--- ./arch/um/kernel/syscall_kern.c.proc_mm	2003-12-21 23:11:47.000000000 +0100
+++ ./arch/um/kernel/syscall_kern.c	2003-12-25 17:53:08.000000000 +0100
@@ -65,6 +65,21 @@
 	return(ret);
 }
 
+/* If SKAS patch is applied and PROC_MM is on, then we get this def from
+ * linux/mm.h; but this will maybe change, as it's unclean. But anyway skas3
+ * is going away, so who cares? Without CONFIG_PROC_MM, the first param is just
+ * ignored, i.e. it is always current->mm. This is safe as without that patch
+ * nobody passes us a different value.*/
+#ifndef CONFIG_PROC_MM
+static inline unsigned long __do_mmap_pgoff(
+				struct mm_struct *mm, struct file *file, 
+				unsigned long addr, unsigned long len,
+				unsigned long prot, unsigned long flag,
+				unsigned long pgoff) {
+	return do_mmap_pgoff(file, addr, len, prot, flag, pgoff);
+}
+#endif
+
 /* common code for old and new mmaps */
 long do_mmap2(struct mm_struct *mm, unsigned long addr, unsigned long len,
 	      unsigned long prot, unsigned long flags, unsigned long fd,
@@ -81,7 +96,7 @@
 	}
 
 	down_write(&mm->mmap_sem);
-	error = do_mmap_pgoff(mm, file, addr, len, prot, flags, pgoff);
+	error = __do_mmap_pgoff(mm, file, addr, len, prot, flags, pgoff);
 	up_write(&mm->mmap_sem);
 
 	if (file)
--- ./arch/um/kernel/ptrace.c.proc_mm	2003-12-21 23:11:47.000000000 +0100
+++ ./arch/um/kernel/ptrace.c	2003-12-25 17:43:59.000000000 +0100
@@ -24,11 +24,6 @@
 { 
 }
 
-extern long do_mmap2(struct task_struct *task, unsigned long addr, 
-		     unsigned long len, unsigned long prot, 
-		     unsigned long flags, unsigned long fd,
-		     unsigned long pgoff);
-
 int sys_ptrace(long request, long pid, long addr, long data)
 {
 	struct task_struct *child;
--- ./arch/um/Kconfig.proc_mm	2003-12-21 23:11:47.000000000 +0100
+++ ./arch/um/Kconfig	2003-12-25 18:03:30.000000000 +0100
@@ -196,9 +196,6 @@
 config HIGHMEM
 	bool "Highmem support"
 
-config PROC_MM
-	bool "/proc/mm support"
-
 config KERNEL_STACK_ORDER
 	int "Kernel stack size order"
 	default 2