5 #include "kerncompat.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
15 #define BTRFS_FIRST_FREE_OBJECTID 5
18 * the key defines the order in the tree, and so it also defines (optimal)
19 * block layout. objectid corresonds to the inode number. The flags
20 * tells us things about the object, and is a kind of stream selector.
21 * so for a given inode, keys with flags of 1 might refer to the inode
22 * data, flags of 2 may point to file data in the btree and flags == 3
23 * may point to extents.
25 * offset is the starting byte offset for this key in the stream.
27 * btrfs_disk_key is in disk byte order. struct btrfs_key is always
28 * in cpu native order. Otherwise they are identical and their sizes
29 * should be the same (ie both packed)
31 struct btrfs_disk_key
{
35 } __attribute__ ((__packed__
));
41 } __attribute__ ((__packed__
));
44 * every tree block (leaf or node) starts with this header.
47 u8 fsid
[16]; /* FS specific uuid */
48 __le64 blocknr
; /* which block this node is supposed to live in */
50 __le64 parentid
; /* objectid of the tree root */
56 } __attribute__ ((__packed__
));
58 #define BTRFS_MAX_LEVEL 8
59 #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->blocksize - \
60 sizeof(struct btrfs_header)) / \
61 (sizeof(struct btrfs_disk_key) + sizeof(u64)))
62 #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header))
63 #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->blocksize))
67 * the super block basically lists the main trees of the FS
68 * it currently lacks any block count etc etc
70 struct btrfs_super_block
{
71 u8 fsid
[16]; /* FS specific uuid */
72 __le64 blocknr
; /* this block number */
80 __le64 root_dir_objectid
;
81 } __attribute__ ((__packed__
));
84 * A leaf is full of items. offset and size tell us where to find
85 * the item in the leaf (relative to the start of the data area)
88 struct btrfs_disk_key key
;
91 } __attribute__ ((__packed__
));
94 * leaves have an item area and a data area:
95 * [item0, item1....itemN] [free space] [dataN...data1, data0]
97 * The data is separate from the items to get the keys closer together
101 struct btrfs_header header
;
102 struct btrfs_item items
[];
103 } __attribute__ ((__packed__
));
106 * all non-leaf blocks are nodes, they hold only keys and pointers to
109 struct btrfs_key_ptr
{
110 struct btrfs_disk_key key
;
112 } __attribute__ ((__packed__
));
115 struct btrfs_header header
;
116 struct btrfs_key_ptr ptrs
[];
117 } __attribute__ ((__packed__
));
120 * btrfs_paths remember the path taken from the root down to the leaf.
121 * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point
122 * to any other levels that are present.
124 * The slots array records the index of the item or block pointer
125 * used while walking the tree.
128 struct btrfs_buffer
*nodes
[BTRFS_MAX_LEVEL
];
129 int slots
[BTRFS_MAX_LEVEL
];
133 * items in the extent btree are used to record the objectid of the
134 * owner of the block and the number of references
136 struct btrfs_extent_item
{
139 } __attribute__ ((__packed__
));
141 struct btrfs_inode_timespec
{
144 } __attribute__ ((__packed__
));
147 * there is no padding here on purpose. If you want to extent the inode,
148 * make a new item type
150 struct btrfs_inode_item
{
161 struct btrfs_inode_timespec atime
;
162 struct btrfs_inode_timespec ctime
;
163 struct btrfs_inode_timespec mtime
;
