline int btrfs_super_csum_size(const struct btrfs_super_block *s)
2358{
2359 u16 t = btrfs_super_csum_type(s);
2360
2361
2362
2363 return btrfs_csum_sizes[t];
2364}
2365
2366static inline const char *btrfs_super_csum_name(u16 csum_type)
2367{
2368
2369 return btrfs_csum_names[csum_type];
2370}
2371
2372
2373
2374
2375
2376
2377static inline unsigned int leaf_data_end(const struct extent_buffer *leaf)
2378{
2379 u32 nr = btrfs_header_nritems(leaf);
2380
2381 if (nr == 0)
2382 return BTRFS_LEAF_DATA_SIZE(leaf->fs_info);
2383 return btrfs_item_offset_nr(leaf, nr - 1);
2384}
2385
2386
2387BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8);
2388BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr,
2389 struct btrfs_file_extent_item, disk_bytenr, 64);
2390BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset,
2391 struct btrfs_file_extent_item, offset, 64);
2392BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation,
2393 struct btrfs_file_extent_item, generation, 64);
2394BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes,
2395 struct btrfs_file_extent_item, num_bytes, 64);
2396BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes,
2397 struct btrfs_file_extent_item, disk_num_bytes, 64);
2398BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression,
2399 struct btrfs_file_extent_item, compression, 8);
2400
2401static inline unsigned long
2402btrfs_file_extent_inline_start(const struct btrfs_file_extent_item *e)
2403{
2404 return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START;
2405}
2406
2407static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)
2408{
2409 return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize;
2410}
2411
2412BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item,
2413 disk_bytenr, 64);
2414BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item,
2415 generation, 64);
2416BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item,
2417 disk_num_bytes, 64);
2418BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item,
2419 offset, 64);
2420BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item,
2421 num_bytes, 64);
2422BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item,
2423 ram_bytes, 64);
2424BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item,
2425 compression, 8);
2426BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item,
2427 encryption, 8);
2428BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item,
2429 other_encoding, 16);
2430
2431
2432
2433
2434
2435
2436static inline u32 btrfs_file_extent_inline_item_len(
2437 const struct extent_buffer *eb,
2438 struct btrfs_item *e)
2439{
2440 return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
2441}
2442
2443
2444static inline u64 btrfs_dev_stats_value(const struct extent_buffer *eb,
2445 const struct btrfs_dev_stats_item *ptr,
2446 int index)
2447{
2448 u64 val;
2449
2450 read_extent_buffer(eb, &val,
2451 offsetof(struct btrfs_dev_stats_item, values) +
2452 ((unsigned long)ptr) + (index * sizeof(u64)),
2453 sizeof(val));
2454 return val;
2455}
2456
2457static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb,
2458 struct btrfs_dev_stats_item *ptr,
2459 int index, u64 val)
2460{
2461 write_extent_buffer(eb, &val,
2462 offsetof(struct btrfs_dev_stats_item, values) +
2463 ((unsigned long)ptr) + (index * sizeof(u64)),
2464 sizeof(val));
2465}
2466
2467
2468BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item,
2469 generation, 64);
2470BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item,
2471 version, 64);
2472BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item,
2473 flags, 64);
2474BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item,
2475 rescan, 64);
2476
2477
2478BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item,
2479 generation, 64);
2480BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64);
2481BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item,
2482 rfer_cmpr, 64);
2483BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64);
2484BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item,
2485 excl_cmpr, 64);
2486
2487BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation,
2488 struct btrfs_qgroup_info_item, generation, 64);
2489BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item,
2490 rfer, 64);
2491BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr,
2492 struct btrfs_qgroup_info_item, rfer_cmpr, 64);
2493BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item,
2494 excl, 64);
2495BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr,
2496 struct btrfs_qgroup_info_item, excl_cmpr, 64);
2497
2498
2499BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item,
2500 flags, 64);
2501BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item,
2502 max_rfer, 64);
2503BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item,
2504 max_excl, 64);
2505BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item,
2506 rsv_rfer, 64);
2507BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item,
2508 rsv_excl, 64);
2509
2510
2511BTRFS_SETGET_FUNCS(dev_replace_src_devid,
2512 struct btrfs_dev_replace_item, src_devid, 64);
2513BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode,
2514 struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode,
2515 64);
2516BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item,
2517 replace_state, 64);
2518BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item,
2519 time_started, 64);
2520BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item,
2521 time_stopped, 64);
2522BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item,
2523 num_write_errors, 64);
2524BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors,
2525 struct btrfs_dev_replace_item, num_uncorrectable_read_errors,
2526 64);
2527BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item,
2528 cursor_left, 64);
2529BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item,
2530 cursor_right, 64);
2531
2532BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid,
2533 struct btrfs_dev_replace_item, src_devid, 64);
2534BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode,
2535 struct btrfs_dev_replace_item,
2536 cont_reading_from_srcdev_mode, 64);
2537BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state,
2538 struct btrfs_dev_replace_item, replace_state, 64);
2539BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started,
2540 struct btrfs_dev_replace_item, time_started, 64);
2541BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped,
