On Thu, 2011-04-07 at 11:57 +1000, Dave Chinner wrote: > From: Dave Chinner <dchinner@xxxxxxxxxx> > > When we are short on memory, we want to expedite the cleaning of > dirty objects. Hence when we run short on memory, we need to kick > the AIL flushing into action to clean as many dirty objects as > quickly as possible. To implement this, sample the lsn of the log > item at the head of the AIL and use that as the push target for the > AIL flush. > > Further, we keep items in the AIL that are dirty that are not > tracked any other way, so we can get objects sitting in the AIL that > don't get written back until the AIL is pushed. Hence to get the > filesystem to the idle state, we might need to push the AIL to flush > out any remaining dirty objects sitting in the AIL. This requires > the same push mechanism as the reclaim push. > > This patch also renames xfs_trans_ail_tail() to xfs_ail_min_lsn() to > match the new xfs_ail_max_lsn() function introduced in this patch. > Similarly for xfs_trans_ail_push -> xfs_ail_push. > > Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx> Looks OK to me. Reviewed-by: Alex Elder <aelder@xxxxxxx> _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
