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 "extent_io.h"
31 #include "extent_map.h"
32 #include "async-thread.h"
34 struct btrfs_trans_handle
;
35 struct btrfs_transaction
;
36 extern struct kmem_cache
*btrfs_trans_handle_cachep
;
37 extern struct kmem_cache
*btrfs_transaction_cachep
;
38 extern struct kmem_cache
*btrfs_bit_radix_cachep
;
39 extern struct kmem_cache
*btrfs_path_cachep
;
40 struct btrfs_ordered_sum
;
42 #define BTRFS_MAGIC "_BBRfS_M"
44 #define BTRFS_ACL_NOT_CACHED ((void *)-1)
47 # define BTRFS_MAX_LEVEL 7
49 # define BTRFS_MAX_LEVEL 8
52 /* holds pointers to all of the tree roots */
53 #define BTRFS_ROOT_TREE_OBJECTID 1ULL
55 /* stores information about which extents are in use, and reference counts */
56 #define BTRFS_EXTENT_TREE_OBJECTID 2ULL
59 * chunk tree stores translations from logical -> physical block numbering
60 * the super block points to the chunk tree
62 #define BTRFS_CHUNK_TREE_OBJECTID 3ULL
65 * stores information about which areas of a given device are in use.
66 * one per device. The tree of tree roots points to the device tree
68 #define BTRFS_DEV_TREE_OBJECTID 4ULL
70 /* one per subvolume, storing files and directories */
71 #define BTRFS_FS_TREE_OBJECTID 5ULL
73 /* directory objectid inside the root tree */
74 #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL
76 /* orhpan objectid for tracking unlinked/truncated files */
77 #define BTRFS_ORPHAN_OBJECTID -5ULL
79 /* does write ahead logging to speed up fsyncs */
80 #define BTRFS_TREE_LOG_OBJECTID -6ULL
81 #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL
83 /* for space balancing */
84 #define BTRFS_TREE_RELOC_OBJECTID -8ULL
85 #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL
87 /* dummy objectid represents multiple objectids */
88 #define BTRFS_MULTIPLE_OBJECTIDS -255ULL
91 * All files have objectids in this range.
93 #define BTRFS_FIRST_FREE_OBJECTID 256ULL
94 #define BTRFS_LAST_FREE_OBJECTID -256ULL
95 #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL
99 * the device items go into the chunk tree. The key is in the form
100 * [ 1 BTRFS_DEV_ITEM_KEY device_id ]
102 #define BTRFS_DEV_ITEMS_OBJECTID 1ULL
105 * we can actually store much bigger names, but lets not confuse the rest
108 #define BTRFS_NAME_LEN 255
110 /* 32 bytes in various csum fields */
111 #define BTRFS_CSUM_SIZE 32
112 /* four bytes for CRC32 */
113 #define BTRFS_CRC32_SIZE 4
114 #define BTRFS_EMPTY_DIR_SIZE 0
116 #define BTRFS_FT_UNKNOWN 0
117 #define BTRFS_FT_REG_FILE 1
118 #define BTRFS_FT_DIR 2
119 #define BTRFS_FT_CHRDEV 3
120 #define BTRFS_FT_BLKDEV 4
121 #define BTRFS_FT_FIFO 5
122 #define BTRFS_FT_SOCK 6
123 #define BTRFS_FT_SYMLINK 7
124 #define BTRFS_FT_XATTR 8
125 #define BTRFS_FT_MAX 9
128 * the key defines the order in the tree, and so it also defines (optimal)
129 * block layout. objectid corresonds to the inode number. The flags
130 * tells us things about the object, and is a kind of stream selector.
131 * so for a given inode, keys with flags of 1 might refer to the inode
132 * data, flags of 2 may point to file data in the btree and flags == 3
133 * may point to extents.
135 * offset is the starting byte offset for this key in the stream.
137 * btrfs_disk_key is in disk byte order. struct btrfs_key is always
138 * in cpu native order. Otherwise they are identical and their sizes
139 * should be the same (ie both packed)
141 struct btrfs_disk_key
{
145 } __attribute__ ((__packed__
));
151 } __attribute__ ((__packed__
));
153 struct btrfs_mapping_tree
{
154 struct extent_map_tree map_tree
;
157 #define BTRFS_UUID_SIZE 16
158 struct btrfs_dev_item
{
159 /* the internal btrfs device id */
162 /* size of the device */
168 /* optimal io alignment for this device */
171 /* optimal io width for this device */
174 /* minimal io size for this device */
177 /* type and info about this device */
180 /* grouping information for allocation decisions */
183 /* seek speed 0-100 where 100 is fastest */
186 /* bandwidth 0-100 where 100 is fastest */
189 /* btrfs generated uuid for this device */
190 u8 uuid
[BTRFS_UUID_SIZE
];
191 } __attribute__ ((__packed__
));
193 struct btrfs_stripe
{
196 u8 dev_uuid
[BTRFS_UUID_SIZE
];
197 } __attribute__ ((__packed__
));
200 /* size of this chunk in bytes */
203 /* objectid of the root referencing this chunk */
209 /* optimal io alignment for this chunk */
212 /* optimal io width for this chunk */
215 /* minimal io size for this chunk */
218 /* 2^16 stripes is quite a lot, a second limit is the size of a single
223 /* sub stripes only matter for raid10 */
225 struct btrfs_stripe stripe
;
226 /* additional stripes go here */
227 } __attribute__ ((__packed__
));
229 static inline unsigned long btrfs_chunk_item_size(int num_stripes
)
231 BUG_ON(num_stripes
== 0);
232 return sizeof(struct btrfs_chunk
) +
233 sizeof(struct btrfs_stripe
) * (num_stripes
- 1);
236 #define BTRFS_FSID_SIZE 16
237 #define BTRFS_HEADER_FLAG_WRITTEN (1 << 0)
240 * every tree block (leaf or node) starts with this header.
242 struct btrfs_header
{
243 /* these first four must match the super block */
244 u8 csum
[BTRFS_CSUM_SIZE
];
245 u8 fsid
[BTRFS_FSID_SIZE
]; /* FS specific uuid */
246 __le64 bytenr
; /* which block this node is supposed to live in */
249 /* allowed to be different from the super from here on down */
250 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
255 } __attribute__ ((__packed__
));
257 #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \
258 sizeof(struct btrfs_header)) / \
259 sizeof(struct btrfs_key_ptr))
260 #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header))
261 #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize))
262 #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \
263 sizeof(struct btrfs_item) - \
264 sizeof(struct btrfs_file_extent_item))
268 * this is a very generous portion of the super block, giving us
269 * room to translate 14 chunks with 3 stripes each.
271 #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048
272 #define BTRFS_LABEL_SIZE 256
275 * the super block basically lists the main trees of the FS
276 * it currently lacks any block count etc etc
278 struct btrfs_super_block
{
279 u8 csum
[BTRFS_CSUM_SIZE
];
280 /* the first 4 fields must match struct btrfs_header */
281 u8 fsid
[16]; /* FS specific uuid */
282 __le64 bytenr
; /* this block number */
285 /* allowed to be different from the btrfs_header from here own down */
293 __le64 root_dir_objectid
;
299 __le32 sys_chunk_array_size
;
303 struct btrfs_dev_item dev_item
;
304 char label
[BTRFS_LABEL_SIZE
];
305 u8 sys_chunk_array
[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE
];
306 } __attribute__ ((__packed__
));
309 * A leaf is full of items. offset and size tell us where to find
310 * the item in the leaf (relative to the start of the data area)
313 struct btrfs_disk_key key
;
316 } __attribute__ ((__packed__
));
319 * leaves have an item area and a data area:
320 * [item0, item1....itemN] [free space] [dataN...data1, data0]
322 * The data is separate from the items to get the keys closer together
326 struct btrfs_header header
;
327 struct btrfs_item items
[];
328 } __attribute__ ((__packed__
));
331 * all non-leaf blocks are nodes, they hold only keys and pointers to
334 struct btrfs_key_ptr
{
335 struct btrfs_disk_key key
;
338 } __attribute__ ((__packed__
));
341 struct btrfs_header header
;
342 struct btrfs_key_ptr ptrs
[];
343 } __attribute__ ((__packed__
));
346 * btrfs_paths remember the path taken from the root down to the leaf.
347 * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point
348 * to any other levels that are present.
350 * The slots array records the index of the item or block pointer
351 * used while walking the tree.
