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RE: XFS memory allocation deadlock in 2.6.38

To: "'Dave Chinner'" <david@xxxxxxxxxxxxx>, "'Christoph Hellwig'" <hch@xxxxxxxxxxxxx>
Subject: RE: XFS memory allocation deadlock in 2.6.38
From: Sean Noonan <Sean.Noonan@xxxxxxxxxxxx>
Date: Tue, 29 Mar 2011 18:45:15 -0400
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Cc: Trammell Hudson <Trammell.Hudson@xxxxxxxxxxxx>, Christos Zoulas <Christos.Zoulas@xxxxxxxxxxxx>, Martin Bligh <Martin.Bligh@xxxxxxxxxxxx>, "'linux-kernel@xxxxxxxxxxxxxxx'" <linux-kernel@xxxxxxxxxxxxxxx>, Stephen Degler <Stephen.Degler@xxxxxxxxxxxx>, "'linux-mm@xxxxxxxxx'" <linux-mm@xxxxxxxxx>, "'linux-xfs@xxxxxxxxxxx'" <linux-xfs@xxxxxxxxxxx>, "'Michel Lespinasse'" <walken@xxxxxxxxxx>
In-reply-to: <20110329224230.GH3008@dastard>
References: <081DDE43F61F3D43929A181B477DCA95639B5327@xxxxxxxxxxxxxxxxxxxx> <20110324174311.GA31576@xxxxxxxxxxxxx> <AANLkTikwwRm6FHFtEdUg54NvmKdswQw-NPH5dtq1mXBK@xxxxxxxxxxxxxx> <081DDE43F61F3D43929A181B477DCA95639B5349@xxxxxxxxxxxxxxxxxxxx> <BANLkTin0jJevStg5P2hqsLbqMzo3o30sYg@xxxxxxxxxxxxxx> <081DDE43F61F3D43929A181B477DCA95639B534E@xxxxxxxxxxxxxxxxxxxx> <081DDE43F61F3D43929A181B477DCA95639B5359@xxxxxxxxxxxxxxxxxxxx> <20110329192434.GA10536@xxxxxxxxxxxxx> <081DDE43F61F3D43929A181B477DCA95639B535C@xxxxxxxxxxxxxxxxxxxx> <20110329200256.GA6019@xxxxxxxxxxxxx> <20110329224230.GH3008@dastard>
Thread-index: AcvuYpz7hovhsA6oREKqH6av+QvnaAAADQxQ
Thread-topic: XFS memory allocation deadlock in 2.6.38
> Need to keep the if (!irbuf) check as KM_MAYFAIL is passed.

It wasn't in before the bug presented, so leaving it in wouldn't be a true test 
as to whether the bug has been tracked to the correct place.  I'll test again 
with the if (!irbuf).

Sean

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