dm mirror: add DMERR message if alloc_workqueue fails

Signed-off-by: Yangtao Li <frank.li@vivo.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>

diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 3e94765..4b2b40f 100644 (file)
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -1501,8 +1501,10 @@ static int __init dm_mirror_init(void)
        int r;
 
        dm_raid1_wq = alloc_workqueue("dm_raid1_wq", 0, 0);
-       if (!dm_raid1_wq)
+       if (!dm_raid1_wq) {
+               DMERR("Failed to alloc workqueue");
                return -ENOMEM;
+       }
 
        r = dm_register_target(&mirror_target);
        if (r < 0) {