xfs: avoid double deferrals for RWF_DONTCACHE writes

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XFS already defers some writes to a workqueue when transactions are
needed to process the I/O completion. Disable the block layer bio task
completion in this case to avoid a major performance drop.

Fixes: efbde6f9f4 ("iomap: use BIO_COMPLETE_IN_TASK for dropbehind writeback")
Link: https://lore.kernel.org/all/8124341f-3af2-4a16-897d-38db5ab5a9d4@columbia.edu/
Signed-off-by: Tal Zussman <tz2294@columbia.edu>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260810-xfs-dontcache-double-defer-v1-1-aea7484b3e49@columbia.edu
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Tal Zussman 2026-08-10 12:39:19 -04:00 • committed by Jens Axboe

parent 06a2ff603f

commit 913dcbc567

1 changed files with 13 additions and 2 deletions

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fs/xfs/xfs_aops.c

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