On Fri, Mar 16, 2012 at 01:55:44PM -0400, Christoph Hellwig wrote: > Provide a variant of xlog_assign_tail_lsn that has the AIL lock already > held. By doing so we do an additional atomic_read + atomic_set under > the lock, which comes down to two instructions. > > Switch xfs_trans_ail_update_bulk and xfs_trans_ail_delete_bulk to the > new version to reduce the number of lock roundtrips, and prepare for > a new addition that would require a third lock roundtrip in > xfs_trans_ail_delete_bulk. What new addition is that? I don't see it in this patchset (maybe I'm just blind), so maybe this isn't necessary in the commit message? Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
