From: Rik van Riel <riel@redhat.com>
To: Mel Gorman <mel@csn.ul.ie>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, bugzilla-daemon@bugzilla.kernel.org,
Stuart Foster <smf.linux@ntlworld.com>,
Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [Bug 42578] Kernel crash "Out of memory error by X" when using NTFS file system on external USB Hard drive
Date: Fri, 10 Feb 2012 12:01:05 -0500 [thread overview]
Message-ID: <4F354D51.7020408@redhat.com> (raw)
In-Reply-To: <20120210163748.GR5796@csn.ul.ie>
On 02/10/2012 11:37 AM, Mel Gorman wrote:
> On Thu, Jan 19, 2012 at 12:24:48PM -0800, Andrew Morton wrote:
>> I think it is was always wrong that we only strip buffer_heads when
>> moving pages to the inactive list. What happens if those 600MB of
>> buffer_heads are all attached to inactive pages?
>>
>
> I wondered the same thing myself. With some use-once logic, there is
> no guarantee that they even get promoted to the active list in the
> first place. It's "always" been like this but we've changed how pages gets
> promoted quite a bit and this use case could have been easily missed.
It may be possible to also strip the buffer heads from
pages when they are moved to the active list, in
activate_page().
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next prev parent reply other threads:[~2012-02-10 17:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-42578-27@https.bugzilla.kernel.org/>
[not found] ` <201201180922.q0I9MCYl032623@bugzilla.kernel.org>
2012-01-19 20:24 ` [Bug 42578] Kernel crash "Out of memory error by X" when using NTFS file system on external USB Hard drive Andrew Morton
2012-02-10 16:37 ` Mel Gorman
2012-02-10 17:01 ` Rik van Riel [this message]
2012-02-14 12:17 ` Mel Gorman
2012-02-11 21:28 ` Stuart Foster
2012-02-14 13:09 ` Mel Gorman
2012-02-14 20:00 ` Christoph Lameter
2012-02-14 20:34 ` Andrew Morton
2012-02-14 20:42 ` Christoph Lameter
2012-02-14 20:37 ` Andrew Morton
2012-02-15 13:57 ` Mel Gorman
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