354 struct extent_buffer
*nodes
[BTRFS_MAX_LEVEL
];
355 int slots
[BTRFS_MAX_LEVEL
];
356 /* if there is real range locking, this locks field will change */
357 int locks
[BTRFS_MAX_LEVEL
];
359 /* keep some upper locks as we walk down */
366 * items in the extent btree are used to record the objectid of the
367 * owner of the block and the number of references
369 struct btrfs_extent_item
{
371 } __attribute__ ((__packed__
));
373 struct btrfs_extent_ref
{
378 } __attribute__ ((__packed__
));
380 /* dev extents record free space on individual devices. The owner
381 * field points back to the chunk allocation mapping tree that allocated
382 * the extent. The chunk tree uuid field is a way to double check the owner
384 struct btrfs_dev_extent
{
386 __le64 chunk_objectid
;
389 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
390 } __attribute__ ((__packed__
));
392 struct btrfs_inode_ref
{
396 } __attribute__ ((__packed__
));
398 struct btrfs_timespec
{
401 } __attribute__ ((__packed__
));
404 * there is no padding here on purpose. If you want to extent the inode,
405 * make a new item type
407 struct btrfs_inode_item
{
408 /* nfs style generation number */
410 /* transid that last touched this inode */
422 struct btrfs_timespec atime
;
423 struct btrfs_timespec ctime
;
424 struct btrfs_timespec mtime
;
425 struct btrfs_timespec otime
;
426 } __attribute__ ((__packed__
));
428 struct btrfs_dir_log_item
{
430 } __attribute__ ((__packed__
));
432 struct btrfs_dir_item
{
433 struct btrfs_disk_key location
;
438 } __attribute__ ((__packed__
));
440 struct btrfs_root_item
{
441 struct btrfs_inode_item inode
;
448 struct btrfs_disk_key drop_progress
;
451 } __attribute__ ((__packed__
));
453 #define BTRFS_FILE_EXTENT_REG 0
454 #define BTRFS_FILE_EXTENT_INLINE 1
456 struct btrfs_file_extent_item
{
460 * disk space consumed by the extent, checksum blocks are included
464 __le64 disk_num_bytes
;
466 * the logical offset in file blocks (no csums)
467 * this extent record is for. This allows a file extent to point
468 * into the middle of an existing extent on disk, sharing it
469 * between two snapshots (useful if some bytes in the middle of the
470 * extent have changed
474 * the logical number of file blocks (no csums included)
477 } __attribute__ ((__packed__
));
479 struct btrfs_csum_item
{
481 } __attribute__ ((__packed__
));
483 /* different types of block groups (and chunks) */
484 #define BTRFS_BLOCK_GROUP_DATA (1 << 0)
485 #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1)
486 #define BTRFS_BLOCK_GROUP_METADATA (1 << 2)
487 #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3)
488 #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4)
489 #define BTRFS_BLOCK_GROUP_DUP (1 << 5)
490 #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6)
492 struct btrfs_block_group_item
{
494 __le64 chunk_objectid
;
496 } __attribute__ ((__packed__
));
498 struct btrfs_space_info
{
506 struct list_head list
;
508 /* for block groups in our same type */
509 struct list_head block_groups
;
513 struct btrfs_free_space
{
514 struct rb_node bytes_index
;
515 struct rb_node offset_index
;
520 struct btrfs_block_group_cache
{
521 struct btrfs_key key
;
522 struct btrfs_block_group_item item
;
531 struct btrfs_space_info
*space_info
;
533 /* free space cache stuff */
534 struct rb_root free_space_bytes
;
535 struct rb_root free_space_offset
;
537 /* block group cache stuff */
538 struct rb_node cache_node
;
540 /* for block groups in the same raid type */
541 struct list_head list
;
544 struct btrfs_leaf_ref_tree
{
546 struct list_head list
;
551 struct btrfs_fs_devices
;
552 struct btrfs_fs_info
{
553 u8 fsid
[BTRFS_FSID_SIZE
];
554 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
555 struct btrfs_root
*extent_root
;
556 struct btrfs_root
*tree_root
;
557 struct btrfs_root
*chunk_root
;
558 struct btrfs_root
*dev_root
;
560 /* the log root tree is a directory of all the other log roots */
561 struct btrfs_root
*log_root_tree
;
562 struct radix_tree_root fs_roots_radix
;
564 /* block group cache stuff */
565 spinlock_t block_group_cache_lock
;
566 struct rb_root block_group_cache_tree
;
568 struct extent_io_tree pinned_extents
;
569 struct extent_io_tree pending_del
;
570 struct extent_io_tree extent_ins
;
572 /* logical->physical extent mapping */
573 struct btrfs_mapping_tree mapping_tree
;
576 u64 last_trans_committed
;
577 u64 last_trans_new_blockgroup
;
578 u64 open_ioctl_trans
;
579 unsigned long mount_opt
;
583 struct btrfs_transaction
*running_transaction
;
584 wait_queue_head_t transaction_throttle
;
585 wait_queue_head_t transaction_wait
;
586 wait_queue_head_t async_submit_wait
;
588 wait_queue_head_t tree_log_wait
;
590 struct btrfs_super_block super_copy
;
591 struct btrfs_super_block super_for_commit
;
592 struct block_device
*__bdev
;
593 struct super_block
*sb
;
594 struct inode
*btree_inode
;
595 struct backing_dev_info bdi
;
596 spinlock_t hash_lock
;
597 struct mutex trans_mutex
;
598 struct mutex tree_log_mutex
;
599 struct mutex transaction_kthread_mutex
;
600 struct mutex cleaner_mutex
;
601 struct mutex alloc_mutex
;
602 struct mutex chunk_mutex
;
603 struct mutex drop_mutex
;
604 struct mutex volume_mutex
;
605 struct mutex tree_reloc_mutex
;
606 struct list_head trans_list
;
607 struct list_head hashers
;
608 struct list_head dead_roots
;
610 atomic_t nr_async_submits
;
611 atomic_t async_submit_draining
;
612 atomic_t nr_async_bios
;
613 atomic_t tree_log_writers
;
614 atomic_t tree_log_commit
;
615 unsigned long tree_log_batch
;
616 u64 tree_log_transid
;
619 * this is used by the balancing code to wait for all the pending
622 spinlock_t ordered_extent_lock
;
623 struct list_head ordered_extents
;
624 struct list_head delalloc_inodes
;
627 * there is a pool of worker threads for checksumming during writes
628 * and a pool for checksumming after reads. This is because readers
629 * can run with FS locks held, and the writers may be waiting for
630 * those locks. We don't want ordering in the pending list to cause
631 * deadlocks, and so the two are serviced separately.
633 * A third pool does submit_bio to avoid deadlocking with the other
636 struct btrfs_workers workers
;
637 struct btrfs_workers endio_workers
;
638 struct btrfs_workers endio_write_workers
;
639 struct btrfs_workers submit_workers
;
641 * fixup workers take dirty pages that didn't properly go through
642 * the cow mechanism and make them safe to write. It happens
643 * for the sys_munmap function call path
645 struct btrfs_workers fixup_workers
;
646 struct task_struct
*transaction_kthread
;
647 struct task_struct
*cleaner_kthread
;
648 int thread_pool_size
;
650 /* tree relocation relocated fields */
651 struct extent_io_tree reloc_mapping_tree
;
652 struct list_head dead_reloc_roots
;
653 struct btrfs_leaf_ref_tree reloc_ref_tree
;
654 struct btrfs_leaf_ref_tree shared_ref_tree
;
656 struct kobject super_kobj
;
657 struct completion kobj_unregister
;
660 int log_root_recovering
;
662 atomic_t throttle_gen
;
665 struct list_head dirty_cowonly_roots
;
667 struct btrfs_fs_devices
*fs_devices
;
668 struct list_head space_info
;
669 spinlock_t delalloc_lock
;
670 spinlock_t new_trans_lock
;
675 spinlock_t ref_cache_lock
;
676 u64 total_ref_cache_size
;
678 u64 avail_data_alloc_bits
;
679 u64 avail_metadata_alloc_bits
;
680 u64 avail_system_alloc_bits
;
681 u64 data_alloc_profile
;
682 u64 metadata_alloc_profile
;
683 u64 system_alloc_profile
;
689 * in ram representation of the tree. extent_root is used for all allocations
690 * and for the extent tree extent_root root.
692 struct btrfs_dirty_root
;
694 struct extent_buffer
*node
;
696 /* the node lock is held while changing the node pointer */
697 spinlock_t node_lock
;
699 struct extent_buffer
*commit_root
;
700 struct btrfs_leaf_ref_tree
*ref_tree
;
701 struct btrfs_leaf_ref_tree ref_tree_struct
;
702 struct btrfs_dirty_root
*dirty_root
;
703 struct btrfs_root
*log_root
;
704 struct btrfs_root
*reloc_root
;
706 struct btrfs_root_item root_item
;
707 struct btrfs_key root_key
;
708 struct btrfs_fs_info
*fs_info
;
710 struct extent_io_tree dirty_log_pages
;
712 struct kobject root_kobj
;
713 struct completion kobj_unregister
;
714 struct mutex objectid_mutex
;
715 struct mutex log_mutex
;
720 /* data allocations are done in sectorsize units */
723 /* node allocations are done in nodesize units */
726 /* leaf allocations are done in leafsize units */
733 u64 last_inode_alloc
;
736 u64 defrag_trans_start
;
737 struct btrfs_key defrag_progress
;
738 struct btrfs_key defrag_max
;
744 /* the dirty list is only used by non-reference counted roots */
745 struct list_head dirty_list
;
747 spinlock_t list_lock
;
748 struct list_head dead_list
;
749 struct list_head orphan_list
;
754 * inode items have the data typically returned from stat and store other
755 * info about object characteristics. There is one for every file and dir in
758 #define BTRFS_INODE_ITEM_KEY 1
759 #define BTRFS_INODE_REF_KEY 2
760 #define BTRFS_XATTR_ITEM_KEY 8
761 #define BTRFS_ORPHAN_ITEM_KEY 9
762 /* reserve 2-15 close to the inode for later flexibility */
765 * dir items are the name -> inode pointers in a directory. There is one
766 * for every name in a directory.
