From 9f9adea7187ec1978bd3863f59b7fe27ccf33519 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 15 Feb 2022 11:05:40 +0100 Subject: [PATCH] dm: remove dm_dispatch_clone_request Fold dm_dispatch_clone_request into it's only caller, and use a switch statement to single dispatch for the handling of the different return values from blk_insert_cloned_request. Signed-off-by: Christoph Hellwig Reviewed-by: Mike Snitzer Link: https://lore.kernel.org/r/20220215100540.3892965-6-hch@lst.de Signed-off-by: Jens Axboe --- drivers/md/dm-rq.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c index 8f6117342d32..6948d5db9092 100644 --- a/drivers/md/dm-rq.c +++ b/drivers/md/dm-rq.c @@ -303,17 +303,6 @@ static void end_clone_request(struct request *clone, blk_status_t error) dm_complete_request(tio->orig, error); } -static blk_status_t dm_dispatch_clone_request(struct request *clone, struct request *rq) -{ - blk_status_t r; - - r = blk_insert_cloned_request(clone); - if (r != BLK_STS_OK && r != BLK_STS_RESOURCE && r != BLK_STS_DEV_RESOURCE) - /* must complete clone in terms of original request */ - dm_complete_request(rq, r); - return r; -} - static int dm_rq_bio_constructor(struct bio *bio, struct bio *bio_orig, void *data) { @@ -394,13 +383,20 @@ static int map_request(struct dm_rq_target_io *tio) /* The target has remapped the I/O so dispatch it */ trace_block_rq_remap(clone, disk_devt(dm_disk(md)), blk_rq_pos(rq)); - ret = dm_dispatch_clone_request(clone, rq); - if (ret == BLK_STS_RESOURCE || ret == BLK_STS_DEV_RESOURCE) { + ret = blk_insert_cloned_request(clone); + switch (ret) { + case BLK_STS_OK: + break; + case BLK_STS_RESOURCE: + case BLK_STS_DEV_RESOURCE: blk_rq_unprep_clone(clone); blk_mq_cleanup_rq(clone); tio->ti->type->release_clone_rq(clone, &tio->info); tio->clone = NULL; return DM_MAPIO_REQUEUE; + default: + /* must complete clone in terms of original request */ + dm_complete_request(rq, ret); } break; case DM_MAPIO_REQUEUE: