2 * Copyright (C) 2007 Oracle. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
19 #ifndef __BTRFS_CTREE__
20 #define __BTRFS_CTREE__
22 #include <linux/version.h>
24 #include <linux/highmem.h>
26 #include <linux/completion.h>
27 #include <linux/backing-dev.h>
28 #include <linux/wait.h>
29 #include <asm/kmap_types.h>
30 #include "bit-radix.h"
31 #include "extent_io.h"
32 #include "extent_map.h"
33 #include "async-thread.h"
35 struct btrfs_trans_handle
;
36 struct btrfs_transaction
;
37 extern struct kmem_cache
*btrfs_trans_handle_cachep
;
38 extern struct kmem_cache
*btrfs_transaction_cachep
;
39 extern struct kmem_cache
*btrfs_bit_radix_cachep
;
40 extern struct kmem_cache
*btrfs_path_cachep
;
41 struct btrfs_ordered_sum
;
43 #define BTRFS_MAGIC "_B8RfS_M"
45 #define BTRFS_ACL_NOT_CACHED ((void *)-1)
48 # define BTRFS_MAX_LEVEL 7
50 # define BTRFS_MAX_LEVEL 8
53 /* holds pointers to all of the tree roots */
54 #define BTRFS_ROOT_TREE_OBJECTID 1ULL
56 /* stores information about which extents are in use, and reference counts */
57 #define BTRFS_EXTENT_TREE_OBJECTID 2ULL
60 * chunk tree stores translations from logical -> physical block numbering
61 * the super block points to the chunk tree
63 #define BTRFS_CHUNK_TREE_OBJECTID 3ULL
66 * stores information about which areas of a given device are in use.
67 * one per device. The tree of tree roots points to the device tree
69 #define BTRFS_DEV_TREE_OBJECTID 4ULL
71 /* one per subvolume, storing files and directories */
72 #define BTRFS_FS_TREE_OBJECTID 5ULL
74 /* directory objectid inside the root tree */
75 #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL
77 /* orhpan objectid for tracking unlinked/truncated files */
78 #define BTRFS_ORPHAN_OBJECTID -5ULL
80 /* does write ahead logging to speed up fsyncs */
81 #define BTRFS_TREE_LOG_OBJECTID -6ULL
82 #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL
85 * All files have objectids in this range.
87 #define BTRFS_FIRST_FREE_OBJECTID 256ULL
88 #define BTRFS_LAST_FREE_OBJECTID -256ULL
89 #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL
93 * the device items go into the chunk tree. The key is in the form
94 * [ 1 BTRFS_DEV_ITEM_KEY device_id ]
96 #define BTRFS_DEV_ITEMS_OBJECTID 1ULL
99 * we can actually store much bigger names, but lets not confuse the rest
102 #define BTRFS_NAME_LEN 255
104 /* 32 bytes in various csum fields */
105 #define BTRFS_CSUM_SIZE 32
106 /* four bytes for CRC32 */
107 #define BTRFS_CRC32_SIZE 4
108 #define BTRFS_EMPTY_DIR_SIZE 0
110 #define BTRFS_FT_UNKNOWN 0
111 #define BTRFS_FT_REG_FILE 1
112 #define BTRFS_FT_DIR 2
113 #define BTRFS_FT_CHRDEV 3
114 #define BTRFS_FT_BLKDEV 4
115 #define BTRFS_FT_FIFO 5
116 #define BTRFS_FT_SOCK 6
117 #define BTRFS_FT_SYMLINK 7
118 #define BTRFS_FT_XATTR 8
119 #define BTRFS_FT_MAX 9
122 * the key defines the order in the tree, and so it also defines (optimal)
123 * block layout. objectid corresonds to the inode number. The flags
124 * tells us things about the object, and is a kind of stream selector.
125 * so for a given inode, keys with flags of 1 might refer to the inode
126 * data, flags of 2 may point to file data in the btree and flags == 3
127 * may point to extents.
129 * offset is the starting byte offset for this key in the stream.
131 * btrfs_disk_key is in disk byte order. struct btrfs_key is always
132 * in cpu native order. Otherwise they are identical and their sizes
133 * should be the same (ie both packed)
135 struct btrfs_disk_key
{
139 } __attribute__ ((__packed__
));
145 } __attribute__ ((__packed__
));
147 struct btrfs_mapping_tree
{
148 struct extent_map_tree map_tree
;
151 #define BTRFS_UUID_SIZE 16
152 struct btrfs_dev_item
{
153 /* the internal btrfs device id */
156 /* size of the device */
162 /* optimal io alignment for this device */
165 /* optimal io width for this device */
168 /* minimal io size for this device */
171 /* type and info about this device */
174 /* grouping information for allocation decisions */
177 /* seek speed 0-100 where 100 is fastest */
180 /* bandwidth 0-100 where 100 is fastest */
183 /* btrfs generated uuid for this device */
184 u8 uuid
[BTRFS_UUID_SIZE
];
185 } __attribute__ ((__packed__
));
187 struct btrfs_stripe
{
190 u8 dev_uuid
[BTRFS_UUID_SIZE
];
191 } __attribute__ ((__packed__
));
194 /* size of this chunk in bytes */
197 /* objectid of the root referencing this chunk */
203 /* optimal io alignment for this chunk */
206 /* optimal io width for this chunk */
209 /* minimal io size for this chunk */
212 /* 2^16 stripes is quite a lot, a second limit is the size of a single
217 /* sub stripes only matter for raid10 */
219 struct btrfs_stripe stripe
;
220 /* additional stripes go here */
221 } __attribute__ ((__packed__
));
223 static inline unsigned long btrfs_chunk_item_size(int num_stripes
)
225 BUG_ON(num_stripes
== 0);
226 return sizeof(struct btrfs_chunk
) +
227 sizeof(struct btrfs_stripe
) * (num_stripes
- 1);
230 #define BTRFS_FSID_SIZE 16
231 #define BTRFS_HEADER_FLAG_WRITTEN (1 << 0)
234 * every tree block (leaf or node) starts with this header.
236 struct btrfs_header
{
237 /* these first four must match the super block */
238 u8 csum
[BTRFS_CSUM_SIZE
];
239 u8 fsid
[BTRFS_FSID_SIZE
]; /* FS specific uuid */
240 __le64 bytenr
; /* which block this node is supposed to live in */
243 /* allowed to be different from the super from here on down */
244 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
249 } __attribute__ ((__packed__
));
251 #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \
252 sizeof(struct btrfs_header)) / \
253 sizeof(struct btrfs_key_ptr))
254 #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header))
255 #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize))
256 #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \
257 sizeof(struct btrfs_item) - \
258 sizeof(struct btrfs_file_extent_item))
262 * this is a very generous portion of the super block, giving us
263 * room to translate 14 chunks with 3 stripes each.
265 #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048
266 #define BTRFS_LABEL_SIZE 256
269 * the super block basically lists the main trees of the FS
270 * it currently lacks any block count etc etc
272 struct btrfs_super_block
{
273 u8 csum
[BTRFS_CSUM_SIZE
];
274 /* the first 4 fields must match struct btrfs_header */
275 u8 fsid
[16]; /* FS specific uuid */
276 __le64 bytenr
; /* this block number */
279 /* allowed to be different from the btrfs_header from here own down */
287 __le64 root_dir_objectid
;
293 __le32 sys_chunk_array_size
;
297 struct btrfs_dev_item dev_item
;
298 char label
[BTRFS_LABEL_SIZE
];
299 u8 sys_chunk_array
[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE
];
300 } __attribute__ ((__packed__
));
303 * A leaf is full of items. offset and size tell us where to find
304 * the item in the leaf (relative to the start of the data area)
307 struct btrfs_disk_key key
;
310 } __attribute__ ((__packed__
));
313 * leaves have an item area and a data area:
314 * [item0, item1....itemN] [free space] [dataN...data1, data0]
316 * The data is separate from the items to get the keys closer together
320 struct btrfs_header header
;
321 struct btrfs_item items
[];
322 } __attribute__ ((__packed__
));
325 * all non-leaf blocks are nodes, they hold only keys and pointers to
328 struct btrfs_key_ptr
{
329 struct btrfs_disk_key key
;
332 } __attribute__ ((__packed__
));
335 struct btrfs_header header
;
336 struct btrfs_key_ptr ptrs
[];
337 } __attribute__ ((__packed__
));
340 * btrfs_paths remember the path taken from the root down to the leaf.
341 * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point
342 * to any other levels that are present.
344 * The slots array records the index of the item or block pointer
345 * used while walking the tree.
