[dm-devel] [PATCH] dm mpath: Skip calling activate_path if the path is already failed

[Moger, Babu]

This patch adds a check to skip failed paths while calling activate_path. If the path is already failed then activate_path will fail for sure. We don't have to call in that case.    

Signed-off-by: Babu Moger <babu.moger at lsi.com>
---


--- linux-2.6.31-rc3/drivers/md/dm-mpath.c.orig	2009-07-27 10:30:39.000000000 -0500
+++ linux-2.6.31-rc3/drivers/md/dm-mpath.c	2009-07-27 10:35:50.000000000 -0500
@@ -454,6 +454,10 @@ static void process_queued_ios(struct wo
 		m->pg_init_count++;
 		m->pg_init_required = 0;
 		list_for_each_entry(tmp, &pgpath->pg->pgpaths, list) {
+			/* Skip failed paths */
+			if (!tmp->is_active)
+				continue;
+			
 			if (queue_work(kmpath_handlerd, &tmp->activate_path))
 				m->pg_init_in_progress++;
 		}