From: Trond Myklebust <trond.myklebust@fys.uio.no>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Sage Weil <sage@newdream.net>,
npiggin@suse.de, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [patch] mm: close page_mkwrite races
Date: Wed, 01 Apr 2009 19:33:31 -0400 [thread overview]
Message-ID: <1238628811.18376.4.camel@heimdal.trondhjem.org> (raw)
In-Reply-To: <20090401160241.ec2f4573.akpm@linux-foundation.org>
On Wed, 2009-04-01 at 16:02 -0700, Andrew Morton wrote:
> What is "the problem"? Can we get "the problem"'s description included
> in the changelog?
>
> The patch is fairly ugly, somewhat costly and makes things (even) more
> complex. Sigh.
The problem is that currently, pages can be marked as dirty after they
have been written out, or even during writeout.
IOW: the filesystem and the mm no longer agree on the state of the page,
which again triggers issues such as
http://bugzilla.kernel.org/show_bug.cgi?id=12913
Trond
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next prev parent reply other threads:[~2009-04-01 23:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20090330135307.GP31000@wotan.suse.de>
2009-03-30 13:56 ` Nick Piggin
2009-03-31 19:55 ` Sage Weil
2009-04-01 23:02 ` Andrew Morton
2009-04-01 23:33 ` Trond Myklebust [this message]
2009-04-02 9:00 ` Nick Piggin
2009-04-02 9:04 ` Nick Piggin
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