4 #include <linux/radix-tree.h>
7 struct btrfs_trans_handle
;
9 #define BTRFS_MAGIC "_BtRfS_M"
11 #define BTRFS_ROOT_TREE_OBJECTID 1
12 #define BTRFS_EXTENT_TREE_OBJECTID 2
13 #define BTRFS_INODE_MAP_OBJECTID 3
14 #define BTRFS_FS_TREE_OBJECTID 4
17 * we can actually store much bigger names, but lets not confuse the rest
20 #define BTRFS_NAME_LEN 255
23 * the key defines the order in the tree, and so it also defines (optimal)
24 * block layout. objectid corresonds to the inode number. The flags
25 * tells us things about the object, and is a kind of stream selector.
26 * so for a given inode, keys with flags of 1 might refer to the inode
27 * data, flags of 2 may point to file data in the btree and flags == 3
28 * may point to extents.
30 * offset is the starting byte offset for this key in the stream.
32 * btrfs_disk_key is in disk byte order. struct btrfs_key is always
33 * in cpu native order. Otherwise they are identical and their sizes
34 * should be the same (ie both packed)
36 struct btrfs_disk_key
{
40 } __attribute__ ((__packed__
));
46 } __attribute__ ((__packed__
));
49 * every tree block (leaf or node) starts with this header.
52 u8 fsid
[16]; /* FS specific uuid */
53 __le64 blocknr
; /* which block this node is supposed to live in */
54 __le64 parentid
; /* objectid of the tree root */
59 /* generation flags to be added */
60 } __attribute__ ((__packed__
));
62 #define BTRFS_MAX_LEVEL 8
63 #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->blocksize - \
64 sizeof(struct btrfs_header)) / \
65 (sizeof(struct btrfs_disk_key) + sizeof(u64)))
66 #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header))
67 #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->blocksize))
71 * the super block basically lists the main trees of the FS
72 * it currently lacks any block count etc etc
74 struct btrfs_super_block
{
75 u8 fsid
[16]; /* FS specific uuid */
76 __le64 blocknr
; /* this block number */
84 __le64 root_dir_objectid
;
85 } __attribute__ ((__packed__
));
88 * A leaf is full of items. offset and size tell us where to find
89 * the item in the leaf (relative to the start of the data area)
92 struct btrfs_disk_key key
;
95 } __attribute__ ((__packed__
));
98 * leaves have an item area and a data area:
99 * [item0, item1....itemN] [free space] [dataN...data1, data0]
101 * The data is separate from the items to get the keys closer together
105 struct btrfs_header header
;
106 struct btrfs_item items
[];
107 } __attribute__ ((__packed__
));
110 * all non-leaf blocks are nodes, they hold only keys and pointers to
113 struct btrfs_key_ptr
{
114 struct btrfs_disk_key key
;
116 } __attribute__ ((__packed__
));
119 struct btrfs_header header
;
120 struct btrfs_key_ptr ptrs
[];
121 } __attribute__ ((__packed__
));
124 * btrfs_paths remember the path taken from the root down to the leaf.
125 * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point
126 * to any other levels that are present.
128 * The slots array records the index of the item or block pointer
129 * used while walking the tree.
