diff --git a/drivers/md/dm.c b/drivers/md/dm.c index c752c55f0bb2..c4d4cd38a58f 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2293,7 +2293,6 @@ static void dm_init_md_queue(struct mapped_device *md) * - must do so here (in alloc_dev callchain) before queue is used */ md->queue->queuedata = md; - md->queue->backing_dev_info.congested_data = md; } static void dm_init_old_md_queue(struct mapped_device *md) @@ -2304,6 +2303,7 @@ static void dm_init_old_md_queue(struct mapped_device *md) /* * Initialize aspects of queue that aren't relevant for blk-mq */ + md->queue->backing_dev_info.congested_data = md; md->queue->backing_dev_info.congested_fn = dm_any_congested; blk_queue_bounce_limit(md->queue, BLK_BOUNCE_ANY); } @@ -2386,6 +2386,12 @@ static struct mapped_device *alloc_dev(int minor) goto bad; dm_init_md_queue(md); + /* + * default to bio-based required ->make_request_fn until DM + * table is loaded and md->type established. If request-based + * table is loaded: blk-mq will override accordingly. + */ + blk_queue_make_request(md->queue, dm_make_request); md->disk = alloc_disk(1); if (!md->disk) @@ -2849,7 +2855,6 @@ int dm_setup_md_queue(struct mapped_device *md) break; case DM_TYPE_BIO_BASED: dm_init_old_md_queue(md); - blk_queue_make_request(md->queue, dm_make_request); /* * DM handles splitting bios as needed. Free the bio_split bioset * since it won't be used (saves 1 process per bio-based DM device).