diff options
| author | Mark Fasheh <[email protected]> | 2015-06-08 22:05:25 +0000 |
|---|---|---|
| committer | Chris Mason <[email protected]> | 2015-06-10 14:02:50 +0000 |
| commit | e1d227a42ea2b4664f94212bd1106b9a3413ffb8 (patch) | |
| tree | e14df0ebdf2241ee848607f06fc39cef6d5c1db4 /fs/btrfs/async-thread.h | |
| parent | Btrfs: btrfs_defrag_file: Fix calculation of max_to_defrag. (diff) | |
| download | kernel-e1d227a42ea2b4664f94212bd1106b9a3413ffb8.tar.gz kernel-e1d227a42ea2b4664f94212bd1106b9a3413ffb8.zip | |
btrfs: Handle unaligned length in extent_same
The extent-same code rejects requests with an unaligned length. This
poses a problem when we want to dedupe the tail extent of files as we
skip cloning the portion between i_size and the extent boundary.
If we don't clone the entire extent, it won't be deleted. So the
combination of these behaviors winds up giving us worst-case dedupe on
many files.
We can fix this by allowing a length that extents to i_size and
internally aligining those to the end of the block. This is what
btrfs_ioctl_clone() so we can just copy that check over.
Signed-off-by: Mark Fasheh <[email protected]>
Signed-off-by: Chris Mason <[email protected]>
Diffstat (limited to 'fs/btrfs/async-thread.h')
0 files changed, 0 insertions, 0 deletions