From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: "Justin Sanders" <justin@coraid.com>,
"Vignesh Raghavendra" <vigneshr@ti.com>,
"Mike Snitzer" <snitzer@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Jason Wang" <jasowang@redhat.com>,
virtualization@lists.linux-foundation.org, dm-devel@redhat.com,
"Md. Haris Iqbal" <haris.iqbal@ionos.com>,
"Miquel Raynal" <miquel.raynal@bootlin.com>,
"Jack Wang" <jinpu.wang@ionos.com>,
"Tim Waugh" <tim@cyberelk.net>,
linux-s390@vger.kernel.org, "Alex Dubov" <oakad@yahoo.com>,
"Richard Weinberger" <richard@nod.at>,
"Christian Borntraeger" <borntraeger@de.ibm.com>,
xen-devel@lists.xenproject.org,
"Ilya Dryomov" <idryomov@gmail.com>,
"Vasily Gorbik" <gor@linux.ibm.com>,
"Konrad Rzeszutek Wilk" <konrad.wilk@oracle.com>,
"Heiko Carstens" <hca@linux.ibm.com>,
"Josef Bacik" <josef@toxicpanda.com>,
"Denis Efremov" <efremov@linux.com>,
nbd@other.debian.org, linux-block@vger.kernel.org,
ceph-devel@vger.kernel.org,
"Maxim Levitsky" <maximlevitsky@gmail.com>,
"Geoff Levand" <geoff@infradead.org>,
linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org,
linuxppc-dev@lists.ozlabs.org,
"Roger Pau Monné" <roger.pau@citrix.com>
Subject: [PATCH 12/30] swim: use blk_mq_alloc_disk
Date: Wed, 2 Jun 2021 09:53:27 +0300 [thread overview]
Message-ID: <20210602065345.355274-13-hch@lst.de> (raw)
In-Reply-To: <20210602065345.355274-1-hch@lst.de>
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/swim.c | 34 ++++++++++++++--------------------
1 file changed, 14 insertions(+), 20 deletions(-)
diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index 2917b21f48ff..7ccc8d2a41bc 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -800,23 +800,20 @@ static int swim_floppy_init(struct swim_priv *swd)
spin_lock_init(&swd->lock);
for (drive = 0; drive < swd->floppy_count; drive++) {
- struct request_queue *q;
-
- swd->unit[drive].disk = alloc_disk(1);
- if (swd->unit[drive].disk == NULL) {
- err = -ENOMEM;
+ err = blk_mq_alloc_sq_tag_set(&swd->unit[drive].tag_set,
+ &swim_mq_ops, 2, BLK_MQ_F_SHOULD_MERGE);
+ if (err)
goto exit_put_disks;
- }
- q = blk_mq_init_sq_queue(&swd->unit[drive].tag_set, &swim_mq_ops,
- 2, BLK_MQ_F_SHOULD_MERGE);
- if (IS_ERR(q)) {
- err = PTR_ERR(q);
+ swd->unit[drive].disk =
+ blk_mq_alloc_disk(&swd->unit[drive].tag_set,
+ &swd->unit[drive]);
+ if (IS_ERR(swd->unit[drive].disk)) {
+ blk_mq_free_tag_set(&swd->unit[drive].tag_set);
+ err = PTR_ERR(swd->unit[drive].disk);
goto exit_put_disks;
}
- swd->unit[drive].disk->queue = q;
- swd->unit[drive].disk->queue->queuedata = &swd->unit[drive];
swd->unit[drive].swd = swd;
}
@@ -824,6 +821,7 @@ static int swim_floppy_init(struct swim_priv *swd)
swd->unit[drive].disk->flags = GENHD_FL_REMOVABLE;
swd->unit[drive].disk->major = FLOPPY_MAJOR;
swd->unit[drive].disk->first_minor = drive;
+ swd->unit[drive].disk->minors = 1;
sprintf(swd->unit[drive].disk->disk_name, "fd%d", drive);
swd->unit[drive].disk->fops = &floppy_fops;
swd->unit[drive].disk->events = DISK_EVENT_MEDIA_CHANGE;
@@ -839,14 +837,10 @@ static int swim_floppy_init(struct swim_priv *swd)
do {
struct gendisk *disk = swd->unit[drive].disk;
- if (disk) {
- if (disk->queue) {
- blk_cleanup_queue(disk->queue);
- disk->queue = NULL;
- }
