--- linux-2.6.16.17/fs/namei.c	2006-04-17 19:46:42 +0200
+++ linux-2.6.16.17/fs/namei.c	2006-05-21 17:18:24 +0200
@@ -1536,8 +1536,12 @@ int may_open(struct nameidata *nd, int a
 		return -EISDIR;
 
 #ifdef	CONFIG_VSERVER_COWBL
-	if (IS_COW_LINK(inode) && (flag & FMODE_WRITE))
-		return -EMLINK;
+	if (IS_COW(inode) && (flag & FMODE_WRITE)) {
+		if (IS_COW_LINK(inode))
+			return -EMLINK;
+		inode->i_flags &= ~(S_IUNLINK|S_IMMUTABLE);
+		mark_inode_dirty(inode);
+	}
 #endif
 	error = vfs_permission(nd, acc_mode);
 	if (error)
--- linux-2.6.16.17/include/linux/fs.h	2006-03-27 20:01:57 +0200
+++ linux-2.6.16.17/include/linux/fs.h	2006-05-21 17:16:50 +0200
@@ -176,9 +176,8 @@ extern int dir_notify_enable;
 #define IS_SWAPFILE(inode)	((inode)->i_flags & S_SWAPFILE)
 #define IS_PRIVATE(inode)	((inode)->i_flags & S_PRIVATE)
 
-#define IS_COW_LINK(inode)	(S_ISREG((inode)->i_mode) && \
-					((inode)->i_nlink > 1) && \
-					IS_IUNLINK(inode) && IS_IMMUTABLE(inode))
+#define IS_COW(inode)		(IS_IUNLINK(inode) && IS_IMMUTABLE(inode))
+#define IS_COW_LINK(inode)	(S_ISREG((inode)->i_mode) && ((inode)->i_nlink > 1))
 
 /* the read-only stuff doesn't really belong here, but any other place is
    probably as bad and I don't want to create yet another include file. */