dm-mpath: do not activate failed paths
authorHannes Reinecke <hare@suse.de>
Fri, 28 Feb 2014 14:33:49 +0000 (15:33 +0100)
committerMike Snitzer <snitzer@redhat.com>
Thu, 27 Mar 2014 20:56:25 +0000 (16:56 -0400)
commit3a0175096423856d145e210527271c9eec188a5f
tree01ef8a823a28a27f9c82e3b167e2963097fc47d6
parent9bf59a611a5eb479f321fae34adc9f948de0a42f
dm-mpath: do not activate failed paths

activate_path() is run without a lock, so the path might be
set to failed before activate_path() had a chance to run.
This patch add a check for ->active in activate_path() to
avoid unnecessary overhead by calling functions which are known
to be failing.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
drivers/md/dm-mpath.c