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.
22 #if BTRFS_FLAT_INCLUDES
24 #include "kerncompat.h"
25 #include "radix-tree.h"
26 #include "extent-cache.h"
27 #include "extent_io.h"
30 #include <btrfs/list.h>
31 #include <btrfs/kerncompat.h>
32 #include <btrfs/radix-tree.h>
33 #include <btrfs/extent-cache.h>
34 #include <btrfs/extent_io.h>
35 #include <btrfs/ioctl.h>
36 #endif /* BTRFS_FLAT_INCLUDES */
39 struct btrfs_trans_handle
;
40 struct btrfs_free_space_ctl
;
41 #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */
43 #define BTRFS_MAX_LEVEL 8
45 #define BTRFS_COMPAT_EXTENT_TREE_V0
47 /* holds pointers to all of the tree roots */
48 #define BTRFS_ROOT_TREE_OBJECTID 1ULL
50 /* stores information about which extents are in use, and reference counts */
51 #define BTRFS_EXTENT_TREE_OBJECTID 2ULL
54 * chunk tree stores translations from logical -> physical block numbering
55 * the super block points to the chunk tree
57 #define BTRFS_CHUNK_TREE_OBJECTID 3ULL
60 * stores information about which areas of a given device are in use.
61 * one per device. The tree of tree roots points to the device tree
63 #define BTRFS_DEV_TREE_OBJECTID 4ULL
65 /* one per subvolume, storing files and directories */
66 #define BTRFS_FS_TREE_OBJECTID 5ULL
68 /* directory objectid inside the root tree */
69 #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL
70 /* holds checksums of all the data extents */
71 #define BTRFS_CSUM_TREE_OBJECTID 7ULL
72 #define BTRFS_QUOTA_TREE_OBJECTID 8ULL
74 /* for storing items that use the BTRFS_UUID_KEY* */
75 #define BTRFS_UUID_TREE_OBJECTID 9ULL
77 /* for storing balance parameters in the root tree */
78 #define BTRFS_BALANCE_OBJECTID -4ULL
80 /* oprhan objectid for tracking unlinked/truncated files */
81 #define BTRFS_ORPHAN_OBJECTID -5ULL
83 /* does write ahead logging to speed up fsyncs */
84 #define BTRFS_TREE_LOG_OBJECTID -6ULL
85 #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL
88 #define BTRFS_TREE_RELOC_OBJECTID -8ULL
89 #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL
92 * extent checksums all have this objectid
93 * this allows them to share the logging tree
96 #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL
98 /* For storing free space cache */
99 #define BTRFS_FREE_SPACE_OBJECTID -11ULL
102 * The inode number assigned to the special inode for sotring
105 #define BTRFS_FREE_INO_OBJECTID -12ULL
107 /* dummy objectid represents multiple objectids */
108 #define BTRFS_MULTIPLE_OBJECTIDS -255ULL
111 * All files have objectids in this range.
113 #define BTRFS_FIRST_FREE_OBJECTID 256ULL
114 #define BTRFS_LAST_FREE_OBJECTID -256ULL
115 #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL
120 * the device items go into the chunk tree. The key is in the form
121 * [ 1 BTRFS_DEV_ITEM_KEY device_id ]
123 #define BTRFS_DEV_ITEMS_OBJECTID 1ULL
126 * the max metadata block size. This limit is somewhat artificial,
127 * but the memmove costs go through the roof for larger blocks.
129 #define BTRFS_MAX_METADATA_BLOCKSIZE 65536
132 * we can actually store much bigger names, but lets not confuse the rest
135 #define BTRFS_NAME_LEN 255
138 * Theoretical limit is larger, but we keep this down to a sane
139 * value. That should limit greatly the possibility of collisions on
142 #define BTRFS_LINK_MAX 65535U
144 /* 32 bytes in various csum fields */
145 #define BTRFS_CSUM_SIZE 32
148 #define BTRFS_CSUM_TYPE_CRC32 0
150 static int btrfs_csum_sizes
[] = { 4, 0 };
152 /* four bytes for CRC32 */
153 #define BTRFS_CRC32_SIZE 4
154 #define BTRFS_EMPTY_DIR_SIZE 0
156 #define BTRFS_FT_UNKNOWN 0
157 #define BTRFS_FT_REG_FILE 1
158 #define BTRFS_FT_DIR 2
159 #define BTRFS_FT_CHRDEV 3
160 #define BTRFS_FT_BLKDEV 4
161 #define BTRFS_FT_FIFO 5
162 #define BTRFS_FT_SOCK 6
163 #define BTRFS_FT_SYMLINK 7
164 #define BTRFS_FT_XATTR 8
165 #define BTRFS_FT_MAX 9
167 #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0)
170 * the key defines the order in the tree, and so it also defines (optimal)
171 * block layout. objectid corresonds to the inode number. The flags
172 * tells us things about the object, and is a kind of stream selector.
173 * so for a given inode, keys with flags of 1 might refer to the inode
174 * data, flags of 2 may point to file data in the btree and flags == 3
175 * may point to extents.
177 * offset is the starting byte offset for this key in the stream.
179 * btrfs_disk_key is in disk byte order. struct btrfs_key is always
180 * in cpu native order. Otherwise they are identical and their sizes
181 * should be the same (ie both packed)
183 struct btrfs_disk_key
{
187 } __attribute__ ((__packed__
));
193 } __attribute__ ((__packed__
));
195 struct btrfs_mapping_tree
{
196 struct cache_tree cache_tree
;
199 #define BTRFS_UUID_SIZE 16
200 struct btrfs_dev_item
{
201 /* the internal btrfs device id */
204 /* size of the device */
210 /* optimal io alignment for this device */
213 /* optimal io width for this device */
216 /* minimal io size for this device */
219 /* type and info about this device */
222 /* expected generation for this device */
226 * starting byte of this partition on the device,
227 * to allowr for stripe alignment in the future
231 /* grouping information for allocation decisions */
234 /* seek speed 0-100 where 100 is fastest */
237 /* bandwidth 0-100 where 100 is fastest */
240 /* btrfs generated uuid for this device */
241 u8 uuid
[BTRFS_UUID_SIZE
];
243 /* uuid of FS who owns this device */
244 u8 fsid
[BTRFS_UUID_SIZE
];
245 } __attribute__ ((__packed__
));
247 struct btrfs_stripe
{
250 u8 dev_uuid
[BTRFS_UUID_SIZE
];
251 } __attribute__ ((__packed__
));
254 /* size of this chunk in bytes */
257 /* objectid of the root referencing this chunk */
263 /* optimal io alignment for this chunk */
266 /* optimal io width for this chunk */
269 /* minimal io size for this chunk */
272 /* 2^16 stripes is quite a lot, a second limit is the size of a single
277 /* sub stripes only matter for raid10 */
279 struct btrfs_stripe stripe
;
280 /* additional stripes go here */
281 } __attribute__ ((__packed__
));
283 #define BTRFS_FREE_SPACE_EXTENT 1
284 #define BTRFS_FREE_SPACE_BITMAP 2
286 struct btrfs_free_space_entry
{
290 } __attribute__ ((__packed__
));
292 struct btrfs_free_space_header
{
293 struct btrfs_disk_key location
;
297 } __attribute__ ((__packed__
));
299 static inline unsigned long btrfs_chunk_item_size(int num_stripes
)
301 BUG_ON(num_stripes
== 0);
302 return sizeof(struct btrfs_chunk
) +
303 sizeof(struct btrfs_stripe
) * (num_stripes
- 1);
306 #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0)
307 #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1)
308 #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32)
309 #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33)
311 #define BTRFS_BACKREF_REV_MAX 256
312 #define BTRFS_BACKREF_REV_SHIFT 56
313 #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \
314 BTRFS_BACKREF_REV_SHIFT)
316 #define BTRFS_OLD_BACKREF_REV 0
317 #define BTRFS_MIXED_BACKREF_REV 1
320 * every tree block (leaf or node) starts with this header.
322 struct btrfs_header
{
323 /* these first four must match the super block */
324 u8 csum
[BTRFS_CSUM_SIZE
];
325 u8 fsid
[BTRFS_FSID_SIZE
]; /* FS specific uuid */
326 __le64 bytenr
; /* which block this node is supposed to live in */
329 /* allowed to be different from the super from here on down */
330 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
335 } __attribute__ ((__packed__
));
337 #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \
338 sizeof(struct btrfs_header)) / \
339 sizeof(struct btrfs_key_ptr))
340 #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header))
341 #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize))
342 #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \
343 sizeof(struct btrfs_item) - \
344 sizeof(struct btrfs_file_extent_item))
345 #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \
346 sizeof(struct btrfs_item) -\
347 sizeof(struct btrfs_dir_item))
351 * this is a very generous portion of the super block, giving us
352 * room to translate 14 chunks with 3 stripes each.
354 #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048
355 #define BTRFS_LABEL_SIZE 256
358 * just in case we somehow lose the roots and are not able to mount,
359 * we store an array of the roots from previous transactions
362 #define BTRFS_NUM_BACKUP_ROOTS 4
363 struct btrfs_root_backup
{
365 __le64 tree_root_gen
;
368 __le64 chunk_root_gen
;
371 __le64 extent_root_gen
;
380 __le64 csum_root_gen
;
390 u8 extent_root_level
;
394 /* future and to align */
396 } __attribute__ ((__packed__
));
399 * the super block basically lists the main trees of the FS
400 * it currently lacks any block count etc etc
402 struct btrfs_super_block
{
403 u8 csum
[BTRFS_CSUM_SIZE
];
404 /* the first 3 fields must match struct btrfs_header */
405 u8 fsid
[BTRFS_FSID_SIZE
]; /* FS specific uuid */
406 __le64 bytenr
; /* this block number */
409 /* allowed to be different from the btrfs_header from here own down */
416 /* this will help find the new super based on the log root */
417 __le64 log_root_transid
;
420 __le64 root_dir_objectid
;
426 __le32 sys_chunk_array_size
;
427 __le64 chunk_root_generation
;
429 __le64 compat_ro_flags
;
430 __le64 incompat_flags
;
435 struct btrfs_dev_item dev_item
;
437 char label
[BTRFS_LABEL_SIZE
];
439 __le64 cache_generation
;
440 __le64 uuid_tree_generation
;
442 /* future expansion */
444 u8 sys_chunk_array
[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE
];
445 struct btrfs_root_backup super_roots
[BTRFS_NUM_BACKUP_ROOTS
];
446 } __attribute__ ((__packed__
));
449 * Compat flags that we support. If any incompat flags are set other than the
450 * ones specified below then we will fail to mount
452 #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0)
453 #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1)
454 #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2)
455 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3)
458 * some patches floated around with a second compression method
459 * lets save that incompat here for when they do get in
460 * Note we don't actually support it, we're just reserving the
463 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4)
466 * older kernels tried to do bigger metadata blocks, but the
467 * code was pretty buggy. Lets not let them try anymore.
