Index: linux-2.6.16-rc5/mm/vmscan.c
===================================================================
--- linux-2.6.16-rc5.orig/mm/vmscan.c	2006-02-27 12:20:35.000000000 -0800
+++ linux-2.6.16-rc5/mm/vmscan.c	2006-02-27 12:20:44.000000000 -0800
@@ -928,14 +928,18 @@ redo:
 
 		newpage = lru_to_page(to);
 		lock_page(newpage);
+		printk(KERN_ERR "Migrating %p (node %ld)->%p (node %ld)\n", page, page_to_nid(page),
+			 newpage, page_to_nid(newpage));
 
 		/*
 		 * Pages are properly locked and writeback is complete.
 		 * Try to migrate the page.
 		 */
 		mapping = page_mapping(page);
-		if (!mapping)
+		if (!mapping) {
+			printk("No mapping\n");
 			goto unlock_both;
+		}
 
 		if (mapping->a_ops->migratepage) {
 			/*
@@ -945,6 +949,7 @@ redo:
 			 * own migration function. This is the most common
 			 * path for page migration.
 			 */
+			printk("Using Migration function %p\n", mapping->a_ops->migratepage);
 			rc = mapping->a_ops->migratepage(newpage, page);
 			goto unlock_both;
                 }
@@ -955,13 +960,16 @@ redo:
 		 * pages so try to write out any dirty pages first.
 		 */
 		if (PageDirty(page)) {
+			printk("Page Dirty.\n");
 			switch (pageout(page, mapping)) {
 			case PAGE_KEEP:
 			case PAGE_ACTIVATE:
+				printk("Pageout says keep page\n");
 				goto unlock_both;
 
 			case PAGE_SUCCESS:
 				unlock_page(newpage);
+				printk("Pageout success but it unlocked\n");
 				goto next;
 
 			case PAGE_CLEAN:
@@ -975,6 +983,7 @@ redo:
 		 */
 		if (!page_has_buffers(page) ||
 		    try_to_release_page(page, GFP_KERNEL)) {
+			printk("Default migration function.\n");
 			rc = migrate_page(newpage, page);
 			goto unlock_both;
 		}
@@ -993,6 +1002,7 @@ redo:
 			 */
 			unlock_page(newpage);
 			newpage = NULL;
+			printk("Fall back to swap\n");
 			rc = swap_page(page);
 			goto next;
 		}
@@ -1004,18 +1014,22 @@ unlock_page:
 		unlock_page(page);
 
 next:
+		printk("End %p\n",page);
 		if (rc == -EAGAIN) {
+			printk("* Need to retry page %p\n",page);
 			retry++;
 		} else if (rc) {
 			/* Permanent failure */
 			list_move(&page->lru, failed);
 			nr_failed++;
+			printk("* Permanent failure on %p\n",page);
 		} else {
 			if (newpage) {
 				/* Successful migration. Return page to LRU */
 				move_to_lru(newpage);
 			}
 			list_move(&page->lru, moved);
+			printk("* Successfully migrated %p\n",page);
 		}
 	}
 	if (retry && pass++ < 10)
Index: linux-2.6.16-rc5/mm/mempolicy.c
===================================================================
--- linux-2.6.16-rc5.orig/mm/mempolicy.c	2006-02-27 12:20:29.000000000 -0800
+++ linux-2.6.16-rc5/mm/mempolicy.c	2006-02-27 12:20:44.000000000 -0800
@@ -638,6 +638,7 @@ int migrate_to_node(struct mm_struct *mm
 	LIST_HEAD(pagelist);
 	int err = 0;
 
+	printk(KERN_ERR "--Migrating pages from node %d to %d\n", source, dest);
 	nodes_clear(nmask);
 	node_set(source, nmask);
 
Index: linux-2.6.16-rc5/fs/buffer.c
===================================================================
--- linux-2.6.16-rc5.orig/fs/buffer.c	2006-02-27 12:20:35.000000000 -0800
+++ linux-2.6.16-rc5/fs/buffer.c	2006-02-27 12:20:44.000000000 -0800
@@ -2029,6 +2029,7 @@ static int __block_commit_write(struct i
 	int partial = 0;
 	unsigned blocksize;
 	struct buffer_head *bh, *head;
+	int rc;
 
 	blocksize = 1 << inode->i_blkbits;