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 "_B9RfS_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
84 /* for space balancing */
85 #define BTRFS_TREE_RELOC_OBJECTID -8ULL
86 #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL
88 /* dummy objectid represents multiple objectids */
89 #define BTRFS_MULTIPLE_OBJECTIDS -255ULL
92 * All files have objectids in this range.
94 #define BTRFS_FIRST_FREE_OBJECTID 256ULL
95 #define BTRFS_LAST_FREE_OBJECTID -256ULL
96 #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL
100 * the device items go into the chunk tree. The key is in the form
101 * [ 1 BTRFS_DEV_ITEM_KEY device_id ]
103 #define BTRFS_DEV_ITEMS_OBJECTID 1ULL
106 * we can actually store much bigger names, but lets not confuse the rest
109 #define BTRFS_NAME_LEN 255
111 /* 32 bytes in various csum fields */
112 #define BTRFS_CSUM_SIZE 32
113 /* four bytes for CRC32 */
114 #define BTRFS_CRC32_SIZE 4
115 #define BTRFS_EMPTY_DIR_SIZE 0
117 #define BTRFS_FT_UNKNOWN 0
118 #define BTRFS_FT_REG_FILE 1
119 #define BTRFS_FT_DIR 2
120 #define BTRFS_FT_CHRDEV 3
121 #define BTRFS_FT_BLKDEV 4
122 #define BTRFS_FT_FIFO 5
123 #define BTRFS_FT_SOCK 6
124 #define BTRFS_FT_SYMLINK 7
125 #define BTRFS_FT_XATTR 8
126 #define BTRFS_FT_MAX 9
129 * the key defines the order in the tree, and so it also defines (optimal)
130 * block layout. objectid corresonds to the inode number. The flags
131 * tells us things about the object, and is a kind of stream selector.
132 * so for a given inode, keys with flags of 1 might refer to the inode
133 * data, flags of 2 may point to file data in the btree and flags == 3
134 * may point to extents.
136 * offset is the starting byte offset for this key in the stream.
138 * btrfs_disk_key is in disk byte order. struct btrfs_key is always
139 * in cpu native order. Otherwise they are identical and their sizes
140 * should be the same (ie both packed)
142 struct btrfs_disk_key
{
146 } __attribute__ ((__packed__
));
152 } __attribute__ ((__packed__
));
154 struct btrfs_mapping_tree
{
155 struct extent_map_tree map_tree
;
158 #define BTRFS_UUID_SIZE 16
159 struct btrfs_dev_item
{
160 /* the internal btrfs device id */
163 /* size of the device */
169 /* optimal io alignment for this device */
172 /* optimal io width for this device */
175 /* minimal io size for this device */
178 /* type and info about this device */
181 /* grouping information for allocation decisions */
184 /* seek speed 0-100 where 100 is fastest */
187 /* bandwidth 0-100 where 100 is fastest */
190 /* btrfs generated uuid for this device */
191 u8 uuid
[BTRFS_UUID_SIZE
];
192 } __attribute__ ((__packed__
));
194 struct btrfs_stripe
{
197 u8 dev_uuid
[BTRFS_UUID_SIZE
];
198 } __attribute__ ((__packed__
));
201 /* size of this chunk in bytes */
204 /* objectid of the root referencing this chunk */
210 /* optimal io alignment for this chunk */
213 /* optimal io width for this chunk */
216 /* minimal io size for this chunk */
219 /* 2^16 stripes is quite a lot, a second limit is the size of a single
224 /* sub stripes only matter for raid10 */
226 struct btrfs_stripe stripe
;
227 /* additional stripes go here */
228 } __attribute__ ((__packed__
));
230 static inline unsigned long btrfs_chunk_item_size(int num_stripes
)
232 BUG_ON(num_stripes
== 0);
233 return sizeof(struct btrfs_chunk
) +
234 sizeof(struct btrfs_stripe
) * (num_stripes
- 1);
237 #define BTRFS_FSID_SIZE 16
238 #define BTRFS_HEADER_FLAG_WRITTEN (1 << 0)
241 * every tree block (leaf or node) starts with this header.
243 struct btrfs_header
{
244 /* these first four must match the super block */
245 u8 csum
[BTRFS_CSUM_SIZE
];
246 u8 fsid
[BTRFS_FSID_SIZE
]; /* FS specific uuid */
247 __le64 bytenr
; /* which block this node is supposed to live in */
250 /* allowed to be different from the super from here on down */
251 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
256 } __attribute__ ((__packed__
));
258 #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \
259 sizeof(struct btrfs_header)) / \
260 sizeof(struct btrfs_key_ptr))
261 #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header))
262 #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize))
263 #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \
264 sizeof(struct btrfs_item) - \
265 sizeof(struct btrfs_file_extent_item))
269 * this is a very generous portion of the super block, giving us
270 * room to translate 14 chunks with 3 stripes each.
272 #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048
273 #define BTRFS_LABEL_SIZE 256
276 * the super block basically lists the main trees of the FS
277 * it currently lacks any block count etc etc
279 struct btrfs_super_block
{
280 u8 csum
[BTRFS_CSUM_SIZE
];
281 /* the first 4 fields must match struct btrfs_header */
282 u8 fsid
[16]; /* FS specific uuid */
283 __le64 bytenr
; /* this block number */
286 /* allowed to be different from the btrfs_header from here own down */
294 __le64 root_dir_objectid
;
300 __le32 sys_chunk_array_size
;
304 struct btrfs_dev_item dev_item
;
305 char label
[BTRFS_LABEL_SIZE
];
306 u8 sys_chunk_array
[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE
];
307 } __attribute__ ((__packed__
));
310 * A leaf is full of items. offset and size tell us where to find
311 * the item in the leaf (relative to the start of the data area)
314 struct btrfs_disk_key key
;
317 } __attribute__ ((__packed__
));
320 * leaves have an item area and a data area:
321 * [item0, item1....itemN] [free space] [dataN...data1, data0]
323 * The data is separate from the items to get the keys closer together
327 struct btrfs_header header
;
328 struct btrfs_item items
[];
329 } __attribute__ ((__packed__
));
332 * all non-leaf blocks are nodes, they hold only keys and pointers to
335 struct btrfs_key_ptr
{
336 struct btrfs_disk_key key
;
339 } __attribute__ ((__packed__
));
342 struct btrfs_header header
;
343 struct btrfs_key_ptr ptrs
[];
344 } __attribute__ ((__packed__
));
347 * btrfs_paths remember the path taken from the root down to the leaf.
348 * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point
349 * to any other levels that are present.
351 * The slots array records the index of the item or block pointer
352 * used while walking the tree.
