linux-ext4 - [Bug 14620] WARNING: at mm/page_alloc.c:1805 __alloc_pages

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Message-Id: <200911172251.nAHMpsae011703@demeter.kernel.org>
Date:	Tue, 17 Nov 2009 22:51:54 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 14620] WARNING: at mm/page_alloc.c:1805 __alloc_pages_nodemask

http://bugzilla.kernel.org/show_bug.cgi?id=14620





--- Comment #1 from Rafael J. Wysocki <rjw@...k.pl>  2009-11-17 22:51:54 ---
On Tuesday 17 November 2009, Theodore Tso wrote:
> On Mon, Nov 16, 2009 at 11:37:47PM +0100, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.31.  Please verify if it still should be listed and let me know
> > (either way).
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14620
> > Subject		: WARNING: at mm/page_alloc.c:1805 __alloc_pages_nodemask
> > Submitter	: Rogério Brito <rbrito@....usp.br>
> > Date		: 2009-11-06 23:10 (11 days old)
> > References	: http://marc.info/?l=linux-kernel&m=125754907413892&w=4
> 
> This isn't technically a regression, since the warning is simply
> complaining about something that apparently ext4 has been doing for a
> long time, which is that it allocates some very large order data
> buffers.  So the change referenced simply printed a warning message
> that complained about the fact.
> 
> The actual problem will be fixed in 2.6.32, as we no longer allocate
> the big data buffers at mount time.

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