The only behavior change introduced by this patch is that WARN_ON_ONCE()
is called if __multipath_map_bio() would return an unsupported return
value.
Signed-off-by: Bart Van Assche <bart.vanass...@wdc.com>
Cc: Christoph Hellwig <h...@lst.de>
Cc: Laurence Oberman <lober...@redhat.com>
---
drivers/md/dm-mpath.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 6e20deac4add..f2ffa20c69b9 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -632,6 +632,11 @@ static void process_queued_bios(struct work_struct *work)
case DM_MAPIO_REMAPPED:
generic_make_request(bio);
break;
+ case 0:
+ break;
+ default:
+ WARN_ONCE(true, "__multipath_map_bio() returned %d\n",
+ r);
}
}
blk_finish_plug(&plug);
--
2.13.3
--
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