348 struct extent_buffer
*nodes
[BTRFS_MAX_LEVEL
];
349 int slots
[BTRFS_MAX_LEVEL
];
350 /* if there is real range locking, this locks field will change */
351 int locks
[BTRFS_MAX_LEVEL
];
353 /* keep some upper locks as we walk down */
360 * items in the extent btree are used to record the objectid of the
361 * owner of the block and the number of references
363 struct btrfs_extent_item
{
365 } __attribute__ ((__packed__
));
367 struct btrfs_extent_ref
{
372 } __attribute__ ((__packed__
));
374 /* dev extents record free space on individual devices. The owner
375 * field points back to the chunk allocation mapping tree that allocated
376 * the extent. The chunk tree uuid field is a way to double check the owner
378 struct btrfs_dev_extent
{
380 __le64 chunk_objectid
;
383 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
384 } __attribute__ ((__packed__
));
386 struct btrfs_inode_ref
{
390 } __attribute__ ((__packed__
));
392 struct btrfs_timespec
{
395 } __attribute__ ((__packed__
));
398 * there is no padding here on purpose. If you want to extent the inode,
399 * make a new item type
401 struct btrfs_inode_item
{
402 /* nfs style generation number */
404 /* transid that last touched this inode */
416 struct btrfs_timespec atime
;
417 struct btrfs_timespec ctime
;
418 struct btrfs_timespec mtime
;
419 struct btrfs_timespec otime
;
420 } __attribute__ ((__packed__
));
422 struct btrfs_dir_log_item
{
424 } __attribute__ ((__packed__
));
426 struct btrfs_dir_item
{
427 struct btrfs_disk_key location
;
432 } __attribute__ ((__packed__
));
434 struct btrfs_root_item
{
435 struct btrfs_inode_item inode
;
442 struct btrfs_disk_key drop_progress
;
445 } __attribute__ ((__packed__
));
447 #define BTRFS_FILE_EXTENT_REG 0
448 #define BTRFS_FILE_EXTENT_INLINE 1
450 struct btrfs_file_extent_item
{
454 * disk space consumed by the extent, checksum blocks are included
458 __le64 disk_num_bytes
;
460 * the logical offset in file blocks (no csums)
461 * this extent record is for. This allows a file extent to point
462 * into the middle of an existing extent on disk, sharing it
463 * between two snapshots (useful if some bytes in the middle of the
464 * extent have changed
468 * the logical number of file blocks (no csums included)
471 } __attribute__ ((__packed__
));
473 struct btrfs_csum_item
{
475 } __attribute__ ((__packed__
));
477 /* different types of block groups (and chunks) */
478 #define BTRFS_BLOCK_GROUP_DATA (1 << 0)
479 #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1)
480 #define BTRFS_BLOCK_GROUP_METADATA (1 << 2)
481 #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3)
482 #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4)
483 #define BTRFS_BLOCK_GROUP_DUP (1 << 5)
484 #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6)
486 struct btrfs_block_group_item
{
488 __le64 chunk_objectid
;
490 } __attribute__ ((__packed__
));
492 struct btrfs_space_info
{
499 struct list_head list
;
501 /* for block groups in our same type */
502 struct list_head block_groups
;
506 struct btrfs_free_space
{
507 struct rb_node bytes_index
;
508 struct rb_node offset_index
;
513 struct btrfs_block_group_cache
{
514 struct btrfs_key key
;
515 struct btrfs_block_group_item item
;
523 struct btrfs_space_info
*space_info
;
525 /* free space cache stuff */
526 struct rb_root free_space_bytes
;
527 struct rb_root free_space_offset
;
529 /* block group cache stuff */
530 struct rb_node cache_node
;
532 /* for block groups in the same raid type */
533 struct list_head list
;
537 struct btrfs_fs_devices
;
538 struct btrfs_fs_info
{
539 u8 fsid
[BTRFS_FSID_SIZE
];
540 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
541 struct btrfs_root
*extent_root
;
542 struct btrfs_root
*tree_root
;
543 struct btrfs_root
*chunk_root
;
544 struct btrfs_root
*dev_root
;
546 /* the log root tree is a directory of all the other log roots */
547 struct btrfs_root
*log_root_tree
;
548 struct radix_tree_root fs_roots_radix
;
550 /* block group cache stuff */
551 spinlock_t block_group_cache_lock
;
552 struct rb_root block_group_cache_tree
;
554 struct extent_io_tree pinned_extents
;
555 struct extent_io_tree pending_del
;
556 struct extent_io_tree extent_ins
;
558 /* logical->physical extent mapping */
559 struct btrfs_mapping_tree mapping_tree
;
562 u64 last_trans_committed
;
563 u64 last_trans_new_blockgroup
;
564 u64 open_ioctl_trans
;
565 unsigned long mount_opt
;
569 struct btrfs_transaction
*running_transaction
;
570 wait_queue_head_t transaction_throttle
;
571 wait_queue_head_t transaction_wait
;
572 wait_queue_head_t async_submit_wait
;
574 wait_queue_head_t tree_log_wait
;
576 struct btrfs_super_block super_copy
;
577 struct btrfs_super_block super_for_commit
;
578 struct block_device
*__bdev
;
579 struct super_block
*sb
;
580 struct inode
*btree_inode
;
581 struct backing_dev_info bdi
;
582 spinlock_t hash_lock
;
583 struct mutex trans_mutex
;
584 struct mutex tree_log_mutex
;
585 struct mutex transaction_kthread_mutex
;
586 struct mutex cleaner_mutex
;
587 struct mutex alloc_mutex
;
588 struct mutex chunk_mutex
;
589 struct mutex drop_mutex
;
590 struct mutex volume_mutex
;
591 struct list_head trans_list
;
592 struct list_head hashers
;
593 struct list_head dead_roots
;
595 atomic_t nr_async_submits
;
596 atomic_t nr_async_bios
;
597 atomic_t tree_log_writers
;
598 atomic_t tree_log_commit
;
599 unsigned long tree_log_batch
;
600 u64 tree_log_transid
;
603 * this is used by the balancing code to wait for all the pending
606 spinlock_t ordered_extent_lock
;
607 struct list_head ordered_extents
;
608 struct list_head delalloc_inodes
;
611 * there is a pool of worker threads for checksumming during writes
612 * and a pool for checksumming after reads. This is because readers
613 * can run with FS locks held, and the writers may be waiting for
614 * those locks. We don't want ordering in the pending list to cause
615 * deadlocks, and so the two are serviced separately.
617 * A third pool does submit_bio to avoid deadlocking with the other
620 struct btrfs_workers workers
;
621 struct btrfs_workers endio_workers
;
622 struct btrfs_workers endio_write_workers
;
623 struct btrfs_workers submit_workers
;
625 * fixup workers take dirty pages that didn't properly go through
626 * the cow mechanism and make them safe to write. It happens
627 * for the sys_munmap function call path
629 struct btrfs_workers fixup_workers
;
630 struct task_struct
*transaction_kthread
;
631 struct task_struct
*cleaner_kthread
;
632 int thread_pool_size
;
634 struct kobject super_kobj
;
635 struct completion kobj_unregister
;
638 int log_root_recovering
;
640 atomic_t throttle_gen
;
643 struct list_head dirty_cowonly_roots
;
645 struct btrfs_fs_devices
*fs_devices
;
646 struct list_head space_info
;
647 spinlock_t delalloc_lock
;
648 spinlock_t new_trans_lock
;
654 spinlock_t ref_cache_lock
;
655 u64 total_ref_cache_size
;
657 u64 avail_data_alloc_bits
;
658 u64 avail_metadata_alloc_bits
;
659 u64 avail_system_alloc_bits
;
660 u64 data_alloc_profile
;
661 u64 metadata_alloc_profile
;
662 u64 system_alloc_profile
;
667 struct btrfs_leaf_ref_tree
{
669 struct btrfs_leaf_ref
*last
;
670 struct list_head list
;
675 * in ram representation of the tree. extent_root is used for all allocations
676 * and for the extent tree extent_root root.
678 struct btrfs_dirty_root
;
680 struct extent_buffer
*node
;
682 /* the node lock is held while changing the node pointer */
683 spinlock_t node_lock
;
685 struct extent_buffer
*commit_root
;
686 struct btrfs_leaf_ref_tree
*ref_tree
;
687 struct btrfs_leaf_ref_tree ref_tree_struct
;
688 struct btrfs_dirty_root
*dirty_root
;
689 struct btrfs_root
*log_root
;
691 struct btrfs_root_item root_item
;
692 struct btrfs_key root_key
;
693 struct btrfs_fs_info
*fs_info
;
695 struct extent_io_tree dirty_log_pages
;
697 struct kobject root_kobj
;
698 struct completion kobj_unregister
;
699 struct mutex objectid_mutex
;
700 struct mutex log_mutex
;
705 /* data allocations are done in sectorsize units */
708 /* node allocations are done in nodesize units */
711 /* leaf allocations are done in leafsize units */
718 u64 last_inode_alloc
;
721 u64 defrag_trans_start
;
722 struct btrfs_key defrag_progress
;
723 struct btrfs_key defrag_max
;
729 /* the dirty list is only used by non-reference counted roots */
730 struct list_head dirty_list
;
732 spinlock_t list_lock
;
733 struct list_head dead_list
;
734 struct list_head orphan_list
;
739 * inode items have the data typically returned from stat and store other
740 * info about object characteristics. There is one for every file and dir in
743 #define BTRFS_INODE_ITEM_KEY 1
744 #define BTRFS_INODE_REF_KEY 2
745 #define BTRFS_XATTR_ITEM_KEY 8
746 #define BTRFS_ORPHAN_ITEM_KEY 9
747 /* reserve 2-15 close to the inode for later flexibility */
750 * dir items are the name -> inode pointers in a directory. There is one
751 * for every name in a directory.
