Commit 3a017509 authored Feb 28, 2014 by Hannes Reinecke Committed by Mike Snitzer Mar 27, 2014

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>

parent 9bf59a61

drivers/md/dm-mpath.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -1195,8 +1195,11 @@ static void activate_path(struct work_struct *work)
		struct pgpath *pgpath =
		container_of(work, struct pgpath, activate_path.work);

		if (pgpath->is_active)
		scsi_dh_activate(bdev_get_queue(pgpath->path.dev->bdev),
		pg_init_done, pgpath);
		else
		pg_init_done(pgpath, SCSI_DH_DEV_OFFLINED);
		}

		static int noretry_error(int error)