2 * Copyright (C) 2007 Oracle. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
19 #define _XOPEN_SOURCE 600
24 #include <sys/types.h>
28 #include "kerncompat.h"
29 #include "radix-tree.h"
33 #include "transaction.h"
36 #include "print-tree.h"
38 static int check_tree_block(struct btrfs_root
*root
, struct extent_buffer
*buf
)
40 if (buf
->start
!= btrfs_header_bytenr(buf
))
43 if (memcmp_extent_buffer(buf
, root
->fs_info
->fsid
,
44 (unsigned long)btrfs_header_fsid(buf
),
50 u32
btrfs_csum_data(struct btrfs_root
*root
, char *data
, u32 seed
, size_t len
)
52 return crc32c(seed
, data
, len
);
55 void btrfs_csum_final(u32 crc
, char *result
)
57 *(__le32
*)result
= ~cpu_to_le32(crc
);
60 int csum_tree_block(struct btrfs_root
*root
, struct extent_buffer
*buf
,
63 char result
[BTRFS_CRC32_SIZE
];
67 len
= buf
->len
- BTRFS_CSUM_SIZE
;
68 crc
= crc32c(crc
, buf
->data
+ BTRFS_CSUM_SIZE
, len
);
69 btrfs_csum_final(crc
, result
);
72 if (memcmp_extent_buffer(buf
, result
, 0, BTRFS_CRC32_SIZE
)) {
73 printk("checksum verify failed on %llu wanted %X "
74 "found %X\n", (unsigned long long)buf
->start
,
75 *((int *)result
), *((int *)buf
));
79 write_extent_buffer(buf
, result
, 0, BTRFS_CRC32_SIZE
);
84 struct extent_buffer
*btrfs_find_tree_block(struct btrfs_root
*root
,
85 u64 bytenr
, u32 blocksize
)
87 return find_extent_buffer(&root
->fs_info
->extent_cache
,
91 struct extent_buffer
*btrfs_find_create_tree_block(struct btrfs_root
*root
,
92 u64 bytenr
, u32 blocksize
)
94 return alloc_extent_buffer(&root
->fs_info
->extent_cache
, bytenr
,
98 int readahead_tree_block(struct btrfs_root
*root
, u64 bytenr
, u32 blocksize
,
103 struct extent_buffer
*eb
;
105 struct btrfs_multi_bio
*multi
= NULL
;
106 struct btrfs_device
*device
;
108 eb
= btrfs_find_tree_block(root
, bytenr
, blocksize
);
109 if (eb
&& btrfs_buffer_uptodate(eb
)) {
110 free_extent_buffer(eb
);
116 ret
= btrfs_map_block(&root
->fs_info
->mapping_tree
, READ
,
117 bytenr
, &length
, &multi
, 0);
119 device
= multi
->stripes
[0].dev
;
121 blocksize
= min(blocksize
, (u32
)(64 * 1024));
122 readahead(device
->fd
, multi
->stripes
[0].physical
, blocksize
);
127 struct extent_buffer
*read_tree_block(struct btrfs_root
*root
, u64 bytenr
,
128 u32 blocksize
, u64 parent_transid
)
132 struct extent_buffer
*eb
;
134 struct btrfs_multi_bio
*multi
= NULL
;
135 struct btrfs_device
*device
;
139 eb
= btrfs_find_create_tree_block(root
, bytenr
, blocksize
);
143 if (btrfs_buffer_uptodate(eb
))
149 ret
= btrfs_map_block(&root
->fs_info
->mapping_tree
, READ
,
150 eb
->start
, &length
, &multi
, mirror_num
);
152 device
= multi
->stripes
[0].dev
;
155 eb
->dev_bytenr
= multi
->stripes
[0].physical
;
157 ret
= read_extent_from_disk(eb
);
158 if (ret
== 0 && check_tree_block(root
, eb
) == 0 &&
159 csum_tree_block(root
, eb
, 1) == 0) {
160 btrfs_set_buffer_uptodate(eb
);
163 num_copies
= btrfs_num_copies(&root
->fs_info
->mapping_tree
,
165 if (num_copies
== 1) {
166 printk("reading %Lu failed only one copy\n", eb
->start
);
170 if (mirror_num
> num_copies
) {
171 printk("bailing at mirror %d of %d\n", mirror_num
, num_copies
);
175 free_extent_buffer(eb