753 #define BTRFS_DIR_LOG_ITEM_KEY 14
754 #define BTRFS_DIR_LOG_INDEX_KEY 15
755 #define BTRFS_DIR_ITEM_KEY 16
756 #define BTRFS_DIR_INDEX_KEY 17
758 * extent data is for file data
760 #define BTRFS_EXTENT_DATA_KEY 18
762 * csum items have the checksums for data in the extents
764 #define BTRFS_CSUM_ITEM_KEY 19
767 /* reserve 21-31 for other file/dir stuff */
770 * root items point to tree roots. There are typically in the root
771 * tree used by the super block to find all the other trees
773 #define BTRFS_ROOT_ITEM_KEY 32
775 * extent items are in the extent map tree. These record which blocks
776 * are used, and how many references there are to each block
778 #define BTRFS_EXTENT_ITEM_KEY 33
779 #define BTRFS_EXTENT_REF_KEY 34
782 * block groups give us hints into the extent allocation trees. Which
783 * blocks are free etc etc
785 #define BTRFS_BLOCK_GROUP_ITEM_KEY 50
787 #define BTRFS_DEV_EXTENT_KEY 75
788 #define BTRFS_DEV_ITEM_KEY 76
789 #define BTRFS_CHUNK_ITEM_KEY 77
792 * string items are for debugging. They just store a short string of
795 #define BTRFS_STRING_ITEM_KEY 253
797 #define BTRFS_MOUNT_NODATASUM (1 << 0)
798 #define BTRFS_MOUNT_NODATACOW (1 << 1)
799 #define BTRFS_MOUNT_NOBARRIER (1 << 2)
800 #define BTRFS_MOUNT_SSD (1 << 3)
801 #define BTRFS_MOUNT_DEGRADED (1 << 4)
803 #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt)
804 #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt)
805 #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \
810 #define BTRFS_INODE_NODATASUM (1 << 0)
811 #define BTRFS_INODE_NODATACOW (1 << 1)
812 #define BTRFS_INODE_READONLY (1 << 2)
813 #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \
815 #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \
817 #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \
819 /* some macros to generate set/get funcs for the struct fields. This
820 * assumes there is a lefoo_to_cpu for every type, so lets make a simple
823 #define le8_to_cpu(v) (v)
824 #define cpu_to_le8(v) (v)
827 #define read_eb_member(eb, ptr, type, member, result) ( \
828 read_extent_buffer(eb, (char *)(result), \
829 ((unsigned long)(ptr)) + \
830 offsetof(type, member), \
831 sizeof(((type *)0)->member)))
833 #define write_eb_member(eb, ptr, type, member, result) ( \
834 write_extent_buffer(eb, (char *)(result), \
835 ((unsigned long)(ptr)) + \
836 offsetof(type, member), \
837 sizeof(((type *)0)->member)))
839 #ifndef BTRFS_SETGET_FUNCS
840 #define BTRFS_SETGET_FUNCS(name, type, member, bits) \
841 u##bits btrfs_##name(struct extent_buffer *eb, type *s); \
842 void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val);
845 #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
846 static inline u##bits btrfs_##name(struct extent_buffer *eb) \
848 type *p = kmap_atomic(eb->first_page, KM_USER0); \
849 u##bits res = le##bits##_to_cpu(p->member); \
850 kunmap_atomic(p, KM_USER0); \
853 static inline void btrfs_set_##name(struct extent_buffer *eb, \
856 type *p = kmap_atomic(eb->first_page, KM_USER0); \
857 p->member = cpu_to_le##bits(val); \
858 kunmap_atomic(p, KM_USER0); \
861 #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
862 static inline u##bits btrfs_##name(type *s) \
864 return le##bits##_to_cpu(s->member); \
866 static inline void btrfs_set_##name(type *s, u##bits val) \
868 s->member = cpu_to_le##bits(val); \
871 BTRFS_SETGET_FUNCS(device_type
, struct btrfs_dev_item
, type
, 64);
872 BTRFS_SETGET_FUNCS(device_total_bytes
, struct btrfs_dev_item
, total_bytes
, 64);
873 BTRFS_SETGET_FUNCS(device_bytes_used
, struct btrfs_dev_item
, bytes_used
, 64);
874 BTRFS_SETGET_FUNCS(device_io_align
, struct btrfs_dev_item
, io_align
, 32);
875 BTRFS_SETGET_FUNCS(device_io_width
, struct btrfs_dev_item
, io_width
, 32);
876 BTRFS_SETGET_FUNCS(device_sector_size
, struct btrfs_dev_item
, sector_size
, 32);
877 BTRFS_SETGET_FUNCS(device_id
, struct btrfs_dev_item
, devid
, 64);
878 BTRFS_SETGET_FUNCS(device_group
, struct btrfs_dev_item
, dev_group
, 32);
879 BTRFS_SETGET_FUNCS(device_seek_speed
, struct btrfs_dev_item
, seek_speed
, 8);
880 BTRFS_SETGET_FUNCS(device_bandwidth
, struct btrfs_dev_item
, bandwidth
, 8);
882 BTRFS_SETGET_STACK_FUNCS(stack_device_type
, struct btrfs_dev_item
, type
, 64);
883 BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes
, struct btrfs_dev_item
,
885 BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used
, struct btrfs_dev_item
,
887 BTRFS_SETGET_STACK_FUNCS(stack_device_io_align
, struct btrfs_dev_item
,
889 BTRFS_SETGET_STACK_FUNCS(stack_device_io_width
, struct btrfs_dev_item
,
891 BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size
, struct btrfs_dev_item
,
893 BTRFS_SETGET_STACK_FUNCS(stack_device_id
, struct btrfs_dev_item
, devid
, 64);
894 BTRFS_SETGET_STACK_FUNCS(stack_device_group
, struct btrfs_dev_item
,
896 BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed
, struct btrfs_dev_item
,
898 BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth
, struct btrfs_dev_item
,
901 static inline char *btrfs_device_uuid(struct btrfs_dev_item
*d
)
903 return (char *)d
+ offsetof(struct btrfs_dev_item
, uuid
);
906 BTRFS_SETGET_FUNCS(chunk_length
, struct btrfs_chunk
, length
, 64);
907 BTRFS_SETGET_FUNCS(chunk_owner
, struct btrfs_chunk
, owner
, 64);
908 BTRFS_SETGET_FUNCS(chunk_stripe_len
, struct btrfs_chunk
, stripe_len
, 64);
909 BTRFS_SETGET_FUNCS(chunk_io_align
, struct btrfs_chunk
, io_align
, 32);
910 BTRFS_SETGET_FUNCS(chunk_io_width
, struct btrfs_chunk
, io_width
, 32);
911 BTRFS_SETGET_FUNCS(chunk_sector_size
, struct btrfs_chunk
, sector_size
, 32);
912 BTRFS_SETGET_FUNCS(chunk_type
, struct btrfs_chunk
, type
, 64);
913 BTRFS_SETGET_FUNCS(chunk_num_stripes
, struct btrfs_chunk
, num_stripes
, 16);
914 BTRFS_SETGET_FUNCS(chunk_sub_stripes
, struct btrfs_chunk
, sub_stripes
, 16);
915 BTRFS_SETGET_FUNCS(stripe_devid
, struct btrfs_stripe
, devid
, 64);
916 BTRFS_SETGET_FUNCS(stripe_offset
, struct btrfs_stripe
, offset
, 64);
918 static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe
*s
)
920 return (char *)s
+ offsetof(struct btrfs_stripe
, dev_uuid
);
923 BTRFS_SETGET_STACK_FUNCS(stack_chunk_length
, struct btrfs_chunk
, length
, 64);
924 BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner
, struct btrfs_chunk
, owner
, 64);
925 BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len
, struct btrfs_chunk
,
927 BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align
, struct btrfs_chunk
,
929 BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width
, struct btrfs_chunk
,
931 BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size
, struct btrfs_chunk
,
933 BTRFS_SETGET_STACK_FUNCS(stack_chunk_type
, struct btrfs_chunk
, type
, 64);
934 BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes
, struct btrfs_chunk
,
936 BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes
