On Thu, Apr 11, 2013 at 08:57:53PM +0100, Mel Gorman wrote: > Page reclaim at priority 0 will scan the entire LRU as priority 0 is > considered to be a near OOM condition. Kswapd can reach priority 0 quite > easily if it is encountering a large number of pages it cannot reclaim > such as pages under writeback. When this happens, kswapd reclaims very > aggressively even though there may be no real risk of allocation failure > or OOM. > > This patch prevents kswapd reaching priority 0 and trying to reclaim > the world. Direct reclaimers will still reach priority 0 in the event > of an OOM situation. > > Signed-off-by: Mel Gorman <mgor...@suse.de> > Acked-by: Rik van Riel <r...@redhat.com> > Reviewed-by: Michal Hocko <mho...@suse.cz>
Acked-by: Johannes Weiner <han...@cmpxchg.org> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