2542 struct btrfs_dev_replace_item, time_stopped, 64);
2543BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors,
2544 struct btrfs_dev_replace_item, num_write_errors, 64);
2545BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors,
2546 struct btrfs_dev_replace_item,
2547 num_uncorrectable_read_errors, 64);
2548BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left,
2549 struct btrfs_dev_replace_item, cursor_left, 64);
2550BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right,
2551 struct btrfs_dev_replace_item, cursor_right, 64);
2552
2553
2554#define btrfs_item_ptr(leaf, slot, type) \
2555 ((type *)(BTRFS_LEAF_DATA_OFFSET + \
2556 btrfs_item_offset_nr(leaf, slot)))
2557
2558#define btrfs_item_ptr_offset(leaf, slot) \
2559 ((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \
2560 btrfs_item_offset_nr(leaf, slot)))
2561
2562static inline u32 btrfs_crc32c(u32 crc, const void *address, unsigned length)
2563{
2564 return crc32c(crc, address, length);
2565}
2566
2567static inline void btrfs_crc32c_final(u32 crc, u8 *result)
2568{
2569 put_unaligned_le32(~crc, result);
2570}
2571
2572static inline u64 btrfs_name_hash(const char *name, int len)
2573{
2574 return crc32c((u32)~1, name, len);
2575}
2576
2577
2578
2579
2580static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name,
2581 int len)
2582{
2583 return (u64) crc32c(parent_objectid, name, len);
2584}
2585
2586static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping)
2587{
2588 return mapping_gfp_constraint(mapping, ~__GFP_FS);
2589}
2590
2591
2592
2593enum btrfs_inline_ref_type {
2594 BTRFS_REF_TYPE_INVALID,
2595 BTRFS_REF_TYPE_BLOCK,
2596 BTRFS_REF_TYPE_DATA,
2597 BTRFS_REF_TYPE_ANY,
2598};
2599
2600int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb,
2601 struct btrfs_extent_inline_ref *iref,
2602 enum btrfs_inline_ref_type is_data);
2603
2604u64 btrfs_csum_bytes_to_leaves(struct btrfs_fs_info *fs_info, u64 csum_bytes);
2605
2606static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_fs_info *fs_info,
2607 unsigned num_items)
2608{
2609 return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * 2 * num_items;
2610}
2611
2612
2613
2614
2615
2616static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_fs_info *fs_info,
2617 unsigned num_items)
2618{
2619 return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items;
2620}
2621
2622void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info,
2623 const u64 start);
2624void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg);
2625bool btrfs_inc_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr);
2626void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr);
2627void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg);
2628void btrfs_put_block_group(struct btrfs_block_group_cache *cache);
2629int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
2630 unsigned long count);
2631void btrfs_cleanup_ref_head_accounting(struct btrfs_fs_info *fs_info,
2632 struct btrfs_delayed_ref_root *delayed_refs,
2633 struct btrfs_delayed_ref_head *head);
2634int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len);
2635int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans,
2636 struct btrfs_fs_info *fs_info, u64 bytenr,
2637 u64 offset, int metadata, u64 *refs, u64 *flags);
2638int btrfs_pin_extent(struct btrfs_fs_info *fs_info,
2639 u64 bytenr, u64 num, int reserved);
2640int btrfs_pin_extent_for_log_replay(struct btrfs_fs_info *fs_info,
2641 u64 bytenr, u64 num_bytes);
2642int btrfs_exclude_logged_extents(struct extent_buffer *eb);
2643int btrfs_cross_ref_exist(struct btrfs_root *root,
2644 u64 objectid, u64 offset, u64 bytenr);
2645struct btrfs_block_group_cache *btrfs_lookup_block_group(
2646 struct btrfs_fs_info *info,
2647 u64 bytenr);
2648void btrfs_get_block_group(struct btrfs_block_group_cache *cache);
2649void btrfs_put_block_group(struct btrfs_block_group_cache *cache);
2650struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
2651 struct btrfs_root *root,
2652 u64 parent, u64 root_objectid,
2653 const struct btrfs_disk_key *key,
2654 int level, u64 hint,
2655 u64 empty_size);
2656void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
2657 struct btrfs_root *root,
2658 struct extent_buffer *buf,
2659 u64 parent, int last_ref);
2660int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
2661 struct btrfs_root *root, u64 owner,
2662 u64 offset, u64 ram_bytes,
2663 struct btrfs_key *ins);
2664int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
2665 u64 root_objectid, u64 owner, u64 offset,
2666 struct btrfs_key *ins);
2667int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes,
2668 u64 min_alloc_size, u64 empty_size, u64 hint_byte,
2669 struct btrfs_key *ins, int is_data, int delalloc);
2670int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2671 struct extent_buffer *buf, int full_backref);
2672int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2673 struct extent_buffer *buf, int full_backref);
2674int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans,
2675 u64 bytenr, u64 num_bytes, u64 flags,
2676 int level, int is_data);
2677int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_ref *ref);
2678
2679int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info,
2680 u64 start, u64 len, int delalloc);
2681int btrfs_free_and_pin_reserved_extent(struct btrfs_fs_info *fs_info,
2682 u64 start, u64 len);
2683void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info);
2684int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans);
2685int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
2686 struct btrfs_ref *generic_ref);
2687
2688int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans);
2689int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans);
2690int btrfs_setup_space_cache(struct btrfs_trans_handle *trans);
2691int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr);
2692int btrfs_free_block_groups(struct btrfs_fs_info *info);
2693int btrfs_read_block_groups(struct btrfs_fs_info *info);
2694int btrfs_can_relocate(struct btrfs_fs_info *fs_info, u64 bytenr);
2695int btrfs_make_block_group(struct btrfs_trans_handle *trans,
2696 u64 bytes_used, u64 type, u64 chunk_offset,
2697 u64 size);
2698struct btrfs_trans_handle *btrfs_start_trans_remove_block_group(
2699 struct btrfs_fs_info *fs_info,
2700 const u64 chunk_offset);
2701int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
2702 u64 group_start, struct extent_map *em);
2703void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info);