469 #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5)
470 #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6)
471 #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7)
472 #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8)
473 #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9)
476 #define BTRFS_FEATURE_COMPAT_SUPP 0ULL
477 #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL
478 #define BTRFS_FEATURE_INCOMPAT_SUPP \
479 (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \
480 BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \
481 BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \
482 BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \
483 BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \
484 BTRFS_FEATURE_INCOMPAT_RAID56 | \
485 BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \
486 BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \
487 BTRFS_FEATURE_INCOMPAT_NO_HOLES)
490 * A leaf is full of items. offset and size tell us where to find
491 * the item in the leaf (relative to the start of the data area)
494 struct btrfs_disk_key key
;
497 } __attribute__ ((__packed__
));
500 * leaves have an item area and a data area:
501 * [item0, item1....itemN] [free space] [dataN...data1, data0]
503 * The data is separate from the items to get the keys closer together
507 struct btrfs_header header
;
508 struct btrfs_item items
[];
509 } __attribute__ ((__packed__
));
512 * all non-leaf blocks are nodes, they hold only keys and pointers to
515 struct btrfs_key_ptr
{
516 struct btrfs_disk_key key
;
519 } __attribute__ ((__packed__
));
522 struct btrfs_header header
;
523 struct btrfs_key_ptr ptrs
[];
524 } __attribute__ ((__packed__
));
527 * btrfs_paths remember the path taken from the root down to the leaf.
528 * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point
529 * to any other levels that are present.
531 * The slots array records the index of the item or block pointer
532 * used while walking the tree.
536 struct extent_buffer
*nodes
[BTRFS_MAX_LEVEL
];
537 int slots
[BTRFS_MAX_LEVEL
];
538 /* if there is real range locking, this locks field will change */
539 int locks
[BTRFS_MAX_LEVEL
];
541 /* keep some upper locks as we walk down */
545 * set by btrfs_split_item, tells search_slot to keep all locks
546 * and to force calls to keep space in the nodes
548 unsigned int search_for_split
:1;
549 unsigned int keep_locks
:1;
550 unsigned int skip_locking
:1;
551 unsigned int leave_spinning
:1;
552 unsigned int skip_check_block
:1;
556 * items in the extent btree are used to record the objectid of the
557 * owner of the block and the number of references
560 struct btrfs_extent_item
{
564 } __attribute__ ((__packed__
));
566 struct btrfs_extent_item_v0
{
568 } __attribute__ ((__packed__
));
570 #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \
571 sizeof(struct btrfs_item))
573 #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0)
574 #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1)
576 /* following flags only apply to tree blocks */
578 /* use full backrefs for extent pointers in the block*/
579 #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8)
581 struct btrfs_tree_block_info
{
582 struct btrfs_disk_key key
;
584 } __attribute__ ((__packed__
));
586 struct btrfs_extent_data_ref
{
591 } __attribute__ ((__packed__
));
593 struct btrfs_shared_data_ref
{
595 } __attribute__ ((__packed__
));
597 struct btrfs_extent_inline_ref
{
600 } __attribute__ ((__packed__
));
602 struct btrfs_extent_ref_v0
{
607 } __attribute__ ((__packed__
));
609 /* dev extents record free space on individual devices. The owner
610 * field points back to the chunk allocation mapping tree that allocated
611 * the extent. The chunk tree uuid field is a way to double check the owner
613 struct btrfs_dev_extent
{
615 __le64 chunk_objectid
;
618 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
619 } __attribute__ ((__packed__
));
621 struct btrfs_inode_ref
{
625 } __attribute__ ((__packed__
));
627 struct btrfs_inode_extref
{
628 __le64 parent_objectid
;
631 __u8 name
[0]; /* name goes here */
632 } __attribute__ ((__packed__
));
634 struct btrfs_timespec
{
637 } __attribute__ ((__packed__
));
640 BTRFS_COMPRESS_NONE
= 0,
641 BTRFS_COMPRESS_ZLIB
= 1,
642 BTRFS_COMPRESS_LZO
= 2,
643 BTRFS_COMPRESS_TYPES
= 2,
644 BTRFS_COMPRESS_LAST
= 3,
645 } btrfs_compression_type
;
647 /* we don't understand any encryption methods right now */
649 BTRFS_ENCRYPTION_NONE
= 0,
650 BTRFS_ENCRYPTION_LAST
= 1,
651 } btrfs_encryption_type
;
653 enum btrfs_tree_block_status
{
654 BTRFS_TREE_BLOCK_CLEAN
,
655 BTRFS_TREE_BLOCK_INVALID_NRITEMS
,
656 BTRFS_TREE_BLOCK_INVALID_PARENT_KEY
,
657 BTRFS_TREE_BLOCK_BAD_KEY_ORDER
,
658 BTRFS_TREE_BLOCK_INVALID_LEVEL
,
659 BTRFS_TREE_BLOCK_INVALID_FREE_SPACE
,
660 BTRFS_TREE_BLOCK_INVALID_OFFSETS
,
663 struct btrfs_inode_item
{
664 /* nfs style generation number */
666 /* transid that last touched this inode */
678 /* modification sequence number for NFS */
682 * a little future expansion, for more than this we can
683 * just grow the inode item and version it
686 struct btrfs_timespec atime
;
687 struct btrfs_timespec ctime
;
688 struct btrfs_timespec mtime
;
689 struct btrfs_timespec otime
;
690 } __attribute__ ((__packed__
));
692 struct btrfs_dir_log_item
{
694 } __attribute__ ((__packed__
));
696 struct btrfs_dir_item
{
697 struct btrfs_disk_key location
;
702 } __attribute__ ((__packed__
));
704 struct btrfs_root_item_v0
{
705 struct btrfs_inode_item inode
;
711 __le64 last_snapshot
;
714 struct btrfs_disk_key drop_progress
;
717 } __attribute__ ((__packed__
));
719 struct btrfs_root_item
{
720 struct btrfs_inode_item inode
;
726 __le64 last_snapshot
;
729 struct btrfs_disk_key drop_progress
;
734 * The following fields appear after subvol_uuids+subvol_times
739 * This generation number is used to test if the new fields are valid
740 * and up to date while reading the root item. Everytime the root item
741 * is written out, the "generation" field is copied into this field. If
742 * anyone ever mounted the fs with an older kernel, we will have
743 * mismatching generation values here and thus must invalidate the
744 * new fields. See btrfs_update_root and btrfs_find_last_root for
746 * the offset of generation_v2 is also used as the start for the memset
747 * when invalidating the fields.
749 __le64 generation_v2
;
750 u8 uuid
[BTRFS_UUID_SIZE
];
751 u8 parent_uuid
[BTRFS_UUID_SIZE
];
752 u8 received_uuid
[BTRFS_UUID_SIZE
];
753 __le64 ctransid
; /* updated when an inode changes */
754 __le64 otransid
; /* trans when created */
755 __le64 stransid
; /* trans when sent. non-zero for received subvol */
756 __le64 rtransid
; /* trans when received. non-zero for received subvol */
757 struct btrfs_timespec ctime
;
758 struct btrfs_timespec otime
;
759 struct btrfs_timespec stime
;
760 struct btrfs_timespec rtime
;
761 __le64 reserved
[8]; /* for future */
762 } __attribute__ ((__packed__
));
765 * this is used for both forward and backward root refs
767 struct btrfs_root_ref
{
771 } __attribute__ ((__packed__
));
773 #define BTRFS_FILE_EXTENT_INLINE 0
774 #define BTRFS_FILE_EXTENT_REG 1
775 #define BTRFS_FILE_EXTENT_PREALLOC 2
777 struct btrfs_file_extent_item
{
779 * transaction id that created this extent
783 * max number of bytes to hold this extent in ram
784 * when we split a compressed extent we can't know how big
785 * each of the resulting pieces will be. So, this is
786 * an upper limit on the size of the extent in ram instead of
792 * 32 bits for the various ways we might encode the data,
793 * including compression and encryption. If any of these
794 * are set to something a given disk format doesn't understand
795 * it is treated like an incompat flag for reading and writing,
800 __le16 other_encoding
; /* spare for later use */
802 /* are we inline data or a real extent? */
806 * disk space consumed by the extent, checksum blocks are included
810 __le64 disk_num_bytes
;
812 * the logical offset in file blocks (no csums)
813 * this extent record is for. This allows a file extent to point
814 * into the middle of an existing extent on disk, sharing it
815 * between two snapshots (useful if some bytes in the middle of the
816 * extent have changed
820 * the logical number of file blocks (no csums included)
824 } __attribute__ ((__packed__
));
826 struct btrfs_csum_item
{
828 } __attribute__ ((__packed__
));
831 * We don't want to overwrite 1M at the beginning of device, even though
832 * there is our 1st superblock at 64k. Some possible reasons:
833 * - the first 64k blank is useful for some boot loader/manager
834 * - the first 1M could be scratched by buggy partitioner or somesuch
836 #define BTRFS_BLOCK_RESERVED_1M_FOR_SUPER ((u64)1024 * 1024)
838 /* tag for the radix tree of block groups in ram */
839 #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0)
840 #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1)
841 #define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2)
842 #define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3)
843 #define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4)
844 #define BTRFS_BLOCK_GROUP_DUP (1ULL << 5)
845 #define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6)
846 #define BTRFS_BLOCK_GROUP_RAID5 (1ULL << 7)
847 #define BTRFS_BLOCK_GROUP_RAID6 (1ULL << 8)
848 #define BTRFS_BLOCK_GROUP_RESERVED BTRFS_AVAIL_ALLOC_BIT_SINGLE
850 #define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \
851 BTRFS_BLOCK_GROUP_SYSTEM | \
852 BTRFS_BLOCK_GROUP_METADATA)
854 #define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \
855 BTRFS_BLOCK_GROUP_RAID1 | \
856 BTRFS_BLOCK_GROUP_RAID5 | \
857 BTRFS_BLOCK_GROUP_RAID6 | \
858 BTRFS_BLOCK_GROUP_DUP | \
859 BTRFS_BLOCK_GROUP_RAID10)
861 /* used in struct btrfs_balance_args fields */
862 #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48)
864 #define BTRFS_QGROUP_STATUS_OFF 0
865 #define BTRFS_QGROUP_STATUS_ON 1
866 #define BTRFS_QGROUP_STATUS_SCANNING 2
868 #define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1 << 0)
870 struct btrfs_qgroup_status_item
{
874 __le64 scan
; /* progress during scanning */
875 } __attribute__ ((__packed__
));
877 struct btrfs_block_group_item
{
879 __le64 chunk_objectid
;
881 } __attribute__ ((__packed__
));
883 struct btrfs_qgroup_info_item
{
886 __le64 referenced_compressed
;
888 __le64 exclusive_compressed
;
889 } __attribute__ ((__packed__
));
891 /* flags definition for qgroup limits */
892 #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0)
893 #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1)
894 #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2)
895 #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3)
896 #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4)
897 #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5)
899 struct btrfs_qgroup_limit_item
{
901 __le64 max_referenced
;
902 __le64 max_exclusive
;
903 __le64 rsv_referenced
;
904 __le64 rsv_exclusive
;
905 } __attribute__ ((__packed__
));
907 struct btrfs_space_info
{
913 struct list_head list
;
916 struct btrfs_block_group_cache
{
917 struct cache_extent cache
;
918 struct btrfs_key key
;
919 struct btrfs_block_group_item item
;
920 struct btrfs_space_info
*space_info
;
921 struct btrfs_free_space_ctl
*free_space_ctl
;
928 struct btrfs_extent_ops
{
929 int (*alloc_extent
)(struct btrfs_root
*root
, u64 num_bytes
,
930 u64 hint_byte
, struct btrfs_key
*ins
);
931 int (*free_extent
)(struct btrfs_root
*root
, u64 bytenr
,
936 struct btrfs_fs_devices
;
937 struct btrfs_fs_info
{
938 u8 fsid
[BTRFS_FSID_SIZE
];
939 u8 chunk_tree_uuid
[BTRFS_UUID_SIZE
];
940 struct btrfs_root
*fs_root
;
941 struct btrfs_root
*extent_root
;
942 struct btrfs_root
*tree_root
;
943 struct btrfs_root
*chunk_root
;
944 struct btrfs_root
*dev_root
;
945 struct btrfs_root
*csum_root
;
947 struct rb_root fs_root_tree
;
949 /* the log root tree is a directory of all the other log roots */
950 struct btrfs_root
*log_root_tree
;
952 struct extent_io_tree extent_cache
;
953 struct extent_io_tree free_space_cache
;
954 struct extent_io_tree block_group_cache
;
955 struct extent_io_tree pinned_extents
;
956 struct extent_io_tree pending_del
;
957 struct extent_io_tree extent_ins
;
959 /* logical->physical extent mapping */
960 struct btrfs_mapping_tree mapping_tree
;
963 u64 last_trans_committed
;
965 u64 avail_data_alloc_bits
;
966 u64 avail_metadata_alloc_bits
;
967 u64 avail_system_alloc_bits
;
968 u64 data_alloc_profile
;
969 u64 metadata_alloc_profile
;
970 u64 system_alloc_profile
;
973 struct btrfs_trans_handle
*running_transaction
;
974 struct btrfs_super_block
*super_copy
;
975 struct mutex fs_mutex
;
980 struct btrfs_extent_ops
*extent_ops
;
981 struct list_head dirty_cowonly_roots
;
982 struct list_head recow_ebs
;
984 struct btrfs_fs_devices
*fs_devices
;
985 struct list_head space_info
;
988 unsigned int readonly
:1;
989 unsigned int on_restoring
:1;
990 unsigned int is_chunk_recover
:1;
992 int (*free_extent_hook
)(struct btrfs_trans_handle
*trans
,
993 struct btrfs_root
*root
,
994 u64 bytenr
, u64 num_bytes
, u64 parent
,
995 u64 root_objectid
, u64 owner
, u64 offset
,
997 struct cache_tree
*fsck_extent_cache
;
998 struct cache_tree
*corrupt_blocks
;
1002 * in ram representation of the tree. extent_root is used for all allocations
1003 * and for the extent tree extent_root root.
