--- linux/include/linux/quotaops.h-o	Tue May  2 14:00:17 2000
+++ linux/include/linux/quotaops.h	Tue May  2 14:01:56 2000
@@ -98,7 +98,7 @@
 {
 	int error = -EDQUOT;
 
-	if (dentry->d_inode->i_sb->dq_op) {
+	if (dentry->d_inode->i_sb && dentry->d_inode->i_sb->dq_op) {
 		dentry->d_inode->i_sb->dq_op->initialize(dentry->d_inode, -1);
 		error = dentry->d_inode->i_sb->dq_op->transfer(dentry, iattr, current->fsuid);
 	} else {