Add block device freeze and thaw holder operations. Follow-up patches
will implement block device freeze and thaw based on stuct
blk_holder_ops.
Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
---
include/linux/blkdev.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index bf25b63e13d5..f2ddccaaef4d 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1468,6 +1468,16 @@ struct blk_holder_ops {
* Sync the file system mounted on the block device.
*/
void (*sync)(struct block_device *bdev);
+
+ /*
+ * Freeze the file system mounted on the block device.
+ */
+ int (*freeze)(struct block_device *bdev);
+
+ /*
+ * Thaw the file system mounted on the block device.
+ */
+ int (*thaw)(struct block_device *bdev);
};
extern const struct blk_holder_ops fs_holder_ops;
--
2.34.1
