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| author | Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com> | 2016-07-25 15:51:38 +0800 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2016-08-25 03:58:24 -0700 |
| commit | dcb40c196fc85c6dfb28456480e5a882e26f567d (patch) | |
| tree | 7cd6cdb47c6e1c970f20c708fea15c65a67f6dcf /fs | |
| parent | df2c95f33e0a28b22509e4ee85365eedf32a1056 (diff) | |
| download | linux-dcb40c196fc85c6dfb28456480e5a882e26f567d.tar.gz linux-dcb40c196fc85c6dfb28456480e5a882e26f567d.tar.bz2 linux-dcb40c196fc85c6dfb28456480e5a882e26f567d.zip | |
btrfs: use correct offset for reloc_inode in prealloc_file_extent_cluster()
In prealloc_file_extent_cluster(), btrfs_check_data_free_space() uses
wrong file offset for reloc_inode, it uses cluster->start and cluster->end,
which indeed are extent's bytenr. The correct value should be
cluster->[start|end] minus block group's start bytenr.
start bytenr cluster->start
| | extent | extent | ...| extent |
|----------------------------------------------------------------|
| block group reloc_inode |
Signed-off-by: Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/relocation.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 27480ef9813c..71b4b70f56b9 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -3038,12 +3038,14 @@ int prealloc_file_extent_cluster(struct inode *inode, u64 num_bytes; int nr = 0; int ret = 0; + u64 prealloc_start = cluster->start - offset; + u64 prealloc_end = cluster->end - offset; BUG_ON(cluster->start != cluster->boundary[0]); inode_lock(inode); - ret = btrfs_check_data_free_space(inode, cluster->start, - cluster->end + 1 - cluster->start); + ret = btrfs_check_data_free_space(inode, prealloc_start, + prealloc_end + 1 - prealloc_start); if (ret) goto out; @@ -3064,8 +3066,8 @@ int prealloc_file_extent_cluster(struct inode *inode, break; nr++; } - btrfs_free_reserved_data_space(inode, cluster->start, - cluster->end + 1 - cluster->start); + btrfs_free_reserved_data_space(inode, prealloc_start, + prealloc_end + 1 - prealloc_start); out: inode_unlock(inode); return ret; |