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: v2.6.28-rc5~17^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b81aa1c79201cb424114fd198607951900babe18;p=pandora-kernel.git

dm mpath: avoid attempting to activate null path

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>
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