From: Jiang Liu <liuj97@gmail.com>
Date: Mon, 29 Apr 2013 22:06:58 +0000 (-0700)
Subject: mm,kexec: use common help functions to free reserved pages
X-Git-Tag: v3.10-rc1~183^2~86
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e07cee23e64137f7da2fb35d7b7c0ad26cc0edec;p=thirdparty%2Fkernel%2Flinux.git

mm,kexec: 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: Eric Biederman <ebiederm@xmission.com>
Reviewed-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/kernel/kexec.c b/kernel/kexec.c
index ffd4e111fd67e..b19181d442015 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1118,12 +1118,8 @@ void __weak crash_free_reserved_phys_range(unsigned long begin,
 {
 	unsigned long addr;
 
-	for (addr = begin; addr < end; addr += PAGE_SIZE) {
-		ClearPageReserved(pfn_to_page(addr >> PAGE_SHIFT));
-		init_page_count(pfn_to_page(addr >> PAGE_SHIFT));
-		free_page((unsigned long)__va(addr));
-		totalram_pages++;
-	}
+	for (addr = begin; addr < end; addr += PAGE_SIZE)
+		free_reserved_page(pfn_to_page(addr >> PAGE_SHIFT));
 }
 
 int crash_shrink_memory(unsigned long new_size)