From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-raid@vger.kernel.org, Jan Hoeppner <hoeppner@linux.ibm.com>,
Vignesh Raghavendra <vigneshr@ti.com>,
linux-s390@vger.kernel.org, Richard Weinberger <richard@nod.at>,
linux-block@vger.kernel.org, Song Liu <song@kernel.org>,
linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org,
Stefan Haberland <sth@linux.ibm.com>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Ilya Dryomov <idryomov@gmail.com>,
ceph-devel@vger.kernel.org
Subject: [PATCH 05/11] rbd: implement ->set_read_only to hook into BLKROSET processing
Date: Sat, 31 Oct 2020 09:58:04 +0100 [thread overview]
Message-ID: <20201031085810.450489-6-hch@lst.de> (raw)
In-Reply-To: <20201031085810.450489-1-hch@lst.de>
Implement the ->set_read_only method instead of parsing the actual
ioctl command.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/block/rbd.c | 41 ++++-------------------------------------
1 file changed, 4 insertions(+), 37 deletions(-)
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index f84128abade319..37f8fc28004acb 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -692,12 +692,9 @@ static void rbd_release(struct gendisk *disk, fmode_t mode)
put_device(&rbd_dev->dev);
}
-static int rbd_ioctl_set_ro(struct rbd_device *rbd_dev, unsigned long arg)
+static int rbd_set_read_only(struct block_device *bdev, bool ro)
{
- int ro;
-
- if (get_user(ro, (int __user *)arg))
- return -EFAULT;
+ struct rbd_device *rbd_dev = bdev->bd_disk->private_data;
/*
* Both images mapped read-only and snapshots can't be marked
@@ -706,47 +703,17 @@ static int rbd_ioctl_set_ro(struct rbd_device *rbd_dev, unsigned long arg)
if (!ro) {
if (rbd_is_ro(rbd_dev))
return -EROFS;
-
rbd_assert(!rbd_is_snap(rbd_dev));
}
- /* Let blkdev_roset() handle it */
- return -ENOTTY;
-}
-
-static int rbd_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned int cmd, unsigned long arg)
-{
- struct rbd_device *rbd_dev = bdev->bd_disk->private_data;
- int ret;
-
- switch (cmd) {
- case BLKROSET:
- ret = rbd_ioctl_set_ro(rbd_dev, arg);
- break;
- default:
- ret = -ENOTTY;
- }
-
- return ret;
-}
-
-#ifdef CONFIG_COMPAT
-static int rbd_compat_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned int cmd, unsigned long arg)
-{
- return rbd_ioctl(bdev, mode, cmd, arg);
+ return 0;
}
-#endif /* CONFIG_COMPAT */
static const struct block_device_operations rbd_bd_ops = {
.owner = THIS_MODULE,
.open = rbd_open,
.release = rbd_release,
- .ioctl = rbd_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = rbd_compat_ioctl,
-#endif
+ .set_read_only = rbd_set_read_only,
};
/*
--
2.28.0
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next prev parent reply other threads:[~2020-10-31 9:11 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-31 8:57 block ioctl cleanups Christoph Hellwig
2020-10-31 8:58 ` [PATCH 01/11] mtd_blkdevs: don't override BLKFLSBUF Christoph Hellwig
2020-10-31 21:32 ` Richard Weinberger
2020-10-31 23:11 ` antlists
2020-10-31 8:58 ` [PATCH 02/11] mtip32xx: return -ENOTTY for all unhanled ioctls Christoph Hellwig
2020-10-31 14:58 ` Jens Axboe
2020-11-01 10:27 ` Christoph Hellwig
2020-11-01 16:45 ` Jens Axboe
2020-10-31 8:58 ` [PATCH 03/11] block: don't call into the driver for BLKFLSBUF Christoph Hellwig
2020-10-31 8:58 ` [PATCH 04/11] block: add a new set_read_only method Christoph Hellwig
2020-10-31 8:58 ` Christoph Hellwig [this message]
2020-11-02 11:30 ` [PATCH 05/11] rbd: implement ->set_read_only to hook into BLKROSET processing Ilya Dryomov
2020-10-31 8:58 ` [PATCH 06/11] md: " Christoph Hellwig
2020-11-03 0:19 ` James Troup
2020-11-03 9:32 ` Christoph Hellwig
2020-10-31 8:58 ` [PATCH 07/11] dasd: " Christoph Hellwig
2020-10-31 8:58 ` [PATCH 08/11] block: don't call into the driver for BLKROSET Christoph Hellwig
2020-10-31 8:58 ` [PATCH 09/11] loop: use set_disk_ro Christoph Hellwig
2020-10-31 8:58 ` [PATCH 10/11] block: remove set_device_ro Christoph Hellwig
2020-10-31 8:58 ` [PATCH 11/11] block: remove __blkdev_driver_ioctl Christoph Hellwig
2020-11-01 16:46 ` block ioctl cleanups Jens Axboe
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