linux-kernel - [RFC PATCH v1 17/33] mm/parisc: use common help functions to free reserved pages

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Message-Id: <1362495317-32682-18-git-send-email-jiang.liu@huawei.com>
Date:	Tue,  5 Mar 2013 22:55:00 +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,
	"James E.J. Bottomley" <jejb@...isc-linux.org>,
	Helge Deller <deller@....de>
Subject: [RFC PATCH v1 17/33] mm/parisc: 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: "James E.J. Bottomley" <jejb@...isc-linux.org>
Cc: Helge Deller <deller@....de>
---
 arch/parisc/mm/init.c |   24 +++---------------------
 1 file changed, 3 insertions(+), 21 deletions(-)

diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 3ac462d..153510f 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -505,7 +505,6 @@ static void __init map_pages(unsigned long start_vaddr,
 
 void free_initmem(void)
 {
-	unsigned long addr;
 	unsigned long init_begin = (unsigned long)__init_begin;
 	unsigned long init_end = (unsigned long)__init_end;
 
@@ -533,19 +532,11 @@ void free_initmem(void)
 	 * pages are no-longer executable */
 	flush_icache_range(init_begin, init_end);
 	
-	for (addr = init_begin; addr < init_end; addr += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(addr));
-		init_page_count(virt_to_page(addr));
-		free_page(addr);
-		num_physpages++;
-		totalram_pages++;
-	}
+	num_physpages += free_reserved_area(init_begin, init_end,
+					    0, "unused kernel");
 
 	/* set up a new led state on systems shipped LED State panel */
 	pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BCOMPLETE);
-	
-	printk(KERN_INFO "Freeing unused kernel memory: %luk freed\n",
-		(init_end - init_begin) >> 10);
 }
 
 
@@ -1107,15 +1098,6 @@ void flush_tlb_all(void)
 #ifdef CONFIG_BLK_DEV_INITRD
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
-	if (start >= end)
-		return;
-	printk(KERN_INFO "Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
-	for (; start < end; start += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(start));
-		init_page_count(virt_to_page(start));
-		free_page(start);
-		num_physpages++;
-		totalram_pages++;
-	}
+	num_physpages += free_reserved_area(start, end, 0, "initrd");
 }
 #endif
-- 
1.7.9.5

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