From: Yan, Zheng <zheng.z.yan@intel.com>
Date: Fri, 1 Mar 2013 02:57:54 +0000 (+0800)
Subject: ceph: acquire i_mutex in __ceph_do_pending_vmtruncate
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~26^2~240
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3f99969f42300e52779ae0656678c2534097f2ea;p=pandora-kernel.git

ceph: acquire i_mutex in __ceph_do_pending_vmtruncate

make __ceph_do_pending_vmtruncate() acquire the i_mutex if the caller
does not hold the i_mutex, so ceph_aio_read() can call safely.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Greg Farnum <greg@inktank.com>
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