linux-kernel - [PATCH v2, part1 09/29] mm/h8300: use common help functions to free reserved pages

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Message-Id: <1362896833-21104-10-git-send-email-jiang.liu@huawei.com>
Date:	Sun, 10 Mar 2013 14:26:52 +0800
From:	Jiang Liu <liuj97@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	David Rientjes <rientjes@...gle.com>
Cc:	Jiang Liu <jiang.liu@...wei.com>,
	Wen Congyang <wency@...fujitsu.com>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Chris Clayton <chris2553@...glemail.com>,
	"Rafael J . Wysocki" <rjw@...k.pl>, Mel Gorman <mgorman@...e.de>,
	Minchan Kim <minchan@...nel.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Michal Hocko <mhocko@...e.cz>,
	Jianguo Wu <wujianguo@...wei.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Yoshinori Sato <ysato@...rs.sourceforge.jp>
Subject: [PATCH v2, part1 09/29] mm/h8300: use common help functions to free reserved pages

Use common help functions to free reserved pages.

Signed-off-by: Jiang Liu <jiang.liu@...wei.com>
Cc: Yoshinori Sato <ysato@...rs.sourceforge.jp>
---
 arch/h8300/mm/init.c |   30 +++---------------------------
 1 file changed, 3 insertions(+), 27 deletions(-)

diff --git a/arch/h8300/mm/init.c b/arch/h8300/mm/init.c
index 981e250..ff349d7 100644
--- a/arch/h8300/mm/init.c
+++ b/arch/h8300/mm/init.c
@@ -139,7 +139,7 @@ void __init mem_init(void)
 	start_mem = PAGE_ALIGN(start_mem);
 	max_mapnr = num_physpages = MAP_NR(high_memory);
 
-	/* this will put all memory onto the freelists */
+	/* this will put all low memory onto the freelists */
 	totalram_pages = free_all_bootmem();
 
 	codek = (_etext - _stext) >> 10;
@@ -161,15 +161,7 @@ void __init mem_init(void)
 #ifdef CONFIG_BLK_DEV_INITRD
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
-	int pages = 0;
-	for (; start < end; start += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(start));
-		init_page_count(virt_to_page(start));
-		free_page(start);
-		totalram_pages++;
-		pages++;
-	}
-	printk ("Freeing initrd memory: %dk freed\n", pages);
+	free_reserved_area(start, end, 0, "initrd");
 }
 #endif
 
@@ -177,23 +169,7 @@ void
 free_initmem(void)
 {
 #ifdef CONFIG_RAMKERNEL
-	unsigned long addr;
-/*
- *	the following code should be cool even if these sections
- *	are not page aligned.
- */
-	addr = PAGE_ALIGN((unsigned long)(__init_begin));
-	/* next to check that the page we free is not a partial page */
-	for (; addr + PAGE_SIZE < (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: %ldk freed (0x%x - 0x%x)\n",
-			(addr - PAGE_ALIGN((long) __init_begin)) >> 10,
-			(int)(PAGE_ALIGN((unsigned long)__init_begin)),
-			(int)(addr - PAGE_SIZE));
+	free_initmem_default(0);
 #endif
 }
 
-- 
1.7.9.5

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