Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
---
block/ioctl.c | 5 ++++-
include/linux/blk_types.h | 2 +-
include/linux/blkdev.h | 4 ++--
3 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/block/ioctl.c b/block/ioctl.c
index 0c76137adcaa..be173e4ff43d 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -402,7 +402,10 @@ static int blkdev_roset(struct block_device *bdev, unsigned cmd,
if (ret)
return ret;
}
- bdev->bd_read_only = n;
+ if (n)
+ bdev_set_flag(bdev, BD_READ_ONLY);
+ else
+ bdev_clear_flag(bdev, BD_READ_ONLY);
return 0;
}
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 04f92737ab08..f70dd31cbcd1 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -47,7 +47,7 @@ struct block_device {
unsigned long bd_stamp;
atomic_t __bd_flags; // partition number + flags
#define BD_PARTNO 255 // lower 8 bits; assign-once
- bool bd_read_only; /* read-only policy */
+#define BD_READ_ONLY (1u<<8) // read-only policy
bool bd_write_holder;
bool bd_has_submit_bio;
dev_t bd_dev;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 99917e5860fd..1fe91231f85b 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -742,13 +742,13 @@ static inline void bdev_clear_flag(struct block_device *bdev, unsigned flag)
static inline int get_disk_ro(struct gendisk *disk)
{
- return disk->part0->bd_read_only ||
+ return bdev_test_flag(disk->part0, BD_READ_ONLY) ||
test_bit(GD_READ_ONLY, &disk->state);
}
static inline int bdev_read_only(struct block_device *bdev)
{
- return bdev->bd_read_only || get_disk_ro(bdev->bd_disk);
+ return bdev_test_flag(bdev, BD_READ_ONLY) || get_disk_ro(bdev->bd_disk);
}
bool set_capacity_and_notify(struct gendisk *disk, sector_t size);
--
2.39.2
