linux-kernel - Re: [PATCH v2, part2 08/10] mm/SPARC: use free_highmem_page() to free highmem pages into buddy system

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <5140AD9B.1030509@gmail.com>
Date:	Thu, 14 Mar 2013 00:47:23 +0800
From:	Jiang Liu <liuj97@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	David Rientjes <rientjes@...gle.com>,
	Jiang Liu <jiang.liu@...wei.com>,
	Wen Congyang <wency@...fujitsu.com>,
	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,
	"David S. Miller" <davem@...emloft.net>,
	Sam Ravnborg <sam@...nborg.org>, sparclinux@...r.kernel.org
Subject: Re: [PATCH v2, part2 08/10] mm/SPARC: use free_highmem_page() to
 free highmem pages into buddy system

On 03/13/2013 05:42 AM, Andrew Morton wrote:
> On Sun, 10 Mar 2013 16:01:08 +0800 Jiang Liu <liuj97@...il.com> wrote:
> 
>> Use helper function free_highmem_page() to free highmem pages into
>> the buddy system.
>>
>> ...
>>
>> --- a/arch/sparc/mm/init_32.c
>> +++ b/arch/sparc/mm/init_32.c
>> @@ -282,14 +282,8 @@ static void map_high_region(unsigned long start_pfn, unsigned long end_pfn)
>>  	printk("mapping high region %08lx - %08lx\n", start_pfn, end_pfn);
>>  #endif
>>  
>> -	for (tmp = start_pfn; tmp < end_pfn; tmp++) {
>> -		struct page *page = pfn_to_page(tmp);
>> -
>> -		ClearPageReserved(page);
>> -		init_page_count(page);
>> -		__free_page(page);
>> -		totalhigh_pages++;
>> -	}
>> +	for (tmp = start_pfn; tmp < end_pfn; tmp++)
>> +		free_higmem_page(pfn_to_page(tmp));
>>  }
> 
> This code isn't inside #ifdef CONFIG_HIGHMEM, but afaict that's OK
> because CONFIG_HIGHMEM=n isn't possible on sparc32.
> 
> This patch and one other mistyped "free_highmem_page".  I got lazy and
> edited those patches in-place.
> 
Hi Andrew,
	Great thanks for fixing them!
	Gerry
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/