diff --git a/fs/block_dev.c b/fs/block_dev.c
index 2091db8..2562330 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -606,7 +606,7 @@
 	return bdev;
 }
 
-static inline int sb_is_blkdev_sb(struct super_block *sb)
+int sb_is_blkdev_sb(struct super_block *sb)
 {
 	return sb == blockdev_superblock;
 }