https://github.com/torvalds/linux
Revision bc6e588a8971aa74c02e42db4d6e0248679f3738 authored by Christoph Hellwig on 11 October 2011, 15:14:08 UTC, committed by Alex Elder on 11 October 2011, 16:02:48 UTC
If an item was locked we should not update xa_last_pushed_lsn and thus skip
it when restarting the AIL scan as we need to be able to lock and write it
out as soon as possible.  Otherwise heavy lock contention might starve AIL
pushing too easily, especially given the larger backoff once we moved
xa_last_pushed_lsn all the way to the target lsn.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Stefan Priebe <s.priebe@profihost.ag>
Tested-by: Stefan Priebe <s.priebe@profihost.ag>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>


1 parent 65112dc
History
Tip revision: bc6e588a8971aa74c02e42db4d6e0248679f3738 authored by Christoph Hellwig on 11 October 2011, 15:14:08 UTC
xfs: do not update xa_last_pushed_lsn for locked items
Tip revision: bc6e588
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