768 #define BTRFS_DIR_LOG_ITEM_KEY 14
769 #define BTRFS_DIR_LOG_INDEX_KEY 15
770 #define BTRFS_DIR_ITEM_KEY 16
771 #define BTRFS_DIR_INDEX_KEY 17
773 * extent data is for file data
775 #define BTRFS_EXTENT_DATA_KEY 18
777 * csum items have the checksums for data in the extents
779 #define BTRFS_CSUM_ITEM_KEY 19
782 /* reserve 21-31 for other file/dir stuff */
785 * root items point to tree roots. There are typically in the root
786 * tree used by the super block to find all the other trees
788 #define BTRFS_ROOT_ITEM_KEY 32
790 * extent items are in the extent map tree. These record which blocks
791 * are used, and how many references there are to each block
793 #define BTRFS_EXTENT_ITEM_KEY 33
794 #define BTRFS_EXTENT_REF_KEY 34
797 * block groups give us hints into the extent allocation trees. Which
798 * blocks are free etc etc
800 #define BTRFS_BLOCK_GROUP_ITEM_KEY 50
802 #define BTRFS_DEV_EXTENT_KEY 75
803 #define BTRFS_DEV_ITEM_KEY 76
804 #define BTRFS_CHUNK_ITEM_KEY 77
807 * string items are for debugging. They just store a short string of
810 #define BTRFS_STRING_ITEM_KEY 253
812 #define BTRFS_MOUNT_NODATASUM (1 << 0)
813 #define BTRFS_MOUNT_NODATACOW (1 << 1)
814 #define BTRFS_MOUNT_NOBARRIER (1 << 2)
815 #define BTRFS_MOUNT_SSD (1 << 3)
816 #define BTRFS_MOUNT_DEGRADED (1 << 4)
818 #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt)
819 #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt)
820 #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \
825 #define BTRFS_INODE_NODATASUM (1 << 0)
826 #define BTRFS_INODE_NODATACOW (1 << 1)
827 #define BTRFS_INODE_READONLY (1 << 2)
828 #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \
830 #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \
832 #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \
834 /* some macros to generate set/get funcs for the struct fields. This
835 * assumes there is a lefoo_to_cpu for every type, so lets make a simple
838 #define le8_to_cpu(v) (v)
839 #define cpu_to_le8(v) (v)
842 #define read_eb_member(eb, ptr, type, member, result) ( \
843 read_extent_buffer(eb, (char *)(result), \
844 ((unsigned long)(ptr)) + \
845 offsetof(type, member), \
846 sizeof(((type *)0)->member)))
848 #define write_eb_member(eb, ptr, type, member, result) ( \
849 write_extent_buffer(eb, (char *)(result), \
850 ((unsigned long)(ptr)) + \
851 offsetof(type, member), \
852 sizeof(((type *)0)->member)))
854 #ifndef BTRFS_SETGET_FUNCS
855 #define BTRFS_SETGET_FUNCS(name, type, member, bits) \
856 u##bits btrfs_##name(struct extent_buffer *eb, type *s); \
857 void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val);
860 #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
861 static inline u##bits btrfs_##name(struct extent_buffer *eb) \
863 type *p = kmap_atomic(eb->first_page, KM_USER0); \
864 u##bits res = le##bits##_to_cpu(p->member); \
865 kunmap_atomic(p, KM_USER0); \
868 static inline void btrfs_set_##name(struct extent_buffer *eb, \
871 type *p = kmap_atomic(eb->first_page, KM_USER0); \
872 p->member = cpu_to_le##bits(val); \
873 kunmap_atomic(p, KM_USER0); \
876 #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
877 static inline u##bits btrfs_##name(type *s) \
879 return le##bits##_to_cpu(s->member); \
881 static inline void btrfs_set_##name(type *s, u##bits val) \
883 s->member = cpu_to_le##bits(val); \
886 BTRFS_SETGET_FUNCS(device_type
, struct btrfs_dev_item
, type
, 64);
887 BTRFS_SETGET_FUNCS(device_total_bytes
, struct btrfs_dev_item
, total_bytes
, 64);
888 BTRFS_SETGET_FUNCS(device_bytes_used
, struct btrfs_dev_item
, bytes_used
, 64);
889 BTRFS_SETGET_FUNCS(device_io_align
, struct btrfs_dev_item
, io_align
, 32);
890 BTRFS_SETGET_FUNCS(device_io_width
, struct btrfs_dev_item
, io_width
, 32);
891 BTRFS_SETGET_FUNCS(device_sector_size
, struct btrfs_dev_item
, sector_size
, 32);
892 BTRFS_SETGET_FUNCS(device_id
, struct btrfs_dev_item
, devid
, 64);
893 BTRFS_SETGET_FUNCS(device_group
, struct btrfs_dev_item
, dev_group
, 32);
894 BTRFS_SETGET_FUNCS(device_seek_speed
, struct btrfs_dev_item
, seek_speed
, 8);
895 BTRFS_SETGET_FUNCS(device_bandwidth
, struct btrfs_dev_item
, bandwidth
, 8);
897 BTRFS_SETGET_STACK_FUNCS(stack_device_type
, struct btrfs_dev_item
, type
, 64);
898 BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes
, struct btrfs_dev_item
,
900 BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used
, struct btrfs_dev_item
,
902 BTRFS_SETGET_STACK_FUNCS(stack_device_io_align
, struct btrfs_dev_item
,
904 BTRFS_SETGET_STACK_FUNCS(stack_device_io_width
, struct btrfs_dev_item
,
906 BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size
, struct btrfs_dev_item
,
908 BTRFS_SETGET_STACK_FUNCS(stack_device_id
, struct btrfs_dev_item
, devid
, 64);
909 BTRFS_SETGET_STACK_FUNCS(stack_device_group
, struct btrfs_dev_item
,
911 BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed
, struct btrfs_dev_item
,
913 BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth
, struct btrfs_dev_item
,
916 static inline char *btrfs_device_uuid(struct btrfs_dev_item
*d
)
918 return (char *)d
+ offsetof(struct btrfs_dev_item
, uuid
);
921 BTRFS_SETGET_FUNCS(chunk_length
, struct btrfs_chunk
, length
, 64);
922 BTRFS_SETGET_FUNCS(chunk_owner
, struct btrfs_chunk
, owner
, 64);
923 BTRFS_SETGET_FUNCS(chunk_stripe_len
, struct btrfs_chunk
, stripe_len
, 64);
924 BTRFS_SETGET_FUNCS(chunk_io_align
, struct btrfs_chunk
, io_align
, 32);
925 BTRFS_SETGET_FUNCS(chunk_io_width
, struct btrfs_chunk
, io_width
, 32);
926 BTRFS_SETGET_FUNCS(chunk_sector_size
, struct btrfs_chunk
, sector_size
, 32);
927 BTRFS_SETGET_FUNCS(chunk_type
, struct btrfs_chunk
, type
, 64);
928 BTRFS_SETGET_FUNCS(chunk_num_stripes
, struct btrfs_chunk
, num_stripes
, 16);
929 BTRFS_SETGET_FUNCS(chunk_sub_stripes
, struct btrfs_chunk
, sub_stripes
, 16);
930 BTRFS_SETGET_FUNCS(stripe_devid
, struct btrfs_stripe
, devid
, 64);
931 BTRFS_SETGET_FUNCS(stripe_offset
, struct btrfs_stripe
, offset
, 64);
933 static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe
*s
)
935 return (char *)s
+ offsetof(struct btrfs_stripe
, dev_uuid
);
938 BTRFS_SETGET_STACK_FUNCS(stack_chunk_length
, struct btrfs_chunk
, length
, 64);
939 BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner
, struct btrfs_chunk
, owner
, 64);
940 BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len
, struct btrfs_chunk
,
942 BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align
, struct btrfs_chunk
,
944 BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width
, struct btrfs_chunk
,
946 BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size
, struct btrfs_chunk
,
948 BTRFS_SETGET_STACK_FUNCS(stack_chunk_type
, struct btrfs_chunk
, type
, 64);
949 BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes
, struct btrfs_chunk
,
951 BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes
, struct btrfs_chunk
,
953 BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid
, struct btrfs_stripe
, devid
, 64);
954 BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset
, struct btrfs_stripe
, offset
, 64);
956 static inline struct btrfs_stripe
*btrfs_stripe_nr(struct btrfs_chunk
