[PATCH 5/5] dm: remove dm_dispatch_clone_request
From: Christoph Hellwig <hch@lst.de>
Date: 2022-02-15 10:06:05
Also in:
dm-devel
Subsystem:
device-mapper (lvm), the rest · Maintainers:
Alasdair Kergon, Mike Snitzer, Mikulas Patocka, Benjamin Marzinski, Linus Torvalds
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 <hch@lst.de> --- 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 8f6117342d322..6948d5db90925 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:
--
2.30.2