2704void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache);
2705void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache);
2706void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans);
2707u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info);
2708u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info);
2709u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info);
2710void btrfs_clear_space_info_full(struct btrfs_fs_info *info);
2711
2712enum btrfs_reserve_flush_enum {
2713
2714 BTRFS_RESERVE_NO_FLUSH,
2715
2716
2717
2718
2719 BTRFS_RESERVE_FLUSH_LIMIT,
2720 BTRFS_RESERVE_FLUSH_ALL,
2721};
2722
2723enum btrfs_flush_state {
2724 FLUSH_DELAYED_ITEMS_NR = 1,
2725 FLUSH_DELAYED_ITEMS = 2,
2726 FLUSH_DELAYED_REFS_NR = 3,
2727 FLUSH_DELAYED_REFS = 4,
2728 FLUSH_DELALLOC = 5,
2729 FLUSH_DELALLOC_WAIT = 6,
2730 ALLOC_CHUNK = 7,
2731 ALLOC_CHUNK_FORCE = 8,
2732 COMMIT_TRANS = 9,
2733};
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749enum btrfs_chunk_alloc_enum {
2750 CHUNK_ALLOC_NO_FORCE,
2751 CHUNK_ALLOC_LIMITED,
2752 CHUNK_ALLOC_FORCE,
2753};
2754
2755int btrfs_chunk_alloc(struct btrfs_trans_handle *trans, u64 flags,
2756 enum btrfs_chunk_alloc_enum force);
2757int btrfs_subvolume_reserve_metadata(struct btrfs_root *root,
2758 struct btrfs_block_rsv *rsv,
2759 int nitems, bool use_global_rsv);
2760void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info,
2761 struct btrfs_block_rsv *rsv);
2762void btrfs_delalloc_release_extents(struct btrfs_inode *inode, u64 num_bytes,
2763 bool qgroup_free);
2764
2765int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes);
2766int btrfs_inc_block_group_ro(struct btrfs_block_group_cache *cache);
2767void btrfs_dec_block_group_ro(struct btrfs_block_group_cache *cache);
2768void btrfs_put_block_group_cache(struct btrfs_fs_info *info);
2769u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo);
2770int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info,
2771 u64 start, u64 end);
2772int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr,
2773 u64 num_bytes, u64 *actual_bytes);
2774int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, u64 type);
2775int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range);
2776
2777int btrfs_init_space_info(struct btrfs_fs_info *fs_info);
2778int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans,
2779 struct btrfs_fs_info *fs_info);
2780int btrfs_start_write_no_snapshotting(struct btrfs_root *root);
2781void btrfs_end_write_no_snapshotting(struct btrfs_root *root);
2782void btrfs_wait_for_snapshot_creation(struct btrfs_root *root);
2783void check_system_chunk(struct btrfs_trans_handle *trans, const u64 type);
2784u64 add_new_free_space(struct btrfs_block_group_cache *block_group,
2785 u64 start, u64 end);
2786void btrfs_mark_bg_unused(struct btrfs_block_group_cache *bg);
2787
2788
2789int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key,
2790 int level, int *slot);
2791int btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2);
2792int btrfs_previous_item(struct btrfs_root *root,
2793 struct btrfs_path *path, u64 min_objectid,
2794 int type);
2795int btrfs_previous_extent_item(struct btrfs_root *root,
2796 struct btrfs_path *path, u64 min_objectid);
2797void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info,
2798 struct btrfs_path *path,
2799 const struct btrfs_key *new_key);
2800struct extent_buffer *btrfs_root_node(struct btrfs_root *root);
2801struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root);
2802struct extent_buffer *btrfs_read_lock_root_node(struct btrfs_root *root);
2803int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path,
2804 struct btrfs_key *key, int lowest_level,
2805 u64 min_trans);
2806int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key,
2807 struct btrfs_path *path,
2808 u64 min_trans);
2809enum btrfs_compare_tree_result {
2810 BTRFS_COMPARE_TREE_NEW,
2811 BTRFS_COMPARE_TREE_DELETED,
2812 BTRFS_COMPARE_TREE_CHANGED,
2813 BTRFS_COMPARE_TREE_SAME,
2814};
2815typedef int (*btrfs_changed_cb_t)(struct btrfs_path *left_path,
2816 struct btrfs_path *right_path,
2817 struct btrfs_key *key,
2818 enum btrfs_compare_tree_result result,
2819 void *ctx);
2820int btrfs_compare_trees(struct btrfs_root *left_root,
2821 struct btrfs_root *right_root,
2822 btrfs_changed_cb_t cb, void *ctx);
2823int btrfs_cow_block(struct btrfs_trans_handle *trans,
2824 struct btrfs_root *root, struct extent_buffer *buf,
2825 struct extent_buffer *parent, int parent_slot,
2826 struct extent_buffer **cow_ret);
2827int btrfs_copy_root(struct btrfs_trans_handle *trans,
2828 struct btrfs_root *root,
2829 struct extent_buffer *buf,
2830 struct extent_buffer **cow_ret, u64 new_root_objectid);
2831int btrfs_block_can_be_shared(struct btrfs_root *root,
2832 struct extent_buffer *buf);
2833void btrfs_extend_item(struct btrfs_path *path, u32 data_size);
2834void btrfs_truncate_item(struct btrfs_path *path, u32 new_size, int from_end);
2835int btrfs_split_item(struct btrfs_trans_handle *trans,
2836 struct btrfs_root *root,
2837 struct btrfs_path *path,
2838 const struct btrfs_key *new_key,
2839 unsigned long split_offset);
2840int btrfs_duplicate_item(struct btrfs_trans_handle *trans,
2841 struct btrfs_root *root,
2842 struct btrfs_path *path,
2843 const struct btrfs_key *new_key);
2844int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path,
2845 u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key);
2846int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2847 const struct btrfs_key *key, struct btrfs_path *p,
2848 int ins_len, int cow);
2849int btrfs_search_old_slot(struct btrfs_root *root, const struct btrfs_key *key,
2850 struct btrfs_path *p, u64 time_seq);
2851int btrfs_search_slot_for_read(struct btrfs_root *root,
2852 const struct btrfs_key *key,
2853 struct btrfs_path *p, int find_higher,
2854 int return_any);
2855int btrfs_realloc_node(struct btrfs_trans_handle *trans,
2856 struct btrfs_root *root, struct extent_buffer *parent,
2857 int start_slot, u64 *last_ret,
2858 struct btrfs_key *progress);
2859void btrfs_release_path(struct btrfs_path *p);
2860struct btrfs_path *btrfs_alloc_path(void);
2861void btrfs_free_path(struct btrfs_path *p);
2862void btrfs_set_path_blocking(struct btrfs_path *p);
2863void btrfs_unlock_up_safe(struct btrfs_path *p, int level);
2864
2865int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2866 struct btrfs_path *path, int slot, int nr);
2867static inline int btrfs_del_item(struct btrfs_trans_handle *trans,
