jffs2: remove lock_super

We do not need 'lock_super()'/'unlock_super()' in JFFS2 - kill them.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/jffs2/super.c

@@ -67,15 +67,12 @@ static void jffs2_write_super(struct super_block *sb)
 {
 	struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
 
-	lock_super(sb);
 	sb->s_dirt = 0;
 
 	if (!(sb->s_flags & MS_RDONLY)) {
 		jffs2_dbg(1, "%s()\n", __func__);
 		jffs2_flush_wbuf_gc(c, 0);
 	}
-
-	unlock_super(sb);
 }
 
 static const char *jffs2_compr_name(unsigned int compr)