132 struct buffer_head
*nodes
[BTRFS_MAX_LEVEL
];
133 int slots
[BTRFS_MAX_LEVEL
];
137 * items in the extent btree are used to record the objectid of the
138 * owner of the block and the number of references
140 struct btrfs_extent_item
{
143 } __attribute__ ((__packed__
));
145 struct btrfs_inode_timespec
{
148 } __attribute__ ((__packed__
));
151 * there is no padding here on purpose. If you want to extent the inode,
152 * make a new item type
154 struct btrfs_inode_item
{
165 struct btrfs_inode_timespec atime
;
166 struct btrfs_inode_timespec ctime
;
167 struct btrfs_inode_timespec mtime
;
168 struct btrfs_inode_timespec otime
;
169 } __attribute__ ((__packed__
));
171 /* inline data is just a blob of bytes */
172 struct btrfs_inline_data_item
{
174 } __attribute__ ((__packed__
));
176 struct btrfs_dir_item
{
181 } __attribute__ ((__packed__
));
183 struct btrfs_root_item
{
189 } __attribute__ ((__packed__
));
191 struct btrfs_file_extent_item
{
193 * disk space consumed by the extent, checksum blocks are included
197 __le64 disk_num_blocks
;
199 * the logical offset in file bytes (no csums)
200 * this extent record is for. This allows a file extent to point
201 * into the middle of an existing extent on disk, sharing it
202 * between two snapshots (useful if some bytes in the middle of the
203 * extent have changed
207 * the logical number of file blocks (no csums included)
210 } __attribute__ ((__packed__
));
212 struct btrfs_inode_map_item
{
213 struct btrfs_disk_key key
;
214 } __attribute__ ((__packed__
));
216 struct btrfs_fs_info
{
217 struct btrfs_root
*fs_root
;
218 struct btrfs_root
*extent_root
;
219 struct btrfs_root
*tree_root
;
220 struct btrfs_root
*inode_root
;
221 struct btrfs_key current_insert
;
222 struct btrfs_key last_insert
;
223 struct radix_tree_root pinned_radix
;
224 u64 last_inode_alloc
;
225 u64 last_inode_alloc_dirid
;
227 struct btrfs_trans_handle
*running_transaction
;
228 struct btrfs_super_block
*disk_super
;
229 struct buffer_head
*sb_buffer
;
230 struct super_block
*sb
;
234 * in ram representation of the tree. extent_root is used for all allocations
235 * and for the extent tree extent_root root. current_insert is used
236 * only for the extent tree.
239 struct buffer_head
*node
;
240 struct buffer_head
*commit_root
;
241 struct btrfs_root_item root_item
;
242 struct btrfs_key root_key
;
243 struct btrfs_fs_info
*fs_info
;
249 /* the lower bits in the key flags defines the item type */
250 #define BTRFS_KEY_TYPE_MAX 256
251 #define BTRFS_KEY_TYPE_MASK (BTRFS_KEY_TYPE_MAX - 1)
254 * inode items have the data typically returned from stat and store other
255 * info about object characteristics. There is one for every file and dir in
258 #define BTRFS_INODE_ITEM_KEY 1
261 * dir items are the name -> inode pointers in a directory. There is one
262 * for every name in a directory.
264 #define BTRFS_DIR_ITEM_KEY 2
266 * inline data is file data that fits in the btree.
268 #define BTRFS_INLINE_DATA_KEY 3
270 * extent data is for data that can't fit in the btree. It points to
271 * a (hopefully) huge chunk of disk
273 #define BTRFS_EXTENT_DATA_KEY 4
275 * root items point to tree roots. There are typically in the root
276 * tree used by the super block to find all the other trees
278 #define BTRFS_ROOT_ITEM_KEY 5
280 * extent items are in the extent map tree. These record which blocks
281 * are used, and how many references there are to each block
283 #define BTRFS_EXTENT_ITEM_KEY 6
286 * the inode map records which inode numbers are in use and where
287 * they actually live on disk
289 #define BTRFS_INODE_MAP_ITEM_KEY 7
