RE: [PATCH/RFC] NOMMU: drop page cache whenever any alloc fails due to low memory

[Zhang, Sonic]

The reclaim is not that aggressive.

Sonic 

-----Original Message-----
From: Peter Zijlstra [mailto:peterz@xxxxxxxxxxxxx] 
Sent: Tuesday, July 14, 2009 10:31 PM
To: Mike Frysinger
Cc: linux-kernel@xxxxxxxxxxxxxxx;
uclinux-dist-devel@xxxxxxxxxxxxxxxxxxxx; 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@xxxxxxxxxx>
> 
> 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.
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