xfs: reduce ilock roundtrips in xfs_qm_vop_dqalloc

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xfs_qm_vop_dqalloc only needs the (exclusive) ilock for attaching dquots
to the inode if not done so yet.  All the other locks don't touch the inode
and don't need the ilock - the i_rwsem / iolock protects against changes
to the IDs while we are in a method, and the ilock would not help because
dropping it for the dqget calls would be racy anyway.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

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Christoph Hellwig 2025-11-10 14:23:10 +01:00 • committed by Carlos Maiolino

parent 13d3c1a045

commit 6a7bb6ccd0

1 changed files with 3 additions and 29 deletions

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fs/xfs/xfs_qm.c

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