, struct btrfs_chunk
,
938 BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid
, struct btrfs_stripe
, devid
, 64);
939 BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset
, struct btrfs_stripe
, offset
, 64);
941 static inline struct btrfs_stripe
*btrfs_stripe_nr(struct btrfs_chunk
*c
,
944 unsigned long offset
= (unsigned long)c
;
945 offset
+= offsetof(struct btrfs_chunk
, stripe
);
946 offset
+= nr
* sizeof(struct btrfs_stripe
);
947 return (struct btrfs_stripe
*)offset
;
950 static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk
*c
, int nr
)
952 return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c
, nr
));
955 static inline u64
btrfs_stripe_offset_nr(struct extent_buffer
*eb
,
956 struct btrfs_chunk
*c
, int nr
)
958 return btrfs_stripe_offset(eb
, btrfs_stripe_nr(c
, nr
));
961 static inline void btrfs_set_stripe_offset_nr(struct extent_buffer
*eb
,
962 struct btrfs_chunk
*c
, int nr
,
965 btrfs_set_stripe_offset(eb
, btrfs_stripe_nr(c
, nr
), val
);
968 static inline u64
btrfs_stripe_devid_nr(struct extent_buffer
*eb
,
969 struct btrfs_chunk
*c
, int nr
)
971 return btrfs_stripe_devid(eb
, btrfs_stripe_nr(c
, nr
));
974 static inline void btrfs_set_stripe_devid_nr(struct extent_buffer
*eb
,
975 struct btrfs_chunk
*c
, int nr
,
978 btrfs_set_stripe_devid(eb
, btrfs_stripe_nr(c
, nr
), val
);
981 /* struct btrfs_block_group_item */
982 BTRFS_SETGET_STACK_FUNCS(block_group_used
, struct btrfs_block_group_item
,
984 BTRFS_SETGET_FUNCS(disk_block_group_used
, struct btrfs_block_group_item
,
986 BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid
,
987 struct btrfs_block_group_item
, chunk_objectid
, 64);
989 BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid
,
990 struct btrfs_block_group_item
, chunk_objectid
, 64);
991 BTRFS_SETGET_FUNCS(disk_block_group_flags
,
992 struct btrfs_block_group_item
, flags
, 64);
993 BTRFS_SETGET_STACK_FUNCS(block_group_flags
,
994 struct btrfs_block_group_item
, flags
, 64);
996 /* struct btrfs_inode_ref */
997 BTRFS_SETGET_FUNCS(inode_ref_name_len
, struct btrfs_inode_ref
, name_len
, 16);
998 BTRFS_SETGET_FUNCS(inode_ref_index
, struct btrfs_inode_ref
, index
, 64);
1000 /* struct btrfs_inode_item */
1001 BTRFS_SETGET_FUNCS(inode_generation
, struct btrfs_inode_item
, generation
, 64);
1002 BTRFS_SETGET_FUNCS(inode_transid
, struct btrfs_inode_item
, transid
, 64);
1003 BTRFS_SETGET_FUNCS(inode_size
, struct btrfs_inode_item
, size
, 64);
1004 BTRFS_SETGET_FUNCS(inode_nblocks
, struct btrfs_inode_item
, nblocks
, 64);
1005 BTRFS_SETGET_FUNCS(inode_block_group
, struct btrfs_inode_item
, block_group
, 64);
1006 BTRFS_SETGET_FUNCS(inode_nlink
, struct btrfs_inode_item
, nlink
, 32);
1007 BTRFS_SETGET_FUNCS(inode_uid
, struct btrfs_inode_item
, uid
, 32);
1008 BTRFS_SETGET_FUNCS(inode_gid
, struct btrfs_inode_item
, gid
, 32);
1009 BTRFS_SETGET_FUNCS(inode_mode
, struct btrfs_inode_item
, mode
, 32);
1010 BTRFS_SETGET_FUNCS(inode_rdev
, struct btrfs_inode_item
, rdev
, 64);
1011 BTRFS_SETGET_FUNCS(inode_flags
, struct btrfs_inode_item
, flags
, 16);
1012 BTRFS_SETGET_FUNCS(inode_compat_flags
, struct btrfs_inode_item
,
1015 static inline struct btrfs_timespec
*
1016 btrfs_inode_atime(struct btrfs_inode_item
*inode_item
)
1018 unsigned long ptr
= (unsigned long)inode_item
;
1019 ptr
+= offsetof(struct btrfs_inode_item
, atime
);
1020 return (struct btrfs_timespec
*)ptr
;
1023 static inline struct btrfs_timespec
*
1024 btrfs_inode_mtime(struct btrfs_inode_item
*inode_item
)
1026 unsigned long ptr
= (unsigned long)inode_item
;
1027 ptr
+= offsetof(struct btrfs_inode_item
, mtime
);
1028 return (struct btrfs_timespec
*)ptr
;
1031 static inline struct btrfs_timespec
*
1032 btrfs_inode_ctime(struct btrfs_inode_item
*inode_item
)
1034 unsigned long ptr
= (unsigned long)inode_item
;
1035 ptr
+= offsetof(struct btrfs_inode_item
, ctime
);
1036 return (struct btrfs_timespec
*)ptr
;
1039 static inline struct btrfs_timespec
*
1040 btrfs_inode_otime(struct btrfs_inode_item
*inode_item
)
1042 unsigned long ptr
= (unsigned long)inode_item
;
1043 ptr
+= offsetof(struct btrfs_inode_item
, otime
);
1044 return (struct btrfs_timespec
*)ptr
;
1047 BTRFS_SETGET_FUNCS(timespec_sec
, struct btrfs_timespec
, sec
, 64);
1048 BTRFS_SETGET_FUNCS(timespec_nsec
, struct btrfs_timespec
, nsec
, 32);
1050 /* struct btrfs_extent_item */
1051 BTRFS_SETGET_FUNCS(extent_refs
, struct btrfs_extent_item
, refs
, 32);
1053 /* struct btrfs_dev_extent */
1054 BTRFS_SETGET_FUNCS(dev_extent_chunk_tree
, struct btrfs_dev_extent
,
1056 BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid
, struct btrfs_dev_extent
,
1057 chunk_objectid
, 64);
1058 BTRFS_SETGET_FUNCS(dev_extent_chunk_offset
, struct btrfs_dev_extent
,
1060 BTRFS_SETGET_FUNCS(dev_extent_length
, struct btrfs_dev_extent
, length
, 64);
1062 static inline u8
*btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent
*dev
)
1064 unsigned long ptr
= offsetof(struct btrfs_dev_extent
, chunk_tree_uuid
);
1065 return (u8
*)((unsigned long)dev
+ ptr
);
1068 /* struct btrfs_extent_ref */
1069 BTRFS_SETGET_FUNCS(ref_root
, struct btrfs_extent_ref
, root
, 64);
1070 BTRFS_SETGET_FUNCS(ref_generation
, struct btrfs_extent_ref
, generation
, 64);
1071 BTRFS_SETGET_FUNCS(ref_objectid
, struct btrfs_extent_ref
, objectid
, 64);
1072 BTRFS_SETGET_FUNCS(ref_offset
, struct btrfs_extent_ref
, offset
, 64);
1074 BTRFS_SETGET_STACK_FUNCS(stack_ref_root
, struct btrfs_extent_ref
, root
, 64);
1075 BTRFS_SETGET_STACK_FUNCS(stack_ref_generation
, struct btrfs_extent_ref
,
1077 BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid
, struct btrfs_extent_ref
,
1079 BTRFS_SETGET_STACK_FUNCS(stack_ref_offset
, struct btrfs_extent_ref
, offset
, 64);
1081 BTRFS_SETGET_STACK_FUNCS(stack_extent_refs
, struct btrfs_extent_item
,
1084 /* struct btrfs_node */
1085 BTRFS_SETGET_FUNCS(key_blockptr
, struct btrfs_key_ptr
, blockptr
, 64);
1086 BTRFS_SETGET_FUNCS(key_generation
, struct btrfs_key_ptr
, generation
, 64);
1088 static inline u64
btrfs_node_blockptr(struct extent_buffer
*eb
, int nr
)
1091 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1092 sizeof(struct btrfs_key_ptr
) * nr
;
1093 return btrfs_key_blockptr(eb
, (struct btrfs_key_ptr
*)ptr
);
1096 static inline void btrfs_set_node_blockptr(struct extent_buffer
*eb
,
1100 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1101 sizeof(struct btrfs_key_ptr
) * nr
;
1102 btrfs_set_key_blockptr(eb
, (struct btrfs_key_ptr
*)ptr
, val
);
1105 static inline u64
btrfs_node_ptr_generation(struct extent_buffer
*eb
, int nr
)
1108 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1109 sizeof(struct btrfs_key_ptr
) * nr
;
1110 return btrfs_key_generation(eb
, (struct btrfs_key_ptr
*)ptr
);
1113 static inline void btrfs_set_node_ptr_generation(struct extent_buffer
*eb
,
