Add a comment to @fs_holder_ops that @holder must point to a superblock.
Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
---
include/linux/blkdev.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 1bc776335ff8..abf71cce785c 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1480,6 +1480,11 @@ struct blk_holder_ops {
int (*thaw)(struct block_device *bdev);
};
+/*
+ * For filesystems using @fs_holder_ops, the @holder argument passed to
+ * helpers used to open and claim block devices via
+ * bd_prepare_to_claim() must point to a superblock.
+ */
extern const struct blk_holder_ops fs_holder_ops;
/*
--
2.34.1
