Index: linux-2.6.14-rc5-mm1/mm/mempolicy.c
===================================================================
--- linux-2.6.14-rc5-mm1.orig/mm/mempolicy.c	2005-11-04 11:50:24.000000000 -0800
+++ linux-2.6.14-rc5-mm1/mm/mempolicy.c	2005-11-04 14:17:19.000000000 -0800
@@ -185,13 +185,14 @@ static struct mempolicy *mpol_new(int mo
 }
 
 /* Check if we are the only process mapping the page in question */
-static inline int single_mm_mapping(struct mm_struct *mm,
+static int single_mm_mapping(struct mm_struct *mm,
 			struct address_space *mapping)
 {
 	struct vm_area_struct *vma;
 	struct prio_tree_iter iter;
 	int rc = 1;
 
+	printk(KERN_ERR "single_mm_mapping: %p %p\n", mm, mapping);
 	spin_lock(&mapping->i_mmap_lock);
 	vma_prio_tree_foreach(vma, &iter, &mapping->i_mmap, 0, ULONG_MAX)
 		if (mm != vma->vm_mm) {
@@ -214,10 +215,16 @@ out:
 static void migrate_page_add(struct vm_area_struct *vma,
 	struct page *page, struct list_head *pagelist, unsigned long flags)
 {
+	printk(KERN_ERR "migrate_page_add %p %p %p %lx\n", vma, page, pagelist, flags);
+	printk(KERN_ERR "page->mapping %p flags =%lx count=%d map=%d\n", page->mapping, page->flags, page_count(page), page_mapcount(page));
+
+	/* pages without mapping will be migrated */
+
 	/*
 	 * Avoid migrating a page that is shared by others and not writable.
 	 */
 	if ((flags & MPOL_MF_MOVE_ALL) ||
+	    !page->mapping ||
 	    PageAnon(page) ||
 	    mapping_writably_mapped(page->mapping) ||
 	    single_mm_mapping(vma->vm_mm, page->mapping)
@@ -258,6 +265,7 @@ static int check_pte_range(struct vm_are
 			continue;
 		}
 		nid = pfn_to_nid(pfn);
+		printk(KERN_ERR "check_pte_range: Node=%d nodes=%lx flags=%lx\n", nid, nodes->bits[0], flags);
 		if (!node_isset(nid, *nodes) == !(flags & MPOL_MF_INVERT)) {
 			if (pagelist) {
 				struct page *page = pfn_to_page(pfn);
@@ -357,12 +365,16 @@ check_range(struct mm_struct *mm, unsign
 	int err;
 	struct vm_area_struct *first, *vma, *prev;
 
+	printk(KERN_ERR "check_range %p %lx-%lx nodes=%lx flags=%lx pl=%p\n",mm, start, end, nodes->bits[0], flags, pagelist);
 	first = find_vma(mm, start);
+	printk(KERN_ERR "1\n");
 	if (!first)
 		return ERR_PTR(-EFAULT);
-	if (first->vm_flags & VM_RESERVED)
+	printk(KERN_ERR "2\n");
+	if (first->vm_flags & VM_RESERVED && !(flags & MPOL_MF_DISCONTIG_OK))
 		return ERR_PTR(-EACCES);
 	prev = NULL;
+	printk(KERN_ERR "3\n");
 	for (vma = first; vma && vma->vm_start < end; vma = vma->vm_next) {
 		if (!(flags & MPOL_MF_DISCONTIG_OK)) {
 			if (!vma->vm_next && vma->vm_end < end)
@@ -370,12 +382,15 @@ check_range(struct mm_struct *mm, unsign
 			if (prev && prev->vm_end < vma->vm_start)
 				return ERR_PTR(-EFAULT);
 		}
+		printk(KERN_ERR "4\n");
 		if (!is_vm_hugetlb_page(vma) &&
 		    ((flags & MPOL_MF_STRICT) ||
 		     ((flags & (MPOL_MF_MOVE | MPOL_MF_MOVE_ALL)) &&
 		      vma_migratable(vma)
 		   ))) {
 			unsigned long endvma = vma->vm_end;
+
+			printk(KERN_ERR "vma from %lx-%lx\n",vma->vm_start, vma->vm_end);
 			if (endvma > end)
 				endvma = end;
 			if (vma->vm_start > start)
@@ -462,6 +477,7 @@ static int migrate_pages_to(struct list_
 	struct page *page;
 	struct list_head *p;
 
+	printk(KERN_ERR "Migrate pages to\n");
 	list_for_each(p, pagelist) {
 		if (vma)
 			page = alloc_page_vma(GFP_HIGHUSER, vma,
@@ -495,12 +511,17 @@ long do_mbind(unsigned long start, unsig
 	int err;
 	LIST_HEAD(pagelist);
 
