JFFS2: make sync() actually work by providing ->sync_fs method.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

fs/jffs2/super.c

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: super.c,v 1.100 2004/10/21 00:03:50 dwmw2 Exp $
+ * $Id: super.c,v 1.102 2004/11/12 02:42:17 tpoynor Exp $
  *
  */
 
@@ -56,6 +56,16 @@ static void jffs2_i_init_once(void * foo, kmem_cache_t * cachep, unsigned long f
 	}
 }
 
+static int jffs2_sync_fs(struct super_block *sb, int wait)
+{
+	struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
+
+	down(&c->alloc_sem);
+	jffs2_flush_wbuf_pad(c);
+	up(&c->alloc_sem);	
+	return 0;
+}
+
 static struct super_operations jffs2_super_operations =
 {
 	.alloc_inode =	jffs2_alloc_inode,
@@ -67,6 +77,7 @@ static struct super_operations jffs2_super_operations =
 	.remount_fs =	jffs2_remount_fs,
 	.clear_inode =	jffs2_clear_inode,
 	.dirty_inode =	jffs2_dirty_inode,
+	.sync_fs =	jffs2_sync_fs,
 };
 
 static int jffs2_sb_compare(struct super_block *sb, void *data)