164 struct btrfs_inode_timespec otime
;
165 } __attribute__ ((__packed__
));
167 /* inline data is just a blob of bytes */
168 struct btrfs_inline_data_item
{
170 } __attribute__ ((__packed__
));
172 struct btrfs_dir_item
{
177 } __attribute__ ((__packed__
));
179 struct btrfs_root_item
{
185 } __attribute__ ((__packed__
));
187 struct btrfs_file_extent_item
{
190 * disk space consumed by the extent, checksum blocks are included
194 __le64 disk_num_blocks
;
196 * the logical offset in file blocks (no csums)
197 * this extent record is for. This allows a file extent to point
198 * into the middle of an existing extent on disk, sharing it
199 * between two snapshots (useful if some bytes in the middle of the
200 * extent have changed
204 * the logical number of file blocks (no csums included)
207 } __attribute__ ((__packed__
));
209 struct btrfs_inode_map_item
{
210 struct btrfs_disk_key key
;
211 } __attribute__ ((__packed__
));
213 struct btrfs_fs_info
{
214 struct btrfs_root
*fs_root
;
215 struct btrfs_root
*extent_root
;
216 struct btrfs_root
*tree_root
;
217 struct btrfs_root
*inode_root
;
218 struct btrfs_key current_insert
;
219 struct btrfs_key last_insert
;
220 struct radix_tree_root cache_radix
;
221 struct radix_tree_root pinned_radix
;
222 struct list_head trans
;
223 struct list_head cache
;
224 u64 last_inode_alloc
;
225 u64 last_inode_alloc_dirid
;
229 struct btrfs_trans_handle
*running_transaction
;
230 struct btrfs_super_block
*disk_super
;
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 btrfs_buffer
*node
;
240 struct btrfs_buffer
*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
);
399 static inline u64
btrfs_extent_owner(struct btrfs_extent_item
*ei
)
401 return le64_to_cpu(ei
->owner
);
404 static inline void btrfs_set_extent_owner(struct btrfs_extent_item
*ei
, u64 val
)
406 ei
->owner
= cpu_to_le64(val
);
409 static inline u32
btrfs_extent_refs(struct btrfs_extent_item
*ei
)
411 return le32_to_cpu(ei
->refs
);
414 static inline void btrfs_set_extent_refs(struct btrfs_extent_item
*ei
, u32 val
)
416 ei
->refs
= cpu_to_le32(val
);
419 static inline u64
btrfs_node_blockptr(struct btrfs_node
*n
, int nr
)
421 return le64_to_cpu(n
->ptrs
[nr
].blockptr
);
424 static inline void btrfs_set_node_blockptr(struct btrfs_node
*n
, int nr
,
427 n
->ptrs
[nr
].blockptr
= cpu_to_le64(val
);
430 static inline u32
btrfs_item_offset(struct btrfs_item
*item
)
432 return le32_to_cpu(item
->offset
);
435 static inline void btrfs_set_item_offset(struct btrfs_item
*item
, u32 val
)
437 item
->offset
= cpu_to_le32(val
);
440 static inline u32
btrfs_item_end(struct btrfs_item
*item
)
442 return le32_to_cpu(item
->offset
) + le16_to_cpu(item
->size
);
445 static inline u16
btrfs_item_size(struct btrfs_item
*item
)
447 return le16_to_cpu(item
->size
);
450 static inline void btrfs_set_item_size(struct btrfs_item
*item
, u16 val
)
452 item
->size
= cpu_to_le16(val
);
455 static inline u64
btrfs_dir_objectid(struct btrfs_dir_item
*d
)
457 return le64_to_cpu(d
->objectid
);
460 static inline void btrfs_set_dir_objectid(struct btrfs_dir_item
*d
, u64 val
)
462 d
->objectid
= cpu_to_le64(val
);
465 static inline u16
btrfs_dir_flags(struct btrfs_dir_item
*d
)
467 return le16_to_cpu(d
->flags
);
470 static inline void btrfs_set_dir_flags(struct btrfs_dir_item
*d
, u16 val
)
472 d
->flags
= cpu_to_le16(val
);
475 static inline u8
