[PATCH 06/30] pf: use blk_mq_alloc_disk
From: Christoph Hellwig <hch@lst.de>
Date: 2021-06-02 06:54:41
Also in:
ceph-devel, dm-devel, linux-block, linux-mmc, linuxppc-dev, virtualization, xen-devel
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue allocation. Signed-off-by: Christoph Hellwig <hch@lst.de> --- drivers/block/paride/pf.c | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-)
diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c
index bb09f21ce21a..d5b9c88ba76f 100644
--- a/drivers/block/paride/pf.c
+++ b/drivers/block/paride/pf.c@@ -294,20 +294,17 @@ static void __init pf_init_units(void) for (unit = 0, pf = units; unit < PF_UNITS; unit++, pf++) { struct gendisk *disk; - disk = alloc_disk(1); - if (!disk) + if (blk_mq_alloc_sq_tag_set(&pf->tag_set, &pf_mq_ops, 1, + BLK_MQ_F_SHOULD_MERGE)) continue; - disk->queue = blk_mq_init_sq_queue(&pf->tag_set, &pf_mq_ops, - 1, BLK_MQ_F_SHOULD_MERGE); - if (IS_ERR(disk->queue)) { - disk->queue = NULL; - put_disk(disk); + disk = blk_mq_alloc_disk(&pf->tag_set, pf); + if (IS_ERR(disk)) { + blk_mq_free_tag_set(&pf->tag_set); continue; } INIT_LIST_HEAD(&pf->rq_list); - disk->queue->queuedata = pf; blk_queue_max_segments(disk->queue, cluster); blk_queue_bounce_limit(disk->queue, BLK_BOUNCE_HIGH); pf->disk = disk;
@@ -318,6 +315,7 @@ static void __init pf_init_units(void) snprintf(pf->name, PF_NAMELEN, "%s%d", name, unit); disk->major = major; disk->first_minor = unit; + disk->minors = 1; strcpy(disk->disk_name, pf->name); disk->fops = &pf_fops; disk->events = DISK_EVENT_MEDIA_CHANGE;
@@ -766,10 +764,8 @@ static int pf_detect(void) for (pf = units, unit = 0; unit < PF_UNITS; pf++, unit++) { if (!pf->disk) continue; - blk_cleanup_queue(pf->disk->queue); - pf->disk->queue = NULL; + blk_cleanup_disk(pf->disk); blk_mq_free_tag_set(&pf->tag_set); - put_disk(pf->disk); } pi_unregister_driver(par_drv); return -1;
--
2.30.2