355 struct extent_buffer
*nodes
[BTRFS_MAX_LEVEL
];
356 int slots
[BTRFS_MAX_LEVEL
];
357 /* if there is real range locking, this locks field will change */
358 int locks
[BTRFS_MAX_LEVEL
];
360 /* keep some upper locks as we walk down */
367 * items in the extent btree are used to record the objectid of the
368 * owner of the block and the number of references
370 struct btrfs_extent_item
{
372 } __attribute__ ((__packed__
));
374 struct btrfs_extent_ref
{
380 } __attribute__ ((__packed__
));
382 /* dev extents record free space on individual devices. The owner
383 * field points back to the chunk allocation mapping tree that allocated
384 * the extent. The chunk tree uuid field is a way to double check the owner
386 struct btrfs_dev_extent
{
388 __le64 chunk_objectid
;
391 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
392 } __attribute__ ((__packed__
));
394 struct btrfs_inode_ref
{
398 } __attribute__ ((__packed__
));
400 struct btrfs_timespec
{
403 } __attribute__ ((__packed__
));
406 * there is no padding here on purpose. If you want to extent the inode,
407 * make a new item type
409 struct btrfs_inode_item
{
410 /* nfs style generation number */
412 /* transid that last touched this inode */
424 struct btrfs_timespec atime
;
425 struct btrfs_timespec ctime
;
426 struct btrfs_timespec mtime
;
427 struct btrfs_timespec otime
;
428 } __attribute__ ((__packed__
));
430 struct btrfs_dir_log_item
{
432 } __attribute__ ((__packed__
));
434 struct btrfs_dir_item
{
435 struct btrfs_disk_key location
;
440 } __attribute__ ((__packed__
));
442 struct btrfs_root_item
{
443 struct btrfs_inode_item inode
;
450 struct btrfs_disk_key drop_progress
;
453 } __attribute__ ((__packed__
));
455 #define BTRFS_FILE_EXTENT_REG 0
456 #define BTRFS_FILE_EXTENT_INLINE 1
458 struct btrfs_file_extent_item
{
462 * disk space consumed by the extent, checksum blocks are included
466 __le64 disk_num_bytes
;
468 * the logical offset in file blocks (no csums)
469 * this extent record is for. This allows a file extent to point
470 * into the middle of an existing extent on disk, sharing it
471 * between two snapshots (useful if some bytes in the middle of the
472 * extent have changed
476 * the logical number of file blocks (no csums included)
479 } __attribute__ ((__packed__
));
481 struct btrfs_csum_item
{
483 } __attribute__ ((__packed__
));
485 /* different types of block groups (and chunks) */
486 #define BTRFS_BLOCK_GROUP_DATA (1 << 0)
487 #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1)
488 #define BTRFS_BLOCK_GROUP_METADATA (1 << 2)
489 #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3)
490 #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4)
491 #define BTRFS_BLOCK_GROUP_DUP (1 << 5)
492 #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6)
494 struct btrfs_block_group_item
{
496 __le64 chunk_objectid
;
498 } __attribute__ ((__packed__
));
500 struct btrfs_space_info
{
508 struct list_head list
;
510 /* for block groups in our same type */
511 struct list_head block_groups
;
515 struct btrfs_free_space
{
516 struct rb_node bytes_index
;
517 struct rb_node offset_index
;
522 struct btrfs_block_group_cache
{
523 struct btrfs_key key
;
524 struct btrfs_block_group_item item
;
533 struct btrfs_space_info
*space_info
;
535 /* free space cache stuff */
536 struct rb_root free_space_bytes
;
537 struct rb_root free_space_offset
;
539 /* block group cache stuff */
540 struct rb_node cache_node
;
542 /* for block groups in the same raid type */
543 struct list_head list
;
546 struct btrfs_leaf_ref_tree
{
548 struct list_head list
;
553 struct btrfs_fs_devices
;
554 struct btrfs_fs_info
{
555 u8 fsid
[BTRFS_FSID_SIZE
];
556 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
557 struct btrfs_root
*extent_root
;
558 struct btrfs_root
*tree_root
;
559 struct btrfs_root
*chunk_root
;
560 struct btrfs_root
*dev_root
;
562 /* the log root tree is a directory of all the other log roots */
563 struct btrfs_root
*log_root_tree
;
564 struct radix_tree_root fs_roots_radix
;
566 /* block group cache stuff */
567 spinlock_t block_group_cache_lock
;
568 struct rb_root block_group_cache_tree
;
570 struct extent_io_tree pinned_extents
;
571 struct extent_io_tree pending_del
;
572 struct extent_io_tree extent_ins
;
574 /* logical->physical extent mapping */
575 struct btrfs_mapping_tree mapping_tree
;
578 u64 last_trans_committed
;
579 u64 last_trans_new_blockgroup
;
580 u64 open_ioctl_trans
;
581 unsigned long mount_opt
;
585 struct btrfs_transaction
*running_transaction
;
586 wait_queue_head_t transaction_throttle
;
587 wait_queue_head_t transaction_wait
;
588 wait_queue_head_t async_submit_wait
;
590 wait_queue_head_t tree_log_wait
;
592 struct btrfs_super_block super_copy
;
593 struct btrfs_super_block super_for_commit
;
594 struct block_device
*__bdev
;
595 struct super_block
*sb
;
596 struct inode
*btree_inode
;
597 struct backing_dev_info bdi
;
598 spinlock_t hash_lock
;
599 struct mutex trans_mutex
;
600 struct mutex tree_log_mutex
;
601 struct mutex transaction_kthread_mutex
;
602 struct mutex cleaner_mutex
;
603 struct mutex alloc_mutex
;
604 struct mutex chunk_mutex
;
605 struct mutex drop_mutex
;
606 struct mutex volume_mutex
;
607 struct mutex tree_reloc_mutex
;
608 struct list_head trans_list
;
609 struct list_head hashers
;
610 struct list_head dead_roots
;
612 atomic_t nr_async_submits
;
613 atomic_t async_submit_draining
;
614 atomic_t nr_async_bios
;
615 atomic_t tree_log_writers
;
616 atomic_t tree_log_commit
;
617 unsigned long tree_log_batch
;
618 u64 tree_log_transid
;
621 * this is used by the balancing code to wait for all the pending
624 spinlock_t ordered_extent_lock
;
625 struct list_head ordered_extents
;
626 struct list_head delalloc_inodes
;
629 * there is a pool of worker threads for checksumming during writes
630 * and a pool for checksumming after reads. This is because readers
631 * can run with FS locks held, and the writers may be waiting for
632 * those locks. We don't want ordering in the pending list to cause
633 * deadlocks, and so the two are serviced separately.
635 * A third pool does submit_bio to avoid deadlocking with the other
638 struct btrfs_workers workers
;
639 struct btrfs_workers endio_workers
;
640 struct btrfs_workers endio_write_workers
;
641 struct btrfs_workers submit_workers
;
643 * fixup workers take dirty pages that didn't properly go through
644 * the cow mechanism and make them safe to write. It happens
645 * for the sys_munmap function call path
647 struct btrfs_workers fixup_workers
;
648 struct task_struct
*transaction_kthread
;
649 struct task_struct
*cleaner_kthread
;
650 int thread_pool_size
;
652 /* tree relocation relocated fields */
653 struct extent_io_tree reloc_mapping_tree
;
654 struct list_head dead_reloc_roots
;
655 struct btrfs_leaf_ref_tree reloc_ref_tree
;
656 struct btrfs_leaf_ref_tree shared_ref_tree
;
658 struct kobject super_kobj
;
659 struct completion kobj_unregister
;
662 int log_root_recovering
;
664 atomic_t throttle_gen
;
667 struct list_head dirty_cowonly_roots
;
669 struct btrfs_fs_devices
*fs_devices
;
670 struct list_head space_info
;
671 spinlock_t delalloc_lock
;
672 spinlock_t new_trans_lock
;
678 spinlock_t ref_cache_lock
;
679 u64 total_ref_cache_size
;
681 u64 avail_data_alloc_bits
;
682 u64 avail_metadata_alloc_bits
;
683 u64 avail_system_alloc_bits
;
684 u64 data_alloc_profile
;
685 u64 metadata_alloc_profile
;
686 u64 system_alloc_profile
;
692 * in ram representation of the tree. extent_root is used for all allocations
693 * and for the extent tree extent_root root.
695 struct btrfs_dirty_root
;
697 struct extent_buffer
*node
;
699 /* the node lock is held while changing the node pointer */
700 spinlock_t node_lock
;
702 struct extent_buffer
*commit_root
;
703 struct btrfs_leaf_ref_tree
*ref_tree
;
704 struct btrfs_leaf_ref_tree ref_tree_struct
;
705 struct btrfs_dirty_root
*dirty_root
;
706 struct btrfs_root
*log_root
;
707 struct btrfs_root
*reloc_root
;
709 struct btrfs_root_item root_item
;
710 struct btrfs_key root_key
;
711 struct btrfs_fs_info
*fs_info
;
713 struct extent_io_tree dirty_log_pages
;
715 struct kobject root_kobj
;
716 struct completion kobj_unregister
;
717 struct mutex objectid_mutex
;
718 struct mutex log_mutex
;
723 /* data allocations are done in sectorsize units */
726 /* node allocations are done in nodesize units */
729 /* leaf allocations are done in leafsize units */
736 u64 last_inode_alloc
;
739 u64 defrag_trans_start
;
740 struct btrfs_key defrag_progress
;
741 struct btrfs_key defrag_max
;
747 /* the dirty list is only used by non-reference counted roots */
748 struct list_head dirty_list
;
750 spinlock_t list_lock
;
751 struct list_head dead_list
;
752 struct list_head orphan_list
;
757 * inode items have the data typically returned from stat and store other
758 * info about object characteristics. There is one for every file and dir in
761 #define BTRFS_INODE_ITEM_KEY 1
762 #define BTRFS_INODE_REF_KEY 2
763 #define BTRFS_XATTR_ITEM_KEY 8
764 #define BTRFS_ORPHAN_ITEM_KEY 9
765 /* reserve 2-15 close to the inode for later flexibility */
768 * dir items are the name -> inode pointers in a directory. There is one
769 * for every name in a directory.