2868 struct btrfs_root *root,
2869 struct btrfs_path *path)
2870{
2871 return btrfs_del_items(trans, root, path, path->slots[0], 1);
2872}
2873
2874void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path,
2875 const struct btrfs_key *cpu_key, u32 *data_size,
2876 u32 total_data, u32 total_size, int nr);
2877int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2878 const struct btrfs_key *key, void *data, u32 data_size);
2879int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
2880 struct btrfs_root *root,
2881 struct btrfs_path *path,
2882 const struct btrfs_key *cpu_key, u32 *data_size,
2883 int nr);
2884
2885static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans,
2886 struct btrfs_root *root,
2887 struct btrfs_path *path,
2888 const struct btrfs_key *key,
2889 u32 data_size)
2890{
2891 return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1);
2892}
2893
2894int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path);
2895int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path);
2896int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path,
2897 u64 time_seq);
2898static inline int btrfs_next_old_item(struct btrfs_root *root,
2899 struct btrfs_path *p, u64 time_seq)
2900{
2901 ++p->slots[0];
2902 if (p->slots[0] >= btrfs_header_nritems(p->nodes[0]))
2903 return btrfs_next_old_leaf(root, p, time_seq);
2904 return 0;
2905}
2906static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p)
2907{
2908 return btrfs_next_old_item(root, p, 0);
2909}
2910int btrfs_leaf_free_space(struct extent_buffer *leaf);
2911int __must_check btrfs_drop_snapshot(struct btrfs_root *root,
2912 struct btrfs_block_rsv *block_rsv,
2913 int update_ref, int for_reloc);
2914int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
2915 struct btrfs_root *root,
2916 struct extent_buffer *node,
2917 struct extent_buffer *parent);
2918static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info)
2919{
2920
2921
2922
2923 if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) {
2924 if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags))
2925 return 2;
2926 return 1;
2927 }
2928 return 0;
2929}
2930
2931
2932
2933
2934
2935
2936static inline int btrfs_need_cleaner_sleep(struct btrfs_fs_info *fs_info)
2937{
2938 return fs_info->sb->s_flags & SB_RDONLY || btrfs_fs_closing(fs_info);
2939}
2940
2941static inline void free_fs_info(struct btrfs_fs_info *fs_info)
2942{
2943 kfree(fs_info->balance_ctl);
2944 kfree(fs_info->delayed_root);
2945 kfree(fs_info->extent_root);
2946 kfree(fs_info->tree_root);
2947 kfree(fs_info->chunk_root);
2948 kfree(fs_info->dev_root);
2949 kfree(fs_info->csum_root);
2950 kfree(fs_info->quota_root);
2951 kfree(fs_info->uuid_root);
2952 kfree(fs_info->free_space_root);
2953 kfree(fs_info->super_copy);
2954 kfree(fs_info->super_for_commit);
2955 kvfree(fs_info);
2956}
2957
2958
2959u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info,
2960 struct seq_list *elem);
2961void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info,
2962 struct seq_list *elem);
2963int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq);
2964
2965
2966int btrfs_add_root_ref(struct btrfs_trans_handle *trans, u64 root_id,
2967 u64 ref_id, u64 dirid, u64 sequence, const char *name,
2968 int name_len);
2969int btrfs_del_root_ref(struct btrfs_trans_handle *trans, u64 root_id,
2970 u64 ref_id, u64 dirid, u64 *sequence, const char *name,
2971 int name_len);
2972int btrfs_del_root(struct btrfs_trans_handle *trans,
2973 const struct btrfs_key *key);
2974int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
2975 const struct btrfs_key *key,
2976 struct btrfs_root_item *item);
2977int __must_check btrfs_update_root(struct btrfs_trans_handle *trans,
2978 struct btrfs_root *root,
2979 struct btrfs_key *key,
2980 struct btrfs_root_item *item);
2981int btrfs_find_root(struct btrfs_root *root, const struct btrfs_key *search_key,
2982 struct btrfs_path *path, struct btrfs_root_item *root_item,
2983 struct btrfs_key *root_key);
2984int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info);
2985void btrfs_set_root_node(struct btrfs_root_item *item,
2986 struct extent_buffer *node);
2987void btrfs_check_and_init_root_item(struct btrfs_root_item *item);
2988void btrfs_update_root_times(struct btrfs_trans_handle *trans,
2989 struct btrfs_root *root);
2990
2991
2992int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, u8 *uuid, u8 type,
2993 u64 subid);
2994int btrfs_uuid_tree_remove(struct btrfs_trans_handle *trans, u8 *uuid, u8 type,
2995 u64 subid);
2996int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info,
2997 int (*check_func)(struct btrfs_fs_info *, u8 *, u8,
2998 u64));
2999
3000
3001int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir,
3002 const char *name, int name_len);
3003int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, const char *name,
3004 int name_len, struct btrfs_inode *dir,
3005 struct btrfs_key *location, u8 type, u64 index);
3006struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
3007 struct btrfs_root *root,
3008 struct btrfs_path *path, u64 dir,
3009 const char *name, int name_len,
3010 int mod);
3011struct btrfs_dir_item *
3012btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans,
3013 struct btrfs_root *root,
3014 struct btrfs_path *path, u64 dir,
3015 u64 objectid, const char *name, int name_len,
3016 int mod);
3017struct btrfs_dir_item *
3018btrfs_search_dir_index_item(struct btrfs_root *root,
3019 struct btrfs_path *path, u64 dirid,
3020 const char *name, int name_len);
3021int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
3022 struct btrfs_root *root,
3023 struct btrfs_path *path,
3024 struct btrfs_dir_item *di);
3025int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
3026 struct btrfs_root *root,
3027 struct btrfs_path *path, u64 objectid,
3028 const char *name, u16 name_len,
3029 const void *data, u16 data_len);
3030struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
3031 struct btrfs_root *root,
3032 struct btrfs_path *path, u64 dir,
3033 const char *name, u16 name_len,
3034 int mod);
3035struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info,
3036 struct btrfs_path *path,
3037 const char *name,
3038 int name_len);
3039
3040
3041int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
3042 struct btrfs_root *root, u64 offset);
3043int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
3044 struct btrfs_root *root, u64 offset);
3045int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset);
3046
