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.
23 #include "kerncompat.h"
24 #include "radix-tree.h"
25 #include "extent-cache.h"
26 #include "extent_io.h"
29 struct btrfs_trans_handle
;
30 #define BTRFS_MAGIC "_BHRfS_M"
32 #define BTRFS_MAX_LEVEL 8
34 #define BTRFS_COMPAT_EXTENT_TREE_V0
36 /* holds pointers to all of the tree roots */
37 #define BTRFS_ROOT_TREE_OBJECTID 1ULL
39 /* stores information about which extents are in use, and reference counts */
40 #define BTRFS_EXTENT_TREE_OBJECTID 2ULL
43 * chunk tree stores translations from logical -> physical block numbering
44 * the super block points to the chunk tree
46 #define BTRFS_CHUNK_TREE_OBJECTID 3ULL
49 * stores information about which areas of a given device are in use.
50 * one per device. The tree of tree roots points to the device tree
52 #define BTRFS_DEV_TREE_OBJECTID 4ULL
54 /* one per subvolume, storing files and directories */
55 #define BTRFS_FS_TREE_OBJECTID 5ULL
57 /* directory objectid inside the root tree */
58 #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL
59 /* holds checksums of all the data extents */
60 #define BTRFS_CSUM_TREE_OBJECTID 7ULL
63 /* oprhan objectid for tracking unlinked/truncated files */
64 #define BTRFS_ORPHAN_OBJECTID -5ULL
66 /* does write ahead logging to speed up fsyncs */
67 #define BTRFS_TREE_LOG_OBJECTID -6ULL
68 #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL
71 #define BTRFS_TREE_RELOC_OBJECTID -8ULL
72 #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL
75 * extent checksums all have this objectid
76 * this allows them to share the logging tree
79 #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL
81 /* dummy objectid represents multiple objectids */
82 #define BTRFS_MULTIPLE_OBJECTIDS -255ULL
85 * All files have objectids in this range.
87 #define BTRFS_FIRST_FREE_OBJECTID 256ULL
88 #define BTRFS_LAST_FREE_OBJECTID -256ULL
89 #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL
94 * the device items go into the chunk tree. The key is in the form
95 * [ 1 BTRFS_DEV_ITEM_KEY device_id ]
97 #define BTRFS_DEV_ITEMS_OBJECTID 1ULL
100 * we can actually store much bigger names, but lets not confuse the rest
103 #define BTRFS_NAME_LEN 255
105 /* 32 bytes in various csum fields */
106 #define BTRFS_CSUM_SIZE 32
109 #define BTRFS_CSUM_TYPE_CRC32 0
113 #define BTRFS_CSUM_TYPE_CRC32 0
115 static int btrfs_csum_sizes
[] = { 4, 0 };
117 /* four bytes for CRC32 */
118 #define BTRFS_CRC32_SIZE 4
119 #define BTRFS_EMPTY_DIR_SIZE 0
121 #define BTRFS_FT_UNKNOWN 0
122 #define BTRFS_FT_REG_FILE 1
123 #define BTRFS_FT_DIR 2
124 #define BTRFS_FT_CHRDEV 3
125 #define BTRFS_FT_BLKDEV 4
126 #define BTRFS_FT_FIFO 5
127 #define BTRFS_FT_SOCK 6
128 #define BTRFS_FT_SYMLINK 7
129 #define BTRFS_FT_XATTR 8
130 #define BTRFS_FT_MAX 9
133 * the key defines the order in the tree, and so it also defines (optimal)
134 * block layout. objectid corresonds to the inode number. The flags
135 * tells us things about the object, and is a kind of stream selector.
136 * so for a given inode, keys with flags of 1 might refer to the inode
137 * data, flags of 2 may point to file data in the btree and flags == 3
138 * may point to extents.
140 * offset is the starting byte offset for this key in the stream.
142 * btrfs_disk_key is in disk byte order. struct btrfs_key is always
143 * in cpu native order. Otherwise they are identical and their sizes
144 * should be the same (ie both packed)
146 struct btrfs_disk_key
{
150 } __attribute__ ((__packed__
));
156 } __attribute__ ((__packed__
));
158 struct btrfs_mapping_tree
{
159 struct cache_tree cache_tree
;
162 #define BTRFS_UUID_SIZE 16
163 struct btrfs_dev_item
{
164 /* the internal btrfs device id */
167 /* size of the device */
173 /* optimal io alignment for this device */
176 /* optimal io width for this device */
179 /* minimal io size for this device */
182 /* type and info about this device */
185 /* expected generation for this device */
189 * starting byte of this partition on the device,
190 * to allowr for stripe alignment in the future
194 /* grouping information for allocation decisions */
197 /* seek speed 0-100 where 100 is fastest */
200 /* bandwidth 0-100 where 100 is fastest */
203 /* btrfs generated uuid for this device */
204 u8 uuid
[BTRFS_UUID_SIZE
];
206 /* uuid of FS who owns this device */
207 u8 fsid
[BTRFS_UUID_SIZE
];
208 } __attribute__ ((__packed__
));
210 struct btrfs_stripe
{
213 u8 dev_uuid
[BTRFS_UUID_SIZE
];
214 } __attribute__ ((__packed__
));
217 /* size of this chunk in bytes */
220 /* objectid of the root referencing this chunk */
226 /* optimal io alignment for this chunk */
229 /* optimal io width for this chunk */
232 /* minimal io size for this chunk */
235 /* 2^16 stripes is quite a lot, a second limit is the size of a single
240 /* sub stripes only matter for raid10 */
242 struct btrfs_stripe stripe
;
243 /* additional stripes go here */
244 } __attribute__ ((__packed__
));
246 static inline unsigned long btrfs_chunk_item_size(int num_stripes
)
248 BUG_ON(num_stripes
== 0);
249 return sizeof(struct btrfs_chunk
) +
250 sizeof(struct btrfs_stripe
) * (num_stripes
- 1);
253 #define BTRFS_FSID_SIZE 16
254 #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0)
255 #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1)
256 #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32)
257 #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33)
259 #define BTRFS_BACKREF_REV_MAX 256
260 #define BTRFS_BACKREF_REV_SHIFT 56
261 #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \
262 BTRFS_BACKREF_REV_SHIFT)
264 #define BTRFS_OLD_BACKREF_REV 0
265 #define BTRFS_MIXED_BACKREF_REV 1
268 * every tree block (leaf or node) starts with this header.
270 struct btrfs_header
{
271 /* these first four must match the super block */
272 u8 csum
[BTRFS_CSUM_SIZE
];
273 u8 fsid
[BTRFS_FSID_SIZE
]; /* FS specific uuid */
274 __le64 bytenr
; /* which block this node is supposed to live in */
277 /* allowed to be different from the super from here on down */
278 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
283 } __attribute__ ((__packed__
));
285 #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \
286 sizeof(struct btrfs_header)) / \
287 sizeof(struct btrfs_key_ptr))
288 #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header))
289 #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize))
290 #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \
291 sizeof(struct btrfs_item) - \
292 sizeof(struct btrfs_file_extent_item))
296 * this is a very generous portion of the super block, giving us
297 * room to translate 14 chunks with 3 stripes each.
299 #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048
300 #define BTRFS_LABEL_SIZE 256
303 * the super block basically lists the main trees of the FS
304 * it currently lacks any block count etc etc
306 struct btrfs_super_block
{
307 u8 csum
[BTRFS_CSUM_SIZE
];
308 /* the first 3 fields must match struct btrfs_header */
309 u8 fsid
[BTRFS_FSID_SIZE
]; /* FS specific uuid */
310 __le64 bytenr
; /* this block number */
313 /* allowed to be different from the btrfs_header from here own down */
320 /* this will help find the new super based on the log root */
321 __le64 log_root_transid
;
324 __le64 root_dir_objectid
;
330 __le32 sys_chunk_array_size
;
331 __le64 chunk_root_generation
;
333 __le64 compat_ro_flags
;
334 __le64 incompat_flags
;
339 struct btrfs_dev_item dev_item
;
341 char label
[BTRFS_LABEL_SIZE
];
343 /* future expansion */
345 u8 sys_chunk_array
[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE
];
346 } __attribute__ ((__packed__
));
349 * Compat flags that we support. If any incompat flags are set other than the
350 * ones specified below then we will fail to mount
352 #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0)
354 #define BTRFS_FEATURE_COMPAT_SUPP 0ULL
355 #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL
356 #define BTRFS_FEATURE_INCOMPAT_SUPP \
357 BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF
360 * A leaf is full of items. offset and size tell us where to find
361 * the item in the leaf (relative to the start of the data area)
364 struct btrfs_disk_key key
;
367 } __attribute__ ((__packed__
));
370 * leaves have an item area and a data area:
371 * [item0, item1....itemN] [free space] [dataN...data1, data0]
373 * The data is separate from the items to get the keys closer together
377 struct btrfs_header header
;
378 struct btrfs_item items
[];
379 } __attribute__ ((__packed__
));
382 * all non-leaf blocks are nodes, they hold only keys and pointers to
385 struct btrfs_key_ptr
{
386 struct btrfs_disk_key key
;
389 } __attribute__ ((__packed__
));
392 struct btrfs_header header
;
393 struct btrfs_key_ptr ptrs
[];
394 } __attribute__ ((__packed__
));
397 * btrfs_paths remember the path taken from the root down to the leaf.