);
179 int write_tree_block(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
180 struct extent_buffer
*eb
)
185 struct btrfs_multi_bio
*multi
= NULL
;
187 if (check_tree_block(root
, eb
))
189 if (!btrfs_buffer_uptodate(eb
))
192 btrfs_set_header_flag(eb
, BTRFS_HEADER_FLAG_WRITTEN
);
193 csum_tree_block(root
, eb
, 0);
197 ret
= btrfs_map_block(&root
->fs_info
->mapping_tree
, WRITE
,
198 eb
->start
, &length
, &multi
, 0);
200 while(dev_nr
< multi
->num_stripes
) {
202 eb
->fd
= multi
->stripes
[dev_nr
].dev
->fd
;
203 eb
->dev_bytenr
= multi
->stripes
[dev_nr
].physical
;
204 multi
->stripes
[dev_nr
].dev
->total_ios
++;
206 ret
= write_extent_to_disk(eb
);
213 static int __setup_root(u32 nodesize
, u32 leafsize
, u32 sectorsize
,
214 u32 stripesize
, struct btrfs_root
*root
,
215 struct btrfs_fs_info
*fs_info
, u64 objectid
)
218 root
->commit_root
= NULL
;
219 root
->sectorsize
= sectorsize
;
220 root
->nodesize
= nodesize
;
221 root
->leafsize
= leafsize
;
222 root
->stripesize
= stripesize
;
224 root
->track_dirty
= 0;
226 root
->fs_info
= fs_info
;
227 root
->objectid
= objectid
;
228 root
->last_trans
= 0;
229 root
->highest_inode
= 0;
230 root
->last_inode_alloc
= 0;
232 INIT_LIST_HEAD(&root
->dirty_list
);
233 memset(&root
->root_key
, 0, sizeof(root
->root_key
));
234 memset(&root
->root_item
, 0, sizeof(root
->root_item
));
235 root
->root_key
.objectid
= objectid
;
239 static int update_cowonly_root(struct btrfs_trans_handle
*trans
,
240 struct btrfs_root
*root
)
244 struct btrfs_root
*tree_root
= root
->fs_info
->tree_root
;
246 btrfs_write_dirty_block_groups(trans
, root
);
248 old_root_bytenr
= btrfs_root_bytenr(&root
->root_item
);
249 if (old_root_bytenr
== root
->node
->start
)
251 btrfs_set_root_bytenr(&root
->root_item
,
253 root
->root_item
.level
= btrfs_header_level(root
->node
);
254 ret
= btrfs_update_root(trans
, tree_root
,
258 btrfs_write_dirty_block_groups(trans
, root
);
263 static int commit_tree_roots(struct btrfs_trans_handle
*trans
,
264 struct btrfs_fs_info
*fs_info
)
266 struct btrfs_root
*root
;
267 struct list_head
*next
;
269 while(!list_empty(&fs_info
->dirty_cowonly_roots
)) {
270 next
= fs_info
->dirty_cowonly_roots
.next
;
272 root
= list_entry(next
, struct btrfs_root
, dirty_list
);
273 update_cowonly_root(trans
, root
);
278 static int __commit_transaction(struct btrfs_trans_handle
*trans
,
279 struct btrfs_root
*root
)
283 struct extent_buffer
*eb
;
284 struct extent_io_tree
*tree
= &root
->fs_info
->extent_cache
;
288 ret
= find_first_extent_bit(tree
, 0, &start
, &end
,
292 while(start
<= end
) {
293 eb
= find_first_extent_buffer(tree
, start
);
294 BUG_ON(!eb
|| eb
->start
!= start
);
295 ret
= write_tree_block(trans
, root
, eb
);
298 clear_extent_buffer_dirty(eb
);
299 free_extent_buffer(eb
);
305 int btrfs_commit_transaction(struct btrfs_trans_handle
*trans
,
306 struct btrfs_root
*root
)
309 struct btrfs_root
*new_root
= NULL
;
310 struct btrfs_fs_info
*fs_info
= root
->fs_info
;
312 if (root
->commit_root
== root
->node
)
315 new_root
= malloc(sizeof(*new_root
));
318 memcpy(new_root
, root
, sizeof(*new_root
));
319 new_root
->node
= root
->commit_root
;
320 root
->commit_root
= NULL
;
322 root
->root_key
.offset
= trans
->transid
;
323 btrfs_set_root_bytenr(&root
->root_item
, root
->node
->start
);
324 root
->root_item
.level
= btrfs_header_level(root
->node
);
325 ret
= btrfs_insert_root(trans
, fs_info
->tree_root
,
326 &root
->root_key
, &root
->root_item
);
329 btrfs_set_root_refs(&new_root
->root_item
, 0);
330 ret
= btrfs_update_root(trans
, root
->fs_info
->tree_root
,
331 &new_root
->root_key
, &new_root
->root_item
);
334 ret
= commit_tree_roots(trans
, fs_info
);
336 ret
= __commit_transaction(trans
, root
);
338 write_ctree_super(trans
, root
);
339 btrfs_finish_extent_commit(trans
, fs_info
->extent_root
,
340 &fs_info
->pinned_extents
);
341 btrfs_free_transaction(root
, trans
);
342 fs_info
->running_transaction
= NULL
;
344 trans
= btrfs_start_transaction(root
, 1);
345 ret
= btrfs_drop_snapshot(trans
, new_root
);
347 ret
= btrfs_del_root(trans
, fs_info
->tree_root
, &new_root
->root_key
);
350 ret
= commit_tree_roots(trans
, fs_info
);
352 ret
= __commit_transaction(trans
, root
);
354 write_ctree_super(trans
, root
);
355 btrfs_finish_extent_commit(trans
, fs_info
->extent_root
,
356 &fs_info
->pinned_extents
);
357 btrfs_free_transaction(root
, trans
);
358 free_extent_buffer(root
->commit_root
);
359 root
->commit_root
= NULL
;
360 fs_info
->running_transaction
= NULL
;
362 free_extent_buffer(new_root
->node
);
368 static int find_and_setup_root(struct btrfs_root
*tree_root
,
369 struct btrfs_fs_info
*fs_info
,
370 u64 objectid
, struct btrfs_root
*root
)
375 __setup_root(tree_root
->nodesize
, tree_root
->leafsize
,
376 tree_root
->sectorsize
, tree_root
->stripesize
,
377 root
, fs_info
, objectid
);
378 ret
= btrfs_find_last_root(tree_root
, objectid
,
379 &root
->root_item
, &root
->root_key
);
382 blocksize
= btrfs_level_size(root
, btrfs_root_level(&root
->root_item
));
383 root
->node
= read_tree_block(root
, btrfs_root_bytenr(&root
->root_item
),
389 int btrfs_free_fs_root(struct btrfs_fs_info
*fs_info
, struct btrfs_root
*root
)
392 free_extent_buffer(root
->node
);
393 if (root
->commit_root
)
394 free_extent_buffer(root
->commit_root
);
400 struct btrfs_root
*btrfs_read_fs_root(struct btrfs_fs_info
*fs_info
,
401 struct btrfs_key
*location
)
403 struct btrfs_root
*root
;
404 struct btrfs_root
*tree_root
= fs_info
->tree_root
;
405 struct btrfs_path
*path
;
406 struct extent_buffer
*l
;
410 root
= malloc(sizeof(*root
));
412 return ERR_PTR(-ENOMEM
);
413 memset(root
, 0, sizeof(*root
));
414 if (location
->offset
== (u64
)-1) {
415 ret
= find_and_setup_root(tree_root
, fs_info
,
416 location
->objectid
, root
);
424 __setup_root(tree_root
->nodesize
, tree_root
->leafsize
,
425 tree_root
->sectorsize
, tree_root
->stripesize
,
426 root
, fs_info
, location
->objectid
);
428 path
= btrfs_alloc_path();
430 ret
= btrfs_search_slot(NULL
, tree_root
, location
, path
, 0, 0);
437 read_extent_buffer(l
, &root
->root_item
,
438 btrfs_item_ptr_offset(l
, path
->slots
[0]),
439 sizeof(root
->root_item
));
440 memcpy(&root
->root_key
, location
, sizeof(*location
));
443 btrfs_release_path(root
, path
);
444 btrfs_free_path(path