3047
3048int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
3049 struct btrfs_root *root,
3050 const char *name, int name_len,
3051 u64 inode_objectid, u64 ref_objectid, u64 index);
3052int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
3053 struct btrfs_root *root,
3054 const char *name, int name_len,
3055 u64 inode_objectid, u64 ref_objectid, u64 *index);
3056int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
3057 struct btrfs_root *root,
3058 struct btrfs_path *path, u64 objectid);
3059int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
3060 *root, struct btrfs_path *path,
3061 struct btrfs_key *location, int mod);
3062
3063struct btrfs_inode_extref *
3064btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans,
3065 struct btrfs_root *root,
3066 struct btrfs_path *path,
3067 const char *name, int name_len,
3068 u64 inode_objectid, u64 ref_objectid, int ins_len,
3069 int cow);
3070
3071int btrfs_find_name_in_backref(struct extent_buffer *leaf, int slot,
3072 const char *name,
3073 int name_len, struct btrfs_inode_ref **ref_ret);
3074int btrfs_find_name_in_ext_backref(struct extent_buffer *leaf, int slot,
3075 u64 ref_objectid, const char *name,
3076 int name_len,
3077 struct btrfs_inode_extref **extref_ret);
3078
3079
3080struct btrfs_dio_private;
3081int btrfs_del_csums(struct btrfs_trans_handle *trans,
3082 struct btrfs_fs_info *fs_info, u64 bytenr, u64 len);
3083blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio,
3084 u8 *dst);
3085blk_status_t btrfs_lookup_bio_sums_dio(struct inode *inode, struct bio *bio,
3086 u64 logical_offset);
3087int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
3088 struct btrfs_root *root,
3089 u64 objectid, u64 pos,
3090 u64 disk_offset, u64 disk_num_bytes,
3091 u64 num_bytes, u64 offset, u64 ram_bytes,
3092 u8 compression, u8 encryption, u16 other_encoding);
3093int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
3094 struct btrfs_root *root,
3095 struct btrfs_path *path, u64 objectid,
3096 u64 bytenr, int mod);
3097int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
3098 struct btrfs_root *root,
3099 struct btrfs_ordered_sum *sums);
3100blk_status_t btrfs_csum_one_bio(struct inode *inode, struct bio *bio,
3101 u64 file_start, int contig);
3102int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
3103 struct list_head *list, int search_commit);
3104void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode,
3105 const struct btrfs_path *path,
3106 struct btrfs_file_extent_item *fi,
3107 const bool new_inline,
3108 struct extent_map *em);
3109
3110
3111struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode,
3112 u64 start, u64 len);
3113noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
3114 u64 *orig_start, u64 *orig_block_len,
3115 u64 *ram_bytes);
3116
3117void __btrfs_del_delalloc_inode(struct btrfs_root *root,
3118 struct btrfs_inode *inode);
3119struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry);
3120int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index);
3121int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
3122 struct btrfs_root *root,
3123 struct btrfs_inode *dir, struct btrfs_inode *inode,
3124 const char *name, int name_len);
3125int btrfs_add_link(struct btrfs_trans_handle *trans,
3126 struct btrfs_inode *parent_inode, struct btrfs_inode *inode,
3127 const char *name, int name_len, int add_backref, u64 index);
3128int btrfs_delete_subvolume(struct inode *dir, struct dentry *dentry);
3129int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len,
3130 int front);
3131int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
3132 struct btrfs_root *root,
3133 struct inode *inode, u64 new_size,
3134 u32 min_type);
3135
3136int btrfs_start_delalloc_snapshot(struct btrfs_root *root);
3137int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int nr);
3138int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end,
3139 unsigned int extra_bits,
3140 struct extent_state **cached_state, int dedupe);
3141int btrfs_create_subvol_root(struct btrfs_trans_handle *trans,
3142 struct btrfs_root *new_root,
3143 struct btrfs_root *parent_root,
3144 u64 new_dirid);
3145 void btrfs_set_delalloc_extent(struct inode *inode, struct extent_state *state,
3146 unsigned *bits);
3147void btrfs_clear_delalloc_extent(struct inode *inode,
3148 struct extent_state *state, unsigned *bits);
3149void btrfs_merge_delalloc_extent(struct inode *inode, struct extent_state *new,
3150 struct extent_state *other);
3151void btrfs_split_delalloc_extent(struct inode *inode,
3152 struct extent_state *orig, u64 split);
3153int btrfs_bio_fits_in_stripe(struct page *page, size_t size, struct bio *bio,
3154 unsigned long bio_flags);
3155void btrfs_set_range_writeback(struct extent_io_tree *tree, u64 start, u64 end);
3156vm_fault_t btrfs_page_mkwrite(struct vm_fault *vmf);
3157int btrfs_readpage(struct file *file, struct page *page);
3158void btrfs_evict_inode(struct inode *inode);
3159int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc);
3160struct inode *btrfs_alloc_inode(struct super_block *sb);
3161void btrfs_destroy_inode(struct inode *inode);
3162void btrfs_free_inode(struct inode *inode);
3163int btrfs_drop_inode(struct inode *inode);
3164int __init btrfs_init_cachep(void);
3165void __cold btrfs_destroy_cachep(void);
3166struct inode *btrfs_iget_path(struct super_block *s, struct btrfs_key *location,
3167 struct btrfs_root *root, int *new,
3168 struct btrfs_path *path);
3169struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
3170 struct btrfs_root *root, int *was_new);
3171struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
3172 struct page *page, size_t pg_offset,
3173 u64 start, u64 end, int create);
3174int btrfs_update_inode(struct btrfs_trans_handle *trans,
3175 struct btrfs_root *root,
3176 struct inode *inode);
3177int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans,
3178 struct btrfs_root *root, struct inode *inode);
3179int btrfs_orphan_add(struct btrfs_trans_handle *trans,
3180 struct btrfs_inode *inode);
3181int btrfs_orphan_cleanup(struct btrfs_root *root);
3182int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size);
3183void btrfs_add_delayed_iput(struct inode *inode);
3184void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info);
3185int btrfs_wait_on_delayed_iputs(struct btrfs_fs_info *fs_info);
3186int btrfs_prealloc_file_range(struct inode *inode, int mode,
3187 u64 start, u64 num_bytes, u64 min_size,
3188 loff_t actual_len, u64 *alloc_hint);