771 #define BTRFS_DIR_LOG_ITEM_KEY 14
772 #define BTRFS_DIR_LOG_INDEX_KEY 15
773 #define BTRFS_DIR_ITEM_KEY 16
774 #define BTRFS_DIR_INDEX_KEY 17
776 * extent data is for file data
778 #define BTRFS_EXTENT_DATA_KEY 18
780 * csum items have the checksums for data in the extents
782 #define BTRFS_CSUM_ITEM_KEY 19
785 /* reserve 21-31 for other file/dir stuff */
788 * root items point to tree roots. There are typically in the root
789 * tree used by the super block to find all the other trees
791 #define BTRFS_ROOT_ITEM_KEY 32
793 * extent items are in the extent map tree. These record which blocks
794 * are used, and how many references there are to each block
796 #define BTRFS_EXTENT_ITEM_KEY 33
797 #define BTRFS_EXTENT_REF_KEY 34
800 * block groups give us hints into the extent allocation trees. Which
801 * blocks are free etc etc
803 #define BTRFS_BLOCK_GROUP_ITEM_KEY 50
805 #define BTRFS_DEV_EXTENT_KEY 75
806 #define BTRFS_DEV_ITEM_KEY 76
807 #define BTRFS_CHUNK_ITEM_KEY 77
810 * string items are for debugging. They just store a short string of
813 #define BTRFS_STRING_ITEM_KEY 253
815 #define BTRFS_MOUNT_NODATASUM (1 << 0)
816 #define BTRFS_MOUNT_NODATACOW (1 << 1)
817 #define BTRFS_MOUNT_NOBARRIER (1 << 2)
818 #define BTRFS_MOUNT_SSD (1 << 3)
819 #define BTRFS_MOUNT_DEGRADED (1 << 4)
821 #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt)
822 #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt)
823 #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \
828 #define BTRFS_INODE_NODATASUM (1 << 0)
829 #define BTRFS_INODE_NODATACOW (1 << 1)
830 #define BTRFS_INODE_READONLY (1 << 2)
831 #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \
833 #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \
835 #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \
837 /* some macros to generate set/get funcs for the struct fields. This
838 * assumes there is a lefoo_to_cpu for every type, so lets make a simple
841 #define le8_to_cpu(v) (v)
842 #define cpu_to_le8(v) (v)
845 #define read_eb_member(eb, ptr, type, member, result) ( \
846 read_extent_buffer(eb, (char *)(result), \
847 ((unsigned long)(ptr)) + \
848 offsetof(type, member), \
849 sizeof(((type *)0)->member)))
851 #define write_eb_member(eb, ptr, type, member, result) ( \
852 write_extent_buffer(eb, (char *)(result), \
853 ((unsigned long)(ptr)) + \
854 offsetof(type, member), \
855 sizeof(((type *)0)->member)))
857 #ifndef BTRFS_SETGET_FUNCS
858 #define BTRFS_SETGET_FUNCS(name, type, member, bits) \
859 u##bits btrfs_##name(struct extent_buffer *eb, type *s); \
860 void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val);
863 #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
864 static inline u##bits btrfs_##name(struct extent_buffer *eb) \
866 type *p = kmap_atomic(eb->first_page, KM_USER0); \
867 u##bits res = le##bits##_to_cpu(p->member); \
868 kunmap_atomic(p, KM_USER0); \
871 static inline void btrfs_set_##name(struct extent_buffer *eb, \
874 type *p = kmap_atomic(eb->first_page, KM_USER0); \
875 p->member = cpu_to_le##bits(val); \
876 kunmap_atomic(p, KM_USER0); \
879 #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
880 static inline u##bits btrfs_##name(type *s) \
882 return le##bits##_to_cpu(s->member); \
884 static inline void btrfs_set_##name(type *s, u##bits val) \
886 s->member = cpu_to_le##bits(val); \
889 BTRFS_SETGET_FUNCS(device_type
, struct btrfs_dev_item
, type
, 64);
890 BTRFS_SETGET_FUNCS(device_total_bytes
, struct btrfs_dev_item
, total_bytes
, 64);
891 BTRFS_SETGET_FUNCS(device_bytes_used
, struct btrfs_dev_item
, bytes_used
, 64);
892 BTRFS_SETGET_FUNCS(device_io_align
, struct btrfs_dev_item
, io_align
, 32);
893 BTRFS_SETGET_FUNCS(device_io_width
, struct btrfs_dev_item
, io_width
, 32);
894 BTRFS_SETGET_FUNCS(device_sector_size
, struct btrfs_dev_item
, sector_size
, 32);
895 BTRFS_SETGET_FUNCS(device_id
, struct btrfs_dev_item
, devid
, 64);
896 BTRFS_SETGET_FUNCS(device_group
, struct btrfs_dev_item
, dev_group
, 32);
897 BTRFS_SETGET_FUNCS(device_seek_speed
, struct btrfs_dev_item
, seek_speed
, 8);
898 BTRFS_SETGET_FUNCS(device_bandwidth
, struct btrfs_dev_item
, bandwidth
, 8);
900 BTRFS_SETGET_STACK_FUNCS(stack_device_type
, struct btrfs_dev_item
, type
, 64);
901 BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes
, struct btrfs_dev_item
,
903 BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used
, struct btrfs_dev_item
,
905 BTRFS_SETGET_STACK_FUNCS(stack_device_io_align
, struct btrfs_dev_item
,
907 BTRFS_SETGET_STACK_FUNCS(stack_device_io_width
, struct btrfs_dev_item
,
909 BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size
, struct btrfs_dev_item
,
911 BTRFS_SETGET_STACK_FUNCS(stack_device_id
, struct btrfs_dev_item
, devid
, 64);
912 BTRFS_SETGET_STACK_FUNCS(stack_device_group
, struct btrfs_dev_item
,
914 BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed
, struct btrfs_dev_item
,
916 BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth
, struct btrfs_dev_item
,
919 static inline char *btrfs_device_uuid(struct btrfs_dev_item
*d
)
921 return (char *)d
+ offsetof(struct btrfs_dev_item
, uuid
);
924 BTRFS_SETGET_FUNCS(chunk_length
, struct btrfs_chunk
, length
, 64);
925 BTRFS_SETGET_FUNCS(chunk_owner
, struct btrfs_chunk
, owner
, 64);
926 BTRFS_SETGET_FUNCS(chunk_stripe_len
, struct btrfs_chunk
, stripe_len
, 64);
927 BTRFS_SETGET_FUNCS(chunk_io_align
, struct btrfs_chunk
, io_align
, 32);
928 BTRFS_SETGET_FUNCS(chunk_io_width
, struct btrfs_chunk
, io_width
, 32);
929 BTRFS_SETGET_FUNCS(chunk_sector_size
, struct btrfs_chunk
, sector_size
, 32);
930 BTRFS_SETGET_FUNCS(chunk_type
, struct btrfs_chunk
, type
, 64);
931 BTRFS_SETGET_FUNCS(chunk_num_stripes
, struct btrfs_chunk
, num_stripes
, 16);
932 BTRFS_SETGET_FUNCS(chunk_sub_stripes
, struct btrfs_chunk
, sub_stripes
, 16);
933 BTRFS_SETGET_FUNCS(stripe_devid
, struct btrfs_stripe
, devid
, 64);
934 BTRFS_SETGET_FUNCS(stripe_offset
, struct btrfs_stripe
, offset
, 64);
936 static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe
*s
)
938 return (char *)s
+ offsetof(struct btrfs_stripe
, dev_uuid
);
941 BTRFS_SETGET_STACK_FUNCS(stack_chunk_length
, struct btrfs_chunk
, length
, 64);
942 BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner
, struct btrfs_chunk
, owner
, 64);
943 BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len
, struct btrfs_chunk
,
945 BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align
, struct btrfs_chunk
,
947 BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width
, struct btrfs_chunk
,
949 BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size
, struct btrfs_chunk
,
951 BTRFS_SETGET_STACK_FUNCS(stack_chunk_type
, struct btrfs_chunk
, type
, 64);
952 BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes
, struct btrfs_chunk
,
954 BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes
, struct btrfs_chunk
,
956 BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid
, struct btrfs_stripe
, devid
, 64);
957 BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset
, struct btrfs_stripe
, offset
, 64);
959 static inline struct btrfs_stripe
*btrfs_stripe_nr(struct btrfs_chunk
*c
,
962 unsigned long offset
= (unsigned long)c
;
963 offset
+= offsetof(struct btrfs_chunk
