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Date: Sun, 1 Aug 2010 18:42:32 +0800 From: Wu Fengguang <fengguang.wu@...el.com> To: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> Cc: Andrew Morton <akpm@...ux-foundation.org>, Mel Gorman <mel@....ul.ie>, Minchan Kim <minchan.kim@...il.com>, Andy Whitcroft <apw@...dowen.org>, Rik van Riel <riel@...hat.com>, Christoph Hellwig <hch@...radead.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>, "linux-mm@...ck.org" <linux-mm@...ck.org>, Dave Chinner <david@...morbit.com>, Chris Mason <chris.mason@...cle.com>, Nick Piggin <npiggin@...e.de>, Johannes Weiner <hannes@...xchg.org>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>, Andrea Arcangeli <aarcange@...hat.com>, Andreas Mohr <andi@...as.de>, Bill Davidsen <davidsen@....com>, Ben Gamari <bgamari.foss@...il.com> Subject: Re: [PATCH] vmscan: synchronous lumpy reclaim don't call congestion_wait() > If the system 512MB memory, DEF_PRIORITY mean 128kB scan and It takes 4096 > shrink_page_list() calls to scan 128kB (i.e. 128kB/32=4096) memory. Err you must forgot the page size. 128kB means 128kB/4kB=32 pages which fit exactly into one SWAP_CLUSTER_MAX batch. The shrink_page_list() call times has nothing to do DEF_PRIORITY. Thanks, Fengguang -- 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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