From: Dave Chinner <dchinner@redhat.com>
Date: Tue, 20 Jul 2010 07:53:59 +0000 (+1000)
Subject: xfs: fix memory reclaim recursion deadlock on locked inode buffer
X-Git-Tag: v2.6.36-rc1~589^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4a7edddcb5b14ddb5962e6906b6fd6b500d7a361;p=pandora-kernel.git

xfs: fix memory reclaim recursion deadlock on locked inode buffer

Calling into memory reclaim with a locked inode buffer can deadlock
if memory reclaim tries to lock the inode buffer during inode
teardown. Convert the relevant memory allocations to use KM_NOFS to
avoid this deadlock condition.

Reported-by: Peter Watkins <treestem@gmail.com>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
---

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