);
449 blocksize
= btrfs_level_size(root
, btrfs_root_level(&root
->root_item
));
450 root
->node
= read_tree_block(root
, btrfs_root_bytenr(&root
->root_item
),
458 struct btrfs_root
*open_ctree(const char *filename
, u64 sb_bytenr
, int writes
)
461 struct btrfs_root
*root
;
462 int flags
= O_CREAT
| O_RDWR
;
467 fp
= open(filename
, flags
, 0600);
471 root
= open_ctree_fd(fp
, filename
, sb_bytenr
, writes
);
477 struct btrfs_root
*open_ctree_fd(int fp
, const char *path
, u64 sb_bytenr
,
485 struct btrfs_root
*root
= malloc(sizeof(struct btrfs_root
));
486 struct btrfs_root
*tree_root
= malloc(sizeof(struct btrfs_root
));
487 struct btrfs_root
*extent_root
= malloc(sizeof(struct btrfs_root
));
488 struct btrfs_root
*chunk_root
= malloc(sizeof(struct btrfs_root
));
489 struct btrfs_root
*dev_root
= malloc(sizeof(struct btrfs_root
));
490 struct btrfs_fs_info
*fs_info
= malloc(sizeof(*fs_info
));
492 struct btrfs_super_block
*disk_super
;
493 struct btrfs_fs_devices
*fs_devices
= NULL
;
497 sb_bytenr
= BTRFS_SUPER_INFO_OFFSET
;
499 ret
= btrfs_scan_one_device(fp
, path
, &fs_devices
,
500 &total_devs
, sb_bytenr
);
503 fprintf(stderr
, "No valid Btrfs found on %s\n", path
);
507 if (total_devs
!= 1) {
508 ret
= btrfs_scan_for_fsid(fs_devices
, total_devs
, 1);
512 memset(fs_info
, 0, sizeof(*fs_info
));
513 fs_info
->fs_root
= root
;
514 fs_info
->tree_root
= tree_root
;
515 fs_info
->extent_root
= extent_root
;
516 fs_info
->chunk_root
= chunk_root
;
517 fs_info
->dev_root
= dev_root
;
520 fs_info
->readonly
= 1;
522 extent_io_tree_init(&fs_info
->extent_cache
);
523 extent_io_tree_init(&fs_info
->free_space_cache
);
524 extent_io_tree_init(&fs_info
->block_group_cache
);
525 extent_io_tree_init(&fs_info
->pinned_extents
);
526 extent_io_tree_init(&fs_info
->pending_del
);
527 extent_io_tree_init(&fs_info
->extent_ins
);
529 cache_tree_init(&fs_info
->mapping_tree
.cache_tree
);
531 mutex_init(&fs_info
->fs_mutex
);
532 fs_info
->fs_devices
= fs_devices
;
533 INIT_LIST_HEAD(&fs_info
->dirty_cowonly_roots
);
534 INIT_LIST_HEAD(&fs_info
->space_info
);
536 __setup_root(4096, 4096, 4096, 4096, tree_root
,
537 fs_info
, BTRFS_ROOT_TREE_OBJECTID
);
540 ret
= btrfs_open_devices(fs_devices
, O_RDWR
);
542 ret
= btrfs_open_devices(fs_devices
, O_RDONLY
);
545 ret
= btrfs_bootstrap_super_map(&fs_info
->mapping_tree
, fs_devices
);
547 fs_info
->sb_buffer
= btrfs_find_create_tree_block(tree_root
, sb_bytenr
,
549 BUG_ON(!fs_info
->sb_buffer
);
550 fs_info
->sb_buffer
->fd
= fs_devices
->latest_bdev
;
551 fs_info
->sb_buffer
->dev_bytenr
= sb_bytenr
;
552 ret
= read_extent_from_disk(fs_info
->sb_buffer
);
554 btrfs_set_buffer_uptodate(fs_info
->sb_buffer
);
556 read_extent_buffer(fs_info
->sb_buffer
, &fs_info
->super_copy
, 0,
557 sizeof(fs_info
->super_copy
));
558 read_extent_buffer(fs_info
->sb_buffer
, fs_info
->fsid
,
559 (unsigned long)btrfs_super_fsid(fs_info
->sb_buffer
),
562 disk_super
= &fs_info
->super_copy
;
563 if (strncmp((char *)(&disk_super
->magic
), BTRFS_MAGIC
,
564 sizeof(disk_super
->magic
))) {
565 printk("No valid btrfs found\n");
568 nodesize
= btrfs_super_nodesize(disk_super
);
569 leafsize
