From: Andrew Morton <akpm@linux-foundation.org>
To: Christoph Lameter <clameter@sgi.com>
Cc: Ravikiran G Thirumalai <kiran@scalex86.org>,
linux-mm@kvack.org, shai@scalex86.org
Subject: Re: [rfc] [patch] mm: zone_reclaim fix for pseudo file systems
Date: Mon, 30 Jul 2007 21:47:56 -0700 [thread overview]
Message-ID: <20070730214756.c4211678.akpm@linux-foundation.org> (raw)
In-Reply-To: <Pine.LNX.4.64.0707301934300.27364@schroedinger.engr.sgi.com>
On Mon, 30 Jul 2007 19:36:04 -0700 (PDT) Christoph Lameter <clameter@sgi.com> wrote:
> On Mon, 30 Jul 2007, Andrew Morton wrote:
>
> > That makes sense, but any fix we do here won't fix things for regular
> > reclaim.
>
> Standard reclaim has the same issues. It uselessly keeps
> scanning the unreclaimable file backed pages.
Well it shouldn't. That's what all_unreclaimable is for. And it does
work. Or used to, five years ago. Stuff like this has a habit of breaking
because we don't have a test suite.
> Fixing this will also
> enhance regular reclaim.
>
> > - account file-backed pages, BDI_CAP_NO_ACCT_DIRTY pages and
> > BDI_CAP_NO_WRITEBACK separately. ie: zone accounting pretty
> > much follows the BDI_CAP_ selectors.
>
> Or BDI_CAP_UNRECLAIMABLE....
Yeah, that's nice and direct.
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next prev parent reply other threads:[~2007-07-31 4:47 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-27 23:27 Ravikiran G Thirumalai
2007-07-30 18:12 ` Christoph Lameter
2007-07-30 20:23 ` Andrew Morton
2007-07-30 20:31 ` Christoph Lameter
2007-07-30 21:12 ` Lee Schermerhorn
2007-07-31 0:01 ` Ravikiran G Thirumalai
2007-07-31 0:20 ` Andrew Morton
2007-07-31 0:27 ` Christoph Lameter
2007-07-31 1:06 ` Andrew Morton
2007-07-31 1:52 ` Christoph Lameter
2007-07-31 1:56 ` Ravikiran G Thirumalai
2007-07-31 2:01 ` Christoph Lameter
2007-07-31 2:27 ` Andrew Morton
2007-07-31 2:36 ` Christoph Lameter
2007-07-31 4:47 ` Andrew Morton [this message]
2007-07-31 5:00 ` Christoph Lameter
2007-07-31 5:17 ` Andrew Morton
2007-07-31 5:33 ` Christoph Lameter
2007-07-31 5:58 ` Andrew Morton
2007-07-31 6:09 ` Christoph Lameter
2007-07-31 6:18 ` Andrew Morton
2007-07-31 19:35 ` Christoph Lameter
2007-07-31 19:46 ` Andrew Morton
2007-07-31 19:50 ` Christoph Lameter
2007-07-31 8:27 ` Ravikiran G Thirumalai
2007-07-31 8:35 ` Andrew Morton
2007-07-31 19:30 ` Christoph Lameter
2007-07-31 19:20 ` Christoph Lameter
2007-07-31 7:15 ` Ravikiran G Thirumalai
2007-07-31 19:18 ` Christoph Lameter
2007-07-31 1:36 ` Ravikiran G Thirumalai
2007-07-31 1:53 ` Andrew Morton
2007-07-31 1:56 ` Christoph Lameter
2007-07-31 2:19 ` Christoph Lameter
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