398 * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point
399 * to any other levels that are present.
401 * The slots array records the index of the item or block pointer
402 * used while walking the tree.
406 struct extent_buffer
*nodes
[BTRFS_MAX_LEVEL
];
407 int slots
[BTRFS_MAX_LEVEL
];
408 /* if there is real range locking, this locks field will change */
409 int locks
[BTRFS_MAX_LEVEL
];
411 /* keep some upper locks as we walk down */
415 * set by btrfs_split_item, tells search_slot to keep all locks
416 * and to force calls to keep space in the nodes
418 unsigned int search_for_split
:1;
419 unsigned int keep_locks
:1;
420 unsigned int skip_locking
:1;
421 unsigned int leave_spinning
:1;
425 * items in the extent btree are used to record the objectid of the
426 * owner of the block and the number of references
429 struct btrfs_extent_item
{
433 } __attribute__ ((__packed__
));
435 struct btrfs_extent_item_v0
{
437 } __attribute__ ((__packed__
));
439 #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \
440 sizeof(struct btrfs_item))
442 #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0)
443 #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1)
445 /* following flags only apply to tree blocks */
447 /* use full backrefs for extent pointers in the block*/
448 #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8)
450 struct btrfs_tree_block_info
{
451 struct btrfs_disk_key key
;
453 } __attribute__ ((__packed__
));
455 struct btrfs_extent_data_ref
{
460 } __attribute__ ((__packed__
));
462 struct btrfs_shared_data_ref
{
464 } __attribute__ ((__packed__
));
466 struct btrfs_extent_inline_ref
{
469 } __attribute__ ((__packed__
));
471 struct btrfs_extent_ref_v0
{
476 } __attribute__ ((__packed__
));
478 /* dev extents record free space on individual devices. The owner
479 * field points back to the chunk allocation mapping tree that allocated
480 * the extent. The chunk tree uuid field is a way to double check the owner
482 struct btrfs_dev_extent
{
484 __le64 chunk_objectid
;
487 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
488 } __attribute__ ((__packed__
));
490 struct btrfs_inode_ref
{
494 } __attribute__ ((__packed__
));
496 struct btrfs_timespec
{
499 } __attribute__ ((__packed__
));
502 BTRFS_COMPRESS_NONE
= 0,
503 BTRFS_COMPRESS_ZLIB
= 1,
504 BTRFS_COMPRESS_LAST
= 2,
505 } btrfs_compression_type
;
507 /* we don't understand any encryption methods right now */
509 BTRFS_ENCRYPTION_NONE
= 0,
510 BTRFS_ENCRYPTION_LAST
= 1,
511 } btrfs_encryption_type
;
513 struct btrfs_inode_item
{
514 /* nfs style generation number */
516 /* transid that last touched this inode */
528 /* modification sequence number for NFS */
532 * a little future expansion, for more than this we can
533 * just grow the inode item and version it
536 struct btrfs_timespec atime
;
537 struct btrfs_timespec ctime
;
538 struct btrfs_timespec mtime
;
539 struct btrfs_timespec otime
;
540 } __attribute__ ((__packed__
));
542 struct btrfs_dir_log_item
{
544 } __attribute__ ((__packed__
));
546 struct btrfs_dir_item
{
547 struct btrfs_disk_key location
;
552 } __attribute__ ((__packed__
));
554 struct btrfs_root_item
{
555 struct btrfs_inode_item inode
;
561 __le64 last_snapshot
;
564 struct btrfs_disk_key drop_progress
;
567 } __attribute__ ((__packed__
));
570 * this is used for both forward and backward root refs
572 struct btrfs_root_ref
{
576 } __attribute__ ((__packed__
));
578 #define BTRFS_FILE_EXTENT_INLINE 0
579 #define BTRFS_FILE_EXTENT_REG 1
580 #define BTRFS_FILE_EXTENT_PREALLOC 2
582 struct btrfs_file_extent_item
{
584 * transaction id that created this extent
588 * max number of bytes to hold this extent in ram
589 * when we split a compressed extent we can't know how big
590 * each of the resulting pieces will be. So, this is
591 * an upper limit on the size of the extent in ram instead of
597 * 32 bits for the various ways we might encode the data,
598 * including compression and encryption. If any of these
599 * are set to something a given disk format doesn't understand
600 * it is treated like an incompat flag for reading and writing,
605 __le16 other_encoding
; /* spare for later use */
607 /* are we inline data or a real extent? */
611 * disk space consumed by the extent, checksum blocks are included
615 __le64 disk_num_bytes
;
617 * the logical offset in file blocks (no csums)
618 * this extent record is for. This allows a file extent to point
619 * into the middle of an existing extent on disk, sharing it
620 * between two snapshots (useful if some bytes in the middle of the
621 * extent have changed
625 * the logical number of file blocks (no csums included)
629 } __attribute__ ((__packed__
));
631 struct btrfs_csum_item
{
633 } __attribute__ ((__packed__
));
635 /* tag for the radix tree of block groups in ram */
636 #define BTRFS_BLOCK_GROUP_DATA (1 << 0)
637 #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1)
638 #define BTRFS_BLOCK_GROUP_METADATA (1 << 2)
639 #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3)
640 #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4)
641 #define BTRFS_BLOCK_GROUP_DUP (1 << 5)
642 #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6)
644 struct btrfs_block_group_item
{
646 __le64 chunk_objectid
;
648 } __attribute__ ((__packed__
));
650 struct btrfs_space_info
{
656 struct list_head list
;
659 struct btrfs_block_group_cache
{
660 struct cache_extent cache
;
661 struct btrfs_key key
;
662 struct btrfs_block_group_item item
;
663 struct btrfs_space_info
*space_info
;
670 struct btrfs_extent_ops
{
671 int (*alloc_extent
)(struct btrfs_root
*root
, u64 num_bytes
,
672 u64 hint_byte
, struct btrfs_key
*ins
);
673 int (*free_extent
)(struct btrfs_root
*root
, u64 bytenr
,
678 struct btrfs_fs_devices
;
679 struct btrfs_fs_info
{
680 u8 fsid
[BTRFS_FSID_SIZE
];
681 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
682 struct btrfs_root
*fs_root
;
683 struct btrfs_root
*extent_root
;
684 struct btrfs_root
*tree_root
;
685 struct btrfs_root
*chunk_root
;
686 struct btrfs_root
*dev_root
;
687 struct btrfs_root
*csum_root
;
689 struct cache_tree fs_root_cache
;
691 /* the log root tree is a directory of all the other log roots */
692 struct btrfs_root
*log_root_tree
;
694 struct extent_io_tree extent_cache
;
695 struct extent_io_tree free_space_cache
;
696 struct extent_io_tree block_group_cache
;
697 struct extent_io_tree pinned_extents
;
698 struct extent_io_tree pending_del
;
699 struct extent_io_tree extent_ins
;
701 /* logical->physical extent mapping */
702 struct btrfs_mapping_tree mapping_tree
;
705 u64 last_trans_committed
;
707 u64 avail_data_alloc_bits
;
708 u64 avail_metadata_alloc_bits
;
709 u64 avail_system_alloc_bits
;
710 u64 data_alloc_profile
;
711 u64 metadata_alloc_profile
;
712 u64 system_alloc_profile
;
715 struct btrfs_trans_handle
*running_transaction
;
716 struct btrfs_super_block super_copy
;
717 struct mutex fs_mutex
;
722 struct btrfs_extent_ops
*extent_ops
;
723 struct list_head dirty_cowonly_roots
;
725 struct btrfs_fs_devices
*fs_devices
;
726 struct list_head space_info
;
732 * in ram representation of the tree. extent_root is used for all allocations
733 * and for the extent tree extent_root root.
736 struct extent_buffer
*node
;
737 struct extent_buffer
*commit_root
;
738 struct btrfs_root_item root_item
;
739 struct btrfs_key root_key
;
740 struct btrfs_fs_info
*fs_info
;
744 /* data allocations are done in sectorsize units */
747 /* node allocations are done in nodesize units */
750 /* leaf allocations are done in leafsize units */
753 /* leaf allocations are done in leafsize units */
762 u64 last_inode_alloc
;
764 /* the dirty list is only used by non-reference counted roots */
765 struct list_head dirty_list
;
766 struct cache_extent cache
;
770 * inode items have the data typically returned from stat and store other
771 * info about object characteristics. There is one for every file and dir in
774 #define BTRFS_INODE_ITEM_KEY 1
775 #define BTRFS_INODE_REF_KEY 12
776 #define BTRFS_XATTR_ITEM_KEY 24
777 #define BTRFS_ORPHAN_ITEM_KEY 48
779 #define BTRFS_DIR_LOG_ITEM_KEY 60
780 #define BTRFS_DIR_LOG_INDEX_KEY 72
782 * dir items are the name -> inode pointers in a directory. There is one
783 * for every name in a directory.
