diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-11-03 13:00:11 +0300 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2024-03-27 01:22:34 +0300 |
| commit | f28658bc8a7faa03578dc2588b5b3b56b09575a6 (patch) | |
| tree | 6c14f929e8c4b67c81576f066f2ef45e0d69730d | |
| parent | dc51c01a3d5a796e18520a186f56e13f8e70749f (diff) | |
| download | linux-f28658bc8a7faa03578dc2588b5b3b56b09575a6.tar.xz | |
block: add a new set_read_only method
[ Upstream commit e00adcadf3af7a8335026d71ab9f0e0a922191ac ]
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>
Stable-dep-of: 9674f54e41ff ("md: Don't clear MD_CLOSING when the raid is about to stop")
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | block/ioctl.c | 5 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/block/ioctl.c b/block/ioctl.c index 3884d810efd2..6d6c4f4c411a 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -451,6 +451,11 @@ 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; } diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index ac407c1d4d40..8f0aafae09d9 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1997,6 +1997,7 @@ struct block_device_operations { void (*unlock_native_capacity) (struct gendisk *); int (*revalidate_disk) (struct gendisk *); int (*getgeo)(struct block_device *, struct hd_geometry *); + int (*set_read_only)(struct block_device *bdev, bool ro); /* this callback is with swap_lock and sometimes page table lock held */ void (*swap_slot_free_notify) (struct block_device *, unsigned long); struct module *owner; |