Optimise bad_page slightly by not passing in the function name (it
will be displayed by dump_stack()).

Index: linux-2.6/mm/page_alloc.c
===================================================================
--- linux-2.6.orig/mm/page_alloc.c
+++ linux-2.6/mm/page_alloc.c
@@ -102,14 +102,13 @@ static inline int bad_range(struct zone 
 }
 #endif
 
-static void bad_page(const char *function, struct page *page)
+static void bad_page(struct page *page)
 {
-	printk(KERN_EMERG "Bad page state at %s (in process '%s', page %p)\n",
-		function, current->comm, page);
-	printk(KERN_EMERG "flags:0x%0*lx mapping:%p mapcount:%d count:%d\n",
-		(int)(2*sizeof(page_flags_t)), (unsigned long)page->flags,
+	printk(KERN_EMERG "Bad page state in process '%s'\n", current->comm);
+	printk(KERN_EMERG "page:%p flags:0x%0*lx "
+			  "mapping:%p mapcount:%d count:%d\n",
+		page, (int)(2*sizeof(page_flags_t)), (unsigned long)page->flags,
 		page->mapping, page_mapcount(page), page_count(page));
-	printk(KERN_EMERG "Backtrace:\n");
 	dump_stack();
 	printk(KERN_EMERG "Trying to fix it up, but a reboot is needed\n");
 	page->flags &= ~(1 << PG_lru	|
@@ -169,19 +168,15 @@ static void destroy_compound_page(struct
 	int i;
 	int nr_pages = 1 << order;
 
-	if (!PageCompound(page))
-		return;
-
-	if (page[1].index != order)
-		bad_page(__FUNCTION__, page);
+	if (unlikely(page[1].index != order))
+		bad_page(page);
 
 	for (i = 0; i < nr_pages; i++) {
 		struct page *p = page + i;
 
-		if (!PageCompound(p))
-			bad_page(__FUNCTION__, page);
-		if (page_private(p) != (unsigned long)page)
-			bad_page(__FUNCTION__, page);
+		if (unlikely(!PageCompound(p)) ||
+				page_private(p) != (unsigned long)page))
+			bad_page(page);
 		ClearPageCompound(p);
 	}
 }
@@ -286,7 +281,7 @@ static inline void __free_pages_bulk (st
 	unsigned long page_idx;
 	int order_size = 1 << order;
 
-	if (unlikely(order))
+	if (unlikely(PageCompound(page)))
 		destroy_compound_page(page, order);
 
 	page_idx = page_to_pfn(page) & ((1 << MAX_ORDER) - 1);
@@ -320,11 +315,11 @@ static inline void __free_pages_bulk (st
 	zone->free_area[order].nr_free++;
 }
 
-static inline void free_pages_check(const char *function, struct page *page)
+static inline void free_pages_check(struct page *page)
 {
-	if (	page_mapcount(page) ||
-		page->mapping != NULL ||
-		page_count(page) != 0 ||
+	if (unlikely(page_mapcount(page) |
+		(page->mapping != NULL)  |
+		(page_count(page) != 0)  |
 		(page->flags & (
 			1 << PG_lru	|
 			1 << PG_private |
@@ -334,8 +329,8 @@ static inline void free_pages_check(cons
 			1 << PG_slab	|
 			1 << PG_swapcache |
 			1 << PG_writeback |
-			1 << PG_reserved )))
-		bad_page(function, page);
+			1 << PG_reserved ))))
+		bad_page(page);
 	if (PageDirty(page))
 		__ClearPageDirty(page);
 }
@@ -389,7 +384,7 @@ void __free_pages_ok(struct page *page, 
 #endif
 
 	for (i = 0 ; i < (1 << order) ; ++i)
-		free_pages_check(__FUNCTION__, page + i);
+		free_pages_check(page + i);
 	list_add(&page->lru, &list);
 	kernel_map_pages(page, 1<<order, 0);
 	local_irq_save(flags);
@@ -449,7 +444,7 @@ static void prep_new_page(struct page *p
 			1 << PG_swapcache |
 			1 << PG_writeback |
 			1 << PG_reserved ))))
-		bad_page(__FUNCTION__, page);
+		bad_page(page);
 
 	page->flags &= ~(1 << PG_uptodate | 1 << PG_error |
 			1 << PG_referenced | 1 << PG_arch_1 |
@@ -645,7 +640,7 @@ static void fastcall free_hot_cold_page(
 	inc_page_state(pgfree);
 	if (PageAnon(page))
 		page->mapping = NULL;
-	free_pages_check(__FUNCTION__, page);
+	free_pages_check(page);
 	pcp = &zone_pcp(zone, get_cpu())->pcp[cold];
 	local_irq_save(flags);
 	list_add(&page->lru, &pcp->list);