291 * string items are for debugging. They just store a short string of
294 #define BTRFS_STRING_ITEM_KEY 8
296 static inline u64
btrfs_inode_generation(struct btrfs_inode_item
*i
)
298 return le64_to_cpu(i
->generation
);
301 static inline void btrfs_set_inode_generation(struct btrfs_inode_item
*i
,
304 i
->generation
= cpu_to_le64(val
);
307 static inline u64
btrfs_inode_size(struct btrfs_inode_item
*i
)
309 return le64_to_cpu(i
->size
);
312 static inline void btrfs_set_inode_size(struct btrfs_inode_item
*i
, u64 val
)
314 i
->size
= cpu_to_le64(val
);
317 static inline u64
btrfs_inode_nblocks(struct btrfs_inode_item
*i
)
319 return le64_to_cpu(i
->nblocks
);
322 static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item
*i
, u64 val
)
324 i
->nblocks
= cpu_to_le64(val
);
327 static inline u32
btrfs_inode_nlink(struct btrfs_inode_item
*i
)
329 return le32_to_cpu(i
->nlink
);
332 static inline void btrfs_set_inode_nlink(struct btrfs_inode_item
*i
, u32 val
)
334 i
->nlink
= cpu_to_le32(val
);
337 static inline u32
btrfs_inode_uid(struct btrfs_inode_item
*i
)
339 return le32_to_cpu(i
->uid
);
342 static inline void btrfs_set_inode_uid(struct btrfs_inode_item
*i
, u32 val
)
344 i
->uid
= cpu_to_le32(val
);
347 static inline u32
btrfs_inode_gid(struct btrfs_inode_item
*i
)
349 return le32_to_cpu(i
->gid
);
352 static inline void btrfs_set_inode_gid(struct btrfs_inode_item
*i
, u32 val
)
354 i
->gid
= cpu_to_le32(val
);
357 static inline u32
btrfs_inode_mode(struct btrfs_inode_item
*i
)
359 return le32_to_cpu(i
->mode
);
362 static inline void btrfs_set_inode_mode(struct btrfs_inode_item
*i
, u32 val
)
364 i
->mode
= cpu_to_le32(val
);
367 static inline u32
btrfs_inode_rdev(struct btrfs_inode_item
*i
)
369 return le32_to_cpu(i
->rdev
);
372 static inline void btrfs_set_inode_rdev(struct btrfs_inode_item
*i
, u32 val
)
374 i
->rdev
= cpu_to_le32(val
);
377 static inline u16
btrfs_inode_flags(struct btrfs_inode_item
*i
)
379 return le16_to_cpu(i
->flags
);
382 static inline void btrfs_set_inode_flags(struct btrfs_inode_item
*i
, u16 val
)
384 i
->flags
= cpu_to_le16(val
);
387 static inline u16
btrfs_inode_compat_flags(struct btrfs_inode_item
*i
)
389 return le16_to_cpu(i
->compat_flags
);
392 static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item
*i
,
395 i
->compat_flags
= cpu_to_le16(val
);
398 static inline u32
btrfs_timespec_sec(struct btrfs_inode_timespec
*ts
)
400 return le32_to_cpu(ts
->sec
);
403 static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec
*ts
,
406 ts
->sec
= cpu_to_le32(val
);
409 static inline u32
btrfs_timespec_nsec(struct btrfs_inode_timespec
*ts
)
411 return le32_to_cpu(ts
->nsec
);
414 static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec
*ts
,
417 ts
->nsec
= cpu_to_le32(val
);
422 static inline u64
btrfs_extent_owner(struct btrfs_extent_item
*ei
)
424 return le64_to_cpu(ei
->owner
);
427 static inline void btrfs_set_extent_owner(struct btrfs_extent_item
*ei
, u64 val
)
429 ei
->owner
= cpu_to_le64(val
);
432 static inline u32
btrfs_extent_refs(struct btrfs_extent_item
*ei
)
434 return le32_to_cpu(ei
->refs
);
437 static inline void btrfs_set_extent_refs(struct btrfs_extent_item
*ei
, u32 val
)
439 ei
->refs
= cpu_to_le32(val
);
442 static inline u64
btrfs_node_blockptr(struct btrfs_node
*n
, int nr
)
444 return le64_to_cpu(n
->ptrs
[nr
].blockptr
);
447 static inline void btrfs_set_node_blockptr(struct btrfs_node
*n
, int nr
,
450 n
->ptrs
[nr
].blockptr
= cpu_to_le64(val
);
453 static inline u32
btrfs_item_offset(struct btrfs_item
*item
)
455 return le32_to_cpu(item
->offset
);
