From: Chandra Seetharaman <sekharan@us.ibm.com>
Date: Thu, 13 Nov 2008 23:39:00 +0000 (+0000)
Subject: dm mpath: avoid attempting to activate null path
X-Git-Tag: v2.6.27.16~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ea291b00259ee488a6056d1f9ae1dcdd73d634fb;p=pandora-kernel.git

dm mpath: avoid attempting to activate null path

commit b81aa1c79201cb424114fd198607951900babe18 upstream.

Path activation code is called even when the pgpath is NULL. This could
lead to a panic in activate_path(). Such a panic is seen in -rt kernel.

This problem has been there before the pg_init() was moved to a
workqueue.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

Reading git-diff-tree failed