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-rw-r--r--fs/internal.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/internal.h b/fs/internal.h
index f662b703bb9..f07147d6325 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -14,10 +14,16 @@
/*
* block_dev.c
*/
+#ifdef CONFIG_BLOCK
extern struct super_block *blockdev_superblock;
extern void __init bdev_cache_init(void);
#define sb_is_blkdev_sb(sb) ((sb) == blockdev_superblock)
+#else
+static inline void bdev_cache_init(void) {}
+
+#define sb_is_blkdev_sb(sb) 0
+#endif
/*
* char_dev.c