1006 struct extent_buffer
*node
;
1007 struct extent_buffer
*commit_root
;
1008 struct btrfs_root_item root_item
;
1009 struct btrfs_key root_key
;
1010 struct btrfs_fs_info
*fs_info
;
1014 /* data allocations are done in sectorsize units */
1017 /* node allocations are done in nodesize units */
1020 /* leaf allocations are done in leafsize units */
1023 /* leaf allocations are done in leafsize units */
1032 u64 last_inode_alloc
;
1034 /* the dirty list is only used by non-reference counted roots */
1035 struct list_head dirty_list
;
1036 struct rb_node rb_node
;
1040 * inode items have the data typically returned from stat and store other
1041 * info about object characteristics. There is one for every file and dir in
1044 #define BTRFS_INODE_ITEM_KEY 1
1045 #define BTRFS_INODE_REF_KEY 12
1046 #define BTRFS_INODE_EXTREF_KEY 13
1047 #define BTRFS_XATTR_ITEM_KEY 24
1048 #define BTRFS_ORPHAN_ITEM_KEY 48
1050 #define BTRFS_DIR_LOG_ITEM_KEY 60
1051 #define BTRFS_DIR_LOG_INDEX_KEY 72
1053 * dir items are the name -> inode pointers in a directory. There is one
1054 * for every name in a directory.
1056 #define BTRFS_DIR_ITEM_KEY 84
1057 #define BTRFS_DIR_INDEX_KEY 96
1060 * extent data is for file data
1062 #define BTRFS_EXTENT_DATA_KEY 108
1065 * csum items have the checksums for data in the extents
1067 #define BTRFS_CSUM_ITEM_KEY 120
1069 * extent csums are stored in a separate tree and hold csums for
1070 * an entire extent on disk.
1072 #define BTRFS_EXTENT_CSUM_KEY 128
1075 * root items point to tree roots. There are typically in the root
1076 * tree used by the super block to find all the other trees
1078 #define BTRFS_ROOT_ITEM_KEY 132
1081 * root backrefs tie subvols and snapshots to the directory entries that
1084 #define BTRFS_ROOT_BACKREF_KEY 144
1087 * root refs make a fast index for listing all of the snapshots and
1088 * subvolumes referenced by a given root. They point directly to the
1089 * directory item in the root that references the subvol
1091 #define BTRFS_ROOT_REF_KEY 156
1094 * extent items are in the extent map tree. These record which blocks
1095 * are used, and how many references there are to each block
1097 #define BTRFS_EXTENT_ITEM_KEY 168
1100 * The same as the BTRFS_EXTENT_ITEM_KEY, except it's metadata we already know
1101 * the length, so we save the level in key->offset instead of the length.
1103 #define BTRFS_METADATA_ITEM_KEY 169
1105 #define BTRFS_TREE_BLOCK_REF_KEY 176
1107 #define BTRFS_EXTENT_DATA_REF_KEY 178
1109 /* old style extent backrefs */
1110 #define BTRFS_EXTENT_REF_V0_KEY 180
1112 #define BTRFS_SHARED_BLOCK_REF_KEY 182
1114 #define BTRFS_SHARED_DATA_REF_KEY 184
1118 * block groups give us hints into the extent allocation trees. Which
1119 * blocks are free etc etc
1121 #define BTRFS_BLOCK_GROUP_ITEM_KEY 192
1123 #define BTRFS_DEV_EXTENT_KEY 204
1124 #define BTRFS_DEV_ITEM_KEY 216
1125 #define BTRFS_CHUNK_ITEM_KEY 228
1127 #define BTRFS_BALANCE_ITEM_KEY 248
1132 #define BTRFS_QGROUP_STATUS_KEY 240
1133 #define BTRFS_QGROUP_INFO_KEY 242
1134 #define BTRFS_QGROUP_LIMIT_KEY 244
1135 #define BTRFS_QGROUP_RELATION_KEY 246
1138 * Persistently stores the io stats in the device tree.
1139 * One key for all stats, (0, BTRFS_DEV_STATS_KEY, devid).
1141 #define BTRFS_DEV_STATS_KEY 249
1144 * Persistently stores the device replace state in the device tree.
1145 * The key is built like this: (0, BTRFS_DEV_REPLACE_KEY, 0).
1147 #define BTRFS_DEV_REPLACE_KEY 250
1150 * Stores items that allow to quickly map UUIDs to something else.
1151 * These items are part of the filesystem UUID tree.
1152 * The key is built like this:
1153 * (UUID_upper_64_bits, BTRFS_UUID_KEY*, UUID_lower_64_bits).
1155 #if BTRFS_UUID_SIZE != 16
1156 #error "UUID items require BTRFS_UUID_SIZE == 16!"
1158 #define BTRFS_UUID_KEY_SUBVOL 251 /* for UUIDs assigned to subvols */
1159 #define BTRFS_UUID_KEY_RECEIVED_SUBVOL 252 /* for UUIDs assigned to
1160 * received subvols */
1163 * string items are for debugging. They just store a short string of
1166 #define BTRFS_STRING_ITEM_KEY 253
1170 #define BTRFS_INODE_NODATASUM (1 << 0)
1171 #define BTRFS_INODE_NODATACOW (1 << 1)
1172 #define BTRFS_INODE_READONLY (1 << 2)
1174 #define read_eb_member(eb, ptr, type, member, result) ( \
1175 read_extent_buffer(eb, (char *)(result), \
1176 ((unsigned long)(ptr)) + \
1177 offsetof(type, member), \
1178 sizeof(((type *)0)->member)))
1180 #define write_eb_member(eb, ptr, type, member, result) ( \
1181 write_extent_buffer(eb, (char *)(result), \
1182 ((unsigned long)(ptr)) + \
1183 offsetof(type, member), \
1184 sizeof(((type *)0)->member)))
1186 #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
1187 static inline u##bits btrfs_##name(const struct extent_buffer *eb) \
1189 const struct btrfs_header *h = (struct btrfs_header *)eb->data; \
1190 return le##bits##_to_cpu(h->member); \
1192 static inline void btrfs_set_##name(struct extent_buffer *eb, \
1195 struct btrfs_header *h = (struct btrfs_header *)eb->data; \
1196 h->member = cpu_to_le##bits(val); \
1199 #define BTRFS_SETGET_FUNCS(name, type, member, bits) \
1200 static inline u##bits btrfs_##name(const struct extent_buffer *eb, \
1203 unsigned long offset = (unsigned long)s; \
1204 const type *p = (type *) (eb->data + offset); \
1205 return get_unaligned_le##bits(&p->member); \
1207 static inline void btrfs_set_##name(struct extent_buffer *eb, \
1208 type *s, u##bits val) \
1210 unsigned long offset = (unsigned long)s; \
1211 type *p = (type *) (eb->data + offset); \
1212 put_unaligned_le##bits(val, &p->member); \
1215 #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
1216 static inline u##bits btrfs_##name(const type *s) \
1218 return le##bits##_to_cpu(s->member); \
1220 static inline void btrfs_set_##name(type *s, u##bits val) \
1222 s->member = cpu_to_le##bits(val); \
1225 BTRFS_SETGET_FUNCS(device_type
, struct btrfs_dev_item
, type
, 64);
1226 BTRFS_SETGET_FUNCS(device_total_bytes
, struct btrfs_dev_item
, total_bytes
, 64);
1227 BTRFS_SETGET_FUNCS(device_bytes_used
, struct btrfs_dev_item
, bytes_used
, 64);
1228 BTRFS_SETGET_FUNCS(device_io_align
, struct btrfs_dev_item
, io_align
, 32);
1229 BTRFS_SETGET_FUNCS(device_io_width
, struct btrfs_dev_item
, io_width
, 32);
1230 BTRFS_SETGET_FUNCS(device_start_offset
, struct btrfs_dev_item
,
1232 BTRFS_SETGET_FUNCS(device_sector_size
, struct btrfs_dev_item
, sector_size
, 32);
1233 BTRFS_SETGET_FUNCS(device_id
, struct btrfs_dev_item
, devid
, 64);
1234 BTRFS_SETGET_FUNCS(device_group
, struct btrfs_dev_item
, dev_group
, 32);
1235 BTRFS_SETGET_FUNCS(device_seek_speed
, struct btrfs_dev_item
, seek_speed
, 8);
1236 BTRFS_SETGET_FUNCS(device_bandwidth
, struct btrfs_dev_item
, bandwidth
, 8);
1237 BTRFS_SETGET_FUNCS(device_generation
, struct btrfs_dev_item
, generation
, 64);
1239 BTRFS_SETGET_STACK_FUNCS(stack_device_type
, struct btrfs_dev_item
, type
, 64);
1240 BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes
, struct btrfs_dev_item
,
1242 BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used
, struct btrfs_dev_item
,
1244 BTRFS_SETGET_STACK_FUNCS(stack_device_io_align
, struct btrfs_dev_item
,
1246 BTRFS_SETGET_STACK_FUNCS(stack_device_io_width
, struct btrfs_dev_item
,
1248 BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size
, struct btrfs_dev_item
,
1250 BTRFS_SETGET_STACK_FUNCS(stack_device_id
, struct btrfs_dev_item
, devid
, 64);
1251 BTRFS_SETGET_STACK_FUNCS(stack_device_group
, struct btrfs_dev_item
,
1253 BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed
, struct btrfs_dev_item
,
1255 BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth
, struct btrfs_dev_item
,
1257 BTRFS_SETGET_STACK_FUNCS(stack_device_generation
, struct btrfs_dev_item
,
1260 static inline char *btrfs_device_uuid(struct btrfs_dev_item
*d
)
1262 return (char *)d
+ offsetof(struct btrfs_dev_item
, uuid
);
1265 static inline char *btrfs_device_fsid(struct btrfs_dev_item
*d
)
1267 return (char *)d
+ offsetof(struct btrfs_dev_item
, fsid
);
1270 BTRFS_SETGET_FUNCS(chunk_length
, struct btrfs_chunk
, length
, 64);
1271 BTRFS_SETGET_FUNCS(chunk_owner
, struct btrfs_chunk
, owner
, 64);
1272 BTRFS_SETGET_FUNCS(chunk_stripe_len
, struct btrfs_chunk
, stripe_len
, 64);
1273 BTRFS_SETGET_FUNCS(chunk_io_align
, struct btrfs_chunk
, io_align
, 32);
1274 BTRFS_SETGET_FUNCS(chunk_io_width
, struct btrfs_chunk
, io_width
, 32);
1275 BTRFS_SETGET_FUNCS(chunk_sector_size
, struct btrfs_chunk
, sector_size
, 32);
1276 BTRFS_SETGET_FUNCS(chunk_type
, struct btrfs_chunk
, type
, 64);
1277 BTRFS_SETGET_FUNCS(chunk_num_stripes
, struct btrfs_chunk
, num_stripes
, 16);
1278 BTRFS_SETGET_FUNCS(chunk_sub_stripes
, struct btrfs_chunk
