From: Fred Isaman <iisaman@citi.umich.edu>
Date: Thu, 1 May 2008 17:03:22 +0000 (+0300)
Subject: nfs: fix race in nfs_dirty_request
X-Git-Tag: v2.6.26-rc4~126^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=38def50fabc479dc96ea6bd2cb2526e0dfc36fa4;p=pandora-kernel.git

nfs: fix race in nfs_dirty_request

When called from nfs_flush_incompatible, the req is not locked, so
req->wb_page might be set to NULL before it is used by PageWriteback.

Signed-off-by: Fred Isaman <iisaman@citi.umich.edu>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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