btrfs_dir_type(struct btrfs_dir_item
*d
)
480 static inline void btrfs_set_dir_type(struct btrfs_dir_item
*d
, u8 val
)
485 static inline u16
btrfs_dir_name_len(struct btrfs_dir_item
*d
)
487 return le16_to_cpu(d
->name_len
);
490 static inline void btrfs_set_dir_name_len(struct btrfs_dir_item
*d
, u16 val
)
492 d
->name_len
= cpu_to_le16(val
);
495 static inline void btrfs_disk_key_to_cpu(struct btrfs_key
*cpu
,
496 struct btrfs_disk_key
*disk
)
498 cpu
->offset
= le64_to_cpu(disk
->offset
);
499 cpu
->flags
= le32_to_cpu(disk
->flags
);
500 cpu
->objectid
= le64_to_cpu(disk
->objectid
);
503 static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key
*disk
,
504 struct btrfs_key
*cpu
)
506 disk
->offset
= cpu_to_le64(cpu
->offset
);
507 disk
->flags
= cpu_to_le32(cpu
->flags
);
508 disk
->objectid
= cpu_to_le64(cpu
->objectid
);
511 static inline u64
btrfs_disk_key_objectid(struct btrfs_disk_key
*disk
)
513 return le64_to_cpu(disk
->objectid
);
516 static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key
*disk
,
519 disk
->objectid
= cpu_to_le64(val
);
522 static inline u64
btrfs_disk_key_offset(struct btrfs_disk_key
*disk
)
524 return le64_to_cpu(disk
->offset
);
527 static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key
*disk
,
530 disk
->offset
= cpu_to_le64(val
);
533 static inline u32
btrfs_disk_key_flags(struct btrfs_disk_key
*disk
)
535 return le32_to_cpu(disk
->flags
);
538 static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key
*disk
,
541 disk
->flags
= cpu_to_le32(val
);
544 static inline u32
btrfs_key_type(struct btrfs_key
*key
)
546 return key
->flags
& BTRFS_KEY_TYPE_MASK
;
549 static inline u32
btrfs_disk_key_type(struct btrfs_disk_key
*key
)
551 return le32_to_cpu(key
->flags
) & BTRFS_KEY_TYPE_MASK
;
554 static inline void btrfs_set_key_type(struct btrfs_key
*key
, u32 type
)
556 BUG_ON(type
>= BTRFS_KEY_TYPE_MAX
);
557 key
->flags
= (key
->flags
& ~((u64
)BTRFS_KEY_TYPE_MASK
)) | type
;
560 static inline void btrfs_set_disk_key_type(struct btrfs_disk_key
*key
, u32 type
)
562 u32 flags
= btrfs_disk_key_flags(key
);
563 BUG_ON(type
>= BTRFS_KEY_TYPE_MAX
);
564 flags
= (flags
& ~((u64
)BTRFS_KEY_TYPE_MASK
)) | type
;
565 btrfs_set_disk_key_flags(key
, flags
);
568 static inline u64
btrfs_header_blocknr(struct btrfs_header
*h
)
570 return le64_to_cpu(h
->blocknr
);
573 static inline void btrfs_set_header_blocknr(struct btrfs_header
*h
, u64 blocknr
)
575 h
->blocknr
= cpu_to_le64(blocknr
);
578 static inline u64
btrfs_header_generation(struct btrfs_header
*h
)
580 return le64_to_cpu(h
->generation
);
583 static inline void btrfs_set_header_generation(struct btrfs_header
*h
,
586 h
->generation
= cpu_to_le64(val
);
589 static inline u64
btrfs_header_parentid(struct btrfs_header
*h
)
591 return le64_to_cpu(h
->parentid
);
594 static inline void btrfs_set_header_parentid(struct btrfs_header
*h
,
597 h
->parentid
= cpu_to_le64(parentid
);
600 static inline u16
btrfs_header_nritems(struct btrfs_header
*h
)
602 return le16_to_cpu(h
->nritems
);
605 static inline void btrfs_set_header_nritems(struct btrfs_header
*h
, u16 val
)
607 h
->nritems
= cpu_to_le16(val
);
610 static inline u16
btrfs_header_flags(struct btrfs_header
*h
)
612 return le16_to_cpu(h
->flags
);
615 static inline void btrfs_set_header_flags(struct btrfs_header
*h
, u16 val
)
617 h
->flags
= cpu_to_le16(val
);
