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Date: Tue, 26 Jun 2012 09:12:32 +0900 From: Minchan Kim <minchan@...nel.org> To: Glauber Costa <glommer@...allels.com> CC: "linux-mm@...ck.org" <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>, Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>, KOSAKI Motohiro <kosaki.motohiro@...il.com>, Johannes Weiner <hannes@...xchg.org>, Andrea Arcangeli <aarcange@...hat.com>, Andrew Morton <akpm@...ux-foundation.org>, Anton Vorontsov <anton.vorontsov@...aro.org>, John Stultz <john.stultz@...aro.org>, Pekka Enberg <penberg@...nel.org>, Wu Fengguang <fengguang.wu@...el.com>, Hugh Dickins <hughd@...gle.com> Subject: Re: RFC: Easy-Reclaimable LRU list On 06/25/2012 05:46 PM, Glauber Costa wrote: > On 06/19/2012 09:49 AM, Minchan Kim wrote: >> Hi everybody! >> >> Recently, there are some efforts to handle system memory pressure. >> >> 1) low memory notification - [1] >> 2) fallocate(VOLATILE) - [2] >> 3) fadvise(NOREUSE) - [3] >> >> For them, I would like to add new LRU list, aka "Ereclaimable" which >> is opposite of "unevictable". >> Reclaimable LRU list includes_easy_ reclaimable pages. >> For example, easy reclaimable pages are following as. >> >> 1. invalidated but remained LRU list. >> 2. pageout pages for reclaim(PG_reclaim pages) >> 3. fadvise(NOREUSE) >> 4. fallocate(VOLATILE) >> >> Their pages shouldn't stir normal LRU list and compaction might not >> migrate them, even. > What about other things moving memory like CMA ? Sorry for not being able to understand your point. Can you elaborate a bit more? -- Kind regards, Minchan Kim -- 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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