= btrfs_super_leafsize(disk_super
);
570 sectorsize
= btrfs_super_sectorsize(disk_super
);
571 stripesize
= btrfs_super_stripesize(disk_super
);
572 tree_root
->nodesize
= nodesize
;
573 tree_root
->leafsize
= leafsize
;
574 tree_root
->sectorsize
= sectorsize
;
575 tree_root
->stripesize
= stripesize
;
577 ret
= btrfs_read_super_device(tree_root
, fs_info
->sb_buffer
);
579 ret
= btrfs_read_sys_array(tree_root
);
581 blocksize
= btrfs_level_size(tree_root
,
582 btrfs_super_chunk_root_level(disk_super
));
584 __setup_root(nodesize
, leafsize
, sectorsize
, stripesize
,
585 chunk_root
, fs_info
, BTRFS_CHUNK_TREE_OBJECTID
);
587 chunk_root
->node
= read_tree_block(chunk_root
,
588 btrfs_super_chunk_root(disk_super
),
591 BUG_ON(!chunk_root
->node
);
593 read_extent_buffer(chunk_root
->node
, fs_info
->chunk_tree_uuid
,
594 (unsigned long)btrfs_header_chunk_tree_uuid(chunk_root
->node
),
597 ret
= btrfs_read_chunk_tree(chunk_root
);
600 blocksize
= btrfs_level_size(tree_root
,
601 btrfs_super_root_level(disk_super
));
603 tree_root
->node
= read_tree_block(tree_root
,
604 btrfs_super_root(disk_super
),
606 BUG_ON(!tree_root
->node
);
607 ret
= find_and_setup_root(tree_root
, fs_info
,
608 BTRFS_EXTENT_TREE_OBJECTID
, extent_root
);
610 extent_root
->track_dirty
= 1;
612 ret
= find_and_setup_root(tree_root
, fs_info
,
613 BTRFS_DEV_TREE_OBJECTID
, dev_root
);
615 dev_root
->track_dirty
= 1;
617 ret
= find_and_setup_root(tree_root
, fs_info
,
618 BTRFS_FS_TREE_OBJECTID
, root
);
621 fs_info
->generation
= btrfs_super_generation(disk_super
) + 1;
622 btrfs_read_block_groups(root
);
624 fs_info
->data_alloc_profile
= (u64
)-1;
625 fs_info
->metadata_alloc_profile
= (u64
)-1;
626 fs_info
->system_alloc_profile
= fs_info
->metadata_alloc_profile
;
631 int write_all_supers(struct btrfs_root
*root
)
633 struct list_head
*cur
;
634 struct list_head
*head
= &root
->fs_info
->fs_devices
->devices
;
635 struct btrfs_device
*dev
;
636 struct extent_buffer
*sb
;
637 struct btrfs_dev_item
*dev_item
;
640 sb
= root
->fs_info
->sb_buffer
;
641 dev_item
= (struct btrfs_dev_item
*)offsetof(struct btrfs_super_block
,
643 list_for_each(cur
, head
) {
644 dev
= list_entry(cur
, struct btrfs_device
, dev_list
);
645 btrfs_set_device_type(sb
, dev_item
, dev
->type
);
646 btrfs_set_device_id(sb
, dev_item
, dev
->devid
);
647 btrfs_set_device_total_bytes(sb
, dev_item
, dev
->total_bytes
);
648 btrfs_set_device_bytes_used(sb
, dev_item
, dev
->bytes_used
);
649 btrfs_set_device_io_align(sb
, dev_item
, dev
->io_align
);
650 btrfs_set_device_io_width(sb
, dev_item
, dev
->io_width
);
651 btrfs_set_device_sector_size(sb
, dev_item
, dev
->sector_size
);
652 write_extent_buffer(sb
, dev
->uuid
,
653 (unsigned long)btrfs_device_uuid(dev_item
),
656 sb
->dev_bytenr
= sb
->start
;
657 btrfs_set_header_flag(sb
, BTRFS_HEADER_FLAG_WRITTEN
);
658 csum_tree_block(root
, sb
, 0);
659 ret
= write_extent_to_disk(sb
);
665 int write_ctree_super(struct btrfs_trans_handle
*trans
,
666 struct btrfs_root
*root
)
669 struct btrfs_root
*tree_root
= root
->fs_info
->tree_root
;
670 struct btrfs_root
*chunk_root
= root
->fs_info
->chunk_root
;
672 if (root
