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| author |   Li Zefan <lizefan@huawei.com> | 2012-06-11 16:03:35 +0800 |
|---|---|---|
| committer |   Chris Mason <chris.mason@oracle.com> | 2012-06-14 21:30:55 -0400 |
| commit | 6c282eb40ed6f64a51ff447707714df551d85b8e (patch) | |
| tree | 97d8a780a577d21c0f237f2140f3a129f40096bf /fs/attr.c | |
| parent | Btrfs: call filemap_fdatawrite twice for compression (diff) | |
| download | linux-dev-6c282eb40ed6f64a51ff447707714df551d85b8e.tar.xz linux-dev-6c282eb40ed6f64a51ff447707714df551d85b8e.zip | |
Btrfs: fix defrag regression
If a file has 3 small extents:
| ext1 | ext2 | ext3 |
Running "btrfs fi defrag" will only defrag the last two extents, if those
extent mappings hasn't been read into memory from disk.
This bug was introduced by commit 17ce6ef8d731af5edac8c39e806db4c7e1f6956f
("Btrfs: add a check to decide if we should defrag the range")
The cause is, that commit looked into previous and next extents using
lookup_extent_mapping() only.
While at it, remove the code that checks the previous extent, since
it's sufficient to check the next extent.
Signed-off-by: Li Zefan <lizefan@huawei.com>
Diffstat (limited to 'fs/attr.c')
0 files changed, 0 insertions, 0 deletions