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-rw-r--r--include/linux/fs.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index a4acd3c61190..3f40547ba191 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2069,6 +2069,7 @@ extern struct super_block *freeze_bdev(struct block_device *);
extern void emergency_thaw_all(void);
extern int thaw_bdev(struct block_device *bdev, struct super_block *sb);
extern int fsync_bdev(struct block_device *);
+extern int sb_is_blkdev_sb(struct super_block *sb);
#else
static inline void bd_forget(struct inode *inode) {}
static inline int sync_blockdev(struct block_device *bdev) { return 0; }
@@ -2088,6 +2089,11 @@ static inline int thaw_bdev(struct block_device *bdev, struct super_block *sb)
static inline void iterate_bdevs(void (*f)(struct block_device *, void *), void *arg)
{
}
+
+static inline int sb_is_blkdev_sb(struct super_block *sb)
+{
+ return 0;
+}
#endif
extern int sync_filesystem(struct super_block *);
extern const struct file_operations def_blk_fops;