785 #define BTRFS_DIR_ITEM_KEY 84
786 #define BTRFS_DIR_INDEX_KEY 96
789 * extent data is for file data
791 #define BTRFS_EXTENT_DATA_KEY 108
794 * csum items have the checksums for data in the extents
796 #define BTRFS_CSUM_ITEM_KEY 120
798 * extent csums are stored in a separate tree and hold csums for
799 * an entire extent on disk.
801 #define BTRFS_EXTENT_CSUM_KEY 128
804 * root items point to tree roots. There are typically in the root
805 * tree used by the super block to find all the other trees
807 #define BTRFS_ROOT_ITEM_KEY 132
810 * root backrefs tie subvols and snapshots to the directory entries that
813 #define BTRFS_ROOT_BACKREF_KEY 144
816 * root refs make a fast index for listing all of the snapshots and
817 * subvolumes referenced by a given root. They point directly to the
818 * directory item in the root that references the subvol
820 #define BTRFS_ROOT_REF_KEY 156
823 * extent items are in the extent map tree. These record which blocks
824 * are used, and how many references there are to each block
826 #define BTRFS_EXTENT_ITEM_KEY 168
828 #define BTRFS_TREE_BLOCK_REF_KEY 176
830 #define BTRFS_EXTENT_DATA_REF_KEY 178
832 /* old style extent backrefs */
833 #define BTRFS_EXTENT_REF_V0_KEY 180
835 #define BTRFS_SHARED_BLOCK_REF_KEY 182
837 #define BTRFS_SHARED_DATA_REF_KEY 184
841 * block groups give us hints into the extent allocation trees. Which
842 * blocks are free etc etc
844 #define BTRFS_BLOCK_GROUP_ITEM_KEY 192
846 #define BTRFS_DEV_EXTENT_KEY 204
847 #define BTRFS_DEV_ITEM_KEY 216
848 #define BTRFS_CHUNK_ITEM_KEY 228
851 * string items are for debugging. They just store a short string of
854 #define BTRFS_STRING_ITEM_KEY 253
858 #define BTRFS_INODE_NODATASUM (1 << 0)
859 #define BTRFS_INODE_NODATACOW (1 << 1)
860 #define BTRFS_INODE_READONLY (1 << 2)
862 #define read_eb_member(eb, ptr, type, member, result) ( \
863 read_extent_buffer(eb, (char *)(result), \
864 ((unsigned long)(ptr)) + \
865 offsetof(type, member), \
866 sizeof(((type *)0)->member)))
868 #define write_eb_member(eb, ptr, type, member, result) ( \
869 write_extent_buffer(eb, (char *)(result), \
870 ((unsigned long)(ptr)) + \
871 offsetof(type, member), \
872 sizeof(((type *)0)->member)))
874 #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
875 static inline u##bits btrfs_##name(struct extent_buffer *eb) \
877 struct btrfs_header *h = (struct btrfs_header *)eb->data; \
878 return le##bits##_to_cpu(h->member); \
880 static inline void btrfs_set_##name(struct extent_buffer *eb, \
883 struct btrfs_header *h = (struct btrfs_header *)eb->data; \
884 h->member = cpu_to_le##bits(val); \
887 #define BTRFS_SETGET_FUNCS(name, type, member, bits) \
888 static inline u##bits btrfs_##name(struct extent_buffer *eb, \
891 unsigned long offset = (unsigned long)s; \
892 type *p = (type *) (eb->data + offset); \
893 return le##bits##_to_cpu(p->member); \
895 static inline void btrfs_set_##name(struct extent_buffer *eb, \
896 type *s, u##bits val) \
898 unsigned long offset = (unsigned long)s; \
899 type *p = (type *) (eb->data + offset); \
900 p->member = cpu_to_le##bits(val); \
903 #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
904 static inline u##bits btrfs_##name(type *s) \
906 return le##bits##_to_cpu(s->member); \
908 static inline void btrfs_set_##name(type *s, u##bits val) \
910 s->member = cpu_to_le##bits(val); \
913 BTRFS_SETGET_FUNCS(device_type
, struct btrfs_dev_item
, type
, 64);
914 BTRFS_SETGET_FUNCS(device_total_bytes
, struct btrfs_dev_item
, total_bytes
, 64);
915 BTRFS_SETGET_FUNCS(device_bytes_used
, struct btrfs_dev_item
, bytes_used
, 64);
916 BTRFS_SETGET_FUNCS(device_io_align
, struct btrfs_dev_item
, io_align
, 32);
917 BTRFS_SETGET_FUNCS(device_io_width
, struct btrfs_dev_item
, io_width
, 32);
918 BTRFS_SETGET_FUNCS(device_start_offset
, struct btrfs_dev_item
,
920 BTRFS_SETGET_FUNCS(device_sector_size
, struct btrfs_dev_item
, sector_size
, 32);
921 BTRFS_SETGET_FUNCS(device_id
, struct btrfs_dev_item
, devid
, 64);
922 BTRFS_SETGET_FUNCS(device_group
, struct btrfs_dev_item
, dev_group
, 32);
923 BTRFS_SETGET_FUNCS(device_seek_speed
, struct btrfs_dev_item
, seek_speed
, 8);
924 BTRFS_SETGET_FUNCS(device_bandwidth
, struct btrfs_dev_item
, bandwidth
, 8);
925 BTRFS_SETGET_FUNCS(device_generation
, struct btrfs_dev_item
, generation
, 64);
927 BTRFS_SETGET_STACK_FUNCS(stack_device_type
, struct btrfs_dev_item
, type
, 64);
928 BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes
, struct btrfs_dev_item
,
930 BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used
, struct btrfs_dev_item
,
932 BTRFS_SETGET_STACK_FUNCS(stack_device_io_align
, struct btrfs_dev_item
,
934 BTRFS_SETGET_STACK_FUNCS(stack_device_io_width
, struct btrfs_dev_item
,
936 BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size
, struct btrfs_dev_item
,
938 BTRFS_SETGET_STACK_FUNCS(stack_device_id
, struct btrfs_dev_item
, devid
, 64);
939 BTRFS_SETGET_STACK_FUNCS(stack_device_group
, struct btrfs_dev_item
,
941 BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed
, struct btrfs_dev_item
,
943 BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth
, struct btrfs_dev_item
,
945 BTRFS_SETGET_STACK_FUNCS(stack_device_generation
, struct btrfs_dev_item
,
948 static inline char *btrfs_device_uuid(struct btrfs_dev_item
*d
)
950 return (char *)d
+ offsetof(struct btrfs_dev_item
, uuid
);
953 static inline char *btrfs_device_fsid(struct btrfs_dev_item
*d
)
955 return (char *)d
+ offsetof(struct btrfs_dev_item
, fsid
);
958 BTRFS_SETGET_FUNCS(chunk_length
, struct btrfs_chunk
, length
, 64);
959 BTRFS_SETGET_FUNCS(chunk_owner
, struct btrfs_chunk
, owner
, 64);
960 BTRFS_SETGET_FUNCS(chunk_stripe_len
, struct btrfs_chunk
, stripe_len
, 64);
961 BTRFS_SETGET_FUNCS(chunk_io_align
, struct btrfs_chunk
, io_align
, 32);
962 BTRFS_SETGET_FUNCS(chunk_io_width
, struct btrfs_chunk
, io_width
, 32);
963 BTRFS_SETGET_FUNCS(chunk_sector_size
, struct btrfs_chunk
, sector_size
, 32);
964 BTRFS_SETGET_FUNCS(chunk_type
, struct btrfs_chunk
, type
, 64);
965 BTRFS_SETGET_FUNCS(chunk_num_stripes
, struct btrfs_chunk
, num_stripes
, 16);
966 BTRFS_SETGET_FUNCS(chunk_sub_stripes
, struct btrfs_chunk
, sub_stripes
, 16);
967 BTRFS_SETGET_FUNCS(stripe_devid
, struct btrfs_stripe
, devid
, 64);
968 BTRFS_SETGET_FUNCS(stripe_offset
, struct btrfs_stripe
, offset
, 64);
970 static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe
*s
)
972 return (char *)s
+ offsetof(struct btrfs_stripe
, dev_uuid
);
975 BTRFS_SETGET_STACK_FUNCS(stack_chunk_length
, struct btrfs_chunk
, length
, 64);
976 BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner
, struct btrfs_chunk
, owner
, 64);
977 BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len
, struct btrfs_chunk
,
979 BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align
