Merge branch 'linus' into x86/urgent, to refresh the tree

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 6 insertions, 20 deletions

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 419362c2d8ac..d6a66921daf4 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -203,14 +203,7 @@ static struct multipath *alloc_multipath(struct dm_target *ti)
 static int alloc_multipath_stage2(struct dm_target *ti, struct multipath *m)
 {
 	if (m->queue_mode == DM_TYPE_NONE) {
-		/*
-		 * Default to request-based.
-		 */
-		if (dm_use_blk_mq(dm_table_get_md(ti->table)))
-			m->queue_mode = DM_TYPE_MQ_REQUEST_BASED;
-		else
-			m->queue_mode = DM_TYPE_REQUEST_BASED;
-
+		m->queue_mode = DM_TYPE_REQUEST_BASED;
 	} else if (m->queue_mode == DM_TYPE_BIO_BASED) {
 		INIT_WORK(&m->process_queued_bios, process_queued_bios);
 		/*
@@ -537,10 +530,7 @@ static int multipath_clone_and_map(struct dm_target *ti, struct request *rq,
 		 * get the queue busy feedback (via BLK_STS_RESOURCE),
 		 * otherwise I/O merging can suffer.
 		 */
-		if (q->mq_ops)
-			return DM_MAPIO_REQUEUE;
-		else
-			return DM_MAPIO_DELAY_REQUEUE;
+		return DM_MAPIO_REQUEUE;
 	}
 	clone->bio = clone->biotail = NULL;
 	clone->rq_disk = bdev->bd_disk;
@@ -668,7 +658,7 @@ static int multipath_map_bio(struct dm_target *ti, struct bio *bio)
 
 static void process_queued_io_list(struct multipath *m)
 {
-	if (m->queue_mode == DM_TYPE_MQ_REQUEST_BASED)
+	if (m->queue_mode == DM_TYPE_REQUEST_BASED)
 		dm_mq_kick_requeue_list(dm_table_get_md(m->ti->table));
 	else if (m->queue_mode == DM_TYPE_BIO_BASED)
 		queue_work(kmultipathd, &m->process_queued_bios);
@@ -1089,10 +1079,9 @@ static int parse_features(struct dm_arg_set *as, struct multipath *m)
 
 			if (!strcasecmp(queue_mode_name, "bio"))
 				m->queue_mode = DM_TYPE_BIO_BASED;
-			else if (!strcasecmp(queue_mode_name, "rq"))
+			else if (!strcasecmp(queue_mode_name, "rq") ||
+				 !strcasecmp(queue_mode_name, "mq"))
 				m->queue_mode = DM_TYPE_REQUEST_BASED;
-			else if (!strcasecmp(queue_mode_name, "mq"))
-				m->queue_mode = DM_TYPE_MQ_REQUEST_BASED;
 			else {
 				ti->error = "Unknown 'queue_mode' requested";
 				r = -EINVAL;
@@ -1726,9 +1715,6 @@ static void multipath_status(struct dm_target *ti, status_type_t type,
 			case DM_TYPE_BIO_BASED:
 				DMEMIT("queue_mode bio ");
 				break;
-			case DM_TYPE_MQ_REQUEST_BASED:
-				DMEMIT("queue_mode mq ");
-				break;
 			default:
 				WARN_ON_ONCE(true);
 				break;
@@ -1972,7 +1958,7 @@ static int multipath_busy(struct dm_target *ti)
 
 	/* no paths available, for blk-mq: rely on IO mapping to delay requeue */
 	if (!atomic_read(&m->nr_valid_paths) && test_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags))
-		return (m->queue_mode != DM_TYPE_MQ_REQUEST_BASED);
+		return (m->queue_mode != DM_TYPE_REQUEST_BASED);
 
 	/* Guess which priority_group will be used at next mapping time */
 	pg = READ_ONCE(m->current_pg);