, sub_stripes
, 16);
1279 BTRFS_SETGET_FUNCS(stripe_devid
, struct btrfs_stripe
, devid
, 64);
1280 BTRFS_SETGET_FUNCS(stripe_offset
, struct btrfs_stripe
, offset
, 64);
1282 static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe
*s
)
1284 return (char *)s
+ offsetof(struct btrfs_stripe
, dev_uuid
);
1287 BTRFS_SETGET_STACK_FUNCS(stack_chunk_length
, struct btrfs_chunk
, length
, 64);
1288 BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner
, struct btrfs_chunk
, owner
, 64);
1289 BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len
, struct btrfs_chunk
,
1291 BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align
, struct btrfs_chunk
,
1293 BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width
, struct btrfs_chunk
,
1295 BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size
, struct btrfs_chunk
,
1297 BTRFS_SETGET_STACK_FUNCS(stack_chunk_type
, struct btrfs_chunk
, type
, 64);
1298 BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes
, struct btrfs_chunk
,
1300 BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes
, struct btrfs_chunk
,
1302 BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid
, struct btrfs_stripe
, devid
, 64);
1303 BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset
, struct btrfs_stripe
, offset
, 64);
1305 static inline struct btrfs_stripe
*btrfs_stripe_nr(struct btrfs_chunk
*c
,
1308 unsigned long offset
= (unsigned long)c
;
1309 offset
+= offsetof(struct btrfs_chunk
, stripe
);
1310 offset
+= nr
* sizeof(struct btrfs_stripe
);
1311 return (struct btrfs_stripe
*)offset
;
1314 static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk
*c
, int nr
)
1316 return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c
, nr
));
1319 static inline u64
btrfs_stripe_offset_nr(struct extent_buffer
*eb
,
1320 struct btrfs_chunk
*c
, int nr
)
1322 return btrfs_stripe_offset(eb
, btrfs_stripe_nr(c
, nr
));
1325 static inline void btrfs_set_stripe_offset_nr(struct extent_buffer
*eb
,
1326 struct btrfs_chunk
*c
, int nr
,
1329 btrfs_set_stripe_offset(eb
, btrfs_stripe_nr(c
, nr
), val
);
1332 static inline u64
btrfs_stripe_devid_nr(struct extent_buffer
*eb
,
1333 struct btrfs_chunk
*c
, int nr
)
1335 return btrfs_stripe_devid(eb
, btrfs_stripe_nr(c
, nr
));
1338 static inline void btrfs_set_stripe_devid_nr(struct extent_buffer
*eb
,
1339 struct btrfs_chunk
*c
, int nr
,
1342 btrfs_set_stripe_devid(eb
, btrfs_stripe_nr(c
, nr
), val
);
1345 /* struct btrfs_block_group_item */
1346 BTRFS_SETGET_STACK_FUNCS(block_group_used
, struct btrfs_block_group_item
,
1348 BTRFS_SETGET_FUNCS(disk_block_group_used
, struct btrfs_block_group_item
,
1350 BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid
,
1351 struct btrfs_block_group_item
, chunk_objectid
, 64);
1353 BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid
,
1354 struct btrfs_block_group_item
, chunk_objectid
, 64);
1355 BTRFS_SETGET_FUNCS(disk_block_group_flags
,
1356 struct btrfs_block_group_item
, flags
, 64);
1357 BTRFS_SETGET_STACK_FUNCS(block_group_flags
,
1358 struct btrfs_block_group_item
, flags
, 64);
1360 /* struct btrfs_inode_ref */
1361 BTRFS_SETGET_FUNCS(inode_ref_name_len
, struct btrfs_inode_ref
, name_len
, 16);
1362 BTRFS_SETGET_STACK_FUNCS(stack_inode_ref_name_len
, struct btrfs_inode_ref
, name_len
, 16);
1363 BTRFS_SETGET_FUNCS(inode_ref_index
, struct btrfs_inode_ref
, index
, 64);
1365 /* struct btrfs_inode_extref */
1366 BTRFS_SETGET_FUNCS(inode_extref_parent
, struct btrfs_inode_extref
,
1367 parent_objectid
, 64);
1368 BTRFS_SETGET_FUNCS(inode_extref_name_len
, struct btrfs_inode_extref
,
1370 BTRFS_SETGET_FUNCS(inode_extref_index
, struct btrfs_inode_extref
, index
, 64);
1372 /* struct btrfs_inode_item */
1373 BTRFS_SETGET_FUNCS(inode_generation
, struct btrfs_inode_item
, generation
, 64);
1374 BTRFS_SETGET_FUNCS(inode_sequence
, struct btrfs_inode_item
, sequence
, 64);
1375 BTRFS_SETGET_FUNCS(inode_transid
, struct btrfs_inode_item
, transid
, 64);
1376 BTRFS_SETGET_FUNCS(inode_size
, struct btrfs_inode_item
, size
, 64);
1377 BTRFS_SETGET_FUNCS(inode_nbytes
, struct btrfs_inode_item
, nbytes
, 64);
1378 BTRFS_SETGET_FUNCS(inode_block_group
, struct btrfs_inode_item
, block_group
, 64);
1379 BTRFS_SETGET_FUNCS(inode_nlink
, struct btrfs_inode_item
, nlink
, 32);
1380 BTRFS_SETGET_FUNCS(inode_uid
, struct btrfs_inode_item
, uid
, 32);
1381 BTRFS_SETGET_FUNCS(inode_gid
, struct btrfs_inode_item
, gid
, 32);
1382 BTRFS_SETGET_FUNCS(inode_mode
, struct btrfs_inode_item
, mode
, 32);
1383 BTRFS_SETGET_FUNCS(inode_rdev
, struct btrfs_inode_item
, rdev
, 64);
1384 BTRFS_SETGET_FUNCS(inode_flags
, struct btrfs_inode_item
, flags
, 64);
1386 BTRFS_SETGET_STACK_FUNCS(stack_inode_generation
,
1387 struct btrfs_inode_item
, generation
, 64);
1388 BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence
,
1389 struct btrfs_inode_item
, generation
, 64);
1390 BTRFS_SETGET_STACK_FUNCS(stack_inode_size
,
1391 struct btrfs_inode_item
, size
, 64);
1392 BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes
,
1393 struct btrfs_inode_item
, nbytes
, 64);
1394 BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group
,
1395 struct btrfs_inode_item
, block_group
, 64);
1396 BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink
,
1397 struct btrfs_inode_item
, nlink
, 32);
1398 BTRFS_SETGET_STACK_FUNCS(stack_inode_uid
,
1399 struct btrfs_inode_item
, uid
, 32);
1400 BTRFS_SETGET_STACK_FUNCS(stack_inode_gid
,
1401 struct btrfs_inode_item
, gid
, 32);
1402 BTRFS_SETGET_STACK_FUNCS(stack_inode_mode
,
1403 struct btrfs_inode_item
, mode
, 32);
1404 BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev
,
1405 struct btrfs_inode_item
, rdev
, 64);
1406 BTRFS_SETGET_STACK_FUNCS(stack_inode_flags
,
1407 struct btrfs_inode_item
, flags
, 64);
1409 static inline struct btrfs_timespec
*
1410 btrfs_inode_atime(struct btrfs_inode_item
*inode_item
)
1412 unsigned long ptr
= (unsigned long)inode_item
;
1413 ptr
+= offsetof(struct btrfs_inode_item
, atime
);
1414 return (struct btrfs_timespec
*)ptr
;
1417 static inline struct btrfs_timespec
*
1418 btrfs_inode_mtime(struct btrfs_inode_item
*inode_item
)
1420 unsigned long ptr
= (unsigned long)inode_item
;
1421 ptr
+= offsetof(struct btrfs_inode_item
, mtime
);
1422 return (struct btrfs_timespec
*)ptr
;
1425 static inline struct btrfs_timespec
*
1426 btrfs_inode_ctime(struct btrfs_inode_item
*inode_item
)
1428 unsigned long ptr
= (unsigned long)inode_item
;
1429 ptr
+= offsetof(struct btrfs_inode_item
, ctime
);
1430 return (struct btrfs_timespec
*)ptr
;
1433 static inline struct btrfs_timespec
*
1434 btrfs_inode_otime(struct btrfs_inode_item
*inode_item
)
1436 unsigned long ptr
= (unsigned long)inode_item
;
1437 ptr
+= offsetof(struct btrfs_inode_item
, otime
);
1438 return (struct btrfs_timespec
*)ptr
;
1441 BTRFS_SETGET_FUNCS(timespec_sec
, struct btrfs_timespec
, sec
, 64);
1442 BTRFS_SETGET_FUNCS(timespec_nsec
, struct btrfs_timespec
, nsec
, 32);
1443 BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec
, struct btrfs_timespec
,
1445 BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec
, struct btrfs_timespec
,
1448 /* struct btrfs_dev_extent */
1449 BTRFS_SETGET_FUNCS(dev_extent_chunk_tree
, struct btrfs_dev_extent
,
1451 BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid
, struct btrfs_dev_extent
,
1452 chunk_objectid
, 64);
1453 BTRFS_SETGET_FUNCS(dev_extent_chunk_offset
, struct btrfs_dev_extent
,
1455 BTRFS_SETGET_FUNCS(dev_extent_length
, struct btrfs_dev_extent
, length
, 64);
1457 static inline u8
*btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent
*dev
)
1459 unsigned long ptr
= offsetof(struct btrfs_dev_extent
, chunk_tree_uuid
);
1460 return (u8
*)((unsigned long)dev
+ ptr
);
1464 /* struct btrfs_extent_item */
1465 BTRFS_SETGET_FUNCS(extent_refs
, struct btrfs_extent_item
, refs
, 64);
1466 BTRFS_SETGET_STACK_FUNCS(stack_extent_refs
, struct btrfs_extent_item
, refs
, 64);
1467 BTRFS_SETGET_FUNCS(extent_generation
, struct btrfs_extent_item
,
1469 BTRFS_SETGET_FUNCS(extent_flags
, struct btrfs_extent_item
, flags
, 64);
1470 BTRFS_SETGET_STACK_FUNCS(stack_extent_flags
, struct btrfs_extent_item
, flags
, 64);
1472 BTRFS_SETGET_FUNCS(extent_refs_v0
, struct btrfs_extent_item_v0
, refs
, 32);
1474 BTRFS_SETGET_FUNCS(tree_block_level
, struct btrfs_tree_block_info
, level
, 8);
1476 static inline void btrfs_tree_block_key(struct extent_buffer
*eb
,
1477 struct btrfs_tree_block_info
*item
,
1478 struct btrfs_disk_key
*key
)
1480 read_eb_member(eb
, item
, struct btrfs_tree_block_info
, key
, key
);
1483 static inline void btrfs_set_tree_block_key(struct extent_buffer
*eb
,
1484 struct btrfs_tree_block_info
*item
,
