linux-kernel - [PATCH v2, part1 25/29] mm/x86: use common help functions to free reserved pages

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Message-Id: <1362896833-21104-26-git-send-email-jiang.liu@huawei.com>
Date:	Sun, 10 Mar 2013 14:27:08 +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, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH v2, part1 25/29] mm/x86: 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: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
---
 arch/x86/mm/init.c    |    5 +----
 arch/x86/mm/init_64.c |    5 ++---
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 4903a03..4a705e6 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -516,11 +516,8 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
 	printk(KERN_INFO "Freeing %s: %luk freed\n", what, (end - begin) >> 10);
 
 	for (; 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++;
+		free_reserved_page(virt_to_page(addr));
 	}
 #endif
 }
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 474e28f..2ef81f1 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -1067,10 +1067,9 @@ void __init mem_init(void)
 
 	/* clear_bss() already clear the empty_zero_page */
 
-	reservedpages = 0;
-
-	/* this will put all low memory onto the freelists */
 	register_page_bootmem_info();
+
+	/* this will put all memory onto the freelists */
 	totalram_pages = free_all_bootmem();
 
 	absent_pages = absent_pages_in_range(0, max_pfn);
-- 
1.7.9.5

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