620 static inline int btrfs_header_level(struct btrfs_header
*h
)
625 static inline void btrfs_set_header_level(struct btrfs_header
*h
, int level
)
627 BUG_ON(level
> BTRFS_MAX_LEVEL
);
631 static inline int btrfs_is_leaf(struct btrfs_node
*n
)
633 return (btrfs_header_level(&n
->header
) == 0);
636 static inline u64
btrfs_root_blocknr(struct btrfs_root_item
*item
)
638 return le64_to_cpu(item
->blocknr
);
641 static inline void btrfs_set_root_blocknr(struct btrfs_root_item
*item
, u64 val
)
643 item
->blocknr
= cpu_to_le64(val
);
646 static inline u32
btrfs_root_refs(struct btrfs_root_item
*item
)
648 return le32_to_cpu(item
->refs
);
651 static inline void btrfs_set_root_refs(struct btrfs_root_item
*item
, u32 val
)
653 item
->refs
= cpu_to_le32(val
);
656 static inline u64
btrfs_super_blocknr(struct btrfs_super_block
*s
)
658 return le64_to_cpu(s
->blocknr
);
661 static inline void btrfs_set_super_blocknr(struct btrfs_super_block
*s
, u64 val
)
663 s
->blocknr
= cpu_to_le64(val
);
666 static inline u64
btrfs_super_root(struct btrfs_super_block
*s
)
668 return le64_to_cpu(s
->root
);
671 static inline void btrfs_set_super_root(struct btrfs_super_block
*s
, u64 val
)
673 s
->root
= cpu_to_le64(val
);
676 static inline u64
btrfs_super_total_blocks(struct btrfs_super_block
*s
)
678 return le64_to_cpu(s
->total_blocks
);
681 static inline void btrfs_set_super_total_blocks(struct btrfs_super_block
*s
,
684 s
->total_blocks
= cpu_to_le64(val
);
687 static inline u64
btrfs_super_blocks_used(struct btrfs_super_block
*s
)
689 return le64_to_cpu(s
->blocks_used
);
692 static inline void btrfs_set_super_blocks_used(struct btrfs_super_block
*s
,
695 s
->blocks_used
= cpu_to_le64(val
);
698 static inline u32
btrfs_super_blocksize(struct btrfs_super_block
*s
)
700 return le32_to_cpu(s
->blocksize
);
703 static inline void btrfs_set_super_blocksize(struct btrfs_super_block
*s
,
706 s
->blocksize
= cpu_to_le32(val
);
709 static inline u64
btrfs_super_root_dir(struct btrfs_super_block
*s
)
711 return le64_to_cpu(s
->root_dir_objectid
);
714 static inline void btrfs_set_super_root_dir(struct btrfs_super_block
*s
, u64
717 s
->root_dir_objectid
= cpu_to_le64(val
);
720 static inline u8
*btrfs_leaf_data(struct btrfs_leaf
*l
)
722 return (u8
*)l
->items
;
725 static inline u64
btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item
728 return le64_to_cpu(e
->disk_blocknr
);
731 static inline void btrfs_set_file_extent_disk_blocknr(struct
732 btrfs_file_extent_item
735 e
->disk_blocknr
= cpu_to_le64(val
);
738 static inline u64
btrfs_file_extent_generation(struct btrfs_file_extent_item
*e
)
740 return le64_to_cpu(e
->generation
);
743 static inline void btrfs_set_file_extent_generation(struct
744 btrfs_file_extent_item
*e
,
747 e
->generation
= cpu_to_le64(val
);
750 static inline u64
btrfs_file_extent_disk_num_blocks(struct
751 btrfs_file_extent_item
*e
)
753 return le64_to_cpu(e
->disk_num_blocks
);
756 static inline void btrfs_set_file_extent_disk_num_blocks(struct
757 btrfs_file_extent_item
760 e
->disk_num_blocks
= cpu_to_le64(val
);
763 static inline u64
btrfs_file_extent_offset(struct btrfs_file_extent_item
*e
)
765 return le64_to_cpu(e
->offset
);
768 static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item
771 e
->offset
= cpu_to_le64(val
);
774 static inline u64
btrfs_file_extent_num_blocks(struct btrfs_file_extent_item