, stripe
);
964 offset
+= nr
* sizeof(struct btrfs_stripe
);
965 return (struct btrfs_stripe
*)offset
;
968 static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk
*c
, int nr
)
970 return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c
, nr
));
973 static inline u64
btrfs_stripe_offset_nr(struct extent_buffer
*eb
,
974 struct btrfs_chunk
*c
, int nr
)
976 return btrfs_stripe_offset(eb
, btrfs_stripe_nr(c
, nr
));
979 static inline void btrfs_set_stripe_offset_nr(struct extent_buffer
*eb
,
980 struct btrfs_chunk
*c
, int nr
,
983 btrfs_set_stripe_offset(eb
, btrfs_stripe_nr(c
, nr
), val
);
986 static inline u64
btrfs_stripe_devid_nr(struct extent_buffer
*eb
,
987 struct btrfs_chunk
*c
, int nr
)
989 return btrfs_stripe_devid(eb
, btrfs_stripe_nr(c
, nr
));
992 static inline void btrfs_set_stripe_devid_nr(struct extent_buffer
*eb
,
993 struct btrfs_chunk
*c
, int nr
,
996 btrfs_set_stripe_devid(eb
, btrfs_stripe_nr(c
, nr
), val
);
999 /* struct btrfs_block_group_item */
1000 BTRFS_SETGET_STACK_FUNCS(block_group_used
, struct btrfs_block_group_item
,
1002 BTRFS_SETGET_FUNCS(disk_block_group_used
, struct btrfs_block_group_item
,
1004 BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid
,
1005 struct btrfs_block_group_item
, chunk_objectid
, 64);
1007 BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid
,
1008 struct btrfs_block_group_item
, chunk_objectid
, 64);
1009 BTRFS_SETGET_FUNCS(disk_block_group_flags
,
1010 struct btrfs_block_group_item
, flags
, 64);
1011 BTRFS_SETGET_STACK_FUNCS(block_group_flags
,
1012 struct btrfs_block_group_item
, flags
, 64);
1014 /* struct btrfs_inode_ref */
1015 BTRFS_SETGET_FUNCS(inode_ref_name_len
, struct btrfs_inode_ref
, name_len
, 16);
1016 BTRFS_SETGET_FUNCS(inode_ref_index
, struct btrfs_inode_ref
, index
, 64);
1018 /* struct btrfs_inode_item */
1019 BTRFS_SETGET_FUNCS(inode_generation
, struct btrfs_inode_item
, generation
, 64);
1020 BTRFS_SETGET_FUNCS(inode_transid
, struct btrfs_inode_item
, transid
, 64);
1021 BTRFS_SETGET_FUNCS(inode_size
, struct btrfs_inode_item
, size
, 64);
1022 BTRFS_SETGET_FUNCS(inode_nblocks
, struct btrfs_inode_item
, nblocks
, 64);
1023 BTRFS_SETGET_FUNCS(inode_block_group
, struct btrfs_inode_item
, block_group
, 64);
1024 BTRFS_SETGET_FUNCS(inode_nlink
, struct btrfs_inode_item
, nlink
, 32);
1025 BTRFS_SETGET_FUNCS(inode_uid
, struct btrfs_inode_item
, uid
, 32);
1026 BTRFS_SETGET_FUNCS(inode_gid
, struct btrfs_inode_item
, gid
, 32);
1027 BTRFS_SETGET_FUNCS(inode_mode
, struct btrfs_inode_item
, mode
, 32);
1028 BTRFS_SETGET_FUNCS(inode_rdev
, struct btrfs_inode_item
, rdev
, 64);
1029 BTRFS_SETGET_FUNCS(inode_flags
, struct btrfs_inode_item
, flags
, 16);
1030 BTRFS_SETGET_FUNCS(inode_compat_flags
, struct btrfs_inode_item
,
1033 static inline struct btrfs_timespec
*
1034 btrfs_inode_atime(struct btrfs_inode_item
*inode_item
)
1036 unsigned long ptr
= (unsigned long)inode_item
;
1037 ptr
+= offsetof(struct btrfs_inode_item
, atime
);
1038 return (struct btrfs_timespec
*)ptr
;
1041 static inline struct btrfs_timespec
*
1042 btrfs_inode_mtime(struct btrfs_inode_item
*inode_item
)
1044 unsigned long ptr
= (unsigned long)inode_item
;
1045 ptr
+= offsetof(struct btrfs_inode_item
, mtime
);
1046 return (struct btrfs_timespec
*)ptr
;
1049 static inline struct btrfs_timespec
*
1050 btrfs_inode_ctime(struct btrfs_inode_item
*inode_item
)
1052 unsigned long ptr
= (unsigned long)inode_item
;
1053 ptr
+= offsetof(struct btrfs_inode_item
, ctime
);
1054 return (struct btrfs_timespec
*)ptr
;
1057 static inline struct btrfs_timespec
*
1058 btrfs_inode_otime(struct btrfs_inode_item
*inode_item
)
1060 unsigned long ptr
= (unsigned long)inode_item
;
1061 ptr
+= offsetof(struct btrfs_inode_item
, otime
);
1062 return (struct btrfs_timespec
*)ptr
;
1065 BTRFS_SETGET_FUNCS(timespec_sec
, struct btrfs_timespec
, sec
, 64);
1066 BTRFS_SETGET_FUNCS(timespec_nsec
, struct btrfs_timespec
, nsec
, 32);
1068 /* struct btrfs_dev_extent */
1069 BTRFS_SETGET_FUNCS(dev_extent_chunk_tree
, struct btrfs_dev_extent
,
1071 BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid
, struct btrfs_dev_extent
,
1072 chunk_objectid
, 64);
1073 BTRFS_SETGET_FUNCS(dev_extent_chunk_offset
, struct btrfs_dev_extent
,
1075 BTRFS_SETGET_FUNCS(dev_extent_length
, struct btrfs_dev_extent
, length
, 64);
1077 static inline u8
*btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent
*dev
)
1079 unsigned long ptr
= offsetof(struct btrfs_dev_extent
, chunk_tree_uuid
);
1080 return (u8
*)((unsigned long)dev
+ ptr
);
1083 /* struct btrfs_extent_ref */
1084 BTRFS_SETGET_FUNCS(ref_root
, struct btrfs_extent_ref
, root
, 64);
1085 BTRFS_SETGET_FUNCS(ref_generation
, struct btrfs_extent_ref
, generation
, 64);
1086 BTRFS_SETGET_FUNCS(ref_objectid
, struct btrfs_extent_ref
, objectid
, 64);
1087 BTRFS_SETGET_FUNCS(ref_offset
, struct btrfs_extent_ref
, offset
, 64);
1088 BTRFS_SETGET_FUNCS(ref_num_refs
, struct btrfs_extent_ref
, num_refs
, 32);
1090 BTRFS_SETGET_STACK_FUNCS(stack_ref_root
, struct btrfs_extent_ref
, root
, 64);
1091 BTRFS_SETGET_STACK_FUNCS(stack_ref_generation
, struct btrfs_extent_ref
,
1093 BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid
, struct btrfs_extent_ref
,
1095 BTRFS_SETGET_STACK_FUNCS(stack_ref_offset
, struct btrfs_extent_ref
,
1097 BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs
, struct btrfs_extent_ref
,
1100 /* struct btrfs_extent_item */
1101 BTRFS_SETGET_FUNCS(extent_refs
, struct btrfs_extent_item
, refs
, 32);
1102 BTRFS_SETGET_STACK_FUNCS(stack_extent_refs
, struct btrfs_extent_item
,
1105 /* struct btrfs_node */
1106 BTRFS_SETGET_FUNCS(key_blockptr
, struct btrfs_key_ptr
, blockptr
, 64);
1107 BTRFS_SETGET_FUNCS(key_generation
, struct btrfs_key_ptr
, generation
, 64);
1109 static inline u64
btrfs_node_blockptr(struct extent_buffer
*eb
, int nr
)
1112 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1113 sizeof(struct btrfs_key_ptr
) * nr
;
1114 return btrfs_key_blockptr(eb
, (struct btrfs_key_ptr
*)ptr
);
1117 static inline void btrfs_set_node_blockptr(struct extent_buffer
*eb
,
1121 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1122 sizeof(struct btrfs_key_ptr
) * nr
;
1123 btrfs_set_key_blockptr(eb
, (struct btrfs_key_ptr
*)ptr
, val
);
1126 static inline u64
btrfs_node_ptr_generation(struct extent_buffer
*eb
, int nr
)
1129 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1130 sizeof(struct btrfs_key_ptr
) * nr
;
1131 return btrfs_key_generation(eb
, (struct btrfs_key_ptr
*)ptr
);
1134 static inline void btrfs_set_node_ptr_generation(struct extent_buffer
*eb
,
1138 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1139 sizeof(struct btrfs_key_ptr
) * nr
;
1140 btrfs_set_key_generation(eb
, (struct btrfs_key_ptr
*)ptr
, val
);
1143 static inline unsigned long btrfs_node_key_ptr_offset(int nr
)
1145 return offsetof(struct btrfs_node
, ptrs
) +
1146 sizeof(struct btrfs_key_ptr
) * nr
;
1149 void btrfs_node_key(struct extent_buffer
*eb
,
1150 struct btrfs_disk_key
*disk_key
, int nr
);
1152 static inline void btrfs_set_node_key(struct extent_buffer
*eb
,
1153 struct btrfs_disk_key
*disk_key
, int nr
)
1156 ptr
= btrfs_node_key_ptr_offset(nr
);
1157 write_eb_member(eb
, (struct btrfs_key_ptr