1117 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1118 sizeof(struct btrfs_key_ptr
) * nr
;
1119 btrfs_set_key_generation(eb
, (struct btrfs_key_ptr
*)ptr
, val
);
1122 static inline unsigned long btrfs_node_key_ptr_offset(int nr
)
1124 return offsetof(struct btrfs_node
, ptrs
) +
1125 sizeof(struct btrfs_key_ptr
) * nr
;
1128 void btrfs_node_key(struct extent_buffer
*eb
,
1129 struct btrfs_disk_key
*disk_key
, int nr
);
1131 static inline void btrfs_set_node_key(struct extent_buffer
*eb
,
1132 struct btrfs_disk_key
*disk_key
, int nr
)
1135 ptr
= btrfs_node_key_ptr_offset(nr
);
1136 write_eb_member(eb
, (struct btrfs_key_ptr
*)ptr
,
1137 struct btrfs_key_ptr
, key
, disk_key
);
1140 /* struct btrfs_item */
1141 BTRFS_SETGET_FUNCS(item_offset
, struct btrfs_item
, offset
, 32);
1142 BTRFS_SETGET_FUNCS(item_size
, struct btrfs_item
, size
, 32);
1144 static inline unsigned long btrfs_item_nr_offset(int nr
)
1146 return offsetof(struct btrfs_leaf
, items
) +
1147 sizeof(struct btrfs_item
) * nr
;
1150 static inline struct btrfs_item
*btrfs_item_nr(struct extent_buffer
*eb
,
1153 return (struct btrfs_item
*)btrfs_item_nr_offset(nr
);
1156 static inline u32
btrfs_item_end(struct extent_buffer
*eb
,
1157 struct btrfs_item
*item
)
1159 return btrfs_item_offset(eb
, item
) + btrfs_item_size(eb
, item
);
1162 static inline u32
btrfs_item_end_nr(struct extent_buffer
*eb
, int nr
)
1164 return btrfs_item_end(eb
, btrfs_item_nr(eb
, nr
));
1167 static inline u32
btrfs_item_offset_nr(struct extent_buffer
*eb
, int nr
)
1169 return btrfs_item_offset(eb
, btrfs_item_nr(eb
, nr
));
1172 static inline u32
btrfs_item_size_nr(struct extent_buffer
*eb
, int nr
)
1174 return btrfs_item_size(eb
, btrfs_item_nr(eb
, nr
));
1177 static inline void btrfs_item_key(struct extent_buffer
*eb
,
1178 struct btrfs_disk_key
*disk_key
, int nr
)
1180 struct btrfs_item
*item
= btrfs_item_nr(eb
, nr
);
1181 read_eb_member(eb
, item
, struct btrfs_item
, key
, disk_key
);
1184 static inline void btrfs_set_item_key(struct extent_buffer
*eb
,
1185 struct btrfs_disk_key
*disk_key
, int nr
)
1187 struct btrfs_item
*item
= btrfs_item_nr(eb
, nr
);
1188 write_eb_member(eb
, item
, struct btrfs_item
, key
, disk_key
);
1191 BTRFS_SETGET_FUNCS(dir_log_end
, struct btrfs_dir_log_item
, end
, 64);
1193 /* struct btrfs_dir_item */
1194 BTRFS_SETGET_FUNCS(dir_data_len
, struct btrfs_dir_item
, data_len
, 16);
1195 BTRFS_SETGET_FUNCS(dir_type
, struct btrfs_dir_item
, type
, 8);
1196 BTRFS_SETGET_FUNCS(dir_name_len
, struct btrfs_dir_item
, name_len
, 16);
1197 BTRFS_SETGET_FUNCS(dir_transid
, struct btrfs_dir_item
, transid
, 64);
1199 static inline void btrfs_dir_item_key(struct extent_buffer
*eb
,
1200 struct btrfs_dir_item
*item
,
1201 struct btrfs_disk_key
*key
)
1203 read_eb_member(eb
, item
, struct btrfs_dir_item
, location
, key
);
1206 static inline void btrfs_set_dir_item_key(struct extent_buffer
*eb
,
1207 struct btrfs_dir_item
*item
,
1208 struct btrfs_disk_key
*key
)
1210 write_eb_member(eb
, item
, struct btrfs_dir_item
, location
, key
);
1213 /* struct btrfs_disk_key */
1214 BTRFS_SETGET_STACK_FUNCS(disk_key_objectid
, struct btrfs_disk_key
,
1216 BTRFS_SETGET_STACK_FUNCS(disk_key_offset
, struct btrfs_disk_key
, offset
, 64);
1217 BTRFS_SETGET_STACK_FUNCS(disk_key_type
, struct btrfs_disk_key
, type
, 8);
1219 static inline void btrfs_disk_key_to_cpu(struct btrfs_key
*cpu
,
1220 struct btrfs_disk_key
*disk
)
1222 cpu
->offset
= le64_to_cpu(disk
->offset
);
1223 cpu
->type
= disk
->type
;
1224 cpu
->objectid
= le64_to_cpu(disk
->objectid
);
1227 static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key
*disk
,
1228 struct btrfs_key
*cpu
)
1230 disk
->offset
= cpu_to_le64(cpu
->offset
);
1231 disk
->type
= cpu
->type
;
1232 disk
->objectid
= cpu_to_le64(cpu
->objectid
);
1235 static inline void btrfs_node_key_to_cpu(struct extent_buffer
*eb
,
1236 struct btrfs_key
*key
, int nr
)
1238 struct btrfs_disk_key disk_key
;
1239 btrfs_node_key(eb
, &disk_key
, nr
);
1240 btrfs_disk_key_to_cpu(key
, &disk_key
);
1243 static inline void btrfs_item_key_to_cpu(struct extent_buffer
*eb
,
1244 struct btrfs_key
*key
, int nr
)
1246 struct btrfs_disk_key disk_key
;
1247 btrfs_item_key(eb
, &disk_key
, nr
);
1248 btrfs_disk_key_to_cpu(key
, &disk_key
);
1251 static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer
*eb
,
1252 struct btrfs_dir_item
*item
,
1253 struct btrfs_key
*key
)
1255 struct btrfs_disk_key disk_key
;
1256 btrfs_dir_item_key(eb
, item
, &disk_key
);
1257 btrfs_disk_key_to_cpu(key
, &disk_key
);
1261 static inline u8
btrfs_key_type(struct btrfs_key
*key
)
1266 static inline void btrfs_set_key_type(struct btrfs_key
*key
, u8 val
)
1271 /* struct btrfs_header */
1272 BTRFS_SETGET_HEADER_FUNCS(header_bytenr
, struct btrfs_header
, bytenr
, 64);
1273 BTRFS_SETGET_HEADER_FUNCS(header_generation
, struct btrfs_header
,
1275 BTRFS_SETGET_HEADER_FUNCS(header_owner
, struct btrfs_header
, owner
, 64);
1276 BTRFS_SETGET_HEADER_FUNCS(header_nritems
, struct btrfs_header
, nritems
, 32);
1277 BTRFS_SETGET_HEADER_FUNCS(header_flags
, struct btrfs_header
, flags
, 64);
1278 BTRFS_SETGET_HEADER_FUNCS(header_level
, struct btrfs_header
, level
, 8);
1280 static inline int btrfs_header_flag(struct extent_buffer
*eb
, u64 flag
)
1282 return (btrfs_header_flags(eb
) & flag
) == flag
;
1285 static inline int btrfs_set_header_flag(struct extent_buffer
*eb
, u64 flag
)
1287 u64 flags
= btrfs_header_flags(eb
);
1288 btrfs_set_header_flags(eb
, flags
| flag
);
1289 return (flags
& flag
) == flag
;
1292 static inline int btrfs_clear_header_flag(struct extent_buffer
*eb
, u64 flag
)
1294 u64 flags
= btrfs_header_flags(eb
);
1295 btrfs_set_header_flags(eb
, flags
& ~flag
);
1296 return (flags
& flag
) == flag
;
1299 static inline u8
*btrfs_header_fsid(struct extent_buffer
*eb
)
1301 unsigned long ptr
= offsetof(struct btrfs_header
, fsid
);
1305 static inline u8
*btrfs_header_chunk_tree_uuid(struct extent_buffer
*eb
)
1307 unsigned long ptr
= offsetof(struct btrfs_header
, chunk_tree_uuid
);
1311 static inline u8
*btrfs_super_fsid(struct extent_buffer
*eb
)
1313 unsigned long ptr
= offsetof(struct btrfs_super_block
, fsid
);
1317 static inline u8
*btrfs_header_csum(struct extent_buffer
*eb
)
1319 unsigned long ptr
= offsetof(struct btrfs_header
, csum
);
1323 static inline struct btrfs_node
*btrfs_buffer_node(struct extent_buffer
*eb
)
1328 static inline struct btrfs_leaf
*btrfs_buffer_leaf(struct extent_buffer
*eb
)
1333 static inline struct btrfs_header
*btrfs_buffer_header(struct extent_buffer
*eb
)
1338 static inline int btrfs_is_leaf(struct extent_buffer
*eb
)
1340 return (btrfs_header_level(eb
) == 0);
1343 /* struct btrfs_root_item */
1344 BTRFS_SETGET_FUNCS(disk_root_refs
, struct btrfs_root_item
, refs
, 32);
1345 BTRFS_SETGET_FUNCS(disk_root_bytenr
, struct btrfs_root_item