458 static inline void btrfs_set_item_offset(struct btrfs_item
*item
, u32 val
)
460 item
->offset
= cpu_to_le32(val
);
463 static inline u32
btrfs_item_end(struct btrfs_item
*item
)
465 return le32_to_cpu(item
->offset
) + le16_to_cpu(item
->size
);
468 static inline u16
btrfs_item_size(struct btrfs_item
*item
)
470 return le16_to_cpu(item
->size
);
473 static inline void btrfs_set_item_size(struct btrfs_item
*item
, u16 val
)
475 item
->size
= cpu_to_le16(val
);
478 static inline u64
btrfs_dir_objectid(struct btrfs_dir_item
*d
)
480 return le64_to_cpu(d
->objectid
);
483 static inline void btrfs_set_dir_objectid(struct btrfs_dir_item
*d
, u64 val
)
485 d
->objectid
= cpu_to_le64(val
);
488 static inline u16
btrfs_dir_flags(struct btrfs_dir_item
*d
)
490 return le16_to_cpu(d
->flags
);
493 static inline void btrfs_set_dir_flags(struct btrfs_dir_item
*d
, u16 val
)
495 d
->flags
= cpu_to_le16(val
);
498 static inline u8
btrfs_dir_type(struct btrfs_dir_item
*d
)
503 static inline void btrfs_set_dir_type(struct btrfs_dir_item
*d
, u8 val
)
508 static inline u16
btrfs_dir_name_len(struct btrfs_dir_item
*d
)
510 return le16_to_cpu(d
->name_len
);
513 static inline void btrfs_set_dir_name_len(struct btrfs_dir_item
*d
, u16 val
)
515 d
->name_len
= cpu_to_le16(val
);
518 static inline void btrfs_disk_key_to_cpu(struct btrfs_key
*cpu
,
519 struct btrfs_disk_key
*disk
)
521 cpu
->offset
= le64_to_cpu(disk
->offset
);
522 cpu
->flags
= le32_to_cpu(disk
->flags
);
523 cpu
->objectid
= le64_to_cpu(disk
->objectid
);
526 static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key
*disk
,
527 struct btrfs_key
*cpu
)
529 disk
->offset
= cpu_to_le64(cpu
->offset
);
530 disk
->flags
= cpu_to_le32(cpu
->flags
);
531 disk
->objectid
= cpu_to_le64(cpu
->objectid
);
534 static inline u64
btrfs_disk_key_objectid(struct btrfs_disk_key
*disk
)
536 return le64_to_cpu(disk
->objectid
);
539 static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key
*disk
,
542 disk
->objectid
= cpu_to_le64(val
);
545 static inline u64
btrfs_disk_key_offset(struct btrfs_disk_key
*disk
)
547 return le64_to_cpu(disk
->offset
);
550 static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key
*disk
,
553 disk
->offset
= cpu_to_le64(val
);
556 static inline u32
btrfs_disk_key_flags(struct btrfs_disk_key
*disk
)
558 return le32_to_cpu(disk
->flags
);
561 static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key
*disk
,
564 disk
->flags
= cpu_to_le32(val
);
567 static inline u32
btrfs_key_type(struct btrfs_key
*key
)
569 return key
->flags
& BTRFS_KEY_TYPE_MASK
;
572 static inline u32
btrfs_disk_key_type(struct btrfs_disk_key
*key
)
574 return le32_to_cpu(key
->flags
) & BTRFS_KEY_TYPE_MASK
;
577 static inline void btrfs_set_key_type(struct btrfs_key
*key
, u32 type
)
579 BUG_ON(type
>= BTRFS_KEY_TYPE_MAX
);
580 key
->flags
= (key
->flags
& ~((u64
)BTRFS_KEY_TYPE_MASK
)) | type
;
583 static inline void btrfs_set_disk_key_type(struct btrfs_disk_key
*key
, u32 type
)
585 u32 flags
= btrfs_disk_key_flags(key
);
586 BUG_ON(type
>= BTRFS_KEY_TYPE_MAX
);
587 flags
= (flags
& ~((u64
)BTRFS_KEY_TYPE_MASK
)) | type
;
588 btrfs_set_disk_key_flags(key
, flags
);
591 static inline u64
btrfs_header_blocknr(struct btrfs_header
*h
)
593 return le64_to_cpu(h
->blocknr
);
596 static inline void btrfs_set_header_blocknr(struct btrfs_header
*h
, u64 blocknr
)
598 h
->blocknr
= cpu_to_le64(blocknr
);
601 static inline u64
btrfs_header_parentid(struct btrfs_header
*h
)
603 return le64_to_cpu(h
->parentid
);
606 static inline void btrfs_set_header_parentid(struct btrfs_header
*h
,
609 h
->parentid
= cpu_to_le64(parentid
);