, struct btrfs_chunk
,
981 BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width
, struct btrfs_chunk
,
983 BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size
, struct btrfs_chunk
,
985 BTRFS_SETGET_STACK_FUNCS(stack_chunk_type
, struct btrfs_chunk
, type
, 64);
986 BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes
, struct btrfs_chunk
,
988 BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes
, struct btrfs_chunk
,
990 BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid
, struct btrfs_stripe
, devid
, 64);
991 BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset
, struct btrfs_stripe
, offset
, 64);
993 static inline struct btrfs_stripe
*btrfs_stripe_nr(struct btrfs_chunk
*c
,
996 unsigned long offset
= (unsigned long)c
;
997 offset
+= offsetof(struct btrfs_chunk
, stripe
);
998 offset
+= nr
* sizeof(struct btrfs_stripe
);
999 return (struct btrfs_stripe
*)offset
;
1002 static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk
*c
, int nr
)
1004 return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c
, nr
));
1007 static inline u64
btrfs_stripe_offset_nr(struct extent_buffer
*eb
,
1008 struct btrfs_chunk
*c
, int nr
)
1010 return btrfs_stripe_offset(eb
, btrfs_stripe_nr(c
, nr
));
1013 static inline void btrfs_set_stripe_offset_nr(struct extent_buffer
*eb
,
1014 struct btrfs_chunk
*c
, int nr
,
1017 btrfs_set_stripe_offset(eb
, btrfs_stripe_nr(c
, nr
), val
);
1020 static inline u64
btrfs_stripe_devid_nr(struct extent_buffer
*eb
,
1021 struct btrfs_chunk
*c
, int nr
)
1023 return btrfs_stripe_devid(eb
, btrfs_stripe_nr(c
, nr
));
1026 static inline void btrfs_set_stripe_devid_nr(struct extent_buffer
*eb
,
1027 struct btrfs_chunk
*c
, int nr
,
1030 btrfs_set_stripe_devid(eb
, btrfs_stripe_nr(c
, nr
), val
);
1033 /* struct btrfs_block_group_item */
1034 BTRFS_SETGET_STACK_FUNCS(block_group_used
, struct btrfs_block_group_item
,
1036 BTRFS_SETGET_FUNCS(disk_block_group_used
, struct btrfs_block_group_item
,
1038 BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid
,
1039 struct btrfs_block_group_item
, chunk_objectid
, 64);
1041 BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid
,
1042 struct btrfs_block_group_item
, chunk_objectid
, 64);
1043 BTRFS_SETGET_FUNCS(disk_block_group_flags
,
1044 struct btrfs_block_group_item
, flags
, 64);
1045 BTRFS_SETGET_STACK_FUNCS(block_group_flags
,
1046 struct btrfs_block_group_item
, flags
, 64);
1048 /* struct btrfs_inode_ref */
1049 BTRFS_SETGET_FUNCS(inode_ref_name_len
, struct btrfs_inode_ref
, name_len
, 16);
1050 BTRFS_SETGET_FUNCS(inode_ref_index
, struct btrfs_inode_ref
, index
, 64);
1052 /* struct btrfs_inode_item */
1053 BTRFS_SETGET_FUNCS(inode_generation
, struct btrfs_inode_item
, generation
, 64);
1054 BTRFS_SETGET_FUNCS(inode_sequence
, struct btrfs_inode_item
, sequence
, 64);
1055 BTRFS_SETGET_FUNCS(inode_transid
, struct btrfs_inode_item
, transid
, 64);
1056 BTRFS_SETGET_FUNCS(inode_size
, struct btrfs_inode_item
, size
, 64);
1057 BTRFS_SETGET_FUNCS(inode_nbytes
, struct btrfs_inode_item
, nbytes
, 64);
1058 BTRFS_SETGET_FUNCS(inode_block_group
, struct btrfs_inode_item
, block_group
, 64);
1059 BTRFS_SETGET_FUNCS(inode_nlink
, struct btrfs_inode_item
, nlink
, 32);
1060 BTRFS_SETGET_FUNCS(inode_uid
, struct btrfs_inode_item
, uid
, 32);
1061 BTRFS_SETGET_FUNCS(inode_gid
, struct btrfs_inode_item
, gid
, 32);
1062 BTRFS_SETGET_FUNCS(inode_mode
, struct btrfs_inode_item
, mode
, 32);
1063 BTRFS_SETGET_FUNCS(inode_rdev
, struct btrfs_inode_item
, rdev
, 64);
1064 BTRFS_SETGET_FUNCS(inode_flags
, struct btrfs_inode_item
, flags
, 64);
1066 BTRFS_SETGET_STACK_FUNCS(stack_inode_generation
,
1067 struct btrfs_inode_item
, generation
, 64);
1068 BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence
,
1069 struct btrfs_inode_item
, generation
, 64);
1070 BTRFS_SETGET_STACK_FUNCS(stack_inode_size
,
1071 struct btrfs_inode_item
, size
, 64);
1072 BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes
,
1073 struct btrfs_inode_item
, nbytes
, 64);
1074 BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group
,
1075 struct btrfs_inode_item
, block_group
, 64);
1076 BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink
,
1077 struct btrfs_inode_item
, nlink
, 32);
1078 BTRFS_SETGET_STACK_FUNCS(stack_inode_uid
,
1079 struct btrfs_inode_item
, uid
, 32);
1080 BTRFS_SETGET_STACK_FUNCS(stack_inode_gid
,
1081 struct btrfs_inode_item
, gid
, 32);
1082 BTRFS_SETGET_STACK_FUNCS(stack_inode_mode
,
1083 struct btrfs_inode_item
, mode
, 32);
1084 BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev
,
1085 struct btrfs_inode_item
, rdev
, 64);
1086 BTRFS_SETGET_STACK_FUNCS(stack_inode_flags
,
1087 struct btrfs_inode_item
, flags
, 64);
1089 static inline struct btrfs_timespec
*
1090 btrfs_inode_atime(struct btrfs_inode_item
*inode_item
)
1092 unsigned long ptr
= (unsigned long)inode_item
;
1093 ptr
+= offsetof(struct btrfs_inode_item
, atime
);
1094 return (struct btrfs_timespec
*)ptr
;
1097 static inline struct btrfs_timespec
*
1098 btrfs_inode_mtime(struct btrfs_inode_item
*inode_item
)
1100 unsigned long ptr
= (unsigned long)inode_item
;
1101 ptr
+= offsetof(struct btrfs_inode_item
, mtime
);
1102 return (struct btrfs_timespec
*)ptr
;
1105 static inline struct btrfs_timespec
*
1106 btrfs_inode_ctime(struct btrfs_inode_item
*inode_item
)
1108 unsigned long ptr
= (unsigned long)inode_item
;
1109 ptr
+= offsetof(struct btrfs_inode_item
, ctime
);
1110 return (struct btrfs_timespec
*)ptr
;
1113 static inline struct btrfs_timespec
*
1114 btrfs_inode_otime(struct btrfs_inode_item
*inode_item
)
1116 unsigned long ptr
= (unsigned long)inode_item
;
1117 ptr
+= offsetof(struct btrfs_inode_item
, otime
);
1118 return (struct btrfs_timespec
*)ptr
;
1121 BTRFS_SETGET_FUNCS(timespec_sec
, struct btrfs_timespec
, sec
, 64);
1122 BTRFS_SETGET_FUNCS(timespec_nsec
, struct btrfs_timespec
, nsec
, 32);
1123 BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec
, struct btrfs_timespec
,
1125 BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec
, struct btrfs_timespec
,
1128 /* struct btrfs_dev_extent */
1129 BTRFS_SETGET_FUNCS(dev_extent_chunk_tree
, struct btrfs_dev_extent
,
1131 BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid
, struct btrfs_dev_extent
,
1132 chunk_objectid
, 64);
1133 BTRFS_SETGET_FUNCS(dev_extent_chunk_offset
, struct btrfs_dev_extent
,
1135 BTRFS_SETGET_FUNCS(dev_extent_length
, struct btrfs_dev_extent
, length
, 64);
1137 static inline u8
*btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent
*dev
)
1139 unsigned long ptr
= offsetof(struct btrfs_dev_extent
, chunk_tree_uuid
);
1140 return (u8
*)((unsigned long)dev
+ ptr
);
1144 /* struct btrfs_extent_item */
1145 BTRFS_SETGET_FUNCS(extent_refs
, struct btrfs_extent_item
, refs
, 64);