- blk_mq_free_tag_set(&swd->unit[drive].tag_set);
- put_disk(disk);
- }
+ if (!disk)
+ continue;
+ blk_cleanup_disk(disk);
+ blk_mq_free_tag_set(&swd->unit[drive].tag_set);
} while (drive--);
return err;
}
--
2.30.2
next prev parent reply other threads:[~2021-06-02 7:00 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-02 6:53 simplify gendisk and request_queue allocation for blk-mq based drivers Christoph Hellwig
2021-06-02 6:53 ` [PATCH 01/30] blk-mq: factor out a blk_mq_alloc_sq_tag_set helper Christoph Hellwig
2021-06-02 6:53 ` [PATCH 02/30] blk-mq: improve the blk_mq_init_allocated_queue interface Christoph Hellwig
2021-06-02 6:53 ` [PATCH 03/30] blk-mq: add the blk_mq_alloc_disk APIs Christoph Hellwig
2021-06-03 0:03 ` Chaitanya Kulkarni
2021-06-02 6:53 ` [PATCH 04/30] virtio-blk: use blk_mq_alloc_disk Christoph Hellwig
2021-06-02 6:53 ` [PATCH 05/30] pcd: " Christoph Hellwig
2021-06-02 6:53 ` [PATCH 06/30] pf: " Christoph Hellwig
2021-06-02 6:53 ` [PATCH 07/30] ms_block: " Christoph Hellwig
2021-06-03 15:36 ` Ulf Hansson
2021-06-02 6:53 ` [PATCH 08/30] mspro: " Christoph Hellwig
2021-06-03 15:36 ` Ulf Hansson
2021-06-02 6:53 ` [PATCH 09/30] mtd_blkdevs: " Christoph Hellwig
[not found] ` <CGME20210615154746eucas1p1321b6f1cf38d21899632e132cf025e61@eucas1p1.samsung.com>
2021-06-15 15:47 ` Marek Szyprowski
2021-06-15 15:58 ` Christoph Hellwig
2021-06-15 16:28 ` Marek Szyprowski
2021-06-02 6:53 ` [PATCH 10/30] ps3disk: " Christoph Hellwig
2021-06-06 15:58 ` Geoff Levand
2021-06-02 6:53 ` [PATCH 11/30] swim3: " Christoph Hellwig
2021-06-02 6:53 ` Christoph Hellwig [this message]
2021-06-02 6:53 ` [PATCH 13/30] sunvdc: " Christoph Hellwig
2021-06-02 6:53 ` [PATCH 14/30] gdrom: " Christoph Hellwig
2021-06-02 6:53 ` [PATCH 15/30] blk-mq: remove blk_mq_init_sq_queue Christoph Hellwig
2021-06-03 0:04 ` Chaitanya Kulkarni
2021-06-02 6:53 ` [PATCH 16/30] aoe: use blk_mq_alloc_disk and blk_cleanup_disk Christoph Hellwig
2021-06-02 6:53 ` [PATCH 17/30] floppy: " Christoph Hellwig
2021-06-02 6:53 ` [PATCH 18/30] loop: " Christoph Hellwig
2021-06-03 0:05 ` Chaitanya Kulkarni
2021-06-02 6:53 ` [PATCH 19/30] nbd: " Christoph Hellwig
2021-06-02 6:53 ` [PATCH 20/30] nullb: use blk_mq_alloc_disk Christoph Hellwig
2021-06-03 0:10 ` Chaitanya Kulkarni
2021-06-08 5:39 ` Christoph Hellwig
2021-06-02 6:53 ` [PATCH 21/30] pd: use blk_mq_alloc_disk and blk_cleanup_disk Christoph Hellwig
2021-06-02 6:53 ` [PATCH 22/30] rbd: " Christoph Hellwig
2021-06-02 6:53 ` [PATCH 23/30] rnbd: " Christoph Hellwig
2021-06-02 7:49 ` Jinpu Wang
2021-06-02 6:53 ` [PATCH 24/30] sx8: " Christoph Hellwig
2021-06-02 6:53 ` [PATCH 25/30] xen-blkfront: " Christoph Hellwig
2021-06-02 6:53 ` [PATCH 26/30] ubi: " Christoph Hellwig
2021-06-02 6:53 ` [PATCH 27/30] scm_blk: " Christoph Hellwig
2021-06-02 12:02 ` Niklas Schnelle
2021-06-02 6:53 ` [PATCH 28/30] amiflop: " Christoph Hellwig
2021-06-02 6:53 ` [PATCH 29/30] ataflop: " Christoph Hellwig
2021-06-02 6:53 ` [PATCH 30/30] z2ram: " Christoph Hellwig
2021-06-04 15:58 ` simplify gendisk and request_queue allocation for blk-mq based drivers Konrad Rzeszutek Wilk
2021-06-05 14:02 ` Christoph Hellwig
2021-06-11 17:55 ` Jens Axboe
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