612 static inline u16
btrfs_header_nritems(struct btrfs_header
*h
)
614 return le16_to_cpu(h
->nritems
);
617 static inline void btrfs_set_header_nritems(struct btrfs_header
*h
, u16 val
)
619 h
->nritems
= cpu_to_le16(val
);
622 static inline u16
btrfs_header_flags(struct btrfs_header
*h
)
624 return le16_to_cpu(h
->flags
);
627 static inline void btrfs_set_header_flags(struct btrfs_header
*h
, u16 val
)
629 h
->flags
= cpu_to_le16(val
);
632 static inline int btrfs_header_level(struct btrfs_header
*h
)
634 return btrfs_header_flags(h
) & (BTRFS_MAX_LEVEL
- 1);
637 static inline void btrfs_set_header_level(struct btrfs_header
*h
, int level
)
640 BUG_ON(level
> BTRFS_MAX_LEVEL
);
641 flags
= btrfs_header_flags(h
) & ~(BTRFS_MAX_LEVEL
- 1);
642 btrfs_set_header_flags(h
, flags
| level
);
645 static inline int btrfs_is_leaf(struct btrfs_node
*n
)
647 return (btrfs_header_level(&n
->header
) == 0);
650 static inline u64
btrfs_root_blocknr(struct btrfs_root_item
*item
)
652 return le64_to_cpu(item
->blocknr
);
655 static inline void btrfs_set_root_blocknr(struct btrfs_root_item
*item
, u64 val
)
657 item
->blocknr
= cpu_to_le64(val
);
660 static inline u32
btrfs_root_refs(struct btrfs_root_item
*item
)
662 return le32_to_cpu(item
->refs
);
665 static inline void btrfs_set_root_refs(struct btrfs_root_item
*item
, u32 val
)
667 item
->refs
= cpu_to_le32(val
);
670 static inline u64
btrfs_super_blocknr(struct btrfs_super_block
*s
)
672 return le64_to_cpu(s
->blocknr
);
675 static inline void btrfs_set_super_blocknr(struct btrfs_super_block
*s
, u64 val
)
677 s
->blocknr
= cpu_to_le64(val
);
680 static inline u64
btrfs_super_root(struct btrfs_super_block
*s
)
682 return le64_to_cpu(s
->root
);
685 static inline void btrfs_set_super_root(struct btrfs_super_block
*s
, u64 val
)
687 s
->root
= cpu_to_le64(val
);
690 static inline u64
btrfs_super_total_blocks(struct btrfs_super_block
*s
)
692 return le64_to_cpu(s
->total_blocks
);
695 static inline void btrfs_set_super_total_blocks(struct btrfs_super_block
*s
,
698 s
->total_blocks
= cpu_to_le64(val
);
701 static inline u64
btrfs_super_blocks_used(struct btrfs_super_block
*s
)
703 return le64_to_cpu(s
->blocks_used
);
706 static inline void btrfs_set_super_blocks_used(struct btrfs_super_block
*s
,
709 s
->blocks_used
= cpu_to_le64(val
);
712 static inline u32
btrfs_super_blocksize(struct btrfs_super_block
*s
)
714 return le32_to_cpu(s
->blocksize
);
717 static inline void btrfs_set_super_blocksize(struct btrfs_super_block
*s
,
720 s
->blocksize
= cpu_to_le32(val
);
723 static inline u64
btrfs_super_root_dir(struct btrfs_super_block
*s
)
725 return le64_to_cpu(s
->root_dir_objectid
);
728 static inline void btrfs_set_super_root_dir(struct btrfs_super_block
*s
, u64
731 s
->root_dir_objectid
= cpu_to_le64(val
);
734 static inline u8
*btrfs_leaf_data(struct btrfs_leaf
*l
)
736 return (u8
*)l
->items
;
739 static inline u64
btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item
742 return le64_to_cpu(e
->disk_blocknr
);
745 static inline void btrfs_set_file_extent_disk_blocknr(struct
746 btrfs_file_extent_item
749 e
->disk_blocknr
= cpu_to_le64(val
);
752 static inline u64
btrfs_file_extent_disk_num_blocks(struct
753 btrfs_file_extent_item
*e
)
755 return le64_to_cpu(e
->disk_num_blocks
);
758 static inline void btrfs_set_file_extent_disk_num_blocks(struct
759 btrfs_file_extent_item
762 e
->disk_num_blocks
= cpu_to_le64(val
);
765 static inline u64
btrfs_file_extent_offset(struct btrfs_file_extent_item
*e
)
767 return le64_to_cpu(e
->offset
);
770 static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item
