Re: unresponsiveness on linux desktop during file copy

[Rik van Riel <riel@redhat.com>]

Ray Lee wrote:
> On Fri, May 15, 2009 at 12:33 PM, Christoph Lameter
> <cl@linux-foundation.org> wrote:
>> On Fri, 15 May 2009, Ray Lee wrote:
>>
>>> Which kernel version? If it's something recent, your programs may be
>>> getting swapped out due to a flaw in the latest kernels, where it
>>> accidentally prefers caching file data over mapped pages. If that's
>>> the case, Rik (cc:d) is working on patches to address the issue, and
>>> may appreciate another tester.
>> Please keep me in the loop. I'd be interested if those patches work and
>> what effect they have.
> 
> Whoops, looks like Wu Fengguang (cc:d), not Rik, has been working on
> those patches. See the messages starting with "[PATCH 0/3] make mapped
> executable pages the first class citizen" [
> http://lkml.org/lkml/2009/5/16/23 ]

We both have.  Wu's patches build on a patch of mine, which
Andrew has already merged into -mm.

http://lkml.org/lkml/2009/4/29/489

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