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bdev: add freeze and thaw holder operations

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Add block device freeze and thaw holder operations. Follow-up patches
will implement block device freeze and thaw based on stuct
blk_holder_ops.

Link: https://lore.kernel.org/r/20231024-vfs-super-freeze-v2-4-599c19f4faac@kernel.org
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner
2023-10-24 15:01:10 +02:00
parent fbcb8f39e9
commit a30561a9be
1 changed files with 10 additions and 0 deletions
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10
include/linux/blkdev.h
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@@ -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;