3189int btrfs_prealloc_file_range_trans(struct inode *inode,
3190 struct btrfs_trans_handle *trans, int mode,
3191 u64 start, u64 num_bytes, u64 min_size,
3192 loff_t actual_len, u64 *alloc_hint);
3193int btrfs_run_delalloc_range(struct inode *inode, struct page *locked_page,
3194 u64 start, u64 end, int *page_started, unsigned long *nr_written,
3195 struct writeback_control *wbc);
3196int btrfs_writepage_cow_fixup(struct page *page, u64 start, u64 end);
3197void btrfs_writepage_endio_finish_ordered(struct page *page, u64 start,
3198 u64 end, int uptodate);
3199extern const struct dentry_operations btrfs_dentry_operations;
3200
3201
3202long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
3203long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
3204int btrfs_ioctl_get_supported_features(void __user *arg);
3205void btrfs_sync_inode_flags_to_i_flags(struct inode *inode);
3206int btrfs_is_empty_uuid(u8 *uuid);
3207int btrfs_defrag_file(struct inode *inode, struct file *file,
3208 struct btrfs_ioctl_defrag_range_args *range,
3209 u64 newer_than, unsigned long max_pages);
3210void btrfs_get_block_group_info(struct list_head *groups_list,
3211 struct btrfs_ioctl_space_info *space);
3212void btrfs_update_ioctl_balance_args(struct btrfs_fs_info *fs_info,
3213 struct btrfs_ioctl_balance_args *bargs);
3214
3215
3216int __init btrfs_auto_defrag_init(void);
3217void __cold btrfs_auto_defrag_exit(void);
3218int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans,
3219 struct btrfs_inode *inode);
3220int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info);
3221void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info);
3222int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
3223void btrfs_drop_extent_cache(struct btrfs_inode *inode, u64 start, u64 end,
3224 int skip_pinned);
3225extern const struct file_operations btrfs_file_operations;
3226int __btrfs_drop_extents(struct btrfs_trans_handle *trans,
3227 struct btrfs_root *root, struct inode *inode,
3228 struct btrfs_path *path, u64 start, u64 end,
3229 u64 *drop_end, int drop_cache,
3230 int replace_extent,
3231 u32 extent_item_size,
3232 int *key_inserted);
3233int btrfs_drop_extents(struct btrfs_trans_handle *trans,
3234 struct btrfs_root *root, struct inode *inode, u64 start,
3235 u64 end, int drop_cache);
3236int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
3237 struct btrfs_inode *inode, u64 start, u64 end);
3238int btrfs_release_file(struct inode *inode, struct file *file);
3239int btrfs_dirty_pages(struct inode *inode, struct page **pages,
3240 size_t num_pages, loff_t pos, size_t write_bytes,
3241 struct extent_state **cached);
3242int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end);
3243loff_t btrfs_remap_file_range(struct file *file_in, loff_t pos_in,
3244 struct file *file_out, loff_t pos_out,
3245 loff_t len, unsigned int remap_flags);
3246
3247
3248int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
3249 struct btrfs_root *root);
3250
3251
3252int __init btrfs_init_sysfs(void);
3253void __cold btrfs_exit_sysfs(void);
3254int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info);
3255void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info);
3256
3257
3258int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
3259 unsigned long new_flags);
3260int btrfs_sync_fs(struct super_block *sb, int wait);
3261
3262static inline __printf(2, 3) __cold
3263void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...)
3264{
3265}
3266
3267#ifdef CONFIG_PRINTK
3268__printf(2, 3)
3269__cold
3270void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...);
3271#else
3272#define btrfs_printk(fs_info, fmt, args...) \
3273 btrfs_no_printk(fs_info, fmt, ##args)
3274#endif
3275
3276#define btrfs_emerg(fs_info, fmt, args...) \
3277 btrfs_printk(fs_info, KERN_EMERG fmt, ##args)
3278#define btrfs_alert(fs_info, fmt, args...) \
3279 btrfs_printk(fs_info, KERN_ALERT fmt, ##args)
3280#define btrfs_crit(fs_info, fmt, args...) \
3281 btrfs_printk(fs_info, KERN_CRIT fmt, ##args)
3282#define btrfs_err(fs_info, fmt, args...) \
3283 btrfs_printk(fs_info, KERN_ERR fmt, ##args)
3284#define btrfs_warn(fs_info, fmt, args...) \
3285 btrfs_printk(fs_info, KERN_WARNING fmt, ##args)
3286#define btrfs_notice(fs_info, fmt, args...) \
3287 btrfs_printk(fs_info, KERN_NOTICE fmt, ##args)
3288#define btrfs_info(fs_info, fmt, args...) \
3289 btrfs_printk(fs_info, KERN_INFO fmt, ##args)
3290
3291
3292
3293
3294#define btrfs_emerg_in_rcu(fs_info, fmt, args...) \
3295 btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args)
3296#define btrfs_alert_in_rcu(fs_info, fmt, args...) \
3297 btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args)
3298#define btrfs_crit_in_rcu(fs_info, fmt, args...) \
3299 btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args)
3300#define btrfs_err_in_rcu(fs_info, fmt, args...) \
3301 btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args)
3302#define btrfs_warn_in_rcu(fs_info, fmt, args...) \
3303 btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args)
3304#define btrfs_notice_in_rcu(fs_info, fmt, args...) \
3305 btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args)
3306#define btrfs_info_in_rcu(fs_info, fmt, args...) \
3307 btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args)
3308
3309
3310
3311
3312#define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \
3313 btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args)
3314#define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \
3315 btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args)
3316#define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \
3317 btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args)
3318#define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \
3319 btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args)
3320#define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \
3321 btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args)
3322#define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \
3323 btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args)
3324#define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \
3325 btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args)
3326
3327
3328
3329
3330#define btrfs_emerg_rl(fs_info, fmt, args...) \
3331 btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args)
3332#define btrfs_alert_rl(fs_info, fmt, args...) \
3333 btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args)
3334#define btrfs_crit_rl(fs_info, fmt, args...) \
