[PATCH 1/6] dm-multipath: Do not call pg_init twice

[Hannes Reinecke <hare@suse.de>]

When pg_init is running we shouldn't be calling the same
routine twice; we need to wait for the first pg_init to
complete.

Signed-off-by: Hannes Reinecke <hare@suse.de>
---
 drivers/md/dm-mpath.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 6eb9dc9..d45290a 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -261,6 +261,9 @@ static void __pg_init_all_paths(struct multipath *m)
 	struct pgpath *pgpath;
 	unsigned long pg_init_delay = 0;
 
+	if (m->pg_init_in_progress || m->pg_init_disabled)
+		return;
+
 	m->pg_init_count++;
 	m->pg_init_required = 0;
 	if (m->pg_init_delay_retry)
-- 
1.7.12.4