1485 struct btrfs_disk_key
*key
)
1487 write_eb_member(eb
, item
, struct btrfs_tree_block_info
, key
, key
);
1490 BTRFS_SETGET_FUNCS(extent_data_ref_root
, struct btrfs_extent_data_ref
,
1492 BTRFS_SETGET_FUNCS(extent_data_ref_objectid
, struct btrfs_extent_data_ref
,
1494 BTRFS_SETGET_FUNCS(extent_data_ref_offset
, struct btrfs_extent_data_ref
,
1496 BTRFS_SETGET_FUNCS(extent_data_ref_count
, struct btrfs_extent_data_ref
,
1499 BTRFS_SETGET_FUNCS(shared_data_ref_count
, struct btrfs_shared_data_ref
,
1502 BTRFS_SETGET_FUNCS(extent_inline_ref_type
, struct btrfs_extent_inline_ref
,
1504 BTRFS_SETGET_FUNCS(extent_inline_ref_offset
, struct btrfs_extent_inline_ref
,
1506 BTRFS_SETGET_STACK_FUNCS(stack_extent_inline_ref_type
,
1507 struct btrfs_extent_inline_ref
, type
, 8);
1508 BTRFS_SETGET_STACK_FUNCS(stack_extent_inline_ref_offset
,
1509 struct btrfs_extent_inline_ref
, offset
, 64);
1511 static inline u32
btrfs_extent_inline_ref_size(int type
)
1513 if (type
== BTRFS_TREE_BLOCK_REF_KEY
||
1514 type
== BTRFS_SHARED_BLOCK_REF_KEY
)
1515 return sizeof(struct btrfs_extent_inline_ref
);
1516 if (type
== BTRFS_SHARED_DATA_REF_KEY
)
1517 return sizeof(struct btrfs_shared_data_ref
) +
1518 sizeof(struct btrfs_extent_inline_ref
);
1519 if (type
== BTRFS_EXTENT_DATA_REF_KEY
)
1520 return sizeof(struct btrfs_extent_data_ref
) +
1521 offsetof(struct btrfs_extent_inline_ref
, offset
);
1526 BTRFS_SETGET_FUNCS(ref_root_v0
, struct btrfs_extent_ref_v0
, root
, 64);
1527 BTRFS_SETGET_FUNCS(ref_generation_v0
, struct btrfs_extent_ref_v0
,
1529 BTRFS_SETGET_FUNCS(ref_objectid_v0
, struct btrfs_extent_ref_v0
, objectid
, 64);
1530 BTRFS_SETGET_FUNCS(ref_count_v0
, struct btrfs_extent_ref_v0
, count
, 32);
1532 /* struct btrfs_node */
1533 BTRFS_SETGET_FUNCS(key_blockptr
, struct btrfs_key_ptr
, blockptr
, 64);
1534 BTRFS_SETGET_FUNCS(key_generation
, struct btrfs_key_ptr
, generation
, 64);
1536 static inline u64
btrfs_node_blockptr(struct extent_buffer
*eb
, int nr
)
1539 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1540 sizeof(struct btrfs_key_ptr
) * nr
;
1541 return btrfs_key_blockptr(eb
, (struct btrfs_key_ptr
*)ptr
);
1544 static inline void btrfs_set_node_blockptr(struct extent_buffer
*eb
,
1548 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1549 sizeof(struct btrfs_key_ptr
) * nr
;
1550 btrfs_set_key_blockptr(eb
, (struct btrfs_key_ptr
*)ptr
, val
);
1553 static inline u64
btrfs_node_ptr_generation(struct extent_buffer
*eb
, int nr
)
1556 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1557 sizeof(struct btrfs_key_ptr
) * nr
;
1558 return btrfs_key_generation(eb
, (struct btrfs_key_ptr
*)ptr
);
1561 static inline void btrfs_set_node_ptr_generation(struct extent_buffer
*eb
,
1565 ptr
= offsetof(struct btrfs_node
, ptrs
) +
1566 sizeof(struct btrfs_key_ptr
) * nr
;
1567 btrfs_set_key_generation(eb
, (struct btrfs_key_ptr
*)ptr
, val
);
1570 static inline unsigned long btrfs_node_key_ptr_offset(int nr
)
1572 return offsetof(struct btrfs_node
, ptrs
) +
1573 sizeof(struct btrfs_key_ptr
) * nr
;
1576 static inline void btrfs_node_key(struct extent_buffer
*eb
,
1577 struct btrfs_disk_key
*disk_key
, int nr
)
1580 ptr
= btrfs_node_key_ptr_offset(nr
);
1581 read_eb_member(eb
, (struct btrfs_key_ptr
*)ptr
,
1582 struct btrfs_key_ptr
, key
, disk_key
);
1585 static inline void btrfs_set_node_key(struct extent_buffer
*eb
,
1586 struct btrfs_disk_key
*disk_key
, int nr
)
1589 ptr
= btrfs_node_key_ptr_offset(nr
);
1590 write_eb_member(eb
, (struct btrfs_key_ptr
*)ptr
,
1591 struct btrfs_key_ptr
, key
, disk_key
);
1594 /* struct btrfs_item */
1595 BTRFS_SETGET_FUNCS(item_offset
, struct btrfs_item
, offset
, 32);
1596 BTRFS_SETGET_FUNCS(item_size
, struct btrfs_item
, size
, 32);
1598 static inline unsigned long btrfs_item_nr_offset(int nr
)
1600 return offsetof(struct btrfs_leaf
, items
) +
1601 sizeof(struct btrfs_item
) * nr
;
1604 static inline struct btrfs_item
*btrfs_item_nr(int nr
)
1606 return (struct btrfs_item
*)btrfs_item_nr_offset(nr
);
1609 static inline u32
btrfs_item_end(struct extent_buffer
*eb
,
1610 struct btrfs_item
*item
)
1612 return btrfs_item_offset(eb
, item
) + btrfs_item_size(eb
, item
);
1615 static inline u32
btrfs_item_end_nr(struct extent_buffer
*eb
, int nr
)
1617 return btrfs_item_end(eb
, btrfs_item_nr(nr
));
1620 static inline u32
btrfs_item_offset_nr(struct extent_buffer
*eb
, int nr
)
1622 return btrfs_item_offset(eb
, btrfs_item_nr(nr
));
1625 static inline u32
btrfs_item_size_nr(struct extent_buffer
*eb
, int nr
)
1627 return btrfs_item_size(eb
, btrfs_item_nr(nr
));
1630 static inline void btrfs_item_key(struct extent_buffer
*eb
,
1631 struct btrfs_disk_key
*disk_key
, int nr
)
1633 struct btrfs_item
*item
= btrfs_item_nr(nr
);
1634 read_eb_member(eb
, item
, struct btrfs_item
, key
, disk_key
);
1637 static inline void btrfs_set_item_key(struct extent_buffer
*eb
,
1638 struct btrfs_disk_key
*disk_key
, int nr
)
1640 struct btrfs_item
*item
= btrfs_item_nr(nr
);
1641 write_eb_member(eb
, item
, struct btrfs_item
, key
, disk_key
);
1644 BTRFS_SETGET_FUNCS(dir_log_end
, struct btrfs_dir_log_item
, end
, 64);
1647 * struct btrfs_root_ref
1649 BTRFS_SETGET_FUNCS(root_ref_dirid
, struct btrfs_root_ref
, dirid
, 64);
1650 BTRFS_SETGET_FUNCS(root_ref_sequence
, struct btrfs_root_ref
, sequence
, 64);
1651 BTRFS_SETGET_FUNCS(root_ref_name_len
, struct btrfs_root_ref
, name_len
, 16);
1653 BTRFS_SETGET_STACK_FUNCS(stack_root_ref_dirid
, struct btrfs_root_ref
, dirid
, 64);
1654 BTRFS_SETGET_STACK_FUNCS(stack_root_ref_sequence
, struct btrfs_root_ref
, sequence
, 64);
1655 BTRFS_SETGET_STACK_FUNCS(stack_root_ref_name_len
, struct btrfs_root_ref
, name_len
, 16);
1657 /* struct btrfs_dir_item */
1658 BTRFS_SETGET_FUNCS(dir_data_len
, struct btrfs_dir_item
, data_len
, 16);
1659 BTRFS_SETGET_FUNCS(dir_type
, struct btrfs_dir_item
, type
, 8);
1660 BTRFS_SETGET_FUNCS(dir_name_len
, struct btrfs_dir_item
, name_len
, 16);
1661 BTRFS_SETGET_FUNCS(dir_transid
, struct btrfs_dir_item
, transid
, 64);
1663 BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len
, struct btrfs_dir_item
, name_len
, 16);
1665 static inline void btrfs_dir_item_key(struct extent_buffer
*eb
,
1666 struct btrfs_dir_item
*item
,
1667 struct btrfs_disk_key
*key
)
1669 read_eb_member(eb
, item
, struct btrfs_dir_item
, location
, key
);
1672 static inline void btrfs_set_dir_item_key(struct extent_buffer
*eb
,
1673 struct btrfs_dir_item
*item
,
1674 struct btrfs_disk_key
*key
)
1676 write_eb_member(eb
, item
, struct btrfs_dir_item
, location
, key
);
1679 /* struct btrfs_free_space_header */
1680 BTRFS_SETGET_FUNCS(free_space_entries
, struct btrfs_free_space_header
,
1682 BTRFS_SETGET_FUNCS(free_space_bitmaps
, struct btrfs_free_space_header
,
1684 BTRFS_SETGET_FUNCS(free_space_generation
, struct btrfs_free_space_header
,
1687 static inline void btrfs_free_space_key(struct extent_buffer
*eb
,
1688 struct btrfs_free_space_header
*h
,
1689 struct btrfs_disk_key
*key
)
1691 read_eb_member(eb
, h
, struct btrfs_free_space_header
, location
, key
);
1694 static inline void btrfs_set_free_space_key(struct extent_buffer
*eb
,
1695 struct btrfs_free_space_header
*h
,
1696 struct btrfs_disk_key
*key
)
1698 write_eb_member(eb
, h
, struct btrfs_free_space_header
, location
, key
);
1701 /* struct btrfs_disk_key */
1702 BTRFS_SETGET_STACK_FUNCS(disk_key_objectid
, struct btrfs_disk_key
,
1704 BTRFS_SETGET_STACK_FUNCS(disk_key_offset
, struct btrfs_disk_key
, offset
, 64);
1705 BTRFS_SETGET_STACK_FUNCS(disk_key_type
, struct btrfs_disk_key
, type
, 8);
1707 static inline void btrfs_disk_key_to_cpu(struct btrfs_key
*cpu
,
1708 struct btrfs_disk_key
*disk
)
1710 cpu
->offset
= le64_to_cpu(disk
->offset
);
1711 cpu
->type
= disk
->type
;
1712 cpu
->objectid
= le64_to_cpu(disk
->objectid
);
1715 static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key
*disk
,
1716 struct btrfs_key
*cpu
)
1718 disk
->offset
= cpu_to_le64(cpu
->offset
);
1719 disk
->type
= cpu
->type
;
1720 disk
->objectid
= cpu_to_le64(cpu
->objectid
);
1723 static inline void btrfs_node_key_to_cpu(struct extent_buffer
*eb
,
1724 struct btrfs_key
*key
, int nr
)
1726 struct btrfs_disk_key disk_key
;
1727 btrfs_node_key(eb
, &disk_key
, nr
);
1728 btrfs_disk_key_to_cpu(key
, &disk_key
);
1731 static inline void btrfs_item_key_to_cpu(struct extent_buffer
*eb
,
1732 struct btrfs_key
*key
, int nr
)
1734 struct btrfs_disk_key disk_key
;
1735 btrfs_item_key(eb
, &disk_key
, nr
);
1736 btrfs_disk_key_to_cpu(key
, &disk_key
);
1739 static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer
*eb
,
1740 struct btrfs_dir_item
*item
,
1741 struct btrfs_key
*key
)