1146 BTRFS_SETGET_FUNCS(extent_generation
, struct btrfs_extent_item
,
1148 BTRFS_SETGET_FUNCS(extent_flags
, struct btrfs_extent_item
, flags
, 64);
1150 BTRFS_SETGET_FUNCS(extent_refs_v0
, struct btrfs_extent_item_v0
, refs
, 32);
1152 BTRFS_SETGET_FUNCS(tree_block_level
, struct btrfs_tree_block_info
, level
, 8);
1154 static inline void btrfs_tree_block_key(struct extent_buffer
*eb
,
1155 struct btrfs_tree_block_info
*item
,
1156 struct btrfs_disk_key
*key
)
1158 read_eb_member(eb
, item
, struct btrfs_tree_block_info
, key
, key
);
1161 static inline void btrfs_set_tree_block_key(struct extent_buffer
*eb
,
1162 struct btrfs_tree_block_info
*item
,
1163 struct btrfs_disk_key
*key
)
1165 write_eb_member(eb
, item
, struct btrfs_tree_block_info
, key
, key
);
1168 BTRFS_SETGET_FUNCS(extent_data_ref_root
, struct btrfs_extent_data_ref
,
1170 BTRFS_SETGET_FUNCS(extent_data_ref_objectid
, struct btrfs_extent_data_ref
,
1172 BTRFS_SETGET_FUNCS(extent_data_ref_offset
, struct btrfs_extent_data_ref
,
1174 BTRFS_SETGET_FUNCS(extent_data_ref_count
, struct btrfs_extent_data_ref
,
1177 BTRFS_SETGET_FUNCS(shared_data_ref_count
, struct btrfs_shared_data_ref
,
1180 BTRFS_SETGET_FUNCS(extent_inline_ref_type
, struct btrfs_extent_inline_ref
,
1182 BTRFS_SETGET_FUNCS(extent_inline_ref_offset
, struct btrfs_extent_inline_ref
,
1185 static inline u32
btrfs_extent_inline_ref_size(int type
)
1187 if (type
== BTRFS_TREE_BLOCK_REF_KEY
||
1188 type
== BTRFS_SHARED_BLOCK_REF_KEY
)
1189 return sizeof(struct btrfs_extent_inline_ref
);
1190 if (type
== BTRFS_SHARED_DATA_REF_KEY
)
1191 return sizeof(struct btrfs_shared_data_ref
) +
1192 sizeof(struct btrfs_extent_inline_ref
);
1193 if (type
== BTRFS_EXTENT_DATA_REF_KEY
)
1194 return sizeof(struct btrfs_extent_data_ref
) +
1195 offsetof(struct btrfs_extent_inline_ref
, offset
);
1200 BTRFS_SETGET_FUNCS(ref_root_v0
, struct btrfs_extent_ref_v0
, root
, 64);
1201 BTRFS_SETGET_FUNCS(ref_generation_v0
, struct btrfs_extent_ref_v0
,
1203 BTRFS_SETGET_FUNCS(ref_objectid_v0
, struct btrfs_extent_ref_v0
, objectid
, 64);
1204 BTRFS_SETGET_FUNCS(ref_count_v0
, struct btrfs_extent_ref_v0
, count
, 32);
1206 /* struct btrfs_node */
1207 BTRFS_SETGET_FUNCS(key_blockptr
, struct btrfs_key_ptr
, blockptr
, 64);
1208 BTRFS_SETGET_FUNCS(key_generation
, struct btrfs_key_ptr
, generation
, 64);
1210 static inline u64
btrfs_node_blockptr(struct extent_buffer
*eb
, int nr
)
1213 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1214 sizeof(struct btrfs_key_ptr
) * nr
;
1215 return btrfs_key_blockptr(eb
, (struct btrfs_key_ptr
*)ptr
);
1218 static inline void btrfs_set_node_blockptr(struct extent_buffer
*eb
,
1222 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1223 sizeof(struct btrfs_key_ptr
) * nr
;
1224 btrfs_set_key_blockptr(eb
, (struct btrfs_key_ptr
*)ptr
, val
);
1227 static inline u64
btrfs_node_ptr_generation(struct extent_buffer
*eb
, int nr
)
1230 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1231 sizeof(struct btrfs_key_ptr
) * nr
;
1232 return btrfs_key_generation(eb
, (struct btrfs_key_ptr
*)ptr
);
1235 static inline void btrfs_set_node_ptr_generation(struct extent_buffer
*eb
,
1239 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1240 sizeof(struct btrfs_key_ptr
) * nr
;
1241 btrfs_set_key_generation(eb
, (struct btrfs_key_ptr
*)ptr
, val
);
1244 static inline unsigned long btrfs_node_key_ptr_offset(int nr
)
1246 return offsetof(struct btrfs_node
, ptrs
) +
1247 sizeof(struct btrfs_key_ptr
) * nr
;
1250 static inline void btrfs_node_key(struct extent_buffer
*eb
,
1251 struct btrfs_disk_key
*disk_key
, int nr
)
1254 ptr
= btrfs_node_key_ptr_offset(nr
);
1255 read_eb_member(eb
, (struct btrfs_key_ptr
*)ptr
,
1256 struct btrfs_key_ptr
, key
, disk_key
);
1259 static inline void btrfs_set_node_key(struct extent_buffer
*eb
,
1260 struct btrfs_disk_key
*disk_key
, int nr
)
1263 ptr
= btrfs_node_key_ptr_offset(nr
);
1264 write_eb_member(eb
, (struct btrfs_key_ptr
*)ptr
,
1265 struct btrfs_key_ptr
, key
, disk_key
);
1268 /* struct btrfs_item */
1269 BTRFS_SETGET_FUNCS(item_offset
, struct btrfs_item
, offset
, 32);
1270 BTRFS_SETGET_FUNCS(item_size
, struct btrfs_item
, size
, 32);
1272 static inline unsigned long btrfs_item_nr_offset(int nr
)
1274 return offsetof(struct btrfs_leaf
, items
) +
1275 sizeof(struct btrfs_item
) * nr
;
1278 static inline struct btrfs_item
*btrfs_item_nr(struct extent_buffer
*eb
,
1281 return (struct btrfs_item
*)btrfs_item_nr_offset(nr
);
1284 static inline u32
btrfs_item_end(struct extent_buffer
*eb
,
1285 struct btrfs_item
*item
)
1287 return btrfs_item_offset(eb
, item
) + btrfs_item_size(eb
, item
);
1290 static inline u32
btrfs_item_end_nr(struct extent_buffer
*eb
, int nr
)
1292 return btrfs_item_end(eb
, btrfs_item_nr(eb
, nr
));
1295 static inline u32
btrfs_item_offset_nr(struct extent_buffer
*eb
, int nr
)
1297 return btrfs_item_offset(eb
, btrfs_item_nr(eb
, nr
));
1300 static inline u32
btrfs_item_size_nr(struct extent_buffer
*eb
, int nr
)
1302 return btrfs_item_size(eb
, btrfs_item_nr(eb
, nr
));
1305 static inline void btrfs_item_key(struct extent_buffer
*eb
,
1306 struct btrfs_disk_key
*disk_key
, int nr
)
1308 struct btrfs_item
*item
= btrfs_item_nr(eb
, nr
);
1309 read_eb_member(eb
, item
, struct btrfs_item
, key
, disk_key
);
1312 static inline void btrfs_set_item_key(struct extent_buffer
*eb
,
1313 struct btrfs_disk_key
*disk_key
, int nr
)
1315 struct btrfs_item
*item
= btrfs_item_nr(eb
, nr
);
1316 write_eb_member(eb
, item
, struct btrfs_item
, key
, disk_key
);
1319 BTRFS_SETGET_FUNCS(dir_log_end
, struct btrfs_dir_log_item
, end
, 64);
1322 * struct btrfs_root_ref
1324 BTRFS_SETGET_FUNCS(root_ref_dirid
, struct btrfs_root_ref
, dirid
, 64);
1325 BTRFS_SETGET_FUNCS(root_ref_sequence
, struct btrfs_root_ref
, sequence
, 64);
1326 BTRFS_SETGET_FUNCS(root_ref_name_len
, struct btrfs_root_ref
, name_len
, 16);
1328 /* struct btrfs_dir_item */
1329 BTRFS_SETGET_FUNCS(dir_data_len
, struct btrfs_dir_item
, data_len
, 16);
1330 BTRFS_SETGET_FUNCS(dir_type
, struct btrfs_dir_item
, type
, 8);
1331 BTRFS_SETGET_FUNCS(dir_name_len
, struct btrfs_dir_item
, name_len
, 16);
1332 BTRFS_SETGET_FUNCS(dir_transid
, struct btrfs_dir_item
, transid
, 64);
1334 static inline void btrfs_dir_item_key(struct extent_buffer
*eb
,
1335 struct btrfs_dir_item
*item
,
1336 struct btrfs_disk_key
*key
)
1338 read_eb_member(eb
, item
, struct btrfs_dir_item
, location
, key
);
1341 static inline void btrfs_set_dir_item_key(struct extent_buffer
*eb
,
1342 struct btrfs_dir_item
*item
,
1343 struct btrfs_disk_key
*key
)
1345 write_eb_member(eb
, item
, struct btrfs_dir_item
, location
, key
);
1348 /* struct btrfs_disk_key */
1349 BTRFS_SETGET_STACK_FUNCS(disk_key_objectid
, struct btrfs_disk_key
,
1351 BTRFS_SETGET_STACK_FUNCS(disk_key_offset