*c
,
959 unsigned long offset
= (unsigned long)c
;
960 offset
+= offsetof(struct btrfs_chunk
, stripe
);
961 offset
+= nr
* sizeof(struct btrfs_stripe
);
962 return (struct btrfs_stripe
*)offset
;
965 static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk
*c
, int nr
)
967 return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c
, nr
));
970 static inline u64
btrfs_stripe_offset_nr(struct extent_buffer
*eb
,
971 struct btrfs_chunk
*c
, int nr
)
973 return btrfs_stripe_offset(eb
, btrfs_stripe_nr(c
, nr
));
976 static inline void btrfs_set_stripe_offset_nr(struct extent_buffer
*eb
,
977 struct btrfs_chunk
*c
, int nr
,
980 btrfs_set_stripe_offset(eb
, btrfs_stripe_nr(c
, nr
), val
);
983 static inline u64
btrfs_stripe_devid_nr(struct extent_buffer
*eb
,
984 struct btrfs_chunk
*c
, int nr
)
986 return btrfs_stripe_devid(eb
, btrfs_stripe_nr(c
, nr
));
989 static inline void btrfs_set_stripe_devid_nr(struct extent_buffer
*eb
,
990 struct btrfs_chunk
*c
, int nr
,
993 btrfs_set_stripe_devid(eb
, btrfs_stripe_nr(c
, nr
), val
);
996 /* struct btrfs_block_group_item */
997 BTRFS_SETGET_STACK_FUNCS(block_group_used
, struct btrfs_block_group_item
,
999 BTRFS_SETGET_FUNCS(disk_block_group_used
, struct btrfs_block_group_item
,
1001 BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid
,
1002 struct btrfs_block_group_item
, chunk_objectid
, 64);
1004 BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid
,
1005 struct btrfs_block_group_item
, chunk_objectid
, 64);
1006 BTRFS_SETGET_FUNCS(disk_block_group_flags
,
1007 struct btrfs_block_group_item
, flags
, 64);
1008 BTRFS_SETGET_STACK_FUNCS(block_group_flags
,
1009 struct btrfs_block_group_item
, flags
, 64);
1011 /* struct btrfs_inode_ref */
1012 BTRFS_SETGET_FUNCS(inode_ref_name_len
, struct btrfs_inode_ref
, name_len
, 16);
1013 BTRFS_SETGET_FUNCS(inode_ref_index
, struct btrfs_inode_ref
, index
, 64);
1015 /* struct btrfs_inode_item */
1016 BTRFS_SETGET_FUNCS(inode_generation
, struct btrfs_inode_item
, generation
, 64);
1017 BTRFS_SETGET_FUNCS(inode_transid
, struct btrfs_inode_item
, transid
, 64);
1018 BTRFS_SETGET_FUNCS(inode_size
, struct btrfs_inode_item
, size
, 64);
1019 BTRFS_SETGET_FUNCS(inode_nbytes
, struct btrfs_inode_item
, nbytes
, 64);
1020 BTRFS_SETGET_FUNCS(inode_block_group
, struct btrfs_inode_item
, block_group
, 64);
1021 BTRFS_SETGET_FUNCS(inode_nlink
, struct btrfs_inode_item
, nlink
, 32);
1022 BTRFS_SETGET_FUNCS(inode_uid
, struct btrfs_inode_item
, uid
, 32);
1023 BTRFS_SETGET_FUNCS(inode_gid
, struct btrfs_inode_item
, gid
, 32);
1024 BTRFS_SETGET_FUNCS(inode_mode
, struct btrfs_inode_item
, mode
, 32);
1025 BTRFS_SETGET_FUNCS(inode_rdev
, struct btrfs_inode_item
, rdev
, 64);
1026 BTRFS_SETGET_FUNCS(inode_flags
, struct btrfs_inode_item
, flags
, 16);
1027 BTRFS_SETGET_FUNCS(inode_compat_flags
, struct btrfs_inode_item
,
1030 static inline struct btrfs_timespec
*
1031 btrfs_inode_atime(struct btrfs_inode_item
*inode_item
)
1033 unsigned long ptr
= (unsigned long)inode_item
;
1034 ptr
+= offsetof(struct btrfs_inode_item
, atime
);
1035 return (struct btrfs_timespec
*)ptr
;
1038 static inline struct btrfs_timespec
*
1039 btrfs_inode_mtime(struct btrfs_inode_item
*inode_item
)
1041 unsigned long ptr
= (unsigned long)inode_item
;
1042 ptr
+= offsetof(struct btrfs_inode_item
, mtime
);
1043 return (struct btrfs_timespec
*)ptr
;
1046 static inline struct btrfs_timespec
*
1047 btrfs_inode_ctime(struct btrfs_inode_item
*inode_item
)
1049 unsigned long ptr
= (unsigned long)inode_item
;
1050 ptr
+= offsetof(struct btrfs_inode_item
, ctime
);
1051 return (struct btrfs_timespec
*)ptr
;
1054 static inline struct btrfs_timespec
*
1055 btrfs_inode_otime(struct btrfs_inode_item
*inode_item
)
1057 unsigned long ptr
= (unsigned long)inode_item
;
1058 ptr
+= offsetof(struct btrfs_inode_item
, otime
);
1059 return (struct btrfs_timespec
*)ptr
;
1062 BTRFS_SETGET_FUNCS(timespec_sec
, struct btrfs_timespec
, sec
, 64);
1063 BTRFS_SETGET_FUNCS(timespec_nsec
, struct btrfs_timespec
, nsec
, 32);
1065 /* struct btrfs_dev_extent */
1066 BTRFS_SETGET_FUNCS(dev_extent_chunk_tree
, struct btrfs_dev_extent
,
1068 BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid
, struct btrfs_dev_extent
,
1069 chunk_objectid
, 64);
1070 BTRFS_SETGET_FUNCS(dev_extent_chunk_offset
, struct btrfs_dev_extent
,
1072 BTRFS_SETGET_FUNCS(dev_extent_length
, struct btrfs_dev_extent
, length
, 64);
1074 static inline u8
*btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent
*dev
)
1076 unsigned long ptr
= offsetof(struct btrfs_dev_extent
, chunk_tree_uuid
);
1077 return (u8
*)((unsigned long)dev
+ ptr
);
1080 /* struct btrfs_extent_ref */
1081 BTRFS_SETGET_FUNCS(ref_root
, struct btrfs_extent_ref
, root
, 64);
1082 BTRFS_SETGET_FUNCS(ref_generation
, struct btrfs_extent_ref
, generation
, 64);
1083 BTRFS_SETGET_FUNCS(ref_objectid
, struct btrfs_extent_ref
, objectid
, 64);
1084 BTRFS_SETGET_FUNCS(ref_num_refs
, struct btrfs_extent_ref
, num_refs
, 32);
1086 BTRFS_SETGET_STACK_FUNCS(stack_ref_root
, struct btrfs_extent_ref
, root
, 64);
1087 BTRFS_SETGET_STACK_FUNCS(stack_ref_generation
, struct btrfs_extent_ref
,
1089 BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid
, struct btrfs_extent_ref
,
1091 BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs
, struct btrfs_extent_ref
,
1094 /* struct btrfs_extent_item */
1095 BTRFS_SETGET_FUNCS(extent_refs
, struct btrfs_extent_item
, refs
, 32);
1096 BTRFS_SETGET_STACK_FUNCS(stack_extent_refs
, struct btrfs_extent_item
,
1099 /* struct btrfs_node */
1100 BTRFS_SETGET_FUNCS(key_blockptr
, struct btrfs_key_ptr
, blockptr
, 64);
1101 BTRFS_SETGET_FUNCS(key_generation
, struct btrfs_key_ptr
, generation
, 64);
1103 static inline u64
btrfs_node_blockptr(struct extent_buffer
*eb
, int nr
)
1106 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1107 sizeof(struct btrfs_key_ptr
) * nr
;
1108 return btrfs_key_blockptr(eb
, (struct btrfs_key_ptr
*)ptr
);
1111 static inline void btrfs_set_node_blockptr(struct extent_buffer
*eb
,
1115 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1116 sizeof(struct btrfs_key_ptr
) * nr
;
1117 btrfs_set_key_blockptr(eb
, (struct btrfs_key_ptr
*)ptr
, val
);
1120 static inline u64
btrfs_node_ptr_generation(struct extent_buffer
*eb
, int nr
)
1123 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1124 sizeof(struct btrfs_key_ptr
) * nr
;
1125 return btrfs_key_generation(eb
, (struct btrfs_key_ptr
*)ptr
);
1128 static inline void btrfs_set_node_ptr_generation(struct extent_buffer
*eb
,
1132 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1133 sizeof(struct btrfs_key_ptr
) * nr
;
1134 btrfs_set_key_generation(eb
, (struct btrfs_key_ptr
*)ptr
, val
);
1137 static inline unsigned long btrfs_node_key_ptr_offset(int nr
)
1139 return offsetof(struct btrfs_node
, ptrs
) +
1140 sizeof(struct btrfs_key_ptr
) * nr
;
1143 void btrfs_node_key(struct extent_buffer
*eb
,
1144 struct btrfs_disk_key
*disk_key
, int nr
);
1146 static inline void btrfs_set_node_key(struct extent_buffer
*eb
,
1147 struct btrfs_disk_key
*disk_key
, int nr
)
1150 ptr
= btrfs_node_key_ptr_offset(nr
);
1151 write_eb_member(eb
