mm/metag: use common help functions to free reserved pages

Use common help functions to free reserved pages.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/metag/mm/init.c b/arch/metag/mm/init.c
index 504a398..c6784fb 100644 (file)
--- a/arch/metag/mm/init.c
+++ b/arch/metag/mm/init.c
@@ -412,32 +412,15 @@ void __init mem_init(void)
        return;
 }
 
-static void free_init_pages(char *what, unsigned long begin, unsigned long end)
-{
-       unsigned long addr;
-
-       for (addr = begin; addr < end; addr += PAGE_SIZE) {
-               ClearPageReserved(virt_to_page(addr));
-               init_page_count(virt_to_page(addr));
-               memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
-               free_page(addr);
-               totalram_pages++;
-       }
-       pr_info("Freeing %s: %luk freed\n", what, (end - begin) >> 10);
-}
-
 void free_initmem(void)
 {
-       free_init_pages("unused kernel memory",
-                       (unsigned long)(&__init_begin),
-                       (unsigned long)(&__init_end));
+       free_initmem_default(POISON_FREE_INITMEM);
 }
 
 #ifdef CONFIG_BLK_DEV_INITRD
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
-       end = end & PAGE_MASK;
-       free_init_pages("initrd memory", start, end);
+       free_reserved_area(start, end, POISON_FREE_INITMEM, "initrd");
 }
 #endif