, struct btrfs_disk_key
, offset
, 64);
1352 BTRFS_SETGET_STACK_FUNCS(disk_key_type
, struct btrfs_disk_key
, type
, 8);
1354 static inline void btrfs_disk_key_to_cpu(struct btrfs_key
*cpu
,
1355 struct btrfs_disk_key
*disk
)
1357 cpu
->offset
= le64_to_cpu(disk
->offset
);
1358 cpu
->type
= disk
->type
;
1359 cpu
->objectid
= le64_to_cpu(disk
->objectid
);
1362 static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key
*disk
,
1363 struct btrfs_key
*cpu
)
1365 disk
->offset
= cpu_to_le64(cpu
->offset
);
1366 disk
->type
= cpu
->type
;
1367 disk
->objectid
= cpu_to_le64(cpu
->objectid
);
1370 static inline void btrfs_node_key_to_cpu(struct extent_buffer
*eb
,
1371 struct btrfs_key
*key
, int nr
)
1373 struct btrfs_disk_key disk_key
;
1374 btrfs_node_key(eb
, &disk_key
, nr
);
1375 btrfs_disk_key_to_cpu(key
, &disk_key
);
1378 static inline void btrfs_item_key_to_cpu(struct extent_buffer
*eb
,
1379 struct btrfs_key
*key
, int nr
)
1381 struct btrfs_disk_key disk_key
;
1382 btrfs_item_key(eb
, &disk_key
, nr
);
1383 btrfs_disk_key_to_cpu(key
, &disk_key
);
1386 static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer
*eb
,
1387 struct btrfs_dir_item
*item
,
1388 struct btrfs_key
*key
)
1390 struct btrfs_disk_key disk_key
;
1391 btrfs_dir_item_key(eb
, item
, &disk_key
);
1392 btrfs_disk_key_to_cpu(key
, &disk_key
);
1396 static inline u8
btrfs_key_type(struct btrfs_key
*key
)
1401 static inline void btrfs_set_key_type(struct btrfs_key
*key
, u8 val
)
1406 /* struct btrfs_header */
1407 BTRFS_SETGET_HEADER_FUNCS(header_bytenr
, struct btrfs_header
, bytenr
, 64);
1408 BTRFS_SETGET_HEADER_FUNCS(header_generation
, struct btrfs_header
,
1410 BTRFS_SETGET_HEADER_FUNCS(header_owner
, struct btrfs_header
, owner
, 64);
1411 BTRFS_SETGET_HEADER_FUNCS(header_nritems
, struct btrfs_header
, nritems
, 32);
1412 BTRFS_SETGET_HEADER_FUNCS(header_flags
, struct btrfs_header
, flags
, 64);
1413 BTRFS_SETGET_HEADER_FUNCS(header_level
, struct btrfs_header
, level
, 8);
1415 static inline int btrfs_header_flag(struct extent_buffer
*eb
, u64 flag
)
1417 return (btrfs_header_flags(eb
) & flag
) == flag
;
1420 static inline int btrfs_set_header_flag(struct extent_buffer
*eb
, u64 flag
)
1422 u64 flags
= btrfs_header_flags(eb
);
1423 btrfs_set_header_flags(eb
, flags
| flag
);
1424 return (flags
& flag
) == flag
;
1427 static inline int btrfs_clear_header_flag(struct extent_buffer
*eb
, u64 flag
)
1429 u64 flags
= btrfs_header_flags(eb
);
1430 btrfs_set_header_flags(eb
, flags
& ~flag
);
1431 return (flags
& flag
) == flag
;
1434 static inline int btrfs_header_backref_rev(struct extent_buffer
*eb
)
1436 u64 flags
= btrfs_header_flags(eb
);
1437 return flags
>> BTRFS_BACKREF_REV_SHIFT
;
1440 static inline void btrfs_set_header_backref_rev(struct extent_buffer
*eb
,
1443 u64 flags
= btrfs_header_flags(eb
);
1444 flags
&= ~BTRFS_BACKREF_REV_MASK
;
1445 flags
|= (u64
)rev
<< BTRFS_BACKREF_REV_SHIFT
;
1446 btrfs_set_header_flags(eb
, flags
);
1449 static inline u8
*btrfs_header_fsid(struct extent_buffer
*eb
)
1451 unsigned long ptr
= offsetof(struct btrfs_header
, fsid
);
1455 static inline u8
*btrfs_header_chunk_tree_uuid(struct extent_buffer
*eb
)
1457 unsigned long ptr
= offsetof(struct btrfs_header
, chunk_tree_uuid
);
1461 static inline u8
*btrfs_super_fsid(struct extent_buffer
*eb
)
1463 unsigned long ptr
= offsetof(struct btrfs_super_block
, fsid
);
1467 static inline u8
*btrfs_header_csum(struct extent_buffer
*eb
)
1469 unsigned long ptr
= offsetof(struct btrfs_header
, csum
);
1473 static inline struct btrfs_node
*btrfs_buffer_node(struct extent_buffer
*eb
)
1478 static inline struct btrfs_leaf
*btrfs_buffer_leaf(struct extent_buffer
*eb
)
1483 static inline struct btrfs_header
*btrfs_buffer_header(struct extent_buffer
*eb
)
1488 static inline int btrfs_is_leaf(struct extent_buffer
*eb
)
1490 return (btrfs_header_level(eb
) == 0);
1493 /* struct btrfs_root_item */
1494 BTRFS_SETGET_FUNCS(disk_root_generation
, struct btrfs_root_item
,
1496 BTRFS_SETGET_FUNCS(disk_root_refs
, struct btrfs_root_item
, refs
, 32);
1497 BTRFS_SETGET_FUNCS(disk_root_bytenr
, struct btrfs_root_item
, bytenr
, 64);
1498 BTRFS_SETGET_FUNCS(disk_root_level
, struct btrfs_root_item
, level
, 8);
1500 BTRFS_SETGET_STACK_FUNCS(root_generation
, struct btrfs_root_item
,
1502 BTRFS_SETGET_STACK_FUNCS(root_bytenr
, struct btrfs_root_item
, bytenr
, 64);
1503 BTRFS_SETGET_STACK_FUNCS(root_level
, struct btrfs_root_item
, level
, 8);
1504 BTRFS_SETGET_STACK_FUNCS(root_dirid
, struct btrfs_root_item
, root_dirid
, 64);
1505 BTRFS_SETGET_STACK_FUNCS(root_refs
, struct btrfs_root_item
, refs
, 32);
1506 BTRFS_SETGET_STACK_FUNCS(root_flags
, struct btrfs_root_item
, flags
, 64);
1507 BTRFS_SETGET_STACK_FUNCS(root_used
, struct btrfs_root_item
, bytes_used
, 64);
1508 BTRFS_SETGET_STACK_FUNCS(root_limit
, struct btrfs_root_item
, byte_limit
, 64);
1509 BTRFS_SETGET_STACK_FUNCS(root_last_snapshot
, struct btrfs_root_item
,
1513 /* struct btrfs_super_block */
1515 BTRFS_SETGET_STACK_FUNCS(super_bytenr
, struct btrfs_super_block
, bytenr
, 64);
1516 BTRFS_SETGET_STACK_FUNCS(super_flags
, struct btrfs_super_block
, flags
, 64);
1517 BTRFS_SETGET_STACK_FUNCS(super_generation
, struct btrfs_super_block
,
1519 BTRFS_SETGET_STACK_FUNCS(super_root
, struct btrfs_super_block
, root
, 64);
1520 BTRFS_SETGET_STACK_FUNCS(super_sys_array_size
,
1521 struct btrfs_super_block
, sys_chunk_array_size
, 32);
1522 BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation
,
1523 struct btrfs_super_block
, chunk_root_generation
, 64);
1524 BTRFS_SETGET_STACK_FUNCS(super_root_level
, struct btrfs_super_block
,
1526 BTRFS_SETGET_STACK_FUNCS(super_chunk_root
, struct btrfs_super_block
,
1528 BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level
, struct btrfs_super_block
,
1529 chunk_root_level
, 8);
1530 BTRFS_SETGET_STACK_FUNCS(super_log_root
, struct btrfs_super_block
,
1532 BTRFS_SETGET_STACK_FUNCS(super_log_root_transid
, struct btrfs_super_block
,
1533 log_root_transid
, 64);
1534 BTRFS_SETGET_STACK_FUNCS(super_log_root_level
, struct btrfs_super_block
,
1536 BTRFS_SETGET_STACK_FUNCS(super_total_bytes
, struct btrfs_super_block
,
1538 BTRFS_SETGET_STACK_FUNCS(super_bytes_used
, struct btrfs_super_block
,
1540 BTRFS_SETGET_STACK_FUNCS(super_sectorsize
, struct btrfs_super_block
,
1542 BTRFS_SETGET_STACK_FUNCS(super_nodesize
, struct btrfs_super_block
,
1544 BTRFS_SETGET_STACK_FUNCS(super_leafsize
, struct btrfs_super_block
,
1546 BTRFS_SETGET_STACK_FUNCS(super_stripesize
, struct btrfs_super_block
,
1548 BTRFS_SETGET_STACK_FUNCS(super_root_dir
, struct btrfs_super_block
,
1549 root_dir_objectid
, 64);
1550 BTRFS_SETGET_STACK_FUNCS(super_num_devices
, struct btrfs_super_block
,
1552 BTRFS_SETGET_STACK_FUNCS(super_compat_flags
, struct btrfs_super_block