, (struct btrfs_key_ptr
*)ptr
,
1152 struct btrfs_key_ptr
, key
, disk_key
);
1155 /* struct btrfs_item */
1156 BTRFS_SETGET_FUNCS(item_offset
, struct btrfs_item
, offset
, 32);
1157 BTRFS_SETGET_FUNCS(item_size
, struct btrfs_item
, size
, 32);
1159 static inline unsigned long btrfs_item_nr_offset(int nr
)
1161 return offsetof(struct btrfs_leaf
, items
) +
1162 sizeof(struct btrfs_item
) * nr
;
1165 static inline struct btrfs_item
*btrfs_item_nr(struct extent_buffer
*eb
,
1168 return (struct btrfs_item
*)btrfs_item_nr_offset(nr
);
1171 static inline u32
btrfs_item_end(struct extent_buffer
*eb
,
1172 struct btrfs_item
*item
)
1174 return btrfs_item_offset(eb
, item
) + btrfs_item_size(eb
, item
);
1177 static inline u32
btrfs_item_end_nr(struct extent_buffer
*eb
, int nr
)
1179 return btrfs_item_end(eb
, btrfs_item_nr(eb
, nr
));
1182 static inline u32
btrfs_item_offset_nr(struct extent_buffer
*eb
, int nr
)
1184 return btrfs_item_offset(eb
, btrfs_item_nr(eb
, nr
));
1187 static inline u32
btrfs_item_size_nr(struct extent_buffer
*eb
, int nr
)
1189 return btrfs_item_size(eb
, btrfs_item_nr(eb
, nr
));
1192 static inline void btrfs_item_key(struct extent_buffer
*eb
,
1193 struct btrfs_disk_key
*disk_key
, int nr
)
1195 struct btrfs_item
*item
= btrfs_item_nr(eb
, nr
);
1196 read_eb_member(eb
, item
, struct btrfs_item
, key
, disk_key
);
1199 static inline void btrfs_set_item_key(struct extent_buffer
*eb
,
1200 struct btrfs_disk_key
*disk_key
, int nr
)
1202 struct btrfs_item
*item
= btrfs_item_nr(eb
, nr
);
1203 write_eb_member(eb
, item
, struct btrfs_item
, key
, disk_key
);
1206 BTRFS_SETGET_FUNCS(dir_log_end
, struct btrfs_dir_log_item
, end
, 64);
1208 /* struct btrfs_dir_item */
1209 BTRFS_SETGET_FUNCS(dir_data_len
, struct btrfs_dir_item
, data_len
, 16);
1210 BTRFS_SETGET_FUNCS(dir_type
, struct btrfs_dir_item
, type
, 8);
1211 BTRFS_SETGET_FUNCS(dir_name_len
, struct btrfs_dir_item
, name_len
, 16);
1212 BTRFS_SETGET_FUNCS(dir_transid
, struct btrfs_dir_item
, transid
, 64);
1214 static inline void btrfs_dir_item_key(struct extent_buffer
*eb
,
1215 struct btrfs_dir_item
*item
,
1216 struct btrfs_disk_key
*key
)
1218 read_eb_member(eb
, item
, struct btrfs_dir_item
, location
, key
);
1221 static inline void btrfs_set_dir_item_key(struct extent_buffer
*eb
,
1222 struct btrfs_dir_item
*item
,
1223 struct btrfs_disk_key
*key
)
1225 write_eb_member(eb
, item
, struct btrfs_dir_item
, location
, key
);
1228 /* struct btrfs_disk_key */
1229 BTRFS_SETGET_STACK_FUNCS(disk_key_objectid
, struct btrfs_disk_key
,
1231 BTRFS_SETGET_STACK_FUNCS(disk_key_offset
, struct btrfs_disk_key
, offset
, 64);
1232 BTRFS_SETGET_STACK_FUNCS(disk_key_type
, struct btrfs_disk_key
, type
, 8);
1234 static inline void btrfs_disk_key_to_cpu(struct btrfs_key
*cpu
,
1235 struct btrfs_disk_key
*disk
)
1237 cpu
->offset
= le64_to_cpu(disk
->offset
);
1238 cpu
->type
= disk
->type
;
1239 cpu
->objectid
= le64_to_cpu(disk
->objectid
);
1242 static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key
*disk
,
1243 struct btrfs_key
*cpu
)
1245 disk
->offset
= cpu_to_le64(cpu
->offset
);
1246 disk
->type
= cpu
->type
;
1247 disk
->objectid
= cpu_to_le64(cpu
->objectid
);
1250 static inline void btrfs_node_key_to_cpu(struct extent_buffer
*eb
,
1251 struct btrfs_key
*key
, int nr
)
1253 struct btrfs_disk_key disk_key
;
1254 btrfs_node_key(eb
, &disk_key
, nr
);
1255 btrfs_disk_key_to_cpu(key
, &disk_key
);
1258 static inline void btrfs_item_key_to_cpu(struct extent_buffer
*eb
,
1259 struct btrfs_key
*key
, int nr
)
1261 struct btrfs_disk_key disk_key
;
1262 btrfs_item_key(eb
, &disk_key
, nr
);
1263 btrfs_disk_key_to_cpu(key
, &disk_key
);
1266 static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer
*eb
,
1267 struct btrfs_dir_item
*item
,
1268 struct btrfs_key
*key
)
1270 struct btrfs_disk_key disk_key
;
1271 btrfs_dir_item_key(eb
, item
, &disk_key
);
1272 btrfs_disk_key_to_cpu(key
, &disk_key
);
1276 static inline u8
btrfs_key_type(struct btrfs_key
*key
)
1281 static inline void btrfs_set_key_type(struct btrfs_key
*key
, u8 val
)
1286 /* struct btrfs_header */
1287 BTRFS_SETGET_HEADER_FUNCS(header_bytenr
, struct btrfs_header
, bytenr
, 64);
1288 BTRFS_SETGET_HEADER_FUNCS(header_generation
, struct btrfs_header
,
1290 BTRFS_SETGET_HEADER_FUNCS(header_owner
, struct btrfs_header
, owner
, 64);
1291 BTRFS_SETGET_HEADER_FUNCS(header_nritems
, struct btrfs_header
, nritems
, 32);
1292 BTRFS_SETGET_HEADER_FUNCS(header_flags
, struct btrfs_header
, flags
, 64);
1293 BTRFS_SETGET_HEADER_FUNCS(header_level
, struct btrfs_header
, level
, 8);
1295 static inline int btrfs_header_flag(struct extent_buffer
*eb
, u64 flag
)
1297 return (btrfs_header_flags(eb
) & flag
) == flag
;
1300 static inline int btrfs_set_header_flag(struct extent_buffer
*eb
, u64 flag
)
1302 u64 flags
= btrfs_header_flags(eb
);
1303 btrfs_set_header_flags(eb
, flags
| flag
);
1304 return (flags
& flag
) == flag
;
1307 static inline int btrfs_clear_header_flag(struct extent_buffer
*eb
, u64 flag
)
1309 u64 flags
= btrfs_header_flags(eb
);
1310 btrfs_set_header_flags(eb
, flags
& ~flag
);
1311 return (flags
& flag
) == flag
;
1314 static inline u8
*btrfs_header_fsid(struct extent_buffer
*eb
)
1316 unsigned long ptr
= offsetof(struct btrfs_header
, fsid
);
1320 static inline u8
*btrfs_header_chunk_tree_uuid(struct extent_buffer
*eb
)
1322 unsigned long ptr
= offsetof(struct btrfs_header
, chunk_tree_uuid
);
1326 static inline u8
*btrfs_super_fsid(struct extent_buffer
*eb
)
1328 unsigned long ptr
= offsetof(struct btrfs_super_block
, fsid
);
1332 static inline u8
*btrfs_header_csum(struct extent_buffer
*eb
)
1334 unsigned long ptr
= offsetof(struct btrfs_header
, csum
);
1338 static inline struct btrfs_node
*btrfs_buffer_node(struct extent_buffer
*eb
)
1343 static inline struct btrfs_leaf
*btrfs_buffer_leaf(struct extent_buffer
*eb
)
1348 static inline struct btrfs_header
*btrfs_buffer_header(struct extent_buffer
*eb
)
1353 static inline int btrfs_is_leaf(struct extent_buffer
*eb
)
1355 return (btrfs_header_level(eb
) == 0);
1358 /* struct btrfs_root_item */
1359 BTRFS_SETGET_FUNCS(disk_root_refs
, struct btrfs_root_item
, refs
, 32);
1360 BTRFS_SETGET_FUNCS(disk_root_bytenr
, struct btrfs_root_item
, bytenr
, 64);
1361 BTRFS_SETGET_FUNCS(disk_root_level
, struct btrfs_root_item
, level
, 8);
1363 BTRFS_SETGET_STACK_FUNCS(root_bytenr
, struct btrfs_root_item
, bytenr
, 64);
1364 BTRFS_SETGET_STACK_FUNCS(root_level
, struct btrfs_root_item
, level
, 8);
1365 BTRFS_SETGET_STACK_FUNCS(root_dirid
, struct btrfs_root_item
, root_dirid
, 64);
1366 BTRFS_SETGET_STACK_FUNCS(root_refs
, struct btrfs_root_item
, refs
, 32);
1367 BTRFS_SETGET_STACK_FUNCS(root_flags
, struct btrfs_root_item
, flags
, 32);
1368 BTRFS_SETGET_STACK_FUNCS(root_used
, struct btrfs_root_item
, bytes_used
, 64);
1369 BTRFS_SETGET_STACK_FUNCS(root_limit
, struct btrfs_root_item
, byte_limit
, 64);
1371 /* struct btrfs_super_block */
1372 BTRFS_SETGET_STACK_FUNCS(super_bytenr
, struct btrfs_super_block
, bytenr
, 64);
1373 BTRFS_SETGET_STACK_FUNCS(super_flags
, struct btrfs_super_block
, flags
, 64);