, bytenr
, 64);
1346 BTRFS_SETGET_FUNCS(disk_root_level
, struct btrfs_root_item
, level
, 8);
1348 BTRFS_SETGET_STACK_FUNCS(root_bytenr
, struct btrfs_root_item
, bytenr
, 64);
1349 BTRFS_SETGET_STACK_FUNCS(root_level
, struct btrfs_root_item
, level
, 8);
1350 BTRFS_SETGET_STACK_FUNCS(root_dirid
, struct btrfs_root_item
, root_dirid
, 64);
1351 BTRFS_SETGET_STACK_FUNCS(root_refs
, struct btrfs_root_item
, refs
, 32);
1352 BTRFS_SETGET_STACK_FUNCS(root_flags
, struct btrfs_root_item
, flags
, 32);
1353 BTRFS_SETGET_STACK_FUNCS(root_used
, struct btrfs_root_item
, bytes_used
, 64);
1354 BTRFS_SETGET_STACK_FUNCS(root_limit
, struct btrfs_root_item
, byte_limit
, 64);
1356 /* struct btrfs_super_block */
1357 BTRFS_SETGET_STACK_FUNCS(super_bytenr
, struct btrfs_super_block
, bytenr
, 64);
1358 BTRFS_SETGET_STACK_FUNCS(super_flags
, struct btrfs_super_block
, flags
, 64);
1359 BTRFS_SETGET_STACK_FUNCS(super_generation
, struct btrfs_super_block
,
1361 BTRFS_SETGET_STACK_FUNCS(super_root
, struct btrfs_super_block
, root
, 64);
1362 BTRFS_SETGET_STACK_FUNCS(super_sys_array_size
,
1363 struct btrfs_super_block
, sys_chunk_array_size
, 32);
1364 BTRFS_SETGET_STACK_FUNCS(super_root_level
, struct btrfs_super_block
,
1366 BTRFS_SETGET_STACK_FUNCS(super_chunk_root
, struct btrfs_super_block
,
1368 BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level
, struct btrfs_super_block
,
1369 chunk_root_level
, 8);
1370 BTRFS_SETGET_STACK_FUNCS(super_log_root
, struct btrfs_super_block
,
1372 BTRFS_SETGET_STACK_FUNCS(super_log_root_level
, struct btrfs_super_block
,
1374 BTRFS_SETGET_STACK_FUNCS(super_total_bytes
, struct btrfs_super_block
,
1376 BTRFS_SETGET_STACK_FUNCS(super_bytes_used
, struct btrfs_super_block
,
1378 BTRFS_SETGET_STACK_FUNCS(super_sectorsize
, struct btrfs_super_block
,
1380 BTRFS_SETGET_STACK_FUNCS(super_nodesize
, struct btrfs_super_block
,
1382 BTRFS_SETGET_STACK_FUNCS(super_leafsize
, struct btrfs_super_block
,
1384 BTRFS_SETGET_STACK_FUNCS(super_stripesize
, struct btrfs_super_block
,
1386 BTRFS_SETGET_STACK_FUNCS(super_root_dir
, struct btrfs_super_block
,
1387 root_dir_objectid
, 64);
1388 BTRFS_SETGET_STACK_FUNCS(super_num_devices
, struct btrfs_super_block
,
1391 static inline unsigned long btrfs_leaf_data(struct extent_buffer
*l
)
1393 return offsetof(struct btrfs_leaf
, items
);
1396 /* struct btrfs_file_extent_item */
1397 BTRFS_SETGET_FUNCS(file_extent_type
, struct btrfs_file_extent_item
, type
, 8);
1399 static inline unsigned long btrfs_file_extent_inline_start(struct
1400 btrfs_file_extent_item
*e
)
1402 unsigned long offset
= (unsigned long)e
;
1403 offset
+= offsetof(struct btrfs_file_extent_item
, disk_bytenr
);
1407 static inline u32
btrfs_file_extent_calc_inline_size(u32 datasize
)
1409 return offsetof(struct btrfs_file_extent_item
, disk_bytenr
) + datasize
;
1412 static inline u32
btrfs_file_extent_inline_len(struct extent_buffer
*eb
,
1413 struct btrfs_item
*e
)
1415 unsigned long offset
;
1416 offset
= offsetof(struct btrfs_file_extent_item
, disk_bytenr
);
1417 return btrfs_item_size(eb
, e
) - offset
;
1420 BTRFS_SETGET_FUNCS(file_extent_disk_bytenr
, struct btrfs_file_extent_item
,
1422 BTRFS_SETGET_FUNCS(file_extent_generation
, struct btrfs_file_extent_item
,
1424 BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes
, struct btrfs_file_extent_item
,
1425 disk_num_bytes
, 64);
1426 BTRFS_SETGET_FUNCS(file_extent_offset
, struct btrfs_file_extent_item
,
1428 BTRFS_SETGET_FUNCS(file_extent_num_bytes
, struct btrfs_file_extent_item
,
1431 static inline struct btrfs_root
*btrfs_sb(struct super_block
*sb
)
1433 return sb
->s_fs_info
;
1436 static inline int btrfs_set_root_name(struct btrfs_root
*root
,
1437 const char *name
, int len
)
1439 /* if we already have a name just free it */
1443 root
->name
= kmalloc(len
+1, GFP_KERNEL
);
1447 memcpy(root
->name
, name
, len
);
1448 root
->name
[len
] ='\0';
1453 static inline u32
btrfs_level_size(struct btrfs_root
*root
, int level
) {
1455 return root
->leafsize
;
1456 return root
->nodesize
;
1459 /* helper function to cast into the data area of the leaf. */
1460 #define btrfs_item_ptr(leaf, slot, type) \
1461 ((type *)(btrfs_leaf_data(leaf) + \
1462 btrfs_item_offset_nr(leaf, slot)))
1464 #define btrfs_item_ptr_offset(leaf, slot) \
1465 ((unsigned long)(btrfs_leaf_data(leaf) + \
1466 btrfs_item_offset_nr(leaf, slot)))
1468 static inline struct dentry
*fdentry(struct file
*file
) {
1469 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
1470 return file
->f_dentry
;
1472 return file
->f_path
.dentry
;
1477 int btrfs_lookup_extent(struct btrfs_root
*root
, struct btrfs_path
*path
,
1478 u64 start
, u64 len
);
1479 int btrfs_update_pinned_extents(struct btrfs_root
*root
,
1480 u64 bytenr
, u64 num
, int pin
);
1481 int btrfs_drop_leaf_ref(struct btrfs_trans_handle
*trans
,
1482 struct btrfs_root
*root
, struct extent_buffer
*leaf
);
1483 int btrfs_cross_ref_exists(struct btrfs_trans_handle
*trans
,
1484 struct btrfs_root
*root
,
1485 struct btrfs_key
*key
, u64 bytenr
);
1486 int btrfs_extent_post_op(struct btrfs_trans_handle
*trans
,
1487 struct btrfs_root
*root
);
1488 int btrfs_copy_pinned(struct btrfs_root
*root
, struct extent_io_tree
*copy
);
1489 struct btrfs_block_group_cache
*btrfs_lookup_block_group(struct
1490 btrfs_fs_info
*info
,
1492 struct btrfs_block_group_cache
*btrfs_find_block_group(struct btrfs_root
*root
,
1493 struct btrfs_block_group_cache
1494 *hint
, u64 search_start
,
1495 int data
, int owner
);
1496 struct extent_buffer
*btrfs_alloc_free_block(struct btrfs_trans_handle
*trans
,
1497 struct btrfs_root
*root
,
1505 struct extent_buffer
*btrfs_init_new_buffer(struct btrfs_trans_handle
*trans
,
1506 struct btrfs_root
*root
,
1507 u64 bytenr
, u32 blocksize
);
1508 int btrfs_shrink_extent_tree(struct btrfs_root
*root
, u64 new_size
);
1509 int btrfs_insert_extent_backref(struct btrfs_trans_handle
*trans
,
1510 struct btrfs_root
*root
,
1511 struct btrfs_path
*path
, u64 bytenr
,
1512 u64 root_objectid
, u64 ref_generation
,
1513 u64 owner
, u64 owner_offset
);
1514 int btrfs_alloc_extent(struct btrfs_trans_handle
*trans
,
1515 struct btrfs_root
*root
,
1516 u64 num_bytes
, u64 min_bytes
,
1517 u64 root_objectid
, u64 ref_generation
,
1518 u64 owner
, u64 owner_offset
,
1519 u64 empty_size
, u64 hint_byte
,
1520 u64 search_end
, struct btrfs_key
*ins
, u64 data
);
1521 int btrfs_alloc_reserved_extent(struct btrfs_trans_handle
*trans
,
1522 struct btrfs_root
*root
,
1523 u64 root_objectid
, u64 ref_generation
,
1524 u64 owner
, u64 owner_offset
,
1525 struct btrfs_key
*ins
);
1526 int btrfs_alloc_logged_extent(struct btrfs_trans_handle
*trans
,
1527 struct btrfs_root
*root
,
1528 u64 root_objectid
, u64 ref_generation
,
1529 u64 owner
, u64 owner_offset
,
1530 struct btrfs_key
*ins
);
1531 int btrfs_reserve_extent(struct btrfs_trans_handle