777 return le64_to_cpu(e
->num_blocks
);
780 static inline void btrfs_set_file_extent_num_blocks(struct
781 btrfs_file_extent_item
*e
,
784 e
->num_blocks
= cpu_to_le64(val
);
787 /* helper function to cast into the data area of the leaf. */
788 #define btrfs_item_ptr(leaf, slot, type) \
789 ((type *)(btrfs_leaf_data(leaf) + \
790 btrfs_item_offset((leaf)->items + (slot))))
792 struct btrfs_buffer
*btrfs_alloc_free_block(struct btrfs_trans_handle
*trans
,
793 struct btrfs_root
*root
);
794 int btrfs_inc_ref(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
795 struct btrfs_buffer
*buf
);
796 int btrfs_free_extent(struct btrfs_trans_handle
*trans
, struct btrfs_root
797 *root
, u64 blocknr
, u64 num_blocks
, int pin
);
798 int btrfs_search_slot(struct btrfs_trans_handle
*trans
, struct btrfs_root
799 *root
, struct btrfs_key
*key
, struct btrfs_path
*p
, int
801 void btrfs_release_path(struct btrfs_root
*root
, struct btrfs_path
*p
);
802 void btrfs_init_path(struct btrfs_path
*p
);
803 int btrfs_del_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
804 struct btrfs_path
*path
);
805 int btrfs_insert_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
806 *root
, struct btrfs_key
*key
, void *data
, u32 data_size
);
807 int btrfs_insert_empty_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
808 *root
, struct btrfs_path
*path
, struct btrfs_key
809 *cpu_key
, u32 data_size
);
810 int btrfs_next_leaf(struct btrfs_root
*root
, struct btrfs_path
*path
);
811 int btrfs_leaf_free_space(struct btrfs_root
*root
, struct btrfs_leaf
*leaf
);
812 int btrfs_drop_snapshot(struct btrfs_trans_handle
*trans
, struct btrfs_root
813 *root
, struct btrfs_buffer
*snap
);
814 int btrfs_finish_extent_commit(struct btrfs_trans_handle
*trans
, struct
816 int btrfs_del_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
817 struct btrfs_key
*key
);
818 int btrfs_insert_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
819 *root
, struct btrfs_key
*key
, struct btrfs_root_item
821 int btrfs_update_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
822 *root
, struct btrfs_key
*key
, struct btrfs_root_item
824 int btrfs_find_last_root(struct btrfs_root
*root
, u64 objectid
, struct
825 btrfs_root_item
*item
, struct btrfs_key
*key
);
826 int btrfs_insert_dir_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
827 *root
, char *name
, int name_len
, u64 dir
, u64
829 int btrfs_lookup_dir_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
830 *root
, struct btrfs_path
*path
, u64 dir
, char *name
,
831 int name_len
, int mod
);
832 int btrfs_match_dir_item_name(struct btrfs_root
*root
, struct btrfs_path
*path
,
833 char *name
, int name_len
);
834 int btrfs_find_free_objectid(struct btrfs_trans_handle
*trans
,
835 struct btrfs_root
*fs_root
,
836 u64 dirid
, u64
*objectid
);
837 int btrfs_insert_inode_map(struct btrfs_trans_handle
*trans
,
838 struct btrfs_root
*root
,
839 u64 objectid
, struct btrfs_key
*location
);
840 int btrfs_lookup_inode_map(struct btrfs_trans_handle
*trans
,
841 struct btrfs_root
*root
, struct btrfs_path
*path
,
842 u64 objectid
, int mod
);
843 int btrfs_insert_inode(struct btrfs_trans_handle
*trans
, struct btrfs_root
844 *root
, u64 objectid
, struct btrfs_inode_item
846 int btrfs_lookup_inode(struct btrfs_trans_handle
*trans
, struct btrfs_root
847 *root
, struct btrfs_path
*path
, u64 objectid
, int mod
);