From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 21 Mar 2014 14:14:08 +0000 (-0400)
Subject: don't bother with propagate_mnt() unless the target is shared
X-Git-Tag: v3.14~1^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0b1b901b5a98bb36943d10820efc796f7cd45ff3;p=pandora-kernel.git

don't bother with propagate_mnt() unless the target is shared

If the dest_mnt is not shared, propagate_mnt() does nothing -
there's no mounts to propagate to and thus no copies to create.
Might as well don't bother calling it in that case.

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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