*trans
,
1532 struct btrfs_root
*root
,
1533 u64 num_bytes
, u64 min_alloc_size
,
1534 u64 empty_size
, u64 hint_byte
,
1535 u64 search_end
, struct btrfs_key
*ins
,
1537 int btrfs_inc_ref(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1538 struct extent_buffer
*buf
, int cache_ref
);
1539 int btrfs_free_extent(struct btrfs_trans_handle
*trans
, struct btrfs_root
1540 *root
, u64 bytenr
, u64 num_bytes
,
1541 u64 root_objectid
, u64 ref_generation
,
1542 u64 owner_objectid
, u64 owner_offset
, int pin
);
1543 int btrfs_free_reserved_extent(struct btrfs_root
*root
, u64 start
, u64 len
);
1544 int btrfs_finish_extent_commit(struct btrfs_trans_handle
*trans
,
1545 struct btrfs_root
*root
,
1546 struct extent_io_tree
*unpin
);
1547 int btrfs_inc_extent_ref(struct btrfs_trans_handle
*trans
,
1548 struct btrfs_root
*root
,
1549 u64 bytenr
, u64 num_bytes
,
1550 u64 root_objectid
, u64 ref_generation
,
1551 u64 owner
, u64 owner_offset
);
1552 int btrfs_write_dirty_block_groups(struct btrfs_trans_handle
*trans
,
1553 struct btrfs_root
*root
);
1554 int btrfs_free_block_groups(struct btrfs_fs_info
*info
);
1555 int btrfs_read_block_groups(struct btrfs_root
*root
);
1556 int btrfs_make_block_group(struct btrfs_trans_handle
*trans
,
1557 struct btrfs_root
*root
, u64 bytes_used
,
1558 u64 type
, u64 chunk_objectid
, u64 chunk_offset
,
1561 int btrfs_previous_item(struct btrfs_root
*root
,
1562 struct btrfs_path
*path
, u64 min_objectid
,
1565 struct extent_buffer
*btrfs_root_node(struct btrfs_root
*root
);
1566 struct extent_buffer
*btrfs_lock_root_node(struct btrfs_root
*root
);
1567 int btrfs_find_next_key(struct btrfs_root
*root
, struct btrfs_path
*path
,
1568 struct btrfs_key
*key
, int lowest_level
,
1569 int cache_only
, u64 min_trans
);
1570 int btrfs_search_forward(struct btrfs_root
*root
, struct btrfs_key
*min_key
,
1571 struct btrfs_key
*max_key
,
1572 struct btrfs_path
*path
, int cache_only
,
1574 int btrfs_cow_block(struct btrfs_trans_handle
*trans
,
1575 struct btrfs_root
*root
, struct extent_buffer
*buf
,
1576 struct extent_buffer
*parent
, int parent_slot
,
1577 struct extent_buffer
**cow_ret
, u64 prealloc_dest
);
1578 int btrfs_copy_root(struct btrfs_trans_handle
*trans
,
1579 struct btrfs_root
*root
,
1580 struct extent_buffer
*buf
,
1581 struct extent_buffer
**cow_ret
, u64 new_root_objectid
);
1582 int btrfs_extend_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
1583 *root
, struct btrfs_path
*path
, u32 data_size
);
1584 int btrfs_truncate_item(struct btrfs_trans_handle
*trans
,
1585 struct btrfs_root
*root
,
1586 struct btrfs_path
*path
,
1587 u32 new_size
, int from_end
);
1588 int btrfs_search_slot(struct btrfs_trans_handle
*trans
, struct btrfs_root
1589 *root
, struct btrfs_key
*key
, struct btrfs_path
*p
, int
1591 int btrfs_realloc_node(struct btrfs_trans_handle
*trans
,
1592 struct btrfs_root
*root
, struct extent_buffer
*parent
,
1593 int start_slot
, int cache_only
, u64
*last_ret
,
1594 struct btrfs_key
*progress
);
1595 void btrfs_release_path(struct btrfs_root
*root
, struct btrfs_path
*p
);
1596 struct btrfs_path
*btrfs_alloc_path(void);
1597 void btrfs_free_path(struct btrfs_path
*p
);
1598 void btrfs_init_path(struct btrfs_path
*p
);
1599 int btrfs_del_items(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1600 struct btrfs_path
*path
, int slot
, int nr
);
1602 static inline int btrfs_del_item(struct btrfs_trans_handle
*trans
,
1603 struct btrfs_root
*root
,
1604 struct btrfs_path
*path
)
1606 return btrfs_del_items(trans
, root
, path
, path
->slots
[0], 1);
1609 int btrfs_insert_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
1610 *root
, struct btrfs_key
*key
, void *data
, u32 data_size
);
1611 int btrfs_insert_empty_items(struct btrfs_trans_handle
*trans
,
1612 struct btrfs_root
*root
,
1613 struct btrfs_path
*path
,
1614 struct btrfs_key
*cpu_key
, u32
*data_size
, int nr
);
1616 static inline int btrfs_insert_empty_item(struct btrfs_trans_handle
*trans
,
1617 struct btrfs_root
*root
,
1618 struct btrfs_path
*path
,
1619 struct btrfs_key
*key
,
1622 return btrfs_insert_empty_items(trans
, root
, path
, key
, &data_size
, 1);
1625 int btrfs_next_leaf(struct btrfs_root
*root
, struct btrfs_path
*path
);
1626 int btrfs_prev_leaf(struct btrfs_root
*root
, struct btrfs_path
*path
);
1627 int btrfs_leaf_free_space(struct btrfs_root
*root
, struct extent_buffer
*leaf
);
1628 int btrfs_drop_snapshot(struct btrfs_trans_handle
*trans
, struct btrfs_root
1631 int btrfs_del_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1632 struct btrfs_key
*key
);
1633 int btrfs_insert_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
1634 *root
, struct btrfs_key
*key
, struct btrfs_root_item
1636 int btrfs_update_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
1637 *root
, struct btrfs_key
*key
, struct btrfs_root_item
1639 int btrfs_find_last_root(struct btrfs_root
*root
, u64 objectid
, struct
1640 btrfs_root_item
*item
, struct btrfs_key
*key
);
1641 int btrfs_search_root(struct btrfs_root
*root
, u64 search_start
,
1642 u64
*found_objectid
);
1643 int btrfs_find_dead_roots(struct btrfs_root
*root
, u64 objectid
,
1644 struct btrfs_root
*latest_root
);
1646 int btrfs_insert_dir_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
1647 *root
, const char *name
, int name_len
, u64 dir
,
1648 struct btrfs_key
*location
, u8 type
, u64 index
);
1649 struct btrfs_dir_item
*btrfs_lookup_dir_item(struct btrfs_trans_handle
*trans
,
1650 struct btrfs_root
*root
,
1651 struct btrfs_path
*path
, u64 dir
,
1652 const char *name
, int name_len
,
1654 struct btrfs_dir_item
*
1655 btrfs_lookup_dir_index_item(struct btrfs_trans_handle
*trans
,
1656 struct btrfs_root
*root
,
1657 struct btrfs_path
*path
, u64 dir
,
1658 u64 objectid
, const char *name
, int name_len
,
1660 struct btrfs_dir_item
*btrfs_match_dir_item_name(struct btrfs_root
*root
,
1661 struct btrfs_path
*path
,
1662 const char *name
, int name_len
);
1663 int btrfs_delete_one_dir_name(struct btrfs_trans_handle
*trans
,
1664 struct btrfs_root
*root
,
1665 struct btrfs_path
*path
,
1666 struct btrfs_dir_item
*di
);
1667 int btrfs_insert_xattr_item(struct btrfs_trans_handle
*trans
,
1668 struct btrfs_root
*root
, const char *name
,
1669 u16 name_len
, const void *data
, u16 data_len
,
1671 struct btrfs_dir_item
*btrfs_lookup_xattr(struct btrfs_trans_handle
*trans
,
1672 struct btrfs_root
*root
,
1673 struct btrfs_path
*path
, u64 dir
,
1674 const char *name
, u16 name_len
,
1678 int btrfs_insert_orphan_item(struct btrfs_trans_handle
*trans
,
1679 struct btrfs_root
*root
, u64 offset
);
1680 int btrfs_del_orphan_item(struct btrfs_trans_handle
*trans
,
1681 struct btrfs_root
*root
, u64 offset
);
1684 int btrfs_find_free_objectid(struct btrfs_trans_handle
*trans
,
1685 struct btrfs_root
*fs_root
,
