ext4: fix delalloc i_disksize early update issue

[linux-2.6] / fs / sync.c

diff --git a/fs/sync.c b/fs/sync.c
index 2f97576..228e17b 100644 (file)
--- 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);
 
@@ -236,6 +236,14 @@ out:
        return ret;
 }
 
+/* It would be nice if people remember that not all the world's an i386
+   when they introduce new system calls */
+asmlinkage long sys_sync_file_range2(int fd, unsigned int flags,
+                                    loff_t offset, loff_t nbytes)
+{
+       return sys_sync_file_range(fd, offset, nbytes, flags);
+}
+
 /*
  * `endbyte' is inclusive
  */