1374 BTRFS_SETGET_STACK_FUNCS(super_generation
, struct btrfs_super_block
,
1376 BTRFS_SETGET_STACK_FUNCS(super_root
, struct btrfs_super_block
, root
, 64);
1377 BTRFS_SETGET_STACK_FUNCS(super_sys_array_size
,
1378 struct btrfs_super_block
, sys_chunk_array_size
, 32);
1379 BTRFS_SETGET_STACK_FUNCS(super_root_level
, struct btrfs_super_block
,
1381 BTRFS_SETGET_STACK_FUNCS(super_chunk_root
, struct btrfs_super_block
,
1383 BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level
, struct btrfs_super_block
,
1384 chunk_root_level
, 8);
1385 BTRFS_SETGET_STACK_FUNCS(super_log_root
, struct btrfs_super_block
,
1387 BTRFS_SETGET_STACK_FUNCS(super_log_root_level
, struct btrfs_super_block
,
1389 BTRFS_SETGET_STACK_FUNCS(super_total_bytes
, struct btrfs_super_block
,
1391 BTRFS_SETGET_STACK_FUNCS(super_bytes_used
, struct btrfs_super_block
,
1393 BTRFS_SETGET_STACK_FUNCS(super_sectorsize
, struct btrfs_super_block
,
1395 BTRFS_SETGET_STACK_FUNCS(super_nodesize
, struct btrfs_super_block
,
1397 BTRFS_SETGET_STACK_FUNCS(super_leafsize
, struct btrfs_super_block
,
1399 BTRFS_SETGET_STACK_FUNCS(super_stripesize
, struct btrfs_super_block
,
1401 BTRFS_SETGET_STACK_FUNCS(super_root_dir
, struct btrfs_super_block
,
1402 root_dir_objectid
, 64);
1403 BTRFS_SETGET_STACK_FUNCS(super_num_devices
, struct btrfs_super_block
,
1406 static inline unsigned long btrfs_leaf_data(struct extent_buffer
*l
)
1408 return offsetof(struct btrfs_leaf
, items
);
1411 /* struct btrfs_file_extent_item */
1412 BTRFS_SETGET_FUNCS(file_extent_type
, struct btrfs_file_extent_item
, type
, 8);
1414 static inline unsigned long btrfs_file_extent_inline_start(struct
1415 btrfs_file_extent_item
*e
)
1417 unsigned long offset
= (unsigned long)e
;
1418 offset
+= offsetof(struct btrfs_file_extent_item
, disk_bytenr
);
1422 static inline u32
btrfs_file_extent_calc_inline_size(u32 datasize
)
1424 return offsetof(struct btrfs_file_extent_item
, disk_bytenr
) + datasize
;
1427 static inline u32
btrfs_file_extent_inline_len(struct extent_buffer
*eb
,
1428 struct btrfs_item
*e
)
1430 unsigned long offset
;
1431 offset
= offsetof(struct btrfs_file_extent_item
, disk_bytenr
);
1432 return btrfs_item_size(eb
, e
) - offset
;
1435 BTRFS_SETGET_FUNCS(file_extent_disk_bytenr
, struct btrfs_file_extent_item
,
1437 BTRFS_SETGET_FUNCS(file_extent_generation
, struct btrfs_file_extent_item
,
1439 BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes
, struct btrfs_file_extent_item
,
1440 disk_num_bytes
, 64);
1441 BTRFS_SETGET_FUNCS(file_extent_offset
, struct btrfs_file_extent_item
,
1443 BTRFS_SETGET_FUNCS(file_extent_num_bytes
, struct btrfs_file_extent_item
,
1446 static inline struct btrfs_root
*btrfs_sb(struct super_block
*sb
)
1448 return sb
->s_fs_info
;
1451 static inline int btrfs_set_root_name(struct btrfs_root
*root
,
1452 const char *name
, int len
)
1454 /* if we already have a name just free it */
1458 root
->name
= kmalloc(len
+1, GFP_KERNEL
);
1462 memcpy(root
->name
, name
, len
);
1463 root
->name
[len
] ='\0';
1468 static inline u32
btrfs_level_size(struct btrfs_root
*root
, int level
) {
1470 return root
->leafsize
;
1471 return root
->nodesize
;
1474 /* helper function to cast into the data area of the leaf. */
1475 #define btrfs_item_ptr(leaf, slot, type) \
1476 ((type *)(btrfs_leaf_data(leaf) + \
1477 btrfs_item_offset_nr(leaf, slot)))
1479 #define btrfs_item_ptr_offset(leaf, slot) \
1480 ((unsigned long)(btrfs_leaf_data(leaf) + \
1481 btrfs_item_offset_nr(leaf, slot)))
1483 static inline struct dentry
*fdentry(struct file
*file
)
1485 return file
->f_path
.dentry
;
1489 int btrfs_lookup_extent(struct btrfs_root
*root
, u64 start
, u64 len
);
1490 int btrfs_lookup_extent_ref(struct btrfs_trans_handle
*trans
,
1491 struct btrfs_root
*root
, u64 bytenr
,
1492 u64 num_bytes
, u32
*refs
);
1493 int btrfs_update_pinned_extents(struct btrfs_root
*root
,
1494 u64 bytenr
, u64 num
, int pin
);
1495 int btrfs_drop_leaf_ref(struct btrfs_trans_handle
*trans
,
1496 struct btrfs_root
*root
, struct extent_buffer
*leaf
);
1497 int btrfs_cross_ref_exists(struct btrfs_trans_handle
*trans
,
1498 struct btrfs_root
*root
,
1499 struct btrfs_key
*key
, u64 bytenr
);
1500 int btrfs_extent_post_op(struct btrfs_trans_handle
*trans
,
1501 struct btrfs_root
*root
);
1502 int btrfs_copy_pinned(struct btrfs_root
*root
, struct extent_io_tree
*copy
);
1503 struct btrfs_block_group_cache
*btrfs_lookup_block_group(struct
1504 btrfs_fs_info
*info
,
1506 struct btrfs_block_group_cache
*btrfs_find_block_group(struct btrfs_root
*root
,
1507 struct btrfs_block_group_cache
1508 *hint
, u64 search_start
,
1509 int data
, int owner
);
1510 struct extent_buffer
*btrfs_alloc_free_block(struct btrfs_trans_handle
*trans
,
1511 struct btrfs_root
*root
,
1512 u32 blocksize
, u64 parent
,
1518 struct extent_buffer
*btrfs_init_new_buffer(struct btrfs_trans_handle
*trans
,
1519 struct btrfs_root
*root
,
1520 u64 bytenr
, u32 blocksize
);
1521 int btrfs_alloc_extent(struct btrfs_trans_handle
*trans
,
1522 struct btrfs_root
*root
,
1523 u64 num_bytes
, u64 parent
, u64 min_bytes
,
1524 u64 root_objectid
, u64 ref_generation
,
1525 u64 owner
, u64 empty_size
, u64 hint_byte
,
1526 u64 search_end
, struct btrfs_key
*ins
, u64 data
);
1527 int btrfs_alloc_reserved_extent(struct btrfs_trans_handle
*trans
,
1528 struct btrfs_root
*root
, u64 parent
,
1529 u64 root_objectid
, u64 ref_generation
,
1530 u64 owner
, struct btrfs_key
*ins
);
1531 int btrfs_alloc_logged_extent(struct btrfs_trans_handle
*trans
,
1532 struct btrfs_root
*root
, u64 parent
,
1533 u64 root_objectid
, u64 ref_generation
,
1534 u64 owner
, struct btrfs_key
*ins
);
1535 int btrfs_reserve_extent(struct btrfs_trans_handle
*trans
,
1536 struct btrfs_root
*root
,
1537 u64 num_bytes
, u64 min_alloc_size
,
1538 u64 empty_size
, u64 hint_byte
,
1539 u64 search_end
, struct btrfs_key
*ins
,
1541 int btrfs_inc_ref(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1542 struct extent_buffer
*orig_buf
, struct extent_buffer
*buf
,
1544 int btrfs_cache_ref(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1545 struct extent_buffer
*buf
, u32 nr_extents
);
1546 int btrfs_update_ref(struct btrfs_trans_handle
*trans
,
1547 struct btrfs_root
*root
, struct extent_buffer
*orig_buf
,
1548 struct extent_buffer
*buf
, int start_slot
, int nr
);
1549 int btrfs_free_extent(struct btrfs_trans_handle
*trans
,
1550 struct btrfs_root
*root
,
1551 u64 bytenr
, u64 num_bytes
, u64 parent
,
1552 u64 root_objectid
, u64 ref_generation
,
1553 u64 owner_objectid
, int pin
);
1554 int btrfs_free_reserved_extent(struct btrfs_root
*root
, u64 start
, u64 len
);
1555 int btrfs_finish_extent_commit(struct btrfs_trans_handle
*trans
,
1556 struct btrfs_root
*root
,
1557 struct extent_io_tree
*unpin
);
1558 int btrfs_inc_extent_ref(struct btrfs_trans_handle
*trans
,
1559 struct btrfs_root
*root
,
1560 u64 bytenr
, u64 num_bytes
, u64 parent
,
1561 u64 root_objectid
, u64 ref_generation
,
1562 u64 owner_objectid
);
1563 int btrfs_update_extent_ref(struct btrfs_trans_handle
*trans
,
1564 struct btrfs_root
*root
, u64 bytenr
,
1565 u64 orig_parent
, u64 parent
,
1566 u64 root_objectid