1686 u64 dirid
, u64
*objectid
);
1687 int btrfs_find_highest_inode(struct btrfs_root
*fs_root
, u64
*objectid
);
1690 int btrfs_insert_inode_ref(struct btrfs_trans_handle
*trans
,
1691 struct btrfs_root
*root
,
1692 const char *name
, int name_len
,
1693 u64 inode_objectid
, u64 ref_objectid
, u64 index
);
1694 int btrfs_del_inode_ref(struct btrfs_trans_handle
*trans
,
1695 struct btrfs_root
*root
,
1696 const char *name
, int name_len
,
1697 u64 inode_objectid
, u64 ref_objectid
, u64
*index
);
1698 int btrfs_insert_empty_inode(struct btrfs_trans_handle
*trans
,
1699 struct btrfs_root
*root
,
1700 struct btrfs_path
*path
, u64 objectid
);
1701 int btrfs_lookup_inode(struct btrfs_trans_handle
*trans
, struct btrfs_root
1702 *root
, struct btrfs_path
*path
,
1703 struct btrfs_key
*location
, int mod
);
1706 int btrfs_lookup_bio_sums(struct btrfs_root
*root
, struct inode
*inode
,
1708 int btrfs_insert_file_extent(struct btrfs_trans_handle
*trans
,
1709 struct btrfs_root
*root
,
1710 u64 objectid
, u64 pos
, u64 disk_offset
,
1712 u64 num_bytes
, u64 offset
);
1713 int btrfs_lookup_file_extent(struct btrfs_trans_handle
*trans
,
1714 struct btrfs_root
*root
,
1715 struct btrfs_path
*path
, u64 objectid
,
1716 u64 bytenr
, int mod
);
1717 int btrfs_csum_file_blocks(struct btrfs_trans_handle
*trans
,
1718 struct btrfs_root
*root
, struct inode
*inode
,
1719 struct btrfs_ordered_sum
*sums
);
1720 int btrfs_csum_one_bio(struct btrfs_root
*root
, struct inode
*inode
,
1722 struct btrfs_csum_item
*btrfs_lookup_csum(struct btrfs_trans_handle
*trans
,
1723 struct btrfs_root
*root
,
1724 struct btrfs_path
*path
,
1725 u64 objectid
, u64 offset
,
1727 int btrfs_csum_truncate(struct btrfs_trans_handle
*trans
,
1728 struct btrfs_root
*root
, struct btrfs_path
*path
,
1732 /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */
1733 #if defined(ClearPageFsMisc) && !defined(ClearPageChecked)
1734 #define ClearPageChecked ClearPageFsMisc
1735 #define SetPageChecked SetPageFsMisc
1736 #define PageChecked PageFsMisc
1739 int btrfs_unlink_inode(struct btrfs_trans_handle
*trans
,
1740 struct btrfs_root
*root
,
1741 struct inode
*dir
, struct inode
*inode
,
1742 const char *name
, int name_len
);
1743 int btrfs_add_link(struct btrfs_trans_handle
*trans
,
1744 struct inode
*parent_inode
, struct inode
*inode
,
1745 const char *name
, int name_len
, int add_backref
, u64 index
);
1746 int btrfs_truncate_inode_items(struct btrfs_trans_handle
*trans
,
1747 struct btrfs_root
*root
,
1748 struct inode
*inode
, u64 new_size
,
1751 int btrfs_start_delalloc_inodes(struct btrfs_root
*root
);
1752 int btrfs_set_extent_delalloc(struct inode
*inode
, u64 start
, u64 end
);
1753 int btrfs_writepages(struct address_space
*mapping
,
1754 struct writeback_control
*wbc
);
1755 int btrfs_create_subvol_root(struct btrfs_root
*new_root
,
1756 struct btrfs_trans_handle
*trans
, u64 new_dirid
,
1757 struct btrfs_block_group_cache
*block_group
);
1759 void btrfs_invalidate_dcache_root(struct btrfs_root
*root
, char *name
,
1762 int btrfs_merge_bio_hook(struct page
*page
, unsigned long offset
,
1763 size_t size
, struct bio
*bio
);
1765 static inline void dec_i_blocks(struct inode
*inode
, u64 dec
)
1768 if (dec
<= inode
->i_blocks
)
1769 inode
->i_blocks
-= dec
;
1771 inode
->i_blocks
= 0;
1774 unsigned long btrfs_force_ra(struct address_space
*mapping
,
1775 struct file_ra_state
*ra
, struct file
*file
,
1776 pgoff_t offset
, pgoff_t last_index
);
1777 int btrfs_check_free_space(struct btrfs_root
*root
, u64 num_required
,
1779 int btrfs_page_mkwrite(struct vm_area_struct
*vma
, struct page
*page
);
1780 int btrfs_readpage(struct file
*file
, struct page
*page
);
1781 void btrfs_delete_inode(struct inode
*inode
);
1782 void btrfs_put_inode(struct inode
*inode
);
1783 void btrfs_read_locked_inode(struct inode
*inode
);
1784 int btrfs_write_inode(struct inode
*inode
, int wait
);
1785 void btrfs_dirty_inode(struct inode
*inode
);
1786 struct inode
*btrfs_alloc_inode(struct super_block
*sb
);
1787 void btrfs_destroy_inode(struct inode
*inode
);
1788 int btrfs_init_cachep(void);
1789 void btrfs_destroy_cachep(void);
1790 long btrfs_ioctl_trans_end(struct file
*file
);
1791 struct inode
*btrfs_iget_locked(struct super_block
*s
, u64 objectid
,
1792 struct btrfs_root
*root
);
1793 struct inode
*btrfs_iget(struct super_block
*s
, struct btrfs_key
*location
,
1794 struct btrfs_root
*root
, int *is_new
);
1795 int btrfs_commit_write(struct file
*file
, struct page
*page
,
1796 unsigned from
, unsigned to
);
1797 struct extent_map
*btrfs_get_extent(struct inode
*inode
, struct page
*page
,
1798 size_t page_offset
, u64 start
, u64 end
,
1800 int btrfs_update_inode(struct btrfs_trans_handle
*trans
,
1801 struct btrfs_root
*root
,
1802 struct inode
*inode
);
1805 long btrfs_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
);
1808 int btrfs_sync_file(struct file
*file
, struct dentry
*dentry
, int datasync
);
1809 int btrfs_drop_extent_cache(struct inode
*inode
, u64 start
, u64 end
);
1810 int btrfs_check_file(struct btrfs_root
*root
, struct inode
*inode
);
1811 extern struct file_operations btrfs_file_operations
;
1812 int btrfs_drop_extents(struct btrfs_trans_handle
*trans
,
1813 struct btrfs_root
*root
, struct inode
*inode
,
1814 u64 start
, u64 end
, u64 inline_limit
, u64
*hint_block
);
1815 int btrfs_release_file(struct inode
*inode
, struct file
*file
);
1818 int btrfs_defrag_leaves(struct btrfs_trans_handle
*trans
,
1819 struct btrfs_root
*root
, int cache_only
);
1822 int btrfs_init_sysfs(void);
1823 void btrfs_exit_sysfs(void);
1824 int btrfs_sysfs_add_super(struct btrfs_fs_info
*fs
);
1825 int btrfs_sysfs_add_root(struct btrfs_root
*root
);
1826 void btrfs_sysfs_del_root(struct btrfs_root
*root
);
1827 void btrfs_sysfs_del_super(struct btrfs_fs_info
*root
);
1830 ssize_t
btrfs_listxattr(struct dentry
*dentry
, char *buffer
, size_t size
);
1833 u64
btrfs_parse_size(char *str
);
1834 int btrfs_parse_options(struct btrfs_root
*root
, char *options
);
1835 int btrfs_sync_fs(struct super_block
*sb
, int wait
);
1838 int btrfs_check_acl(struct inode
*inode
, int mask
);
1839 int btrfs_init_acl(struct inode
*inode
, struct inode
*dir
);
1840 int btrfs_acl_chmod(struct inode
*inode
);
1842 /* free-space-cache.c */
1843 int btrfs_add_free_space(struct btrfs_block_group_cache
*block_group
,
1844 u64 bytenr
, u64 size
);
1845 int btrfs_remove_free_space(struct btrfs_block_group_cache
*block_group
,
1846 u64 bytenr
, u64 size
);
1847 void btrfs_remove_free_space_cache(struct btrfs_block_group_cache
1849 struct btrfs_free_space
*btrfs_find_free_space(struct btrfs_block_group_cache
1850 *block_group
, u64 offset
,
1852 void btrfs_dump_free_space(struct btrfs_block_group_cache
*block_group
,
1854 u64
btrfs_block_group_free_space(struct btrfs_block_group_cache
*block_group
);