773 e
->offset
= cpu_to_le64(val
);
776 static inline u64
btrfs_file_extent_num_blocks(struct btrfs_file_extent_item
779 return le64_to_cpu(e
->num_blocks
);
782 static inline void btrfs_set_file_extent_num_blocks(struct
783 btrfs_file_extent_item
*e
,
786 e
->num_blocks
= cpu_to_le64(val
);
789 static inline struct btrfs_root
*btrfs_sb(struct super_block
*sb
)
791 return sb
->s_fs_info
;
794 /* helper function to cast into the data area of the leaf. */
795 #define btrfs_item_ptr(leaf, slot, type) \
796 ((type *)(btrfs_leaf_data(leaf) + \
797 btrfs_item_offset((leaf)->items + (slot))))
799 struct buffer_head
*btrfs_alloc_free_block(struct btrfs_trans_handle
*trans
,
800 struct btrfs_root
*root
);
801 int btrfs_inc_ref(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
802 struct buffer_head
*buf
);
803 int btrfs_free_extent(struct btrfs_trans_handle
*trans
, struct btrfs_root
804 *root
, u64 blocknr
, u64 num_blocks
, int pin
);
805 int btrfs_search_slot(struct btrfs_trans_handle
*trans
, struct btrfs_root
806 *root
, struct btrfs_key
*key
, struct btrfs_path
*p
, int
808 void btrfs_release_path(struct btrfs_root
*root
, struct btrfs_path
*p
);
809 void btrfs_init_path(struct btrfs_path
*p
);
810 int btrfs_del_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
811 struct btrfs_path
*path
);
812 int btrfs_insert_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
813 *root
, struct btrfs_key
*key
, void *data
, u32 data_size
);
814 int btrfs_insert_empty_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
815 *root
, struct btrfs_path
*path
, struct btrfs_key
816 *cpu_key
, u32 data_size
);
817 int btrfs_next_leaf(struct btrfs_root
*root
, struct btrfs_path
*path
);
818 int btrfs_leaf_free_space(struct btrfs_root
*root
, struct btrfs_leaf
*leaf
);
819 int btrfs_drop_snapshot(struct btrfs_trans_handle
*trans
, struct btrfs_root
820 *root
, struct buffer_head
*snap
);
821 int btrfs_finish_extent_commit(struct btrfs_trans_handle
*trans
, struct
823 int btrfs_del_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
824 struct btrfs_key
*key
);
825 int btrfs_insert_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
826 *root
, struct btrfs_key
*key
, struct btrfs_root_item
828 int btrfs_update_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
829 *root
, struct btrfs_key
*key
, struct btrfs_root_item
831 int btrfs_find_last_root(struct btrfs_root
*root
, u64 objectid
, struct
832 btrfs_root_item
*item
, struct btrfs_key
*key
);
833 int btrfs_insert_dir_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
834 *root
, char *name
, int name_len
, u64 dir
, u64
836 int btrfs_lookup_dir_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
837 *root
, struct btrfs_path
*path
, u64 dir
,
838 const char *name
, int name_len
, int mod
);
839 int btrfs_match_dir_item_name(struct btrfs_root
*root
, struct btrfs_path
*path
,
840 char *name
, int name_len
);
841 int btrfs_find_free_objectid(struct btrfs_trans_handle
*trans
,
842 struct btrfs_root
*fs_root
,
843 u64 dirid
, u64
*objectid
);
844 int btrfs_insert_inode_map(struct btrfs_trans_handle
*trans
,
845 struct btrfs_root
*root
,
846 u64 objectid
, struct btrfs_key
*location
);
847 int btrfs_lookup_inode_map(struct btrfs_trans_handle
*trans
,
848 struct btrfs_root
*root
, struct btrfs_path
*path
,
849 u64 objectid
, int mod
);
850 int btrfs_insert_inode(struct btrfs_trans_handle
*trans
, struct btrfs_root
851 *root
, u64 objectid
, struct btrfs_inode_item
853 int btrfs_lookup_inode(struct btrfs_trans_handle
*trans
, struct btrfs_root
854 *root
, struct btrfs_path
*path
, u64 objectid
, int mod
);