, u64 ref_generation
,
1567 u64 owner_objectid
);
1568 int btrfs_write_dirty_block_groups(struct btrfs_trans_handle
*trans
,
1569 struct btrfs_root
*root
);
1570 int btrfs_free_block_groups(struct btrfs_fs_info
*info
);
1571 int btrfs_read_block_groups(struct btrfs_root
*root
);
1572 int btrfs_make_block_group(struct btrfs_trans_handle
*trans
,
1573 struct btrfs_root
*root
, u64 bytes_used
,
1574 u64 type
, u64 chunk_objectid
, u64 chunk_offset
,
1576 int btrfs_remove_block_group(struct btrfs_trans_handle
*trans
,
1577 struct btrfs_root
*root
, u64 group_start
);
1578 int btrfs_relocate_block_group(struct btrfs_root
*root
, u64 group_start
);
1579 int btrfs_free_reloc_root(struct btrfs_root
*root
);
1580 int btrfs_drop_dead_reloc_roots(struct btrfs_root
*root
);
1581 int btrfs_add_reloc_mapping(struct btrfs_root
*root
, u64 orig_bytenr
,
1582 u64 num_bytes
, u64 new_bytenr
);
1583 int btrfs_get_reloc_mapping(struct btrfs_root
*root
, u64 orig_bytenr
,
1584 u64 num_bytes
, u64
*new_bytenr
);
1585 void btrfs_free_reloc_mappings(struct btrfs_root
*root
);
1586 int btrfs_reloc_tree_cache_ref(struct btrfs_trans_handle
*trans
,
1587 struct btrfs_root
*root
,
1588 struct extent_buffer
*buf
, u64 orig_start
);
1589 int btrfs_add_dead_reloc_root(struct btrfs_root
*root
);
1590 int btrfs_cleanup_reloc_trees(struct btrfs_root
*root
);
1592 int btrfs_previous_item(struct btrfs_root
*root
,
1593 struct btrfs_path
*path
, u64 min_objectid
,
1595 int btrfs_merge_path(struct btrfs_trans_handle
*trans
,
1596 struct btrfs_root
*root
,
1597 struct btrfs_key
*node_keys
,
1598 u64
*nodes
, int lowest_level
);
1599 int btrfs_set_item_key_safe(struct btrfs_trans_handle
*trans
,
1600 struct btrfs_root
*root
, struct btrfs_path
*path
,
1601 struct btrfs_key
*new_key
);
1602 struct extent_buffer
*btrfs_root_node(struct btrfs_root
*root
);
1603 struct extent_buffer
*btrfs_lock_root_node(struct btrfs_root
*root
);
1604 int btrfs_find_next_key(struct btrfs_root
*root
, struct btrfs_path
*path
,
1605 struct btrfs_key
*key
, int lowest_level
,
1606 int cache_only
, u64 min_trans
);
1607 int btrfs_search_forward(struct btrfs_root
*root
, struct btrfs_key
*min_key
,
1608 struct btrfs_key
*max_key
,
1609 struct btrfs_path
*path
, int cache_only
,
1611 int btrfs_cow_block(struct btrfs_trans_handle
*trans
,
1612 struct btrfs_root
*root
, struct extent_buffer
*buf
,
1613 struct extent_buffer
*parent
, int parent_slot
,
1614 struct extent_buffer
**cow_ret
, u64 prealloc_dest
);
1615 int btrfs_copy_root(struct btrfs_trans_handle
*trans
,
1616 struct btrfs_root
*root
,
1617 struct extent_buffer
*buf
,
1618 struct extent_buffer
**cow_ret
, u64 new_root_objectid
);
1619 int btrfs_extend_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
1620 *root
, struct btrfs_path
*path
, u32 data_size
);
1621 int btrfs_truncate_item(struct btrfs_trans_handle
*trans
,
1622 struct btrfs_root
*root
,
1623 struct btrfs_path
*path
,
1624 u32 new_size
, int from_end
);
1625 int btrfs_search_slot(struct btrfs_trans_handle
*trans
, struct btrfs_root
1626 *root
, struct btrfs_key
*key
, struct btrfs_path
*p
, int
1628 int btrfs_realloc_node(struct btrfs_trans_handle
*trans
,
1629 struct btrfs_root
*root
, struct extent_buffer
*parent
,
1630 int start_slot
, int cache_only
, u64
*last_ret
,
1631 struct btrfs_key
*progress
);
1632 void btrfs_release_path(struct btrfs_root
*root
, struct btrfs_path
*p
);
1633 struct btrfs_path
*btrfs_alloc_path(void);
1634 void btrfs_free_path(struct btrfs_path
*p
);
1635 void btrfs_init_path(struct btrfs_path
*p
);
1636 int btrfs_del_items(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1637 struct btrfs_path
*path
, int slot
, int nr
);
1638 int btrfs_del_leaf(struct btrfs_trans_handle
*trans
,
1639 struct btrfs_root
*root
,
1640 struct btrfs_path
*path
, u64 bytenr
);
1641 static inline int btrfs_del_item(struct btrfs_trans_handle
*trans
,
1642 struct btrfs_root
*root
,
1643 struct btrfs_path
*path
)
1645 return btrfs_del_items(trans
, root
, path
, path
->slots
[0], 1);
1648 int btrfs_insert_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
1649 *root
, struct btrfs_key
*key
, void *data
, u32 data_size
);
1650 int btrfs_insert_empty_items(struct btrfs_trans_handle
*trans
,
1651 struct btrfs_root
*root
,
1652 struct btrfs_path
*path
,
1653 struct btrfs_key
*cpu_key
, u32
*data_size
, int nr
);
1655 static inline int btrfs_insert_empty_item(struct btrfs_trans_handle
*trans
,
1656 struct btrfs_root
*root
,
1657 struct btrfs_path
*path
,
1658 struct btrfs_key
*key
,
1661 return btrfs_insert_empty_items(trans
, root
, path
, key
, &data_size
, 1);
1664 int btrfs_next_leaf(struct btrfs_root
*root
, struct btrfs_path
*path
);
1665 int btrfs_prev_leaf(struct btrfs_root
*root
, struct btrfs_path
*path
);
1666 int btrfs_leaf_free_space(struct btrfs_root
*root
, struct extent_buffer
*leaf
);
1667 int btrfs_drop_snapshot(struct btrfs_trans_handle
*trans
, struct btrfs_root
1670 int btrfs_del_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1671 struct btrfs_key
*key
);
1672 int btrfs_insert_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
1673 *root
, struct btrfs_key
*key
, struct btrfs_root_item
1675 int btrfs_update_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
1676 *root
, struct btrfs_key
*key
, struct btrfs_root_item
1678 int btrfs_find_last_root(struct btrfs_root
*root
, u64 objectid
, struct
1679 btrfs_root_item
*item
, struct btrfs_key
*key
);
1680 int btrfs_search_root(struct btrfs_root
*root
, u64 search_start
,
1681 u64
*found_objectid
);
1682 int btrfs_find_dead_roots(struct btrfs_root
*root
, u64 objectid
,
1683 struct btrfs_root
*latest_root
);
1685 int btrfs_insert_dir_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
1686 *root
, const char *name
, int name_len
, u64 dir
,
1687 struct btrfs_key
*location
, u8 type
, u64 index
);
1688 struct btrfs_dir_item
*btrfs_lookup_dir_item(struct btrfs_trans_handle
*trans
,
1689 struct btrfs_root
*root
,
1690 struct btrfs_path
*path
, u64 dir
,
1691 const char *name
, int name_len
,
1693 struct btrfs_dir_item
*
1694 btrfs_lookup_dir_index_item(struct btrfs_trans_handle
*trans
,
1695 struct btrfs_root
*root
,
1696 struct btrfs_path
*path
, u64 dir
,
1697 u64 objectid
, const char *name
, int name_len
,
1699 struct btrfs_dir_item
*btrfs_match_dir_item_name(struct btrfs_root
*root
,
1700 struct btrfs_path
*path
,
1701 const char *name
, int name_len
);
1702 int btrfs_delete_one_dir_name(struct btrfs_trans_handle
*trans
,
1703 struct btrfs_root
*root
,
1704 struct btrfs_path
*path
,
1705 struct btrfs_dir_item
*di
);
1706 int btrfs_insert_xattr_item(struct btrfs_trans_handle
*trans
,
1707 struct btrfs_root
*root
, const char *name
,
1708 u16 name_len
, const void *data
, u16 data_len
,
1710 struct btrfs_dir_item
*btrfs_lookup_xattr(struct btrfs_trans_handle
*trans
,
1711 struct btrfs_root
*root
,
1712 struct btrfs_path
*path
, u64 dir
,
1713 const char *name
, u16 name_len
,
1717 int btrfs_insert_orphan_item(struct btrfs_trans_handle
*trans
,
1718 struct btrfs_root
*root
, u64 offset
);
1719 int btrfs_del_orphan_item(struct btrfs_trans_handle
*trans
,
1720 struct btrfs_root