*)ptr
,
1158 struct btrfs_key_ptr
, key
, disk_key
);
1161 /* struct btrfs_item */
1162 BTRFS_SETGET_FUNCS(item_offset
, struct btrfs_item
, offset
, 32);
1163 BTRFS_SETGET_FUNCS(item_size
, struct btrfs_item
, size
, 32);
1165 static inline unsigned long btrfs_item_nr_offset(int nr
)
1167 return offsetof(struct btrfs_leaf
, items
) +
1168 sizeof(struct btrfs_item
) * nr
;
1171 static inline struct btrfs_item
*btrfs_item_nr(struct extent_buffer
*eb
,
1174 return (struct btrfs_item
*)btrfs_item_nr_offset(nr
);
1177 static inline u32
btrfs_item_end(struct extent_buffer
*eb
,
1178 struct btrfs_item
*item
)
1180 return btrfs_item_offset(eb
, item
) + btrfs_item_size(eb
, item
);
1183 static inline u32
btrfs_item_end_nr(struct extent_buffer
*eb
, int nr
)
1185 return btrfs_item_end(eb
, btrfs_item_nr(eb
, nr
));
1188 static inline u32
btrfs_item_offset_nr(struct extent_buffer
*eb
, int nr
)
1190 return btrfs_item_offset(eb
, btrfs_item_nr(eb
, nr
));
1193 static inline u32
btrfs_item_size_nr(struct extent_buffer
*eb
, int nr
)
1195 return btrfs_item_size(eb
, btrfs_item_nr(eb
, nr
));
1198 static inline void btrfs_item_key(struct extent_buffer
*eb
,
1199 struct btrfs_disk_key
*disk_key
, int nr
)
1201 struct btrfs_item
*item
= btrfs_item_nr(eb
, nr
);
1202 read_eb_member(eb
, item
, struct btrfs_item
, key
, disk_key
);
1205 static inline void btrfs_set_item_key(struct extent_buffer
*eb
,
1206 struct btrfs_disk_key
*disk_key
, int nr
)
1208 struct btrfs_item
*item
= btrfs_item_nr(eb
, nr
);
1209 write_eb_member(eb
, item
, struct btrfs_item
, key
, disk_key
);
1212 BTRFS_SETGET_FUNCS(dir_log_end
, struct btrfs_dir_log_item
, end
, 64);
1214 /* struct btrfs_dir_item */
1215 BTRFS_SETGET_FUNCS(dir_data_len
, struct btrfs_dir_item
, data_len
, 16);
1216 BTRFS_SETGET_FUNCS(dir_type
, struct btrfs_dir_item
, type
, 8);
1217 BTRFS_SETGET_FUNCS(dir_name_len
, struct btrfs_dir_item
, name_len
, 16);
1218 BTRFS_SETGET_FUNCS(dir_transid
, struct btrfs_dir_item
, transid
, 64);
1220 static inline void btrfs_dir_item_key(struct extent_buffer
*eb
,
1221 struct btrfs_dir_item
*item
,
1222 struct btrfs_disk_key
*key
)
1224 read_eb_member(eb
, item
, struct btrfs_dir_item
, location
, key
);
1227 static inline void btrfs_set_dir_item_key(struct extent_buffer
*eb
,
1228 struct btrfs_dir_item
*item
,
1229 struct btrfs_disk_key
*key
)
1231 write_eb_member(eb
, item
, struct btrfs_dir_item
, location
, key
);
1234 /* struct btrfs_disk_key */
1235 BTRFS_SETGET_STACK_FUNCS(disk_key_objectid
, struct btrfs_disk_key
,
1237 BTRFS_SETGET_STACK_FUNCS(disk_key_offset
, struct btrfs_disk_key
, offset
, 64);
1238 BTRFS_SETGET_STACK_FUNCS(disk_key_type
, struct btrfs_disk_key
, type
, 8);
1240 static inline void btrfs_disk_key_to_cpu(struct btrfs_key
*cpu
,
1241 struct btrfs_disk_key
*disk
)
1243 cpu
->offset
= le64_to_cpu(disk
->offset
);
1244 cpu
->type
= disk
->type
;
1245 cpu
->objectid
= le64_to_cpu(disk
->objectid
);
1248 static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key
*disk
,
1249 struct btrfs_key
*cpu
)
1251 disk
->offset
= cpu_to_le64(cpu
->offset
);
1252 disk
->type
= cpu
->type
;
1253 disk
->objectid
= cpu_to_le64(cpu
->objectid
);
1256 static inline void btrfs_node_key_to_cpu(struct extent_buffer
*eb
,
1257 struct btrfs_key
*key
, int nr
)
1259 struct btrfs_disk_key disk_key
;
1260 btrfs_node_key(eb
, &disk_key
, nr
);
1261 btrfs_disk_key_to_cpu(key
, &disk_key
);
1264 static inline void btrfs_item_key_to_cpu(struct extent_buffer
*eb
,
1265 struct btrfs_key
*key
, int nr
)
1267 struct btrfs_disk_key disk_key
;
1268 btrfs_item_key(eb
, &disk_key
, nr
);
1269 btrfs_disk_key_to_cpu(key
, &disk_key
);
1272 static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer
*eb
,
1273 struct btrfs_dir_item
*item
,
1274 struct btrfs_key
*key
)
1276 struct btrfs_disk_key disk_key
;
1277 btrfs_dir_item_key(eb
, item
, &disk_key
);
1278 btrfs_disk_key_to_cpu(key
, &disk_key
);
1282 static inline u8
btrfs_key_type(struct btrfs_key
*key
)
1287 static inline void btrfs_set_key_type(struct btrfs_key
*key
, u8 val
)
1292 /* struct btrfs_header */
1293 BTRFS_SETGET_HEADER_FUNCS(header_bytenr
, struct btrfs_header
, bytenr
, 64);
1294 BTRFS_SETGET_HEADER_FUNCS(header_generation
, struct btrfs_header
,
1296 BTRFS_SETGET_HEADER_FUNCS(header_owner
, struct btrfs_header
, owner
, 64);
1297 BTRFS_SETGET_HEADER_FUNCS(header_nritems
, struct btrfs_header
, nritems
, 32);
1298 BTRFS_SETGET_HEADER_FUNCS(header_flags
, struct btrfs_header
, flags
, 64);
1299 BTRFS_SETGET_HEADER_FUNCS(header_level
, struct btrfs_header
, level
, 8);
1301 static inline int btrfs_header_flag(struct extent_buffer
*eb
, u64 flag
)
1303 return (btrfs_header_flags(eb
) & flag
) == flag
;
1306 static inline int btrfs_set_header_flag(struct extent_buffer
*eb
, u64 flag
)
1308 u64 flags
= btrfs_header_flags(eb
);
1309 btrfs_set_header_flags(eb
, flags
| flag
);
1310 return (flags
& flag
) == flag
;
1313 static inline int btrfs_clear_header_flag(struct extent_buffer
*eb
, u64 flag
)
1315 u64 flags
= btrfs_header_flags(eb
);
1316 btrfs_set_header_flags(eb
, flags
& ~flag
);
1317 return (flags
& flag
) == flag
;
1320 static inline u8
*btrfs_header_fsid(struct extent_buffer
*eb
)
1322 unsigned long ptr
= offsetof(struct btrfs_header
, fsid
);
1326 static inline u8
*btrfs_header_chunk_tree_uuid(struct extent_buffer
*eb
)
1328 unsigned long ptr
= offsetof(struct btrfs_header
, chunk_tree_uuid
);
1332 static inline u8
*btrfs_super_fsid(struct extent_buffer
*eb
)
1334 unsigned long ptr
= offsetof(struct btrfs_super_block
, fsid
);
1338 static inline u8
*btrfs_header_csum(struct extent_buffer
*eb
)
1340 unsigned long ptr
= offsetof(struct btrfs_header
, csum
);
1344 static inline struct btrfs_node
*btrfs_buffer_node(struct extent_buffer
*eb
)
1349 static inline struct btrfs_leaf
*btrfs_buffer_leaf(struct extent_buffer
*eb
)
1354 static inline struct btrfs_header
*btrfs_buffer_header(struct extent_buffer
*eb
)
1359 static inline int btrfs_is_leaf(struct extent_buffer
*eb
)
1361 return (btrfs_header_level(eb
) == 0);
1364 /* struct btrfs_root_item */
1365 BTRFS_SETGET_FUNCS(disk_root_refs
, struct btrfs_root_item
, refs
, 32);
1366 BTRFS_SETGET_FUNCS(disk_root_bytenr
, struct btrfs_root_item
, bytenr
, 64);
1367 BTRFS_SETGET_FUNCS(disk_root_level
, struct btrfs_root_item
, level
, 8);
1369 BTRFS_SETGET_STACK_FUNCS(root_bytenr
, struct btrfs_root_item
, bytenr
, 64);
1370 BTRFS_SETGET_STACK_FUNCS(root_level
, struct btrfs_root_item
, level
, 8);
1371 BTRFS_SETGET_STACK_FUNCS(root_dirid
, struct btrfs_root_item
, root_dirid
, 64);
1372 BTRFS_SETGET_STACK_FUNCS(root_refs
, struct btrfs_root_item
, refs
, 32);
1373 BTRFS_SETGET_STACK_FUNCS(root_flags
, struct btrfs_root_item
, flags
, 32);
1374 BTRFS_SETGET_STACK_FUNCS(root_used
, struct btrfs_root_item
, bytes_used
, 64);
1375 BTRFS_SETGET_STACK_FUNCS(root_limit
, struct btrfs_root_item
, byte_limit
, 64);
1377 /* struct btrfs_super_block */
1378 BTRFS_SETGET_STACK_FUNCS(super_bytenr
, struct btrfs_super_block
, bytenr
, 64);
1379 BTRFS_SETGET_STACK_FUNCS(super_flags
, struct btrfs_super_block
, flags
, 64);
1380 BTRFS_SETGET_STACK_FUNCS(super_generation
, struct btrfs_super_block
,
1382 BTRFS_SETGET_STACK_FUNCS(super_root
