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Re: [xfs-masters] xfs deadlock in stable kernel 3.0.4

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: [xfs-masters] xfs deadlock in stable kernel 3.0.4
From: Stefan Priebe - Profihost AG <s.priebe@xxxxxxxxxxxx>
Date: Wed, 21 Sep 2011 21:01:12 +0200
Cc: Dave Chinner <david@xxxxxxxxxxxxx>, "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
In-reply-to: <20110921122649.GA16602@xxxxxxxxxxxxx>
References: <20110918230245.GF15688@dastard> <4E78665E.8030409@xxxxxxxxxxxx> <20110920160226.GA25542@xxxxxxxxxxxxx> <4E78CBF4.1030505@xxxxxxxxxxxx> <20110920172455.GA30757@xxxxxxxxxxxxx> <4E78CEFD.9030603@xxxxxxxxxxxx> <20110920223047.GA13758@xxxxxxxxxxxxx> <20110921021133.GM15688@dastard> <4E7994D3.5020103@xxxxxxxxxxxx> <20110921114237.GP15688@dastard> <20110921122649.GA16602@xxxxxxxxxxxxx>
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:6.0.2) Gecko/20110902 Thunderbird/6.0.2
Am 21.09.2011 14:26, schrieb Christoph Hellwig:
What is also strange is that we allocate a xfs_ail_wq, but don't
actually use it, although it would have the same idea.  Stefan,
can you try the following patch?  This moves the ail work to it's
explicit queue, and makes sure we never have the same work item
(= same fs to be pushed) concurrently.

no luck - problem still occurs ;-(


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