*root
, u64 offset
);
1723 int btrfs_find_free_objectid(struct btrfs_trans_handle
*trans
,
1724 struct btrfs_root
*fs_root
,
1725 u64 dirid
, u64
*objectid
);
1726 int btrfs_find_highest_inode(struct btrfs_root
*fs_root
, u64
*objectid
);
1729 int btrfs_insert_inode_ref(struct btrfs_trans_handle
*trans
,
1730 struct btrfs_root
*root
,
1731 const char *name
, int name_len
,
1732 u64 inode_objectid
, u64 ref_objectid
, u64 index
);
1733 int btrfs_del_inode_ref(struct btrfs_trans_handle
*trans
,
1734 struct btrfs_root
*root
,
1735 const char *name
, int name_len
,
1736 u64 inode_objectid
, u64 ref_objectid
, u64
*index
);
1737 int btrfs_insert_empty_inode(struct btrfs_trans_handle
*trans
,
1738 struct btrfs_root
*root
,
1739 struct btrfs_path
*path
, u64 objectid
);
1740 int btrfs_lookup_inode(struct btrfs_trans_handle
*trans
, struct btrfs_root
1741 *root
, struct btrfs_path
*path
,
1742 struct btrfs_key
*location
, int mod
);
1745 int btrfs_lookup_bio_sums(struct btrfs_root
*root
, struct inode
*inode
,
1747 int btrfs_insert_file_extent(struct btrfs_trans_handle
*trans
,
1748 struct btrfs_root
*root
,
1749 u64 objectid
, u64 pos
, u64 disk_offset
,
1751 u64 num_bytes
, u64 offset
);
1752 int btrfs_lookup_file_extent(struct btrfs_trans_handle
*trans
,
1753 struct btrfs_root
*root
,
1754 struct btrfs_path
*path
, u64 objectid
,
1755 u64 bytenr
, int mod
);
1756 int btrfs_csum_file_blocks(struct btrfs_trans_handle
*trans
,
1757 struct btrfs_root
*root
, struct inode
*inode
,
1758 struct btrfs_ordered_sum
*sums
);
1759 int btrfs_csum_one_bio(struct btrfs_root
*root
, struct inode
*inode
,
1761 struct btrfs_csum_item
*btrfs_lookup_csum(struct btrfs_trans_handle
*trans
,
1762 struct btrfs_root
*root
,
1763 struct btrfs_path
*path
,
1764 u64 objectid
, u64 offset
,
1766 int btrfs_csum_truncate(struct btrfs_trans_handle
*trans
,
1767 struct btrfs_root
*root
, struct btrfs_path
*path
,
1771 /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */
1772 #if defined(ClearPageFsMisc) && !defined(ClearPageChecked)
1773 #define ClearPageChecked ClearPageFsMisc
1774 #define SetPageChecked SetPageFsMisc
1775 #define PageChecked PageFsMisc
1778 int btrfs_unlink_inode(struct btrfs_trans_handle
*trans
,
1779 struct btrfs_root
*root
,
1780 struct inode
*dir
, struct inode
*inode
,
1781 const char *name
, int name_len
);
1782 int btrfs_add_link(struct btrfs_trans_handle
*trans
,
1783 struct inode
*parent_inode
, struct inode
*inode
,
1784 const char *name
, int name_len
, int add_backref
, u64 index
);
1785 int btrfs_truncate_inode_items(struct btrfs_trans_handle
*trans
,
1786 struct btrfs_root
*root
,
1787 struct inode
*inode
, u64 new_size
,
1790 int btrfs_start_delalloc_inodes(struct btrfs_root
*root
);
1791 int btrfs_set_extent_delalloc(struct inode
*inode
, u64 start
, u64 end
);
1792 int btrfs_writepages(struct address_space
*mapping
,
1793 struct writeback_control
*wbc
);
1794 int btrfs_create_subvol_root(struct btrfs_root
*new_root
,
1795 struct btrfs_trans_handle
*trans
, u64 new_dirid
,
1796 struct btrfs_block_group_cache
*block_group
);
1798 void btrfs_invalidate_dcache_root(struct btrfs_root
*root
, char *name
,
1801 int btrfs_merge_bio_hook(struct page
*page
, unsigned long offset
,
1802 size_t size
, struct bio
*bio
);
1804 unsigned long btrfs_force_ra(struct address_space
*mapping
,
1805 struct file_ra_state
*ra
, struct file
*file
,
1806 pgoff_t offset
, pgoff_t last_index
);
1807 int btrfs_check_free_space(struct btrfs_root
*root
, u64 num_required
,
1809 int btrfs_page_mkwrite(struct vm_area_struct
*vma
, struct page
*page
);
1810 int btrfs_readpage(struct file
*file
, struct page
*page
);
1811 void btrfs_delete_inode(struct inode
*inode
);
1812 void btrfs_put_inode(struct inode
*inode
);
1813 void btrfs_read_locked_inode(struct inode
*inode
);
1814 int btrfs_write_inode(struct inode
*inode
, int wait
);
1815 void btrfs_dirty_inode(struct inode
*inode
);
1816 struct inode
*btrfs_alloc_inode(struct super_block
*sb
);
1817 void btrfs_destroy_inode(struct inode
*inode
);
1818 int btrfs_init_cachep(void);
1819 void btrfs_destroy_cachep(void);
1820 long btrfs_ioctl_trans_end(struct file
*file
);
1821 struct inode
*btrfs_ilookup(struct super_block
*s
, u64 objectid
,
1822 struct btrfs_root
*root
, int wait
);
1823 struct inode
*btrfs_iget_locked(struct super_block
*s
, u64 objectid
,
1824 struct btrfs_root
*root
);
1825 struct inode
*btrfs_iget(struct super_block
*s
, struct btrfs_key
*location
,
1826 struct btrfs_root
*root
, int *is_new
);
1827 int btrfs_commit_write(struct file
*file
, struct page
*page
,
1828 unsigned from
, unsigned to
);
1829 struct extent_map
*btrfs_get_extent(struct inode
*inode
, struct page
*page
,
1830 size_t page_offset
, u64 start
, u64 end
,
1832 int btrfs_update_inode(struct btrfs_trans_handle
*trans
,
1833 struct btrfs_root
*root
,
1834 struct inode
*inode
);
1835 int btrfs_orphan_add(struct btrfs_trans_handle
*trans
, struct inode
*inode
);
1836 int btrfs_orphan_del(struct btrfs_trans_handle
*trans
, struct inode
*inode
);
1837 void btrfs_orphan_cleanup(struct btrfs_root
*root
);
1840 long btrfs_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
);
1843 int btrfs_sync_file(struct file
*file
, struct dentry
*dentry
, int datasync
);
1844 int btrfs_drop_extent_cache(struct inode
*inode
, u64 start
, u64 end
,
1846 int btrfs_check_file(struct btrfs_root
*root
, struct inode
*inode
);
1847 extern struct file_operations btrfs_file_operations
;
1848 int btrfs_drop_extents(struct btrfs_trans_handle
*trans
,
1849 struct btrfs_root
*root
, struct inode
*inode
,
1850 u64 start
, u64 end
, u64 inline_limit
, u64
*hint_block
);
1851 int btrfs_release_file(struct inode
*inode
, struct file
*file
);
1854 int btrfs_defrag_leaves(struct btrfs_trans_handle
*trans
,
1855 struct btrfs_root
*root
, int cache_only
);
1858 int btrfs_init_sysfs(void);
1859 void btrfs_exit_sysfs(void);
1860 int btrfs_sysfs_add_super(struct btrfs_fs_info
*fs
);
1861 int btrfs_sysfs_add_root(struct btrfs_root
*root
);
1862 void btrfs_sysfs_del_root(struct btrfs_root
*root
);
1863 void btrfs_sysfs_del_super(struct btrfs_fs_info
*root
);
1866 ssize_t
btrfs_listxattr(struct dentry
*dentry
, char *buffer
, size_t size
);
1869 u64
btrfs_parse_size(char *str
);
1870 int btrfs_parse_options(struct btrfs_root
*root
, char *options
);
1871 int btrfs_sync_fs(struct super_block
*sb
, int wait
);
1874 int btrfs_check_acl(struct inode
*inode
, int mask
);
1875 int btrfs_init_acl(struct inode
*inode
, struct inode
*dir
);
1876 int btrfs_acl_chmod(struct inode
*inode
);
1878 /* free-space-cache.c */
1879 int btrfs_add_free_space(struct btrfs_block_group_cache
*block_group
,
1880 u64 bytenr
, u64 size
);
1881 int btrfs_remove_free_space(struct btrfs_block_group_cache
*block_group
,
1882 u64 bytenr
, u64 size
);
1883 void btrfs_remove_free_space_cache(struct btrfs_block_group_cache
1885 struct btrfs_free_space
*btrfs_find_free_space(struct btrfs_block_group_cache
1886 *block_group
, u64 offset
,
1888 void btrfs_dump_free_space(struct btrfs_block_group_cache
*block_group
,
1890 u64
btrfs_block_group_free_space(struct btrfs_block_group_cache
*block_group
);