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RE: XFS memory allocation deadlock in 2.6.38

To: "'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 16:23:03 -0400
Accept-language: en-US
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Cc: "'Michel Lespinasse'" <walken@xxxxxxxxxx>, "'linux-kernel@xxxxxxxxxxxxxxx'" <linux-kernel@xxxxxxxxxxxxxxx>, Martin Bligh <Martin.Bligh@xxxxxxxxxxxx>, Trammell Hudson <Trammell.Hudson@xxxxxxxxxxxx>, Christos Zoulas <Christos.Zoulas@xxxxxxxxxxxx>, "'linux-xfs@xxxxxxxxxxx'" <linux-xfs@xxxxxxxxxxx>, Stephen Degler <Stephen.Degler@xxxxxxxxxxxx>, "'linux-mm@xxxxxxxxx'" <linux-mm@xxxxxxxxx>
In-reply-to: <20110329200256.GA6019@xxxxxxxxxxxxx>
References: <081DDE43F61F3D43929A181B477DCA95639B52FD@xxxxxxxxxxxxxxxxxxxx> <081DDE43F61F3D43929A181B477DCA95639B5327@xxxxxxxxxxxxxxxxxxxx> <20110324174311.GA31576@xxxxxxxxxxxxx> <AANLkTikwwRm6FHFtEdUg54NvmKdswQw-NPH5dtq1mXBK@xxxxxxxxxxxxxx> <081DDE43F61F3D43929A181B477DCA95639B5349@xxxxxxxxxxxxxxxxxxxx> <BANLkTin0jJevStg5P2hqsLbqMzo3o30sYg@xxxxxxxxxxxxxx> <081DDE43F61F3D43929A181B477DCA95639B534E@xxxxxxxxxxxxxxxxxxxx> <081DDE43F61F3D43929A181B477DCA95639B5359@xxxxxxxxxxxxxxxxxxxx> <20110329192434.GA10536@xxxxxxxxxxxxx> <081DDE43F61F3D43929A181B477DCA95639B535C@xxxxxxxxxxxxxxxxxxxx> <20110329200256.GA6019@xxxxxxxxxxxxx>
Thread-index: AcvuTFfY9wPeIe+4SRyshHnJafIpsQAAqwdg
Thread-topic: XFS memory allocation deadlock in 2.6.38
> mind either, so to narrow this down does reverting the patch on
> 2.6.38 also fix it?  The revert isn't quite trivial due to changes
> since then, so here's the patch I came up with:

This patch does fix the problem.

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