From: Scott Mayhew <smayhew@redhat.com>
Date: Fri, 5 Jul 2013 21:33:19 +0000 (-0400)
Subject: NFS: Allow nfs_updatepage to extend a write under additional circumstances
X-Git-Tag: v3.11-rc1~28^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c7559663e42f4294ffe31fe159da6b6a66b35d61;p=pandora-kernel.git

NFS: Allow nfs_updatepage to extend a write under additional circumstances

Currently nfs_updatepage allows a write to be extended to cover a full
page only if we don't have a byte range lock lock on the file... but if
we have a write delegation on the file or if we have the whole file
locked for writing then we should be allowed to extend the write as
well.

Signed-off-by: Scott Mayhew <smayhew@redhat.com>
[Trond: fix up call to nfs_have_delegation()]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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