From: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
To: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@suse.cz>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
David Rientjes <rientjes@google.com>,
Jiang Liu <jiang.liu@huawei.com>,
Tang Chen <tangchen@cn.fujitsu.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
kosaki.motohiro@gmail.com
Subject: Re: [PATCH v2 1/4] mm/memory-hotplug: fix lowmem count overflow when offline pages
Date: Sat, 25 May 2013 21:16:24 -0400 [thread overview]
Message-ID: <51A16268.4000401@gmail.com> (raw)
In-Reply-To: <1369298568-20094-1-git-send-email-liwanp@linux.vnet.ibm.com>
> ---
> mm/page_alloc.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 98cbdf6..23b921f 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -6140,6 +6140,8 @@ __offline_isolated_pages(unsigned long start_pfn, unsigned long end_pfn)
> list_del(&page->lru);
> rmv_page_order(page);
> zone->free_area[order].nr_free--;
> + if (PageHighMem(page))
> + totalhigh_pages -= 1 << order;
> for (i = 0; i < (1 << order); i++)
> SetPageReserved((page+i));
> pfn += (1 << order);
memory hotplug don't support 32bit since it was born, at least, when the system has highmem.
Why can't we disable memory hotremove when 32bit at compile time?
next prev parent reply other threads:[~2013-05-26 1:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-23 8:42 [PATCH v2 1/4] mm/memory-hotplug: fix lowmem count overflow when offline pages Wanpeng Li
2013-05-23 8:42 ` [PATCH v2 2/4] mm/pageblock: remove get/set_pageblock_flags Wanpeng Li
2013-05-23 8:42 ` [PATCH v2 3/4] mm/hugetlb: remove hugetlb_prefault Wanpeng Li
2013-05-23 8:42 ` [PATCH v2 4/4] mm/hugetlb: use already exist interface huge_page_shift Wanpeng Li
2013-05-26 1:16 ` KOSAKI Motohiro [this message]
[not found] ` <51a1642b.077c320a.3884.161cSMTPIN_ADDED_BROKEN@mx.google.com>
2013-05-26 1:44 ` [PATCH v2 1/4] mm/memory-hotplug: fix lowmem count overflow when offline pages KOSAKI Motohiro
2013-05-26 14:29 ` Liu Jiang
2013-05-26 14:59 ` KOSAKI Motohiro
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