xfs: reduce ilock acquisitions in xfs_file_fsync

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If the inode is not pinned by the time fsync is called we don't need the
ilock to protect against concurrent clearing of ili_fsync_fields as the
inode won't need a log flush or clearing of these fields.  Not taking
the iolock allows for full concurrency of fsync and thus O_DSYNC
completions with io_uring/aio write submissions.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>

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Christoph Hellwig 2021-01-22 16:48:25 -08:00 • committed by Darrick J. Wong

parent f22c7f8777

commit ae29e4220f

1 changed files with 8 additions and 1 deletions

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fs/xfs/xfs_file.c

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