3335 btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args)
3336#define btrfs_err_rl(fs_info, fmt, args...) \
3337 btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args)
3338#define btrfs_warn_rl(fs_info, fmt, args...) \
3339 btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args)
3340#define btrfs_notice_rl(fs_info, fmt, args...) \
3341 btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args)
3342#define btrfs_info_rl(fs_info, fmt, args...) \
3343 btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args)
3344
3345#if defined(CONFIG_DYNAMIC_DEBUG)
3346#define btrfs_debug(fs_info, fmt, args...) \
3347 _dynamic_func_call_no_desc(fmt, btrfs_printk, \
3348 fs_info, KERN_DEBUG fmt, ##args)
3349#define btrfs_debug_in_rcu(fs_info, fmt, args...) \
3350 _dynamic_func_call_no_desc(fmt, btrfs_printk_in_rcu, \
3351 fs_info, KERN_DEBUG fmt, ##args)
3352#define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \
3353 _dynamic_func_call_no_desc(fmt, btrfs_printk_rl_in_rcu, \
3354 fs_info, KERN_DEBUG fmt, ##args)
3355#define btrfs_debug_rl(fs_info, fmt, args...) \
3356 _dynamic_func_call_no_desc(fmt, btrfs_printk_ratelimited, \
3357 fs_info, KERN_DEBUG fmt, ##args)
3358#elif defined(DEBUG)
3359#define btrfs_debug(fs_info, fmt, args...) \
3360 btrfs_printk(fs_info, KERN_DEBUG fmt, ##args)
3361#define btrfs_debug_in_rcu(fs_info, fmt, args...) \
3362 btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
3363#define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \
3364 btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
3365#define btrfs_debug_rl(fs_info, fmt, args...) \
3366 btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args)
3367#else
3368#define btrfs_debug(fs_info, fmt, args...) \
3369 btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args)
3370#define btrfs_debug_in_rcu(fs_info, fmt, args...) \
3371 btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
3372#define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \
3373 btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
3374#define btrfs_debug_rl(fs_info, fmt, args...) \
3375 btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args)
3376#endif
3377
3378#define btrfs_printk_in_rcu(fs_info, fmt, args...) \
3379do { \
3380 rcu_read_lock(); \
3381 btrfs_printk(fs_info, fmt, ##args); \
3382 rcu_read_unlock(); \
3383} while (0)
3384
3385#define btrfs_no_printk_in_rcu(fs_info, fmt, args...) \
3386do { \
3387 rcu_read_lock(); \
3388 btrfs_no_printk(fs_info, fmt, ##args); \
3389 rcu_read_unlock(); \
3390} while (0)
3391
3392#define btrfs_printk_ratelimited(fs_info, fmt, args...) \
3393do { \
3394 static DEFINE_RATELIMIT_STATE(_rs, \
3395 DEFAULT_RATELIMIT_INTERVAL, \
3396 DEFAULT_RATELIMIT_BURST); \
3397 if (__ratelimit(&_rs)) \
3398 btrfs_printk(fs_info, fmt, ##args); \
3399} while (0)
3400
3401#define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \
3402do { \
3403 rcu_read_lock(); \
3404 btrfs_printk_ratelimited(fs_info, fmt, ##args); \
3405 rcu_read_unlock(); \
3406} while (0)
3407
3408__cold
3409static inline void assfail(const char *expr, const char *file, int line)
3410{
3411 if (IS_ENABLED(CONFIG_BTRFS_ASSERT)) {
3412 pr_err("assertion failed: %s, in %s:%d\n", expr, file, line);
3413 BUG();
3414 }
3415}
3416
3417#define ASSERT(expr) \
3418 (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
3419
3420
3421
3422
3423
3424#ifndef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
3425#define EXPORT_FOR_TESTS static
3426#else
3427#define EXPORT_FOR_TESTS
3428#endif
3429
3430__cold
3431static inline void btrfs_print_v0_err(struct btrfs_fs_info *fs_info)
3432{
3433 btrfs_err(fs_info,
3434"Unsupported V0 extent filesystem detected. Aborting. Please re-create your filesystem with a newer kernel");
3435}
3436
3437__printf(5, 6)
3438__cold
3439void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function,
3440 unsigned int line, int errno, const char *fmt, ...);
3441
3442const char *btrfs_decode_error(int errno);
3443
3444__cold
3445void __btrfs_abort_transaction(struct btrfs_trans_handle *trans,
3446 const char *function,
3447 unsigned int line, int errno);
3448
3449
3450
3451
3452
3453#define btrfs_abort_transaction(trans, errno) \
3454do { \
3455 \
3456 if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \
3457 &((trans)->fs_info->fs_state))) { \
3458 if ((errno) != -EIO) { \
3459 WARN(1, KERN_DEBUG \
3460 "BTRFS: Transaction aborted (error %d)\n", \
3461 (errno)); \
3462 } else { \
3463 btrfs_debug((trans)->fs_info, \
3464 "Transaction aborted (error %d)", \
3465 (errno)); \
3466 } \
3467 } \
3468 __btrfs_abort_transaction((trans), __func__, \
3469 __LINE__, (errno)); \
3470} while (0)
3471
3472#define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \
3473do { \
3474 __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \
3475 (errno), fmt, ##args); \
3476} while (0)
3477
3478__printf(5, 6)
3479__cold
3480void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function,
3481 unsigned int line, int errno, const char *fmt, ...);
3482
3483
3484
3485
3486#define btrfs_panic(fs_info, errno, fmt, args...) \
3487do { \
3488 __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \
3489 BUG(); \
3490} while (0)
3491
3492
3493
3494
3495#define btrfs_set_fs_incompat(__fs_info, opt) \
3496 __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt, \
3497 #opt)
3498
3499static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info,
3500 u64 flag, const char* name)
3501{
3502 struct btrfs_super_block *disk_super;
3503 u64 features;
3504
3505 disk_super = fs_info->super_copy;
3506 features = btrfs_super_incompat_flags(disk_super);
3507 if (!(features & flag)) {
3508 spin_lock(&fs_info->super_lock);
3509 features = btrfs_super_incompat_flags(disk_super);
3510 if (!(features & flag)) {
3511 features |= flag;
3512 btrfs_set_super_incompat_flags(disk_super, features);
3513 btrfs_info(fs_info,
3514 "setting incompat feature flag for %s (0x%llx)",
3515 name, flag);
3516 }
3517 spin_unlock(&fs_info->super_lock);
3518 }
3519}
3520
3521#define btrfs_clear_fs_incompat(__fs_info, opt) \
3522 __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt, \
3523 #opt)
3524
3525static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info,
3526 u64 flag, const char* name)
3527{
3528 struct btrfs_super_block *disk_super;
3529 u64 features;
3530
3531 disk_super = fs_info->super_copy;
3532 features = btrfs_super_incompat_flags(disk_super);
3533 if (features & flag) {
3534 spin_lock(&fs_info->super_lock);
