1 files changed, 1 insertions, 1 deletions

diff --git a/fs/sync.c b/fs/sync.c
index 7cd005ea7639..228e17b5e9ee 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -64,7 +64,7 @@ int file_fsync(struct file *filp, struct dentry *dentry, int datasync)
         /* sync the superblock to buffers */
         sb = inode->i_sb;
         lock_super(sb);
-        if (sb->s_op->write_super)
+        if (sb->s_dirt && sb->s_op->write_super)
                 sb->s_op->write_super(sb);
         unlock_super(sb);