,
1554 BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags
, struct btrfs_super_block
,
1556 BTRFS_SETGET_STACK_FUNCS(super_incompat_flags
, struct btrfs_super_block
,
1557 incompat_flags
, 64);
1558 BTRFS_SETGET_STACK_FUNCS(super_csum_type
, struct btrfs_super_block
,
1561 static inline int btrfs_super_csum_size(struct btrfs_super_block
*s
)
1563 int t
= btrfs_super_csum_type(s
);
1564 BUG_ON(t
>= ARRAY_SIZE(btrfs_csum_sizes
));
1565 return btrfs_csum_sizes
[t
];
1568 static inline unsigned long btrfs_leaf_data(struct extent_buffer
*l
)
1570 return offsetof(struct btrfs_leaf
, items
);
1573 /* struct btrfs_file_extent_item */
1574 BTRFS_SETGET_FUNCS(file_extent_type
, struct btrfs_file_extent_item
, type
, 8);
1576 static inline unsigned long btrfs_file_extent_inline_start(struct
1577 btrfs_file_extent_item
*e
)
1579 unsigned long offset
= (unsigned long)e
;
1580 offset
+= offsetof(struct btrfs_file_extent_item
, disk_bytenr
);
1584 static inline u32
btrfs_file_extent_calc_inline_size(u32 datasize
)
1586 return offsetof(struct btrfs_file_extent_item
, disk_bytenr
) + datasize
;
1589 BTRFS_SETGET_FUNCS(file_extent_disk_bytenr
, struct btrfs_file_extent_item
,
1591 BTRFS_SETGET_FUNCS(file_extent_generation
, struct btrfs_file_extent_item
,
1593 BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes
, struct btrfs_file_extent_item
,
1594 disk_num_bytes
, 64);
1595 BTRFS_SETGET_FUNCS(file_extent_offset
, struct btrfs_file_extent_item
,
1597 BTRFS_SETGET_FUNCS(file_extent_num_bytes
, struct btrfs_file_extent_item
,
1599 BTRFS_SETGET_FUNCS(file_extent_ram_bytes
, struct btrfs_file_extent_item
,
1601 BTRFS_SETGET_FUNCS(file_extent_compression
, struct btrfs_file_extent_item
,
1603 BTRFS_SETGET_FUNCS(file_extent_encryption
, struct btrfs_file_extent_item
,
1605 BTRFS_SETGET_FUNCS(file_extent_other_encoding
, struct btrfs_file_extent_item
,
1606 other_encoding
, 16);
1608 /* this returns the number of file bytes represented by the inline item.
1609 * If an item is compressed, this is the uncompressed size
1611 static inline u32
btrfs_file_extent_inline_len(struct extent_buffer
*eb
,
1612 struct btrfs_file_extent_item
*e
)
1614 return btrfs_file_extent_ram_bytes(eb
, e
);
1618 * this returns the number of bytes used by the item on disk, minus the
1619 * size of any extent headers. If a file is compressed on disk, this is
1620 * the compressed size
1622 static inline u32
btrfs_file_extent_inline_item_len(struct extent_buffer
*eb
,
1623 struct btrfs_item
*e
)
1625 unsigned long offset
;
1626 offset
= offsetof(struct btrfs_file_extent_item
, disk_bytenr
);
1627 return btrfs_item_size(eb
, e
) - offset
;
1630 static inline u32
btrfs_level_size(struct btrfs_root
*root
, int level
) {
1632 return root
->leafsize
;
1633 return root
->nodesize
;
1636 /* helper function to cast into the data area of the leaf. */
1637 #define btrfs_item_ptr(leaf, slot, type) \
1638 ((type *)(btrfs_leaf_data(leaf) + \
1639 btrfs_item_offset_nr(leaf, slot)))
1641 #define btrfs_item_ptr_offset(leaf, slot) \
1642 ((unsigned long)(btrfs_leaf_data(leaf) + \
1643 btrfs_item_offset_nr(leaf, slot)))
1646 int btrfs_extent_post_op(struct btrfs_trans_handle
*trans
,
1647 struct btrfs_root
*root
);
1648 int btrfs_copy_pinned(struct btrfs_root
*root
, struct extent_io_tree
*copy
);
1649 struct btrfs_block_group_cache
*btrfs_lookup_block_group(struct
1650 btrfs_fs_info
*info
,
1652 struct btrfs_block_group_cache
*btrfs_find_block_group(struct btrfs_root
*root
,
1653 struct btrfs_block_group_cache
1654 *hint
, u64 search_start
,
1655 int data
, int owner
);
1656 struct extent_buffer
*btrfs_alloc_free_block(struct btrfs_trans_handle
*trans
,
1657 struct btrfs_root
*root
,
1658 u32 blocksize
, u64 root_objectid
,
1659 struct btrfs_disk_key
*key
, int level
,
1660 u64 hint
, u64 empty_size
);
1661 int btrfs_alloc_extent(struct btrfs_trans_handle
*trans
,
1662 struct btrfs_root
*root
,
1663 u64 num_bytes
, u64 parent
,
1664 u64 root_objectid
, u64 ref_generation
,
1665 u64 owner
, u64 empty_size
, u64 hint_byte
,
1666 u64 search_end
, struct btrfs_key
*ins
, int data
);
1667 int btrfs_lookup_extent_info(struct btrfs_trans_handle
*trans
,
1668 struct btrfs_root
*root
, u64 bytenr
,
1669 u64 num_bytes
, u64
*refs
, u64
*flags
);
1670 int btrfs_set_block_flags(struct btrfs_trans_handle
*trans
,
1671 struct btrfs_root
*root
,
1672 u64 bytenr
, u64 num_bytes
, u64 flags
);
1673 int btrfs_inc_ref(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1674 struct extent_buffer
*buf
, int record_parent
);
1675 int btrfs_dec_ref(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1676 struct extent_buffer
*buf
, int record_parent
);
1677 int btrfs_free_extent(struct btrfs_trans_handle
*trans
,
1678 struct btrfs_root
*root
,
1679 u64 bytenr
, u64 num_bytes
, u64 parent
,
1680 u64 root_objectid
, u64 owner
, u64 offset
);
1681 int btrfs_finish_extent_commit(struct btrfs_trans_handle
*trans
,
1682 struct btrfs_root
*root
,
1683 struct extent_io_tree
*unpin
);
1684 int btrfs_inc_extent_ref(struct btrfs_trans_handle
*trans
,
1685 struct btrfs_root
*root
,
1686 u64 bytenr
, u64 num_bytes
, u64 parent
,
1687 u64 root_objectid
, u64 ref_generation
,
1688 u64 owner_objectid
);
1689 int btrfs_update_extent_ref(struct btrfs_trans_handle
*trans
,
1690 struct btrfs_root
*root
, u64 bytenr
,
1691 u64 orig_parent
, u64 parent
,
1692 u64 root_objectid
, u64 ref_generation
,
1693 u64 owner_objectid
);
1694 int btrfs_write_dirty_block_groups(struct btrfs_trans_handle
*trans
,
1695 struct btrfs_root
*root
);
1696 int btrfs_free_block_groups(struct btrfs_fs_info
*info
);
1697 int btrfs_read_block_groups(struct btrfs_root
*root
);
1698 int btrfs_make_block_group(struct btrfs_trans_handle
*trans
,
1699 struct btrfs_root
*root
, u64 bytes_used
,
1700 u64 type
, u64 chunk_objectid
, u64 chunk_offset
,
1702 int btrfs_make_block_groups(struct btrfs_trans_handle
*trans
,
1703 struct btrfs_root
*root
);
1704 int btrfs_update_block_group(struct btrfs_trans_handle
*trans
,
1705 struct btrfs_root
*root
, u64 bytenr
, u64 num
,
1706 int alloc
, int mark_free
);
1708 int btrfs_previous_item(struct btrfs_root
*root
,
1709 struct btrfs_path
*path
, u64 min_objectid
,
1711 int btrfs_comp_keys(struct btrfs_disk_key
*disk
, struct btrfs_key
*k2
);
1712 int btrfs_cow_block(struct btrfs_trans_handle
*trans
,
1713 struct btrfs_root
*root
, struct extent_buffer
*buf
,
1714 struct extent_buffer
*parent
, int parent_slot
,
1715 struct extent_buffer
**cow_ret
);
1716 int __btrfs_cow_block(struct btrfs_trans_handle
*trans
,
1717 struct btrfs_root
*root
,
1718 struct extent_buffer
*buf
,
1719 struct extent_buffer
*parent
, int parent_slot
,
1720 struct extent_buffer
**cow_ret
,
1721 u64 search_start
, u64 empty_size
);
1722 int btrfs_copy_root(struct btrfs_trans_handle
*trans
,
