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Message-ID: <20120130103612.GB25268@csn.ul.ie> Date: Mon, 30 Jan 2012 10:36:13 +0000 From: Mel Gorman <mel@....ul.ie> To: Rik van Riel <riel@...hat.com> Cc: linux-mm@...ck.org, lkml <linux-kernel@...r.kernel.org>, Andrea Arcangeli <aarcange@...hat.com>, Johannes Weiner <hannes@...xchg.org>, Andrew Morton <akpm@...ux-foundation.org>, Minchan Kim <minchan.kim@...il.com>, KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> Subject: Re: [PATCH v3 -mm 1/3] mm: reclaim at order 0 when compaction is enabled On Thu, Jan 26, 2012 at 02:59:14PM -0500, Rik van Riel wrote: > When built with CONFIG_COMPACTION, kswapd should not try to free > contiguous pages, because it is not trying hard enough to have > a real chance at being successful, but still disrupts the LRU > enough to break other things. > > Do not do higher order page isolation unless we really are in > lumpy reclaim mode. > > Stop reclaiming pages once we have enough free pages that > compaction can deal with things, and we hit the normal order 0 > watermarks used by kswapd. > > Also remove a line of code that increments balanced right before > exiting the function. > > Signed-off-by: Rik van Riel <riel@...hat.com> Acked-by: Mel Gorman <mel@....ul.ie> -- Mel Gorman SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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