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Date: Wed, 15 Jul 2009 08:38:03 +0200 From: Peter Zijlstra <peterz@...radead.org> To: "Zhang, Sonic" <Sonic.Zhang@...log.com> Cc: Mike Frysinger <vapier@...too.org>, linux-kernel@...r.kernel.org, uclinux-dist-devel@...ckfin.uclinux.org, David Howells <dhowells@...hat.com> Subject: RE: [PATCH/RFC] NOMMU: drop page cache whenever any alloc fails due to low memory Please don't top post. On Wed, 2009-07-15 at 11:29 +0800, Zhang, Sonic wrote: > From: Peter Zijlstra [mailto:peterz@...radead.org] > > Sent: Tuesday, July 14, 2009 10:31 PM > > To: Mike Frysinger > > Cc: linux-kernel@...r.kernel.org; > > uclinux-dist-devel@...ckfin.uclinux.org; Zhang, Sonic; David Howells > > Subject: Re: [PATCH/RFC] NOMMU: drop page cache whenever any alloc fails > > due to low memory > > > > On Tue, 2009-07-14 at 10:22 -0400, Mike Frysinger wrote: > > > From: Sonic Zhang <sonic.zhang@...log.com> > > > > > > Since no-mmu systems tend to be memory constrained, we want to drop > > > all of the page cache whenever memory gets low. The only other option > > > > > is to invoke the oom killer, and clearly that's not ideal. > > > > Uhm,.. normally reclaim will already try to drop pagecache. > The reclaim is not that aggressive. Well, then maybe we should fix that instead? -- 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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