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| author | Darrick J. Wong <djwong@kernel.org> | 2024-08-13 09:39:39 +0200 |
|---|---|---|
| committer | Chandan Babu R <chandanbabu@kernel.org> | 2024-09-03 10:07:38 +0530 |
| commit | f1204d96450fa7650dc27b8839df159a01998737 (patch) | |
| tree | ada24ee18b026bbda30070b88d35e3c08d0d0bb6 /fs/xfs/xfs_exchrange.c | |
| parent | 816e3599ca9b9bbfdc456433cc707e75f2c31104 (diff) | |
xfs: only free posteof blocks on first close
Certain workloads fragment files on XFS very badly, such as a software
package that creates a number of threads, each of which repeatedly run
the sequence: open a file, perform a synchronous write, and close the
file, which defeats the speculative preallocation mechanism. We work
around this problem by only deleting posteof blocks the /first/ time a
file is closed to preserve the behavior that unpacking a tarball lays
out files one after the other with no gaps.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
[hch: rebased, updated comment, renamed the flag]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
Diffstat (limited to 'fs/xfs/xfs_exchrange.c')
0 files changed, 0 insertions, 0 deletions