, struct btrfs_super_block
, root
, 64);
1383 BTRFS_SETGET_STACK_FUNCS(super_sys_array_size
,
1384 struct btrfs_super_block
, sys_chunk_array_size
, 32);
1385 BTRFS_SETGET_STACK_FUNCS(super_root_level
, struct btrfs_super_block
,
1387 BTRFS_SETGET_STACK_FUNCS(super_chunk_root
, struct btrfs_super_block
,
1389 BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level
, struct btrfs_super_block
,
1390 chunk_root_level
, 8);
1391 BTRFS_SETGET_STACK_FUNCS(super_log_root
, struct btrfs_super_block
,
1393 BTRFS_SETGET_STACK_FUNCS(super_log_root_level
, struct btrfs_super_block
,
1395 BTRFS_SETGET_STACK_FUNCS(super_total_bytes
, struct btrfs_super_block
,
1397 BTRFS_SETGET_STACK_FUNCS(super_bytes_used
, struct btrfs_super_block
,
1399 BTRFS_SETGET_STACK_FUNCS(super_sectorsize
, struct btrfs_super_block
,
1401 BTRFS_SETGET_STACK_FUNCS(super_nodesize
, struct btrfs_super_block
,
1403 BTRFS_SETGET_STACK_FUNCS(super_leafsize
, struct btrfs_super_block
,
1405 BTRFS_SETGET_STACK_FUNCS(super_stripesize
, struct btrfs_super_block
,
1407 BTRFS_SETGET_STACK_FUNCS(super_root_dir
, struct btrfs_super_block
,
1408 root_dir_objectid
, 64);
1409 BTRFS_SETGET_STACK_FUNCS(super_num_devices
, struct btrfs_super_block
,
1412 static inline unsigned long btrfs_leaf_data(struct extent_buffer
*l
)
1414 return offsetof(struct btrfs_leaf
, items
);
1417 /* struct btrfs_file_extent_item */
1418 BTRFS_SETGET_FUNCS(file_extent_type
, struct btrfs_file_extent_item
, type
, 8);
1420 static inline unsigned long btrfs_file_extent_inline_start(struct
1421 btrfs_file_extent_item
*e
)
1423 unsigned long offset
= (unsigned long)e
;
1424 offset
+= offsetof(struct btrfs_file_extent_item
, disk_bytenr
);
1428 static inline u32
btrfs_file_extent_calc_inline_size(u32 datasize
)
1430 return offsetof(struct btrfs_file_extent_item
, disk_bytenr
) + datasize
;
1433 static inline u32
btrfs_file_extent_inline_len(struct extent_buffer
*eb
,
1434 struct btrfs_item
*e
)
1436 unsigned long offset
;
1437 offset
= offsetof(struct btrfs_file_extent_item
, disk_bytenr
);
1438 return btrfs_item_size(eb
, e
) - offset
;
1441 BTRFS_SETGET_FUNCS(file_extent_disk_bytenr
, struct btrfs_file_extent_item
,
1443 BTRFS_SETGET_FUNCS(file_extent_generation
, struct btrfs_file_extent_item
,
1445 BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes
, struct btrfs_file_extent_item
,
1446 disk_num_bytes
, 64);
1447 BTRFS_SETGET_FUNCS(file_extent_offset
, struct btrfs_file_extent_item
,
1449 BTRFS_SETGET_FUNCS(file_extent_num_bytes
, struct btrfs_file_extent_item
,
1452 static inline struct btrfs_root
*btrfs_sb(struct super_block
*sb
)
1454 return sb
->s_fs_info
;
1457 static inline int btrfs_set_root_name(struct btrfs_root
*root
,
1458 const char *name
, int len
)
1460 /* if we already have a name just free it */
1464 root
->name
= kmalloc(len
+1, GFP_KERNEL
);
1468 memcpy(root
->name
, name
, len
);
1469 root
->name
[len
] ='\0';
1474 static inline u32
btrfs_level_size(struct btrfs_root
*root
, int level
) {
1476 return root
->leafsize
;
1477 return root
->nodesize
;
1480 /* helper function to cast into the data area of the leaf. */
1481 #define btrfs_item_ptr(leaf, slot, type) \
1482 ((type *)(btrfs_leaf_data(leaf) + \
1483 btrfs_item_offset_nr(leaf, slot)))
1485 #define btrfs_item_ptr_offset(leaf, slot) \
1486 ((unsigned long)(btrfs_leaf_data(leaf) + \
1487 btrfs_item_offset_nr(leaf, slot)))
1489 static inline struct dentry
*fdentry(struct file
*file
)
1491 return file
->f_path
.dentry
;
1495 int btrfs_lookup_extent(struct btrfs_root
*root
, u64 start
, u64 len
);
1496 int btrfs_lookup_extent_ref(struct btrfs_trans_handle
*trans
,
1497 struct btrfs_root
*root
, u64 bytenr
,
1498 u64 num_bytes
, u32
*refs
);
1499 int btrfs_update_pinned_extents(struct btrfs_root
*root
,
1500 u64 bytenr
, u64 num
, int pin
);
1501 int btrfs_drop_leaf_ref(struct btrfs_trans_handle
*trans
,
1502 struct btrfs_root
*root
, struct extent_buffer
*leaf
);
1503 int btrfs_cross_ref_exists(struct btrfs_trans_handle
*trans
,
1504 struct btrfs_root
*root
,
1505 struct btrfs_key
*key
, u64 bytenr
);
1506 int btrfs_extent_post_op(struct btrfs_trans_handle
*trans
,
1507 struct btrfs_root
*root
);
1508 int btrfs_copy_pinned(struct btrfs_root
*root
, struct extent_io_tree
*copy
);
1509 struct btrfs_block_group_cache
*btrfs_lookup_block_group(struct
1510 btrfs_fs_info
*info
,
1512 struct btrfs_block_group_cache
*btrfs_find_block_group(struct btrfs_root
*root
,
1513 struct btrfs_block_group_cache
1514 *hint
, u64 search_start
,
1515 int data
, int owner
);
1516 struct extent_buffer
*btrfs_alloc_free_block(struct btrfs_trans_handle
*trans
,
1517 struct btrfs_root
*root
,
1518 u32 blocksize
, u64 parent
,
1524 struct extent_buffer
*btrfs_init_new_buffer(struct btrfs_trans_handle
*trans
,
1525 struct btrfs_root
*root
,
1526 u64 bytenr
, u32 blocksize
);
1527 int btrfs_insert_extent_backref(struct btrfs_trans_handle
*trans
,
1528 struct btrfs_root
*root
,
1529 struct btrfs_path
*path
,
1530 u64 bytenr
, u64 parent
,
1531 u64 root_objectid
, u64 ref_generation
,
1532 u64 owner
, u64 owner_offset
);
1533 int btrfs_alloc_extent(struct btrfs_trans_handle
*trans
,
1534 struct btrfs_root
*root
,
1535 u64 num_bytes
, u64 parent
, u64 min_bytes
,
1536 u64 root_objectid
, u64 ref_generation
,
1537 u64 owner
, u64 owner_offset
,
1538 u64 empty_size
, u64 hint_byte
,
1539 u64 search_end
, struct btrfs_key
*ins
, u64 data
);
1540 int btrfs_alloc_reserved_extent(struct btrfs_trans_handle
*trans
,
1541 struct btrfs_root
*root
, u64 parent
,
1542 u64 root_objectid
, u64 ref_generation
,
1543 u64 owner
, u64 owner_offset
,
1544 struct btrfs_key
*ins
);
1545 int btrfs_alloc_logged_extent(struct btrfs_trans_handle
*trans
,
1546 struct btrfs_root
*root
, u64 parent
,
1547 u64 root_objectid
, u64 ref_generation
,
1548 u64 owner
, u64 owner_offset
,
1549 struct btrfs_key
*ins
);
1550 int btrfs_reserve_extent(struct btrfs_trans_handle
*trans
,
1551 struct btrfs_root
*root
,
1552 u64 num_bytes
, u64 min_alloc_size
,
1553 u64 empty_size
, u64 hint_byte
,
1554 u64 search_end
, struct btrfs_key
*ins
,
1556 int btrfs_inc_ref(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1557 struct extent_buffer
*orig_buf
, struct extent_buffer
*buf
,
1559 int btrfs_cache_ref(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1560 struct extent_buffer
*buf
, u32 nr_extents
);
1561 int btrfs_update_ref(struct btrfs_trans_handle
*trans
,
1562 struct btrfs_root
*root
, struct extent_buffer
*orig_buf
,
1563 struct extent_buffer
*buf
, int start_slot
, int nr
);
1564 int btrfs_free_extent(struct btrfs_trans_handle
*trans
,
1565 struct btrfs_root
*root
,
1566 u64 bytenr
, u64 num_bytes
, u64 parent
,
1567 u64 root_objectid
, u64 ref_generation
,
1568 u64 owner_objectid
, u64 owner_offset
, int pin
);
1569 int btrfs_free_reserved_extent(struct btrfs_root
*root
, u64 start
, u64 len
);
1570 int btrfs_finish_extent_commit(struct btrfs_trans_handle
*trans
,
1571 struct btrfs_root
*root
,
1572 struct extent_io_tree
*unpin
);
1573 int btrfs_inc_extent_ref(struct btrfs_trans_handle
*trans
,
1574 struct btrfs_root
*root
,
1575 u64 bytenr
, u64 num_bytes
, u64 parent
,
1576 u64 root_objectid
, u64 ref_generation
,
1577 u64 owner
, u64 owner_offset
);
