[PATCH 30/30] z2ram: use blk_mq_alloc_disk and blk_cleanup_disk
- To: Jens Axboe <axboe@kernel.dk>
- Cc: Justin Sanders <justin@coraid.com>, Denis Efremov <efremov@linux.com>, Josef Bacik <josef@toxicpanda.com>, Tim Waugh <tim@cyberelk.net>, Geoff Levand <geoff@infradead.org>, Ilya Dryomov <idryomov@gmail.com>, "Md. Haris Iqbal" <haris.iqbal@ionos.com>, Jack Wang <jinpu.wang@ionos.com>, "Michael S. Tsirkin" <mst@redhat.com>, Jason Wang <jasowang@redhat.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, Roger Pau Monné <roger.pau@citrix.com>, Mike Snitzer <snitzer@redhat.com>, Maxim Levitsky <maximlevitsky@gmail.com>, Alex Dubov <oakad@yahoo.com>, Miquel Raynal <miquel.raynal@bootlin.com>, Richard Weinberger <richard@nod.at>, Vignesh Raghavendra <vigneshr@ti.com>, Heiko Carstens <hca@linux.ibm.com>, Vasily Gorbik <gor@linux.ibm.com>, Christian Borntraeger <borntraeger@de.ibm.com>, dm-devel@redhat.com, linux-block@vger.kernel.org, nbd@other.debian.org, linuxppc-dev@lists.ozlabs.org, ceph-devel@vger.kernel.org, virtualization@lists.linux-foundation.org, xen-devel@lists.xenproject.org, linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org, linux-s390@vger.kernel.org
- Subject: [PATCH 30/30] z2ram: use blk_mq_alloc_disk and blk_cleanup_disk
- From: Christoph Hellwig <hch@lst.de>
- Date: Wed, 2 Jun 2021 09:53:45 +0300
- Message-id: <[🔎] 20210602065345.355274-31-hch@lst.de>
- In-reply-to: <[🔎] 20210602065345.355274-1-hch@lst.de>
- References: <[🔎] 20210602065345.355274-1-hch@lst.de>
Use blk_mq_alloc_disk and blk_cleanup_disk to simplify the gendisk and
request_queue allocation.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/block/z2ram.c | 15 ++++-----------
1 file changed, 4 insertions(+), 11 deletions(-)
diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c
index c1d20818e649..a8968d9e759b 100644
--- a/drivers/block/z2ram.c
+++ b/drivers/block/z2ram.c
@@ -323,27 +323,20 @@ static const struct blk_mq_ops z2_mq_ops = {
static int z2ram_register_disk(int minor)
{
- struct request_queue *q;
struct gendisk *disk;
- disk = alloc_disk(1);
- if (!disk)
- return -ENOMEM;
-
- q = blk_mq_init_queue(&tag_set);
- if (IS_ERR(q)) {
- put_disk(disk);
- return PTR_ERR(q);
- }
+ disk = blk_mq_alloc_disk(&tag_set, NULL);
+ if (IS_ERR(disk))
+ return PTR_ERR(disk);
disk->major = Z2RAM_MAJOR;
disk->first_minor = minor;
+ disk->minors = 1;
disk->fops = &z2_fops;
if (minor)
sprintf(disk->disk_name, "z2ram%d", minor);
else
sprintf(disk->disk_name, "z2ram");
- disk->queue = q;
z2ram_gendisk[minor] = disk;
add_disk(disk);
--
2.30.2
Reply to: