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authorBart Van Assche <bart.vanassche@wdc.com>2017-08-09 11:32:14 -0700
committerMike Snitzer <snitzer@redhat.com>2017-08-28 09:58:29 -0400
commit9157c8d3e2d318581ecc8bdf34367d57f19c5380 (patch)
tree87916dae804ca624da83edb44e7352d391487d7c /drivers/md/dm-mpath.c
parent7b06e09a6d81868309f68069a6dca7ff62d47beb (diff)
dm mpath: complain about unsupported __multipath_map_bio() return values
WARN_ONCE() if __multipath_map_bio() returns an unsupported return value. Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-mpath.c')
-rw-r--r--drivers/md/dm-mpath.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 97bca9464395..7406ededf875 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -632,6 +632,10 @@ 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);