From: Steven Whitehouse <swhiteho@redhat.com>
Date: Fri, 4 Oct 2013 11:29:34 +0000 (+0100)
Subject: GFS2: Protect quota sync generation
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~55^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e46c772dbafc2059b0c7ee87c6a7232baadaf6c7;p=pandora-kernel.git

GFS2: Protect quota sync generation

Now that gfs2_quota_sync can be potentially called from multiple
threads, we should protect this bit of code, and the sync generation
number in particular in order to ensure that there are no races
when syncing quotas.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: Abhijith Das <adas@redhat.com>
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