1 files changed, 2 insertions, 2 deletions

diff --git a/fs/buffer.c b/fs/buffer.c
index 22ed55198f3d..189efa4efc6e 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2211,8 +2211,8 @@ out:
         return err;
 }
 
-int cont_expand_zero(struct file *file, struct address_space *mapping,
-                        loff_t pos, loff_t *bytes)
+static int cont_expand_zero(struct file *file, struct address_space *mapping,
+                            loff_t pos, loff_t *bytes)
 {
         struct inode *inode = mapping->host;
         unsigned blocksize = 1 << inode->i_blkbits;