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Date: Tue, 16 Jan 2007 10:34:52 +0800 From: "Roy Huang" <royhuang9@...il.com> To: balbir@...ibm.com Cc: linux-kernel@...r.kernel.org, aubreylee@...il.com, nickpiggin@...oo.com.au, torvalds@...l.org Subject: Re: [PATCH] Provide an interface to limit total page cache. Hi Balbir, Thanks for your comment. On 1/15/07, Balbir Singh <balbir@...ibm.com> wrote: > wakeup_kswapd and shrink_all_memory use swappiness to determine what to reclaim > (mapped pages or page cache). This patch does not ensure that only > page cache is > reclaimed/limited. If the swappiness value is high, mapped pages will be hit. > You are right, it is possible to release mapped pages. It can be avoided by add a field in "struct scan_control" to determine whether mapped pages will be released. > One could get similar functionality by implementing resource management. > > Resource management splits tasks into groups and does management of > resources for the > groups rather than the whole system. Such a facility will come with a > resource controller for > memory (split into finer grain rss/page cache/mlock'ed memory, etc), > one for cpu, etc. I s there any more information in detail about resource controller? Even there is a resource controller for tasks, all memory is also possbile to be eaten up by page cache. > > Balbir > - 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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