->fs_info
->readonly
)
675 btrfs_set_super_generation(&root
->fs_info
->super_copy
,
677 btrfs_set_super_root(&root
->fs_info
->super_copy
,
678 tree_root
->node
->start
);
679 btrfs_set_super_root_level(&root
->fs_info
->super_copy
,
680 btrfs_header_level(tree_root
->node
));
681 btrfs_set_super_chunk_root(&root
->fs_info
->super_copy
,
682 chunk_root
->node
->start
);
683 btrfs_set_super_chunk_root_level(&root
->fs_info
->super_copy
,
684 btrfs_header_level(chunk_root
->node
));
685 write_extent_buffer(root
->fs_info
->sb_buffer
,
686 &root
->fs_info
->super_copy
, 0,
687 sizeof(root
->fs_info
->super_copy
));
688 ret
= write_all_supers(root
);
690 fprintf(stderr
, "failed to write new super block err %d\n", ret
);
694 static int close_all_devices(struct btrfs_fs_info
*fs_info
)
696 struct list_head
*list
;
697 struct list_head
*next
;
698 struct btrfs_device
*device
;
702 list
= &fs_info
->fs_devices
->devices
;
703 list_for_each(next
, list
) {
704 device
= list_entry(next
, struct btrfs_device
, dev_list
);
710 int close_ctree(struct btrfs_root
*root
)
713 struct btrfs_trans_handle
*trans
;
714 struct btrfs_fs_info
*fs_info
= root
->fs_info
;
716 trans
= btrfs_start_transaction(root
, 1);
717 btrfs_commit_transaction(trans
, root
);
718 trans
= btrfs_start_transaction(root
, 1);
719 ret
= commit_tree_roots(trans
, root
->fs_info
);
721 ret
= __commit_transaction(trans
, root
);
723 write_ctree_super(trans
, root
);
724 btrfs_free_transaction(root
, trans
);
725 btrfs_free_block_groups(root
->fs_info
);
727 free_extent_buffer(root
->node
);
728 if (root
->fs_info
->extent_root
->node
)
729 free_extent_buffer(root
->fs_info
->extent_root
->node
);
730 if (root
->fs_info
->tree_root
->node
)
731 free_extent_buffer(root
->fs_info
->tree_root
->node
);
732 free_extent_buffer(root
->commit_root
);
733 free_extent_buffer(root
->fs_info
->sb_buffer
);
735 if (root
->fs_info
->chunk_root
->node
);
736 free_extent_buffer(root
->fs_info
->chunk_root
->node
);
738 if (root
->fs_info
->dev_root
->node
);
739 free_extent_buffer(root
->fs_info
->dev_root
->node
);
741 close_all_devices(root
->fs_info
);
742 extent_io_tree_cleanup(&fs_info
->extent_cache
);
743 extent_io_tree_cleanup(&fs_info
->free_space_cache
);
744 extent_io_tree_cleanup(&fs_info
->block_group_cache
);
745 extent_io_tree_cleanup(&fs_info
->pinned_extents
);
746 extent_io_tree_cleanup(&fs_info
->pending_del
);
747 extent_io_tree_cleanup(&fs_info
->extent_ins
);
749 free(fs_info
->tree_root
);
750 free(fs_info
->extent_root
);
751 free(fs_info
->fs_root
);
752 free(fs_info
->chunk_root
);
753 free(fs_info
->dev_root
);
759 int clean_tree_block(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
760 struct extent_buffer
*eb
)
762 return clear_extent_buffer_dirty(eb
);
765 int wait_on_tree_block_writeback(struct btrfs_root
*root
,
766 struct extent_buffer
*eb
)
771 void btrfs_mark_buffer_dirty(struct extent_buffer
*eb
)
773 set_extent_buffer_dirty(eb
);
776 int btrfs_buffer_uptodate(struct extent_buffer
*eb
)
778 return extent_buffer_uptodate(eb
);
781 int btrfs_set_buffer_uptodate(struct extent_buffer
*eb
)
783 return set_extent_buffer_uptodate(eb
);