linux-kernel - [RFC PATCH 14/18] rnbd-clt: use init disk helper

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Message-ID: <20221005050027.39591-15-kch@nvidia.com>
Date:   Tue, 4 Oct 2022 22:00:23 -0700
From:   Chaitanya Kulkarni <kch@...dia.com>
To:     <ogeert@...ux-m68k.org>, <linux-block@...r.kernel.org>,
        <linux-m68k@...ts.linux-m68k.org>, <linux-kernel@...r.kernel.org>,
        <drbd-dev@...ts.linbit.com>, <nbd@...er.debian.org>,
        <linux-mtd@...ts.infradead.org>
CC:     <axboe@...nel.dk>, <philipp.reisner@...bit.com>,
        <lars.ellenberg@...bit.com>, <christoph.boehmwalder@...bit.com>,
        <efremov@...ux.com>, <josef@...icpanda.com>, <tim@...erelk.net>,
        <haris.iqbal@...os.com>, <jinpu.wang@...os.com>, <richard@....at>,
        <miquel.raynal@...tlin.com>, <vigneshr@...com>, <kch@...dia.com>,
        <mcgrof@...nel.org>, <hare@...e.de>,
        <damien.lemoal@...nsource.wdc.com>, <johannes.thumshirn@....com>,
        <bvanassche@....org>, <ming.lei@...hat.com>,
        <vincent.fu@...sung.com>, <shinichiro.kawasaki@....com>
Subject: [RFC PATCH 14/18] rnbd-clt: use init disk helper

Add and use the helper to initialize the common fields of struct gendisk
such as major, first_minor, minors, disk_name, private_data, and ops.
This initialization is spread all over the block drivers. This avoids
code repetation of inialization code of gendisk in current block drivers
and any future ones.

Signed-off-by: Chaitanya Kulkarni <kch@...dia.com>
---
 drivers/block/rnbd/rnbd-clt.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/block/rnbd/rnbd-clt.c b/drivers/block/rnbd/rnbd-clt.c
index 78334da74d8b..4f29364a6f4d 100644
--- a/drivers/block/rnbd/rnbd-clt.c
+++ b/drivers/block/rnbd/rnbd-clt.c
@@ -1369,12 +1369,7 @@ static int rnbd_clt_setup_gen_disk(struct rnbd_clt_dev *dev,
 {
 	int err;
 
-	dev->gd->major		= rnbd_client_major;
-	dev->gd->first_minor	= idx << RNBD_PART_BITS;
-	dev->gd->minors		= 1 << RNBD_PART_BITS;
-	dev->gd->fops		= &rnbd_client_ops;
 	dev->gd->queue		= dev->queue;
-	dev->gd->private_data	= dev;
 	snprintf(dev->gd->disk_name, sizeof(dev->gd->disk_name), "rnbd%d",
 		 idx);
 	pr_debug("disk_name=%s, capacity=%llu\n",
@@ -1382,7 +1377,9 @@ static int rnbd_clt_setup_gen_disk(struct rnbd_clt_dev *dev,
 		 le64_to_cpu(rsp->nsectors) *
 		 (le16_to_cpu(rsp->logical_block_size) / SECTOR_SIZE));
 
-	set_capacity(dev->gd, le64_to_cpu(rsp->nsectors));
+	init_disk(dev->gd, rnbd_client_major, idx << RNBD_PART_BITS,
+			1 << RNBD_PART_BITS, le64_to_cpu(rsp->nsectors), dev,
+			&rnbd_client_ops);
 
 	if (dev->access_mode == RNBD_ACCESS_RO)
 		set_disk_ro(dev->gd, true);
-- 
2.29.0