Messages in this thread | | | Subject | RE: [PATCH/RFC] NOMMU: drop page cache whenever any alloc fails due to low memory | From | Peter Zijlstra <> | Date | Wed, 15 Jul 2009 08:38:03 +0200 |
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Please don't top post.
On Wed, 2009-07-15 at 11:29 +0800, Zhang, Sonic wrote:
> From: Peter Zijlstra [mailto:peterz@infradead.org] > > Sent: Tuesday, July 14, 2009 10:31 PM > > To: Mike Frysinger > > Cc: linux-kernel@vger.kernel.org; > > uclinux-dist-devel@blackfin.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@analog.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?
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