mm/m32r: use common help functions to free reserved pages

Use common help functions to free reserved pages.
Also include <asm/sections.h> to avoid local declarations.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 23 deletions

diff --git a/arch/m32r/mm/init.c b/arch/m32r/mm/init.c
index 78b660e903da..ab4cbce91a9b 100644
--- a/arch/m32r/mm/init.c
+++ b/arch/m32r/mm/init.c
@@ -28,10 +28,7 @@
 #include <asm/mmu_context.h>
 #include <asm/setup.h>
 #include <asm/tlb.h>
-
-/* References to section boundaries */
-extern char _text, _etext, _edata;
-extern char __init_begin, __init_end;
+#include <asm/sections.h>
 
 pgd_t swapper_pg_dir[1024];
 
@@ -184,17 +181,7 @@ void __init mem_init(void)
  *======================================================================*/
 void free_initmem(void)
 {
-        unsigned long addr;
-
-        addr = (unsigned long)(&__init_begin);
-        for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
-                ClearPageReserved(virt_to_page(addr));
-                init_page_count(virt_to_page(addr));
-                free_page(addr);
-                totalram_pages++;
-        }
-        printk (KERN_INFO "Freeing unused kernel memory: %dk freed\n", \
-          (int)(&__init_end - &__init_begin) >> 10);
+        free_initmem_default(0);
 }
 
 #ifdef CONFIG_BLK_DEV_INITRD
@@ -204,13 +191,6 @@ void free_initmem(void)
  *======================================================================*/
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
-        unsigned long p;
-        for (p = start; p < end; p += PAGE_SIZE) {
-                ClearPageReserved(virt_to_page(p));
-                init_page_count(virt_to_page(p));
-                free_page(p);
-                totalram_pages++;
-        }
-        printk (KERN_INFO "Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
+        free_reserved_area(start, end, 0, "initrd");
 }
 #endif