Implement the ->set_read_only method instead of parsing the actual
ioctl command.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
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