3535 features = btrfs_super_incompat_flags(disk_super);
3536 if (features & flag) {
3537 features &= ~flag;
3538 btrfs_set_super_incompat_flags(disk_super, features);
3539 btrfs_info(fs_info,
3540 "clearing incompat feature flag for %s (0x%llx)",
3541 name, flag);
3542 }
3543 spin_unlock(&fs_info->super_lock);
3544 }
3545}
3546
3547#define btrfs_fs_incompat(fs_info, opt) \
3548 __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt)
3549
3550static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag)
3551{
3552 struct btrfs_super_block *disk_super;
3553 disk_super = fs_info->super_copy;
3554 return !!(btrfs_super_incompat_flags(disk_super) & flag);
3555}
3556
3557#define btrfs_set_fs_compat_ro(__fs_info, opt) \
3558 __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt, \
3559 #opt)
3560
3561static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info,
3562 u64 flag, const char *name)
3563{
3564 struct btrfs_super_block *disk_super;
3565 u64 features;
3566
3567 disk_super = fs_info->super_copy;
3568 features = btrfs_super_compat_ro_flags(disk_super);
3569 if (!(features & flag)) {
3570 spin_lock(&fs_info->super_lock);
3571 features = btrfs_super_compat_ro_flags(disk_super);
3572 if (!(features & flag)) {
3573 features |= flag;
3574 btrfs_set_super_compat_ro_flags(disk_super, features);
3575 btrfs_info(fs_info,
3576 "setting compat-ro feature flag for %s (0x%llx)",
3577 name, flag);
3578 }
3579 spin_unlock(&fs_info->super_lock);
3580 }
3581}
3582
3583#define btrfs_clear_fs_compat_ro(__fs_info, opt) \
3584 __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt, \
3585 #opt)
3586
3587static inline void __btrfs_clear_fs_compat_ro(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_compat_ro_flags(disk_super);
3595 if (features & flag) {
3596 spin_lock(&fs_info->super_lock);
3597 features = btrfs_super_compat_ro_flags(disk_super);
3598 if (features & flag) {
3599 features &= ~flag;
3600 btrfs_set_super_compat_ro_flags(disk_super, features);
3601 btrfs_info(fs_info,
3602 "clearing compat-ro feature flag for %s (0x%llx)",
3603 name, flag);
3604 }
3605 spin_unlock(&fs_info->super_lock);
3606 }
3607}
3608
3609#define btrfs_fs_compat_ro(fs_info, opt) \
3610 __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt)
3611
3612static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag)
3613{
3614 struct btrfs_super_block *disk_super;
3615 disk_super = fs_info->super_copy;
3616 return !!(btrfs_super_compat_ro_flags(disk_super) & flag);
3617}
3618
3619
3620#ifdef CONFIG_BTRFS_FS_POSIX_ACL
3621struct posix_acl *btrfs_get_acl(struct inode *inode, int type);
3622int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type);
3623int btrfs_init_acl(struct btrfs_trans_handle *trans,
3624 struct inode *inode, struct inode *dir);
3625#else
3626#define btrfs_get_acl NULL
3627#define btrfs_set_acl NULL
3628static inline int btrfs_init_acl(struct btrfs_trans_handle *trans,
3629 struct inode *inode, struct inode *dir)
3630{
3631 return 0;
3632}
3633#endif
3634
3635
3636int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start);
3637int btrfs_init_reloc_root(struct btrfs_trans_handle *trans,
3638 struct btrfs_root *root);
3639int btrfs_update_reloc_root(struct btrfs_trans_handle *trans,
3640 struct btrfs_root *root);
3641int btrfs_recover_relocation(struct btrfs_root *root);
3642int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len);
3643int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans,
3644 struct btrfs_root *root, struct extent_buffer *buf,
3645 struct extent_buffer *cow);
3646void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending,
3647 u64 *bytes_to_reserve);
3648int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
3649 struct btrfs_pending_snapshot *pending);
3650
3651
3652int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start,
3653 u64 end, struct btrfs_scrub_progress *progress,
3654 int readonly, int is_dev_replace);
3655void btrfs_scrub_pause(struct btrfs_fs_info *fs_info);
3656void btrfs_scrub_continue(struct btrfs_fs_info *fs_info);
3657int btrfs_scrub_cancel(struct btrfs_fs_info *info);
3658int btrfs_scrub_cancel_dev(struct btrfs_device *dev);
3659int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid,
3660 struct btrfs_scrub_progress *progress);
3661static inline void btrfs_init_full_stripe_locks_tree(
3662 struct btrfs_full_stripe_locks_tree *locks_root)
3663{
3664 locks_root->root = RB_ROOT;
3665 mutex_init(&locks_root->lock);
3666}
3667
3668
3669void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info);
3670void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info);
3671void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount);
3672
3673static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info)
3674{
3675 btrfs_bio_counter_sub(fs_info, 1);
3676}
3677
3678
3679struct reada_control {
3680 struct btrfs_fs_info *fs_info;
3681 struct btrfs_key key_start;
3682 struct btrfs_key key_end;
3683 atomic_t elems;
3684 struct kref refcnt;
3685 wait_queue_head_t wait;
3686};
3687struct reada_control *btrfs_reada_add(struct btrfs_root *root,
3688 struct btrfs_key *start, struct btrfs_key *end);
3689int btrfs_reada_wait(void *handle);
3690void btrfs_reada_detach(void *handle);
3691int btree_readahead_hook(struct extent_buffer *eb, int err);
3692
3693static inline int is_fstree(u64 rootid)
3694{
3695 if (rootid == BTRFS_FS_TREE_OBJECTID ||
3696 ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID &&
3697 !btrfs_qgroup_level(rootid)))
3698 return 1;
3699 return 0;
3700}
3701
3702static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info)
3703{
3704 return signal_pending(current);
3705}
3706
3707#define in_range(b, first, len) ((b) >= (first) && (b) < (first) + (len))
3708
3709
3710#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
3711void btrfs_test_inode_set_ops(struct inode *inode);
3712void btrfs_test_destroy_inode(struct inode *inode);
3713
3714static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info)
3715{
3716 return test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state);
3717}
3718#else
3719static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info)
3720{
3721 return 0;
3722}
3723#endif
3724
3725static inline void cond_wake_up(struct wait_queue_head *wq)
3726{
3727
3728
3729
3730
3731 if (wq_has_sleeper(wq))
3732 wake_up(wq);
3733}
3734
3735static inline void cond_wake_up_nomb(struct wait_queue_head *wq)
3736{
3737
3738
3739
3740
3741
3742
3743 if (waitqueue_active(wq))
3744 wake_up(wq);
3745}
3746
3747#endif
3748