1578 int btrfs_update_extent_ref(struct btrfs_trans_handle
*trans
,
1579 struct btrfs_root
*root
, u64 bytenr
,
1580 u64 orig_parent
, u64 parent
,
1581 u64 root_objectid
, u64 ref_generation
,
1582 u64 owner
, u64 owner_offset
);
1583 int btrfs_write_dirty_block_groups(struct btrfs_trans_handle
*trans
,
1584 struct btrfs_root
*root
);
1585 int btrfs_free_block_groups(struct btrfs_fs_info
*info
);
1586 int btrfs_read_block_groups(struct btrfs_root
*root
);
1587 int btrfs_make_block_group(struct btrfs_trans_handle
*trans
,
1588 struct btrfs_root
*root
, u64 bytes_used
,
1589 u64 type
, u64 chunk_objectid
, u64 chunk_offset
,
1591 int btrfs_remove_block_group(struct btrfs_trans_handle
*trans
,
1592 struct btrfs_root
*root
, u64 group_start
);
1593 int btrfs_relocate_block_group(struct btrfs_root
*root
, u64 group_start
);
1594 int btrfs_free_reloc_root(struct btrfs_root
*root
);
1595 int btrfs_drop_dead_reloc_roots(struct btrfs_root
*root
);
1596 int btrfs_add_reloc_mapping(struct btrfs_root
*root
, u64 orig_bytenr
,
1597 u64 num_bytes
, u64 new_bytenr
);
1598 int btrfs_get_reloc_mapping(struct btrfs_root
*root
, u64 orig_bytenr
,
1599 u64 num_bytes
, u64
*new_bytenr
);
1600 void btrfs_free_reloc_mappings(struct btrfs_root
*root
);
1601 int btrfs_reloc_tree_cache_ref(struct btrfs_trans_handle
*trans
,
1602 struct btrfs_root
*root
,
1603 struct extent_buffer
*buf
, u64 orig_start
);
1604 int btrfs_add_dead_reloc_root(struct btrfs_root
*root
);
1605 int btrfs_cleanup_reloc_trees(struct btrfs_root
*root
);
1607 int btrfs_previous_item(struct btrfs_root
*root
,
1608 struct btrfs_path
*path
, u64 min_objectid
,
1610 int btrfs_merge_path(struct btrfs_trans_handle
*trans
,
1611 struct btrfs_root
*root
,
1612 struct btrfs_key
*node_keys
,
1613 u64
*nodes
, int lowest_level
);
1614 int btrfs_set_item_key_safe(struct btrfs_trans_handle
*trans
,
1615 struct btrfs_root
*root
, struct btrfs_path
*path
,
1616 struct btrfs_key
*new_key
);
1617 struct extent_buffer
*btrfs_root_node(struct btrfs_root
*root
);
1618 struct extent_buffer
*btrfs_lock_root_node(struct btrfs_root
*root
);
1619 int btrfs_find_next_key(struct btrfs_root
*root
, struct btrfs_path
*path
,
1620 struct btrfs_key
*key
, int lowest_level
,
1621 int cache_only
, u64 min_trans
);
1622 int btrfs_search_forward(struct btrfs_root
*root
, struct btrfs_key
*min_key
,
1623 struct btrfs_key
*max_key
,
1624 struct btrfs_path
*path
, int cache_only
,
1626 int btrfs_cow_block(struct btrfs_trans_handle
*trans
,
1627 struct btrfs_root
*root
, struct extent_buffer
*buf
,
1628 struct extent_buffer
*parent
, int parent_slot
,
1629 struct extent_buffer
**cow_ret
, u64 prealloc_dest
);
1630 int btrfs_copy_root(struct btrfs_trans_handle
*trans
,
1631 struct btrfs_root
*root
,
1632 struct extent_buffer
*buf
,
1633 struct extent_buffer
**cow_ret
, u64 new_root_objectid
);
1634 int btrfs_extend_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
1635 *root
, struct btrfs_path
*path
, u32 data_size
);
1636 int btrfs_truncate_item(struct btrfs_trans_handle
*trans
,
1637 struct btrfs_root
*root
,
1638 struct btrfs_path
*path
,
1639 u32 new_size
, int from_end
);
1640 int btrfs_search_slot(struct btrfs_trans_handle
*trans
, struct btrfs_root
1641 *root
, struct btrfs_key
*key
, struct btrfs_path
*p
, int
1643 int btrfs_realloc_node(struct btrfs_trans_handle
*trans
,
1644 struct btrfs_root
*root
, struct extent_buffer
*parent
,
1645 int start_slot
, int cache_only
, u64
*last_ret
,
1646 struct btrfs_key
*progress
);
1647 void btrfs_release_path(struct btrfs_root
*root
, struct btrfs_path
*p
);
1648 struct btrfs_path
*btrfs_alloc_path(void);
1649 void btrfs_free_path(struct btrfs_path
*p
);
1650 void btrfs_init_path(struct btrfs_path
*p
);
1651 int btrfs_del_items(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1652 struct btrfs_path
*path
, int slot
, int nr
);
1654 static inline int btrfs_del_item(struct btrfs_trans_handle
*trans
,
1655 struct btrfs_root
*root
,
1656 struct btrfs_path
*path
)
1658 return btrfs_del_items(trans
, root
, path
, path
->slots
[0], 1);
1661 int btrfs_insert_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
1662 *root
, struct btrfs_key
*key
, void *data
, u32 data_size
);
1663 int btrfs_insert_empty_items(struct btrfs_trans_handle
*trans
,
1664 struct btrfs_root
*root
,
1665 struct btrfs_path
*path
,
1666 struct btrfs_key
*cpu_key
, u32
*data_size
, int nr
);
1668 static inline int btrfs_insert_empty_item(struct btrfs_trans_handle
*trans
,
1669 struct btrfs_root
*root
,
1670 struct btrfs_path
*path
,
1671 struct btrfs_key
*key
,
1674 return btrfs_insert_empty_items(trans
, root
, path
, key
, &data_size
, 1);
1677 int btrfs_next_leaf(struct btrfs_root
*root
, struct btrfs_path
*path
);
1678 int btrfs_prev_leaf(struct btrfs_root
*root
, struct btrfs_path
*path
);
1679 int btrfs_leaf_free_space(struct btrfs_root
*root
, struct extent_buffer
*leaf
);
1680 int btrfs_drop_snapshot(struct btrfs_trans_handle
*trans
, struct btrfs_root
1683 int btrfs_del_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1684 struct btrfs_key
*key
);
1685 int btrfs_insert_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
1686 *root
, struct btrfs_key
*key
, struct btrfs_root_item
1688 int btrfs_update_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
1689 *root
, struct btrfs_key
*key
, struct btrfs_root_item
1691 int btrfs_find_last_root(struct btrfs_root
*root
, u64 objectid
, struct
1692 btrfs_root_item
*item
, struct btrfs_key
*key
);
1693 int btrfs_search_root(struct btrfs_root
*root
, u64 search_start
,
1694 u64
*found_objectid
);
1695 int btrfs_find_dead_roots(struct btrfs_root
*root
, u64 objectid
,
1696 struct btrfs_root
*latest_root
);
1698 int btrfs_insert_dir_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
1699 *root
, const char *name
, int name_len
, u64 dir
,
1700 struct btrfs_key
*location
, u8 type
, u64 index
);
1701 struct btrfs_dir_item
*btrfs_lookup_dir_item(struct btrfs_trans_handle
*trans
,
1702 struct btrfs_root
*root
,
1703 struct btrfs_path
*path
, u64 dir
,
1704 const char *name
, int name_len
,
1706 struct btrfs_dir_item
*
1707 btrfs_lookup_dir_index_item(struct btrfs_trans_handle
*trans
,
1708 struct btrfs_root
*root
,
1709 struct btrfs_path
*path
, u64 dir
,
1710 u64 objectid
, const char *name
, int name_len
,
1712 struct btrfs_dir_item
*btrfs_match_dir_item_name(struct btrfs_root
*root
,
1713 struct btrfs_path
*path
,
1714 const char *name
, int name_len
);
1715 int btrfs_delete_one_dir_name(struct btrfs_trans_handle
*trans
,
1716 struct btrfs_root
*root
,
1717 struct btrfs_path
*path
,
1718 struct btrfs_dir_item
*di
);
1719 int btrfs_insert_xattr_item(struct btrfs_trans_handle
*trans
,
1720 struct btrfs_root
*root
, const char *name
,
1721 u16 name_len
, const void *data
, u16 data_len
,
1723 struct btrfs_dir_item
*btrfs_lookup_xattr(struct btrfs_trans_handle
*trans
,
1724 struct btrfs_root
*root
,
1725 struct btrfs_path
*path
, u64 dir
,
1726 const char *name
, u16 name_len
,
1730 int btrfs_insert_orphan_item(struct btrfs_trans_handle
*trans
,
1731 struct btrfs_root
*root
, u64 offset
);
1732 int btrfs_del_orphan_item(struct btrfs_trans_handle
*trans
,
1733 struct btrfs_root
*root
, u64 offset
);
1736 int btrfs_find_free_objectid(struct btrfs_trans_handle