1743 struct btrfs_disk_key disk_key
;
1744 btrfs_dir_item_key(eb
, item
, &disk_key
);
1745 btrfs_disk_key_to_cpu(key
, &disk_key
);
1749 static inline u8
btrfs_key_type(struct btrfs_key
*key
)
1754 static inline void btrfs_set_key_type(struct btrfs_key
*key
, u8 val
)
1759 /* struct btrfs_header */
1760 BTRFS_SETGET_HEADER_FUNCS(header_bytenr
, struct btrfs_header
, bytenr
, 64);
1761 BTRFS_SETGET_HEADER_FUNCS(header_generation
, struct btrfs_header
,
1763 BTRFS_SETGET_HEADER_FUNCS(header_owner
, struct btrfs_header
, owner
, 64);
1764 BTRFS_SETGET_HEADER_FUNCS(header_nritems
, struct btrfs_header
, nritems
, 32);
1765 BTRFS_SETGET_HEADER_FUNCS(header_flags
, struct btrfs_header
, flags
, 64);
1766 BTRFS_SETGET_HEADER_FUNCS(header_level
, struct btrfs_header
, level
, 8);
1767 BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr
, struct btrfs_header
, bytenr
, 64);
1768 BTRFS_SETGET_STACK_FUNCS(stack_header_nritems
, struct btrfs_header
, nritems
,
1770 BTRFS_SETGET_STACK_FUNCS(stack_header_owner
, struct btrfs_header
, owner
, 64);
1771 BTRFS_SETGET_STACK_FUNCS(stack_header_generation
, struct btrfs_header
,
1774 static inline int btrfs_header_flag(struct extent_buffer
*eb
, u64 flag
)
1776 return (btrfs_header_flags(eb
) & flag
) == flag
;
1779 static inline int btrfs_set_header_flag(struct extent_buffer
*eb
, u64 flag
)
1781 u64 flags
= btrfs_header_flags(eb
);
1782 btrfs_set_header_flags(eb
, flags
| flag
);
1783 return (flags
& flag
) == flag
;
1786 static inline int btrfs_clear_header_flag(struct extent_buffer
*eb
, u64 flag
)
1788 u64 flags
= btrfs_header_flags(eb
);
1789 btrfs_set_header_flags(eb
, flags
& ~flag
);
1790 return (flags
& flag
) == flag
;
1793 static inline int btrfs_header_backref_rev(struct extent_buffer
*eb
)
1795 u64 flags
= btrfs_header_flags(eb
);
1796 return flags
>> BTRFS_BACKREF_REV_SHIFT
;
1799 static inline void btrfs_set_header_backref_rev(struct extent_buffer
*eb
,
1802 u64 flags
= btrfs_header_flags(eb
);
1803 flags
&= ~BTRFS_BACKREF_REV_MASK
;
1804 flags
|= (u64
)rev
<< BTRFS_BACKREF_REV_SHIFT
;
1805 btrfs_set_header_flags(eb
, flags
);
1808 static inline unsigned long btrfs_header_fsid(void)
1810 return offsetof(struct btrfs_header
, fsid
);
1813 static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer
*eb
)
1815 return offsetof(struct btrfs_header
, chunk_tree_uuid
);
1818 static inline u8
*btrfs_super_fsid(struct extent_buffer
*eb
)
1820 unsigned long ptr
= offsetof(struct btrfs_super_block
, fsid
);
1824 static inline u8
*btrfs_header_csum(struct extent_buffer
*eb
)
1826 unsigned long ptr
= offsetof(struct btrfs_header
, csum
);
1830 static inline struct btrfs_node
*btrfs_buffer_node(struct extent_buffer
*eb
)
1835 static inline struct btrfs_leaf
*btrfs_buffer_leaf(struct extent_buffer
*eb
)
1840 static inline struct btrfs_header
*btrfs_buffer_header(struct extent_buffer
*eb
)
1845 static inline int btrfs_is_leaf(struct extent_buffer
*eb
)
1847 return (btrfs_header_level(eb
) == 0);
1850 /* struct btrfs_root_item */
1851 BTRFS_SETGET_FUNCS(disk_root_generation
, struct btrfs_root_item
,
1853 BTRFS_SETGET_FUNCS(disk_root_refs
, struct btrfs_root_item
, refs
, 32);
1854 BTRFS_SETGET_FUNCS(disk_root_bytenr
, struct btrfs_root_item
, bytenr
, 64);
1855 BTRFS_SETGET_FUNCS(disk_root_level
, struct btrfs_root_item
, level
, 8);
1857 BTRFS_SETGET_STACK_FUNCS(root_generation
, struct btrfs_root_item
,
1859 BTRFS_SETGET_STACK_FUNCS(root_bytenr
, struct btrfs_root_item
, bytenr
, 64);
1860 BTRFS_SETGET_STACK_FUNCS(root_level
, struct btrfs_root_item
, level
, 8);
1861 BTRFS_SETGET_STACK_FUNCS(root_dirid
, struct btrfs_root_item
, root_dirid
, 64);
1862 BTRFS_SETGET_STACK_FUNCS(root_refs
, struct btrfs_root_item
, refs
, 32);
1863 BTRFS_SETGET_STACK_FUNCS(root_flags
, struct btrfs_root_item
, flags
, 64);
1864 BTRFS_SETGET_STACK_FUNCS(root_used
, struct btrfs_root_item
, bytes_used
, 64);
1865 BTRFS_SETGET_STACK_FUNCS(root_limit
, struct btrfs_root_item
, byte_limit
, 64);
1866 BTRFS_SETGET_STACK_FUNCS(root_last_snapshot
, struct btrfs_root_item
,
1868 BTRFS_SETGET_STACK_FUNCS(root_generation_v2
, struct btrfs_root_item
,
1870 BTRFS_SETGET_STACK_FUNCS(root_ctransid
, struct btrfs_root_item
,
1872 BTRFS_SETGET_STACK_FUNCS(root_otransid
, struct btrfs_root_item
,
1874 BTRFS_SETGET_STACK_FUNCS(root_stransid
, struct btrfs_root_item
,
1876 BTRFS_SETGET_STACK_FUNCS(root_rtransid
, struct btrfs_root_item
,
1879 /* struct btrfs_root_backup */
1880 BTRFS_SETGET_STACK_FUNCS(backup_tree_root
, struct btrfs_root_backup
,
1882 BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen
, struct btrfs_root_backup
,
1884 BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level
, struct btrfs_root_backup
,
1885 tree_root_level
, 8);
1887 BTRFS_SETGET_STACK_FUNCS(backup_chunk_root
, struct btrfs_root_backup
,
1889 BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen
, struct btrfs_root_backup
,
1890 chunk_root_gen
, 64);
1891 BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level
, struct btrfs_root_backup
,
1892 chunk_root_level
, 8);
1894 BTRFS_SETGET_STACK_FUNCS(backup_extent_root
, struct btrfs_root_backup
,
1896 BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen
, struct btrfs_root_backup
,
1897 extent_root_gen
, 64);
1898 BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level
, struct btrfs_root_backup
,
1899 extent_root_level
, 8);
1901 BTRFS_SETGET_STACK_FUNCS(backup_fs_root
, struct btrfs_root_backup
,
1903 BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen
, struct btrfs_root_backup
,
1905 BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level
, struct btrfs_root_backup
,
1908 BTRFS_SETGET_STACK_FUNCS(backup_dev_root
, struct btrfs_root_backup
,
1910 BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen
, struct btrfs_root_backup
,
1912 BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level
, struct btrfs_root_backup
,
1915 BTRFS_SETGET_STACK_FUNCS(backup_csum_root
, struct btrfs_root_backup
,
1917 BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen
, struct btrfs_root_backup
,
1919 BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level
, struct btrfs_root_backup
,
1920 csum_root_level
, 8);
1921 BTRFS_SETGET_STACK_FUNCS(backup_total_bytes
, struct btrfs_root_backup
,
1923 BTRFS_SETGET_STACK_FUNCS(backup_bytes_used
, struct btrfs_root_backup
,
1925 BTRFS_SETGET_STACK_FUNCS(backup_num_devices
, struct btrfs_root_backup
,
1928 /* struct btrfs_super_block */
1930 BTRFS_SETGET_STACK_FUNCS(super_bytenr
, struct btrfs_super_block
, bytenr
, 64);
1931 BTRFS_SETGET_STACK_FUNCS(super_flags
, struct btrfs_super_block
, flags
, 64);
1932 BTRFS_SETGET_STACK_FUNCS(super_generation
, struct btrfs_super_block
,
1934 BTRFS_SETGET_STACK_FUNCS(super_root
, struct btrfs_super_block
, root
, 64);
1935 BTRFS_SETGET_STACK_FUNCS(super_sys_array_size
,
1936 struct btrfs_super_block
, sys_chunk_array_size
, 32);
1937 BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation
,
1938 struct btrfs_super_block
, chunk_root_generation
, 64);
1939 BTRFS_SETGET_STACK_FUNCS(super_root_level
, struct btrfs_super_block
,
1941 BTRFS_SETGET_STACK_FUNCS(super_chunk_root
, struct btrfs_super_block
,
1943 BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level
, struct btrfs_super_block
,
1944 chunk_root_level
, 8);
1945 BTRFS_SETGET_STACK_FUNCS(super_log_root
, struct btrfs_super_block
,
1947 BTRFS_SETGET_STACK_FUNCS(super_log_root_transid
, struct btrfs_super_block
,
1948 log_root_transid
, 64);
1949 BTRFS_SETGET_STACK_FUNCS(super_log_root_level
, struct btrfs_super_block
,
1951 BTRFS_SETGET_STACK_FUNCS(super_total_bytes
, struct btrfs_super_block
,
1953 BTRFS_SETGET_STACK_FUNCS(super_bytes_used
, struct btrfs_super_block
,
1955 BTRFS_SETGET_STACK_FUNCS(super_sectorsize
, struct btrfs_super_block
,
1957 BTRFS_SETGET_STACK_FUNCS(super_nodesize
, struct btrfs_super_block
,
1959 BTRFS_SETGET_STACK_FUNCS(super_leafsize
, struct btrfs_super_block
,
1961 BTRFS_SETGET_STACK_FUNCS(super_stripesize
, struct btrfs_super_block
,
1963 BTRFS_SETGET_STACK_FUNCS(super_root_dir
, struct btrfs_super_block
,
1964 root_dir_objectid
, 64);
1965 BTRFS_SETGET_STACK_FUNCS(super_num_devices
, struct btrfs_super_block
,
1967 BTRFS_SETGET_STACK_FUNCS(super_compat_flags
, struct btrfs_super_block
,
1969 BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags
, struct btrfs_super_block
,
1970 compat_ro_flags
, 64);
1971 BTRFS_SETGET_STACK_FUNCS(super_incompat_flags
, struct btrfs_super_block
,
1972 incompat_flags
, 64);
1973 BTRFS_SETGET_STACK_FUNCS(super_csum_type
, struct btrfs_super_block
,
1975 BTRFS_SETGET_STACK_FUNCS(super_cache_generation
, struct btrfs_super_block
,
1976 cache_generation
, 64);