+	printk(KERN_ERR "do_mbind\n");
 	if ((flags & ~(unsigned long)(MPOL_MF_STRICT | MPOL_MF_MOVE | MPOL_MF_MOVE_ALL))
 	    || mode > MPOL_MAX)
 		return -EINVAL;
+
+	printk(KERN_ERR "1\n");
 	if ((flags & MPOL_MF_MOVE_ALL) && !capable(CAP_SYS_RESOURCE))
 		return -EPERM;
 
+
+	printk(KERN_ERR "2\n");
 	if (start & ~PAGE_MASK)
 		return -EINVAL;
 
@@ -510,14 +531,17 @@ long do_mbind(unsigned long start, unsig
 	len = (len + PAGE_SIZE - 1) & PAGE_MASK;
 	end = start + len;
 
+	printk(KERN_ERR "3\n");
 	if (end < start)
 		return -EINVAL;
 	if (end == start)
 		return 0;
 
+	printk(KERN_ERR "4\n");
 	if (mpol_check_policy(mode, nmask))
 		return -EINVAL;
 
+	printk(KERN_ERR "5\n");
 	new = mpol_new(mode, nmask);
 	if (IS_ERR(new))
 		return PTR_ERR(new);
@@ -688,6 +712,7 @@ int migrate_to_node(struct mm_struct *mm
 	LIST_HEAD(pagelist);
 	int err = 0;
 
+	printk(KERN_ERR "migrate_to_node %p %d->%d %x\n",mm, source, dest,flags);
 	nodes_clear(nmask);
 	node_set(source, nmask);
 
@@ -702,7 +727,8 @@ int migrate_to_node(struct mm_struct *mm
 		if (!list_empty(&pagelist))
 			putback_lru_pages(&pagelist);
 
-	}
+	} else
+		printk(KERN_ERR "pagelist empty\n");
 	return err;
 }
 
@@ -720,6 +746,7 @@ int do_migrate_pages(struct mm_struct *m
 	nodemask_t tmp;
 	int busy = 0;
 
+	printk("do_migrate_pages\n");
 	down_read(&mm->mmap_sem);
 
 /* Find a 'source' bit set in 'tmp' whose corresponding 'dest'
@@ -861,6 +888,7 @@ asmlinkage long sys_mbind(unsigned long 
 	nodemask_t nodes;
 	int err;
 
+	printk(KERN_ERR "sys_mbind\n");
 	err = get_nodes(&nodes, nmask, maxnode);
 	if (err)
 		return err;
Index: linux-2.6.14-rc5-mm1/Makefile
===================================================================
--- linux-2.6.14-rc5-mm1.orig/Makefile	2005-10-31 14:11:08.000000000 -0800
+++ linux-2.6.14-rc5-mm1/Makefile	2005-11-04 12:01:58.000000000 -0800
@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 14
-EXTRAVERSION =-rc5-mm1
+EXTRAVERSION =-rc5-mm1-mig
 NAME=Affluent Albatross
 
 # *DOCUMENTATION*
Index: linux-2.6.14-rc5-mm1/mm/vmscan.c
===================================================================
--- linux-2.6.14-rc5-mm1.orig/mm/vmscan.c	2005-11-04 11:50:31.000000000 -0800
+++ linux-2.6.14-rc5-mm1/mm/vmscan.c	2005-11-04 12:01:58.000000000 -0800
@@ -734,6 +734,7 @@ int migrate_page_remove_references(struc
 void migrate_page_copy(struct page *newpage, struct page *page)
 {
 
+	printk(KERN_ERR "migrate_page_copy %p->%p\n", page, newpage);
 	copy_highpage(newpage, page);
 
 	if (PageError(page))
@@ -821,6 +822,7 @@ int migrate_pages(struct list_head *l, s
 	int swapwrite = current->flags & PF_SWAPWRITE;
 	int rc = 0;
 
+	printk(KERN_ERR "migrate pages\n");
 	if (!swapwrite)
 		current->flags |= PF_SWAPWRITE;
 
Index: linux-2.6.14-rc5-mm1/mm/rmap.c
===================================================================
--- linux-2.6.14-rc5-mm1.orig/mm/rmap.c	2005-11-04 10:24:09.000000000 -0800
+++ linux-2.6.14-rc5-mm1/mm/rmap.c	2005-11-04 12:01:58.000000000 -0800
@@ -583,6 +583,7 @@ static int try_to_unmap_one(struct page 
 			spin_unlock(&mmlist_lock);
 		}
 		set_pte_at(mm, address, pte, swp_entry_to_pte(entry));
+		printk(KERN_ERR "swap pte installed at %p %ld %p\n", page, address, pte);
 		BUG_ON(pte_file(*pte));
 		dec_mm_counter(mm, anon_rss);
 	} else