[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, 3 insertions, 3 deletions

diff --git a/arch/ppc/mm/init.c b/arch/ppc/mm/init.c
index 134db5c04203..cb1c294fb932 100644
--- a/arch/ppc/mm/init.c
+++ b/arch/ppc/mm/init.c
@@ -140,7 +140,7 @@ static void free_sec(unsigned long start, unsigned long end, const char *name)
 
         while (start < end) {
                 ClearPageReserved(virt_to_page(start));
-                set_page_count(virt_to_page(start), 1);
+                init_page_count(virt_to_page(start));
                 free_page(start);
                 cnt++;
                 start += PAGE_SIZE;
@@ -172,7 +172,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
 
         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++;
         }
@@ -441,7 +441,7 @@ void __init mem_init(void)
                         struct page *page = mem_map + pfn;
 
                         ClearPageReserved(page);
-                        set_page_count(page, 1);
+                        init_page_count(page);
                         __free_page(page);
                         totalhigh_pages++;
                 }