1977 BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation
, struct btrfs_super_block
,
1978 uuid_tree_generation
, 64);
1979 BTRFS_SETGET_STACK_FUNCS(super_magic
, struct btrfs_super_block
, magic
, 64);
1981 static inline int btrfs_super_csum_size(struct btrfs_super_block
*s
)
1983 int t
= btrfs_super_csum_type(s
);
1984 BUG_ON(t
>= ARRAY_SIZE(btrfs_csum_sizes
));
1985 return btrfs_csum_sizes
[t
];
1988 static inline unsigned long btrfs_leaf_data(struct extent_buffer
*l
)
1990 return offsetof(struct btrfs_leaf
, items
);
1993 /* struct btrfs_file_extent_item */
1994 BTRFS_SETGET_FUNCS(file_extent_type
, struct btrfs_file_extent_item
, type
, 8);
1995 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_type
, struct btrfs_file_extent_item
, type
, 8);
1997 static inline unsigned long btrfs_file_extent_inline_start(struct
1998 btrfs_file_extent_item
*e
)
2000 unsigned long offset
= (unsigned long)e
;
2001 offset
+= offsetof(struct btrfs_file_extent_item
, disk_bytenr
);
2005 static inline u32
btrfs_file_extent_calc_inline_size(u32 datasize
)
2007 return offsetof(struct btrfs_file_extent_item
, disk_bytenr
) + datasize
;
2010 BTRFS_SETGET_FUNCS(file_extent_disk_bytenr
, struct btrfs_file_extent_item
,
2012 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr
, struct btrfs_file_extent_item
,
2014 BTRFS_SETGET_FUNCS(file_extent_generation
, struct btrfs_file_extent_item
,
2016 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation
, struct btrfs_file_extent_item
,
2018 BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes
, struct btrfs_file_extent_item
,
2019 disk_num_bytes
, 64);
2020 BTRFS_SETGET_FUNCS(file_extent_offset
, struct btrfs_file_extent_item
,
2022 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset
, struct btrfs_file_extent_item
,
2024 BTRFS_SETGET_FUNCS(file_extent_num_bytes
, struct btrfs_file_extent_item
,
2026 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes
, struct btrfs_file_extent_item
,
2028 BTRFS_SETGET_FUNCS(file_extent_ram_bytes
, struct btrfs_file_extent_item
,
2030 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_ram_bytes
, struct btrfs_file_extent_item
,
2032 BTRFS_SETGET_FUNCS(file_extent_compression
, struct btrfs_file_extent_item
,
2034 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression
, struct btrfs_file_extent_item
,
2036 BTRFS_SETGET_FUNCS(file_extent_encryption
, struct btrfs_file_extent_item
,
2038 BTRFS_SETGET_FUNCS(file_extent_other_encoding
, struct btrfs_file_extent_item
,
2039 other_encoding
, 16);
2041 /* btrfs_qgroup_status_item */
2042 BTRFS_SETGET_FUNCS(qgroup_status_version
, struct btrfs_qgroup_status_item
,
2044 BTRFS_SETGET_FUNCS(qgroup_status_generation
, struct btrfs_qgroup_status_item
,
2046 BTRFS_SETGET_FUNCS(qgroup_status_flags
, struct btrfs_qgroup_status_item
,
2048 BTRFS_SETGET_FUNCS(qgroup_status_scan
, struct btrfs_qgroup_status_item
,
2051 /* btrfs_qgroup_info_item */
2052 BTRFS_SETGET_FUNCS(qgroup_info_generation
, struct btrfs_qgroup_info_item
,
2054 BTRFS_SETGET_FUNCS(qgroup_info_referenced
, struct btrfs_qgroup_info_item
,
2056 BTRFS_SETGET_FUNCS(qgroup_info_referenced_compressed
,
2057 struct btrfs_qgroup_info_item
, referenced_compressed
, 64);
2058 BTRFS_SETGET_FUNCS(qgroup_info_exclusive
, struct btrfs_qgroup_info_item
,
2060 BTRFS_SETGET_FUNCS(qgroup_info_exclusive_compressed
,
2061 struct btrfs_qgroup_info_item
, exclusive_compressed
, 64);
2063 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation
,
2064 struct btrfs_qgroup_info_item
, generation
, 64);
2065 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_referenced
,
2066 struct btrfs_qgroup_info_item
, referenced
, 64);
2067 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_referenced_compressed
,
2068 struct btrfs_qgroup_info_item
, referenced_compressed
, 64);
2069 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_exclusive
,
2070 struct btrfs_qgroup_info_item
, exclusive
, 64);
2071 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_exclusive_compressed
,
2072 struct btrfs_qgroup_info_item
, exclusive_compressed
, 64);
2074 /* btrfs_qgroup_limit_item */
2075 BTRFS_SETGET_FUNCS(qgroup_limit_flags
, struct btrfs_qgroup_limit_item
,
2077 BTRFS_SETGET_FUNCS(qgroup_limit_max_referenced
, struct btrfs_qgroup_limit_item
,
2078 max_referenced
, 64);
2079 BTRFS_SETGET_FUNCS(qgroup_limit_max_exclusive
, struct btrfs_qgroup_limit_item
,
2081 BTRFS_SETGET_FUNCS(qgroup_limit_rsv_referenced
, struct btrfs_qgroup_limit_item
,
2082 rsv_referenced
, 64);
2083 BTRFS_SETGET_FUNCS(qgroup_limit_rsv_exclusive
, struct btrfs_qgroup_limit_item
,
2086 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_flags
,
2087 struct btrfs_qgroup_limit_item
, flags
, 64);
2088 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_referenced
,
2089 struct btrfs_qgroup_limit_item
, max_referenced
, 64);
2090 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_exclusive
,
2091 struct btrfs_qgroup_limit_item
, max_exclusive
, 64);
2092 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_referenced
,
2093 struct btrfs_qgroup_limit_item
, rsv_referenced
, 64);
2094 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_exclusive
,
2095 struct btrfs_qgroup_limit_item
, rsv_exclusive
, 64);
2098 * this returns the number of bytes used by the item on disk, minus the
2099 * size of any extent headers. If a file is compressed on disk, this is
2100 * the compressed size
2102 static inline u32
btrfs_file_extent_inline_item_len(struct extent_buffer
*eb
,
2103 struct btrfs_item
*e
)
2105 unsigned long offset
;
2106 offset
= offsetof(struct btrfs_file_extent_item
, disk_bytenr
);
2107 return btrfs_item_size(eb
, e
) - offset
;
2110 /* this returns the number of file bytes represented by the inline item.
2111 * If an item is compressed, this is the uncompressed size
2113 static inline u32
btrfs_file_extent_inline_len(struct extent_buffer
*eb
,
2115 struct btrfs_file_extent_item
*fi
)
2118 * return the space used on disk if this item isn't
2119 * compressed or encoded
2121 if (btrfs_file_extent_compression(eb
, fi
) == 0 &&
2122 btrfs_file_extent_encryption(eb
, fi
) == 0 &&
2123 btrfs_file_extent_other_encoding(eb
, fi
) == 0) {
2124 return btrfs_file_extent_inline_item_len(eb
,
2125 btrfs_item_nr(slot
));
2128 /* otherwise use the ram bytes field */
2129 return btrfs_file_extent_ram_bytes(eb
, fi
);
2132 static inline u32
btrfs_level_size(struct btrfs_root
*root
, int level
) {
2134 return root
->leafsize
;
2135 return root
->nodesize
;
2138 static inline int btrfs_fs_incompat(struct btrfs_fs_info
*fs_info
, u64 flag
)
2140 struct btrfs_super_block
*disk_super
;
2141 disk_super
= fs_info
->super_copy
;
2142 return !!(btrfs_super_incompat_flags(disk_super
) & flag
);
2145 /* helper function to cast into the data area of the leaf. */
2146 #define btrfs_item_ptr(leaf, slot, type) \
2147 ((type *)(btrfs_leaf_data(leaf) + \
2148 btrfs_item_offset_nr(leaf, slot)))
2150 #define btrfs_item_ptr_offset(leaf, slot) \
2151 ((unsigned long)(btrfs_leaf_data(leaf) + \
2152 btrfs_item_offset_nr(leaf, slot)))
2155 int btrfs_reserve_extent(struct btrfs_trans_handle
*trans
,
2156 struct btrfs_root
*root
,
2157 u64 num_bytes
, u64 empty_size
,
2158 u64 hint_byte
, u64 search_end
,
2159 struct btrfs_key
*ins
, int data
);
2160 int btrfs_fix_block_accounting(struct btrfs_trans_handle
*trans
,
2161 struct btrfs_root
*root
);
2162 void btrfs_pin_extent(struct btrfs_fs_info
*fs_info
, u64 bytenr
, u64 num_bytes
);
2163 void btrfs_unpin_extent(struct btrfs_fs_info
*fs_info
,
2164 u64 bytenr
, u64 num_bytes
);
2165 int btrfs_extent_post_op(struct btrfs_trans_handle
*trans
,
2166 struct btrfs_root
*root
);
2167 struct btrfs_block_group_cache
*btrfs_lookup_block_group(struct
2168 btrfs_fs_info
*info
,
2170 struct btrfs_block_group_cache
*btrfs_lookup_first_block_group(struct
2171 btrfs_fs_info
*info
,
2173 struct extent_buffer
*btrfs_alloc_free_block(struct btrfs_trans_handle
*trans
,
2174 struct btrfs_root
*root
,
2175 u32 blocksize
, u64 root_objectid
,
2176 struct btrfs_disk_key
*key
, int level
,
2177 u64 hint
, u64 empty_size
);
2178 int btrfs_alloc_extent(struct btrfs_trans_handle
*trans
,
2179 struct btrfs_root
*root
,
2180 u64 num_bytes
, u64 parent
,
2181 u64 root_objectid
, u64 ref_generation
,
2182 u64 owner
, u64 empty_size
, u64 hint_byte
,
2183 u64 search_end
, struct btrfs_key
*ins
, int data
);
2184 int btrfs_lookup_extent_info(struct btrfs_trans_handle
*trans
,
2185 struct btrfs_root
*root
, u64 bytenr
,
2186 u64 offset
, int metadata
, u64
*refs
, u64
*flags
);
2187 int btrfs_set_block_flags(struct btrfs_trans_handle
*trans
,
2188 struct btrfs_root
*root
,
2189 u64 bytenr
, int level
, u64 flags
);