1723 struct btrfs_root
*root
,
1724 struct extent_buffer
*buf
,
1725 struct extent_buffer
**cow_ret
, u64 new_root_objectid
);
1726 int btrfs_extend_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
1727 *root
, struct btrfs_path
*path
, u32 data_size
);
1728 int btrfs_truncate_item(struct btrfs_trans_handle
*trans
,
1729 struct btrfs_root
*root
,
1730 struct btrfs_path
*path
,
1731 u32 new_size
, int from_end
);
1732 int btrfs_split_item(struct btrfs_trans_handle
*trans
,
1733 struct btrfs_root
*root
,
1734 struct btrfs_path
*path
,
1735 struct btrfs_key
*new_key
,
1736 unsigned long split_offset
);
1737 int btrfs_search_slot(struct btrfs_trans_handle
*trans
, struct btrfs_root
1738 *root
, struct btrfs_key
*key
, struct btrfs_path
*p
, int
1740 int btrfs_realloc_node(struct btrfs_trans_handle
*trans
,
1741 struct btrfs_root
*root
, struct extent_buffer
*parent
,
1742 int start_slot
, int cache_only
, u64
*last_ret
,
1743 struct btrfs_key
*progress
);
1744 void btrfs_release_path(struct btrfs_root
*root
, struct btrfs_path
*p
);
1745 struct btrfs_path
*btrfs_alloc_path(void);
1746 void btrfs_free_path(struct btrfs_path
*p
);
1747 void btrfs_init_path(struct btrfs_path
*p
);
1748 int btrfs_del_items(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1749 struct btrfs_path
*path
, int slot
, int nr
);
1751 static inline int btrfs_del_item(struct btrfs_trans_handle
*trans
,
1752 struct btrfs_root
*root
,
1753 struct btrfs_path
*path
)
1755 return btrfs_del_items(trans
, root
, path
, path
->slots
[0], 1);
1758 int btrfs_insert_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
1759 *root
, struct btrfs_key
*key
, void *data
, u32 data_size
);
1760 int btrfs_insert_empty_items(struct btrfs_trans_handle
*trans
,
1761 struct btrfs_root
*root
,
1762 struct btrfs_path
*path
,
1763 struct btrfs_key
*cpu_key
, u32
*data_size
, int nr
);
1765 static inline int btrfs_insert_empty_item(struct btrfs_trans_handle
*trans
,
1766 struct btrfs_root
*root
,
1767 struct btrfs_path
*path
,
1768 struct btrfs_key
*key
,
1771 return btrfs_insert_empty_items(trans
, root
, path
, key
, &data_size
, 1);
1774 int btrfs_next_leaf(struct btrfs_root
*root
, struct btrfs_path
*path
);
1775 int btrfs_prev_leaf(struct btrfs_root
*root
, struct btrfs_path
*path
);
1776 int btrfs_leaf_free_space(struct btrfs_root
*root
, struct extent_buffer
*leaf
);
1777 int btrfs_drop_snapshot(struct btrfs_trans_handle
*trans
, struct btrfs_root
1779 int btrfs_set_item_key_safe(struct btrfs_trans_handle
*trans
,
1780 struct btrfs_root
*root
, struct btrfs_path
*path
,
1781 struct btrfs_key
*new_key
);
1784 int btrfs_add_root_ref(struct btrfs_trans_handle
*trans
,
1785 struct btrfs_root
*tree_root
,
1786 u64 root_id
, u8 type
, u64 ref_id
,
1787 u64 dirid
, u64 sequence
,
1788 const char *name
, int name_len
);
1789 int btrfs_del_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
1790 struct btrfs_key
*key
);
1791 int btrfs_insert_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
1792 *root
, struct btrfs_key
*key
, struct btrfs_root_item
1794 int btrfs_update_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
1795 *root
, struct btrfs_key
*key
, struct btrfs_root_item
1797 int btrfs_find_last_root(struct btrfs_root
*root
, u64 objectid
, struct
1798 btrfs_root_item
*item
, struct btrfs_key
*key
);
1799 int btrfs_find_dead_roots(struct btrfs_root
*root
, u64 objectid
,
1800 struct btrfs_root
*latest_root
);
1802 int btrfs_insert_dir_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
1803 *root
, const char *name
, int name_len
, u64 dir
,
1804 struct btrfs_key
*location
, u8 type
, u64 index
);
1805 struct btrfs_dir_item
*btrfs_lookup_dir_item(struct btrfs_trans_handle
*trans
,
1806 struct btrfs_root
*root
,
1807 struct btrfs_path
*path
, u64 dir
,
1808 const char *name
, int name_len
,
1810 struct btrfs_dir_item
*
1811 btrfs_lookup_dir_index_item(struct btrfs_trans_handle
*trans
,
1812 struct btrfs_root
*root
,
1813 struct btrfs_path
*path
, u64 dir
,
1814 u64 objectid
, const char *name
, int name_len
,
1816 struct btrfs_dir_item
*btrfs_match_dir_item_name(struct btrfs_root
*root
,
1817 struct btrfs_path
*path
,
1818 const char *name
, int name_len
);
1819 int btrfs_delete_one_dir_name(struct btrfs_trans_handle
*trans
,
1820 struct btrfs_root
*root
,
1821 struct btrfs_path
*path
,
1822 struct btrfs_dir_item
*di
);
1823 int btrfs_insert_xattr_item(struct btrfs_trans_handle
*trans
,
1824 struct btrfs_root
*root
, const char *name
,
1825 u16 name_len
, const void *data
, u16 data_len
,
1827 struct btrfs_dir_item
*btrfs_lookup_xattr(struct btrfs_trans_handle
*trans
,
1828 struct btrfs_root
*root
,
1829 struct btrfs_path
*path
, u64 dir
,
1830 const char *name
, u16 name_len
,
1833 int btrfs_find_free_objectid(struct btrfs_trans_handle
*trans
,
1834 struct btrfs_root
*fs_root
,
1835 u64 dirid
, u64
*objectid
);
1836 int btrfs_find_highest_inode(struct btrfs_root
*fs_root
, u64
*objectid
);
1839 int btrfs_insert_inode_ref(struct btrfs_trans_handle
*trans
,
1840 struct btrfs_root
*root
,
1841 const char *name
, int name_len
,
1842 u64 inode_objectid
, u64 ref_objectid
, u64 index
);
1843 int btrfs_del_inode_ref(struct btrfs_trans_handle
*trans
,
1844 struct btrfs_root
*root
,
1845 const char *name
, int name_len
,
1846 u64 inode_objectid
, u64 ref_objectid
);
1847 int btrfs_insert_empty_inode(struct btrfs_trans_handle
*trans
,
1848 struct btrfs_root
*root
,
1849 struct btrfs_path
*path
, u64 objectid
);
1850 int btrfs_insert_inode(struct btrfs_trans_handle
*trans
, struct btrfs_root
1851 *root
, u64 objectid
, struct btrfs_inode_item
1853 int btrfs_lookup_inode(struct btrfs_trans_handle
*trans
, struct btrfs_root
1854 *root
, struct btrfs_path
*path
,
1855 struct btrfs_key
*location
, int mod
);
1858 int btrfs_del_csums(struct btrfs_trans_handle
*trans
,
1859 struct btrfs_root
*root
, u64 bytenr
, u64 len
);
1860 int btrfs_insert_file_extent(struct btrfs_trans_handle
*trans
,
1861 struct btrfs_root
*root
,
1862 u64 objectid
, u64 pos
, u64 offset
,
1865 int btrfs_insert_inline_extent(struct btrfs_trans_handle
*trans
,
1866 struct btrfs_root
*root
, u64 objectid
,
1867 u64 offset
, char *buffer
, size_t size
);
1868 int btrfs_lookup_file_extent(struct btrfs_trans_handle
*trans
,
1869 struct btrfs_root
*root
,
1870 struct btrfs_path
*path
, u64 objectid
,
1871 u64 bytenr
, int mod
);
1872 int btrfs_csum_file_block(struct btrfs_trans_handle
*trans
,
1873 struct btrfs_root
*root
, u64 alloc_end
,
1874 u64 bytenr
, char *data
, size_t len
);
1875 struct btrfs_csum_item
*btrfs_lookup_csum(struct btrfs_trans_handle
*trans
,
1876 struct btrfs_root
*root
,
1877 struct btrfs_path
*path
,
1878 u64 bytenr
, int cow
);
1879 int btrfs_csum_truncate(struct btrfs_trans_handle
*trans
,
1880 struct btrfs_root
*root
, struct btrfs_path
*path
,