[PATCH] remove set_page_count() outside mm/

set_page_count usage outside mm/ is limited to setting the refcount to 1.
Remove set_page_count from outside mm/, and replace those users with
init_page_count() and set_page_refcounted().

This allows more debug checking, and tighter control on how code is allowed
to play around with page->_count.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index fa4f915..92cce96 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -57,7 +57,7 @@ static void setup_highmem(unsigned long highmem_start,
 	for(i = 0; i < highmem_len >> PAGE_SHIFT; i++){
 		page = &mem_map[highmem_pfn + i];
 		ClearPageReserved(page);
-		set_page_count(page, 1);
+		init_page_count(page);
 		__free_page(page);
 	}
 }
@@ -296,7 +296,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
 			(end - start) >> 10);
 	for (; start < end; start += PAGE_SIZE) {
 		ClearPageReserved(virt_to_page(start));
-		set_page_count(virt_to_page(start), 1);
+		init_page_count(virt_to_page(start));
 		free_page(start);
 		totalram_pages++;
 	}