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Wed, 09 Aug 2017 18:51:01 +0000 (UTC) X-Virus-Scanned: ClamAV using ClamSMTP 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 Cc: Christoph Hellwig Cc: Laurence Oberman Reviewed-by: Christoph Hellwig --- 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);