diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-11-03 11:00:11 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-11-16 08:14:29 -0700 |
| commit | e00adcadf3af7a8335026d71ab9f0e0a922191ac (patch) | |
| tree | 7d7f22326e387ef08b23cf9a3a76e6f16fc1b089 /block/ioctl.c | |
| parent | 4a9d6d667f0bafed55a9e9f5ae8bceb3680749d7 (diff) | |
| download | lwn-e00adcadf3af7a8335026d71ab9f0e0a922191ac.tar.gz lwn-e00adcadf3af7a8335026d71ab9f0e0a922191ac.zip | |
block: add a new set_read_only method
Add a new method to allow for driver-specific processing when setting or
clearing the block device read-only state. This allows to replace the
cumbersome and error-prone override of the whole ioctl implementation.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/ioctl.c')
| -rw-r--r-- | block/ioctl.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/block/ioctl.c b/block/ioctl.c index c6d8863f0409..a6fa16b97705 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -389,6 +389,11 @@ static int blkdev_roset(struct block_device *bdev, fmode_t mode, return ret; if (get_user(n, (int __user *)arg)) return -EFAULT; + if (bdev->bd_disk->fops->set_read_only) { + ret = bdev->bd_disk->fops->set_read_only(bdev, n); + if (ret) + return ret; + } set_device_ro(bdev, n); return 0; } |