2190 int btrfs_inc_ref(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
2191 struct extent_buffer
*buf
, int record_parent
);
2192 int btrfs_dec_ref(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
2193 struct extent_buffer
*buf
, int record_parent
);
2194 int btrfs_free_extent(struct btrfs_trans_handle
*trans
,
2195 struct btrfs_root
*root
,
2196 u64 bytenr
, u64 num_bytes
, u64 parent
,
2197 u64 root_objectid
, u64 owner
, u64 offset
);
2198 int btrfs_finish_extent_commit(struct btrfs_trans_handle
*trans
,
2199 struct btrfs_root
*root
,
2200 struct extent_io_tree
*unpin
);
2201 int btrfs_inc_extent_ref(struct btrfs_trans_handle
*trans
,
2202 struct btrfs_root
*root
,
2203 u64 bytenr
, u64 num_bytes
, u64 parent
,
2204 u64 root_objectid
, u64 ref_generation
,
2205 u64 owner_objectid
);
2206 int btrfs_update_extent_ref(struct btrfs_trans_handle
*trans
,
2207 struct btrfs_root
*root
, u64 bytenr
,
2208 u64 orig_parent
, u64 parent
,
2209 u64 root_objectid
, u64 ref_generation
,
2210 u64 owner_objectid
);
2211 int btrfs_write_dirty_block_groups(struct btrfs_trans_handle
*trans
,
2212 struct btrfs_root
*root
);
2213 int btrfs_free_block_groups(struct btrfs_fs_info
*info
);
2214 int btrfs_read_block_groups(struct btrfs_root
*root
);
2215 struct btrfs_block_group_cache
*
2216 btrfs_add_block_group(struct btrfs_fs_info
*fs_info
, u64 bytes_used
, u64 type
,
2217 u64 chunk_objectid
, u64 chunk_offset
, u64 size
);
2218 int btrfs_make_block_group(struct btrfs_trans_handle
*trans
,
2219 struct btrfs_root
*root
, u64 bytes_used
,
2220 u64 type
, u64 chunk_objectid
, u64 chunk_offset
,
2222 int btrfs_make_block_groups(struct btrfs_trans_handle
*trans
,
2223 struct btrfs_root
*root
);
2224 int btrfs_update_block_group(struct btrfs_trans_handle
*trans
,
2225 struct btrfs_root
*root
, u64 bytenr
, u64 num
,
2226 int alloc
, int mark_free
);
2227 int btrfs_record_file_extent(struct btrfs_trans_handle
*trans
,
2228 struct btrfs_root
*root
, u64 objectid
,
2229 struct btrfs_inode_item
*inode
,
2230 u64 file_pos
, u64 disk_bytenr
,
2233 int btrfs_comp_cpu_keys(struct btrfs_key
*k1
, struct btrfs_key
*k2
);
2234 int btrfs_del_ptr(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
2235 struct btrfs_path
*path
, int level
, int slot
);
2236 enum btrfs_tree_block_status
2237 btrfs_check_node(struct btrfs_root
*root
, struct btrfs_disk_key
*parent_key
,
2238 struct extent_buffer
*buf
);
2239 enum btrfs_tree_block_status
2240 btrfs_check_leaf(struct btrfs_root
*root
, struct btrfs_disk_key
*parent_key
,
2241 struct extent_buffer
*buf
);
2242 void reada_for_search(struct btrfs_root
*root
, struct btrfs_path
*path
,
2243 int level
, int slot
, u64 objectid
);
2244 struct extent_buffer
*read_node_slot(struct btrfs_root
*root
,
2245 struct extent_buffer
*parent
, int slot
);
2246 int btrfs_previous_item(struct btrfs_root
*root
,
2247 struct btrfs_path
*path
, u64 min_objectid
,
2249 int btrfs_cow_block(struct btrfs_trans_handle
*trans
,
2250 struct btrfs_root
*root
, struct extent_buffer
*buf
,
2251 struct extent_buffer
*parent
, int parent_slot
,
2252 struct extent_buffer
**cow_ret
);
2253 int __btrfs_cow_block(struct btrfs_trans_handle
*trans
,
2254 struct btrfs_root
*root
,
2255 struct extent_buffer
*buf
,
2256 struct extent_buffer
*parent
, int parent_slot
,
2257 struct extent_buffer
**cow_ret
,
2258 u64 search_start
, u64 empty_size
);
2259 int btrfs_copy_root(struct btrfs_trans_handle
*trans
,
2260 struct btrfs_root
*root
,
2261 struct extent_buffer
*buf
,
2262 struct extent_buffer
**cow_ret
, u64 new_root_objectid
);
2263 int btrfs_extend_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
2264 *root
, struct btrfs_path
*path
, u32 data_size
);
2265 int btrfs_truncate_item(struct btrfs_trans_handle
*trans
,
2266 struct btrfs_root
*root
,
2267 struct btrfs_path
*path
,
2268 u32 new_size
, int from_end
);
2269 int btrfs_split_item(struct btrfs_trans_handle
*trans
,
2270 struct btrfs_root
*root
,
2271 struct btrfs_path
*path
,
2272 struct btrfs_key
*new_key
,
2273 unsigned long split_offset
);
2274 int btrfs_search_slot(struct btrfs_trans_handle
*trans
, struct btrfs_root
2275 *root
, struct btrfs_key
*key
, struct btrfs_path
*p
, int
2277 void btrfs_release_path(struct btrfs_path
*p
);
2278 void add_root_to_dirty_list(struct btrfs_root
*root
);
2279 struct btrfs_path
*btrfs_alloc_path(void);
2280 void btrfs_free_path(struct btrfs_path
*p
);
2281 void btrfs_init_path(struct btrfs_path
*p
);
2282 int btrfs_del_items(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
2283 struct btrfs_path
*path
, int slot
, int nr
);
2285 static inline int btrfs_del_item(struct btrfs_trans_handle
*trans
,
2286 struct btrfs_root
*root
,
2287 struct btrfs_path
*path
)
2289 return btrfs_del_items(trans
, root
, path
, path
->slots
[0], 1);
2292 int btrfs_insert_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
2293 *root
, struct btrfs_key
*key
, void *data
, u32 data_size
);
2294 int btrfs_insert_empty_items(struct btrfs_trans_handle
*trans
,
2295 struct btrfs_root
*root
,
2296 struct btrfs_path
*path
,
2297 struct btrfs_key
*cpu_key
, u32
*data_size
, int nr
);
2299 static inline int btrfs_insert_empty_item(struct btrfs_trans_handle
*trans
,
2300 struct btrfs_root
*root
,
2301 struct btrfs_path
*path
,
2302 struct btrfs_key
*key
,
2305 return btrfs_insert_empty_items(trans
, root
, path
, key
, &data_size
, 1);
2308 int btrfs_next_leaf(struct btrfs_root
*root
, struct btrfs_path
*path
);
2309 int btrfs_prev_leaf(struct btrfs_root
*root
, struct btrfs_path
*path
);
2310 int btrfs_leaf_free_space(struct btrfs_root
*root
, struct extent_buffer
*leaf
);
2311 void btrfs_fixup_low_keys(struct btrfs_root
*root
, struct btrfs_path
*path
,
2312 struct btrfs_disk_key
*key
, int level
);
2313 int btrfs_set_item_key_safe(struct btrfs_root
*root
, struct btrfs_path
*path
,
2314 struct btrfs_key
*new_key
);
2315 void btrfs_set_item_key_unsafe(struct btrfs_root
*root
,
2316 struct btrfs_path
*path
,
2317 struct btrfs_key
*new_key
);
2320 int btrfs_add_root_ref(struct btrfs_trans_handle
*trans
,
2321 struct btrfs_root
*tree_root
,
2322 u64 root_id
, u8 type
, u64 ref_id
,
2323 u64 dirid
, u64 sequence
,
2324 const char *name
, int name_len
);
2325 int btrfs_insert_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
2326 *root
, struct btrfs_key
*key
, struct btrfs_root_item
2328 int btrfs_update_root(struct btrfs_trans_handle
*trans
, struct btrfs_root
2329 *root
, struct btrfs_key
*key
, struct btrfs_root_item
2331 int btrfs_find_last_root(struct btrfs_root
*root
, u64 objectid
, struct
2332 btrfs_root_item
*item
, struct btrfs_key
*key
);
2334 int btrfs_insert_dir_item(struct btrfs_trans_handle
*trans
, struct btrfs_root
2335 *root
, const char *name
, int name_len
, u64 dir
,
2336 struct btrfs_key
*location
, u8 type
, u64 index
);
2337 struct btrfs_dir_item
*btrfs_lookup_dir_item(struct btrfs_trans_handle
*trans
,
2338 struct btrfs_root
*root
,
2339 struct btrfs_path
*path
, u64 dir
,
2340 const char *name
, int name_len
,
2342 int btrfs_insert_xattr_item(struct btrfs_trans_handle
*trans
,
2343 struct btrfs_root
*root
, const char *name
,
2344 u16 name_len
, const void *data
, u16 data_len
,
2347 int btrfs_find_free_objectid(struct btrfs_trans_handle
*trans
,
2348 struct btrfs_root
*fs_root
,
2349 u64 dirid
, u64
*objectid
);
2352 int btrfs_insert_inode_ref(struct btrfs_trans_handle
*trans
,
2353 struct btrfs_root
*root
,
2354 const char *name
, int name_len
,
2355 u64 inode_objectid
, u64 ref_objectid
, u64 index
);
2356 int btrfs_insert_inode(struct btrfs_trans_handle
*trans
, struct btrfs_root
2357 *root
, u64 objectid
, struct btrfs_inode_item
2359 int btrfs_lookup_inode(struct btrfs_trans_handle
*trans
, struct btrfs_root
2360 *root
, struct btrfs_path
*path
,
2361 struct btrfs_key
*location
, int mod
);
2364 int btrfs_del_csums(struct btrfs_trans_handle
*trans
,
2365 struct btrfs_root
*root
, u64 bytenr
, u64 len
);
2366 int btrfs_insert_file_extent(struct btrfs_trans_handle
*trans
,
2367 struct btrfs_root
*root
,
2368 u64 objectid
, u64 pos
, u64 offset
,
2371 int btrfs_insert_inline_extent(struct btrfs_trans_handle
*trans
,
2372 struct btrfs_root
*root
, u64 objectid
,
2373 u64 offset
, char *buffer
, size_t size
);
2374 int btrfs_csum_file_block(struct btrfs_trans_handle
*trans
,
2375 struct btrfs_root
*root
, u64 alloc_end
,
2376 u64 bytenr
, char *data
, size_t len
);
2377 int btrfs_csum_truncate(struct btrfs_trans_handle
*trans
,
2378 struct btrfs_root
*root
, struct btrfs_path
*path
,
2382 int btrfs_lookup_uuid_subvol_item(int fd
, const u8
*uuid
, u64
*subvol_id
);
2383 int btrfs_lookup_uuid_received_subvol_item(int fd
, const u8
*uuid
,