*trans
,
1737 struct btrfs_root
*fs_root
,
1738 u64 dirid
, u64
*objectid
);
1739 int btrfs_find_highest_inode(struct btrfs_root
*fs_root
, u64
*objectid
);
1742 int btrfs_insert_inode_ref(struct btrfs_trans_handle
*trans
,
1743 struct btrfs_root
*root
,
1744 const char *name
, int name_len
,
1745 u64 inode_objectid
, u64 ref_objectid
, u64 index
);
1746 int btrfs_del_inode_ref(struct btrfs_trans_handle
*trans
,
1747 struct btrfs_root
*root
,
1748 const char *name
, int name_len
,
1749 u64 inode_objectid
, u64 ref_objectid
, u64
*index
);
1750 int btrfs_insert_empty_inode(struct btrfs_trans_handle
*trans
,
1751 struct btrfs_root
*root
,
1752 struct btrfs_path
*path
, u64 objectid
);
1753 int btrfs_lookup_inode(struct btrfs_trans_handle
*trans
, struct btrfs_root
1754 *root
, struct btrfs_path
*path
,
1755 struct btrfs_key
*location
, int mod
);
1758 int btrfs_lookup_bio_sums(struct btrfs_root
*root
, struct inode
*inode
,
1760 int btrfs_insert_file_extent(struct btrfs_trans_handle
*trans
,
1761 struct btrfs_root
*root
,
1762 u64 objectid
, u64 pos
, u64 disk_offset
,
1764 u64 num_bytes
, u64 offset
);
1765 int btrfs_lookup_file_extent(struct btrfs_trans_handle
*trans
,
1766 struct btrfs_root
*root
,
1767 struct btrfs_path
*path
, u64 objectid
,
1768 u64 bytenr
, int mod
);
1769 int btrfs_csum_file_blocks(struct btrfs_trans_handle
*trans
,
1770 struct btrfs_root
*root
, struct inode
*inode
,
1771 struct btrfs_ordered_sum
*sums
);
1772 int btrfs_csum_one_bio(struct btrfs_root
*root
, struct inode
*inode
,
1774 struct btrfs_csum_item
*btrfs_lookup_csum(struct btrfs_trans_handle
*trans
,
1775 struct btrfs_root
*root
,
1776 struct btrfs_path
*path
,
1777 u64 objectid
, u64 offset
,
1779 int btrfs_csum_truncate(struct btrfs_trans_handle
*trans
,
1780 struct btrfs_root
*root
, struct btrfs_path
*path
,
1784 /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */
1785 #if defined(ClearPageFsMisc) && !defined(ClearPageChecked)
1786 #define ClearPageChecked ClearPageFsMisc
1787 #define SetPageChecked SetPageFsMisc
1788 #define PageChecked PageFsMisc
1791 int btrfs_unlink_inode(struct btrfs_trans_handle
*trans
,
1792 struct btrfs_root
*root
,
1793 struct inode
*dir
, struct inode
*inode
,
1794 const char *name
, int name_len
);
1795 int btrfs_add_link(struct btrfs_trans_handle
*trans
,
1796 struct inode
*parent_inode
, struct inode
*inode
,
1797 const char *name
, int name_len
, int add_backref
, u64 index
);
1798 int btrfs_truncate_inode_items(struct btrfs_trans_handle
*trans
,
1799 struct btrfs_root
*root
,
1800 struct inode
*inode
, u64 new_size
,
1803 int btrfs_start_delalloc_inodes(struct btrfs_root
*root
);
1804 int btrfs_set_extent_delalloc(struct inode
*inode
, u64 start
, u64 end
);
1805 int btrfs_writepages(struct address_space
*mapping
,
1806 struct writeback_control
*wbc
);
1807 int btrfs_create_subvol_root(struct btrfs_root
*new_root
,
1808 struct btrfs_trans_handle
*trans
, u64 new_dirid
,
1809 struct btrfs_block_group_cache
*block_group
);
1811 void btrfs_invalidate_dcache_root(struct btrfs_root
*root
, char *name
,
1814 int btrfs_merge_bio_hook(struct page
*page
, unsigned long offset
,
1815 size_t size
, struct bio
*bio
);
1817 static inline void dec_i_blocks(struct inode
*inode
, u64 dec
)
1820 if (dec
<= inode
->i_blocks
)
1821 inode
->i_blocks
-= dec
;
1823 inode
->i_blocks
= 0;
1826 unsigned long btrfs_force_ra(struct address_space
*mapping
,
1827 struct file_ra_state
*ra
, struct file
*file
,
1828 pgoff_t offset
, pgoff_t last_index
);
1829 int btrfs_check_free_space(struct btrfs_root
*root
, u64 num_required
,
1831 int btrfs_page_mkwrite(struct vm_area_struct
*vma
, struct page
*page
);
1832 int btrfs_readpage(struct file
*file
, struct page
*page
);
1833 void btrfs_delete_inode(struct inode
*inode
);
1834 void btrfs_put_inode(struct inode
*inode
);
1835 void btrfs_read_locked_inode(struct inode
*inode
);
1836 int btrfs_write_inode(struct inode
*inode
, int wait
);
1837 void btrfs_dirty_inode(struct inode
*inode
);
1838 struct inode
*btrfs_alloc_inode(struct super_block
*sb
);
1839 void btrfs_destroy_inode(struct inode
*inode
);
1840 int btrfs_init_cachep(void);
1841 void btrfs_destroy_cachep(void);
1842 long btrfs_ioctl_trans_end(struct file
*file
);
1843 struct inode
*btrfs_ilookup(struct super_block
*s
, u64 objectid
,
1844 struct btrfs_root
*root
, int wait
);
1845 struct inode
*btrfs_iget_locked(struct super_block
*s
, u64 objectid
,
1846 struct btrfs_root
*root
);
1847 struct inode
*btrfs_iget(struct super_block
*s
, struct btrfs_key
*location
,
1848 struct btrfs_root
*root
, int *is_new
);
1849 int btrfs_commit_write(struct file
*file
, struct page
*page
,
1850 unsigned from
, unsigned to
);
1851 struct extent_map
*btrfs_get_extent(struct inode
*inode
, struct page
*page
,
1852 size_t page_offset
, u64 start
, u64 end
,
1854 int btrfs_update_inode(struct btrfs_trans_handle
*trans
,
1855 struct btrfs_root
*root
,
1856 struct inode
*inode
);
1857 int btrfs_orphan_add(struct btrfs_trans_handle
*trans
, struct inode
*inode
);
1858 int btrfs_orphan_del(struct btrfs_trans_handle
*trans
, struct inode
*inode
);
1859 void btrfs_orphan_cleanup(struct btrfs_root
*root
);
1862 long btrfs_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
);
1865 int btrfs_sync_file(struct file
*file
, struct dentry
*dentry
, int datasync
);
1866 int btrfs_drop_extent_cache(struct inode
*inode
, u64 start
, u64 end
,
1868 int btrfs_check_file(struct btrfs_root
*root
, struct inode
*inode
);
1869 extern struct file_operations btrfs_file_operations
;
1870 int btrfs_drop_extents(struct btrfs_trans_handle
*trans
,
1871 struct btrfs_root
*root
, struct inode
*inode
,
1872 u64 start
, u64 end
, u64 inline_limit
, u64
*hint_block
);
1873 int btrfs_release_file(struct inode
*inode
, struct file
*file
);
1876 int btrfs_defrag_leaves(struct btrfs_trans_handle
*trans
,
1877 struct btrfs_root
*root
, int cache_only
);
1880 int btrfs_init_sysfs(void);
1881 void btrfs_exit_sysfs(void);
1882 int btrfs_sysfs_add_super(struct btrfs_fs_info
*fs
);
1883 int btrfs_sysfs_add_root(struct btrfs_root
*root
);
1884 void btrfs_sysfs_del_root(struct btrfs_root
*root
);
1885 void btrfs_sysfs_del_super(struct btrfs_fs_info
*root
);
1888 ssize_t
btrfs_listxattr(struct dentry
*dentry
, char *buffer
, size_t size
);
1891 u64
btrfs_parse_size(char *str
);
1892 int btrfs_parse_options(struct btrfs_root
*root
, char *options
);
1893 int btrfs_sync_fs(struct super_block
*sb
, int wait
);
1896 int btrfs_check_acl(struct inode
*inode
, int mask
);
1897 int btrfs_init_acl(struct inode
*inode
, struct inode
*dir
);
1898 int btrfs_acl_chmod(struct inode
*inode
);
1900 /* free-space-cache.c */
1901 int btrfs_add_free_space(struct btrfs_block_group_cache
*block_group
,
1902 u64 bytenr
, u64 size
);
1903 int btrfs_remove_free_space(struct btrfs_block_group_cache
*block_group
,
1904 u64 bytenr
, u64 size
);
1905 void btrfs_remove_free_space_cache(struct btrfs_block_group_cache
1907 struct btrfs_free_space
*btrfs_find_free_space(struct btrfs_block_group_cache
1908 *block_group
, u64 offset
,
1910 void btrfs_dump_free_space(struct btrfs_block_group_cache
*block_group
,
1912 u64
btrfs_block_group_free_space(struct btrfs_block_group_cache
*block_group
);