[PATCH 20/30] nullb: use blk_mq_alloc_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 20/30] nullb: use blk_mq_alloc_disk
- From: Christoph Hellwig <hch@lst.de>
- Date: Wed, 2 Jun 2021 09:53:35 +0300
- Message-id: <[🔎] 20210602065345.355274-21-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/null_blk/main.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c
index d8e098f1e5b5..74fb2ec63219 100644
--- a/drivers/block/null_blk/main.c
+++ b/drivers/block/null_blk/main.c
@@ -1851,13 +1851,12 @@ static int null_add_dev(struct nullb_device *dev)
rv = -ENOMEM;
nullb->tag_set->timeout = 5 * HZ;
- nullb->q = blk_mq_init_queue_data(nullb->tag_set, nullb);
- if (IS_ERR(nullb->q))
- goto out_cleanup_tags;
- nullb->disk = alloc_disk_node(1, nullb->dev->home_node);
- if (!nullb->disk)
+ nullb->disk = blk_mq_alloc_disk(nullb->tag_set, nullb);
+ if (IS_ERR(nullb->disk)) {
+ rv = PTR_ERR(nullb->disk);
goto out_cleanup_disk;
- nullb->disk->queue = nullb->q;
+ }
+ nullb->q = nullb->disk->queue;
} else if (dev->queue_mode == NULL_Q_BIO) {
rv = -ENOMEM;
nullb->disk = blk_alloc_disk(nullb->dev->home_node);
--
2.30.2
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