From: "Hillf Danton" <hillf.zj@alibaba-inc.com>
To: "'Michal Hocko'" <mhocko@kernel.org>, <linux-mm@kvack.org>
Cc: "'Andrew Morton'" <akpm@linux-foundation.org>,
"'Mel Gorman'" <mgorman@suse.de>,
"'Vlastimil Babka'" <vbabka@suse.cz>,
"'Andrea Arcangeli'" <aarcange@redhat.com>,
"'Reza Arbab'" <arbab@linux.vnet.ibm.com>,
"'Yasuaki Ishimatsu'" <yasu.isimatu@gmail.com>,
"'Tang Chen'" <tangchen@cn.fujitsu.com>, <qiuxishi@huawei.com>,
"'Kani Toshimitsu'" <toshi.kani@hpe.com>, <slaoub@gmail.com>,
"'Joonsoo Kim'" <js1304@gmail.com>,
"'Andi Kleen'" <ak@linux.intel.com>,
"'David Rientjes'" <rientjes@google.com>,
"'Daniel Kiper'" <daniel.kiper@oracle.com>,
"'Igor Mammedov'" <imammedo@redhat.com>,
"'Vitaly Kuznetsov'" <vkuznets@redhat.com>,
"'LKML'" <linux-kernel@vger.kernel.org>,
"'Michal Hocko'" <mhocko@suse.com>,
"'Dan Williams'" <dan.j.williams@gmail.com>,
"'Heiko Carstens'" <heiko.carstens@de.ibm.com>,
"'Lai Jiangshan'" <laijs@cn.fujitsu.com>,
"'Martin Schwidefsky'" <schwidefsky@de.ibm.com>
Subject: Re: [PATCH 5/6] mm, memory_hotplug: do not associate hotadded memory to zones until online
Date: Fri, 31 Mar 2017 14:18:08 +0800 [thread overview]
Message-ID: <04c901d2a9e6$91968a20$b4c39e60$@alibaba-inc.com> (raw)
In-Reply-To: <20170330115454.32154-6-mhocko@kernel.org>
On March 30, 2017 7:55 PM Michal Hocko wrote:
>
> +static void __meminit resize_zone_range(struct zone *zone, unsigned long start_pfn,
> + unsigned long nr_pages)
> +{
> + unsigned long old_end_pfn = zone_end_pfn(zone);
> +
> + if (start_pfn < zone->zone_start_pfn)
> + zone->zone_start_pfn = start_pfn;
> +
> + zone->spanned_pages = max(start_pfn + nr_pages, old_end_pfn) - zone->zone_start_pfn;
> +}
The implementation above implies zone can only go bigger.
Can we resize zone with the given data?
btw, this mail address, Zhang Zhen <zhenzhang.zhang@huawei.com> , is not reachable.
Hillf
WARNING: multiple messages have this Message-ID (diff)
From: "Hillf Danton" <hillf.zj@alibaba-inc.com>
To: 'Michal Hocko' <mhocko@kernel.org>, linux-mm@kvack.org
Cc: 'Andrew Morton' <akpm@linux-foundation.org>,
'Mel Gorman' <mgorman@suse.de>,
'Vlastimil Babka' <vbabka@suse.cz>,
'Andrea Arcangeli' <aarcange@redhat.com>,
'Reza Arbab' <arbab@linux.vnet.ibm.com>,
'Yasuaki Ishimatsu' <yasu.isimatu@gmail.com>,
'Tang Chen' <tangchen@cn.fujitsu.com>,
qiuxishi@huawei.com, 'Kani Toshimitsu' <toshi.kani@hpe.com>,
slaoub@gmail.com, 'Joonsoo Kim' <js1304@gmail.com>,
'Andi Kleen' <ak@linux.intel.com>,
'David Rientjes' <rientjes@google.com>,
'Daniel Kiper' <daniel.kiper@oracle.com>,
'Igor Mammedov' <imammedo@redhat.com>,
'Vitaly Kuznetsov' <vkuznets@redhat.com>,
'LKML' <linux-kernel@vger.kernel.org>,
'Michal Hocko' <mhocko@suse.com>,
'Dan Williams' <dan.j.williams@gmail.com>,
'Heiko Carstens' <heiko.carstens@de.ibm.com>,
'Lai Jiangshan' <laijs@cn.fujitsu.com>,
'Martin Schwidefsky' <schwidefsky@de.ibm.com>
Subject: Re: [PATCH 5/6] mm, memory_hotplug: do not associate hotadded memory to zones until online
Date: Fri, 31 Mar 2017 14:18:08 +0800 [thread overview]
Message-ID: <04c901d2a9e6$91968a20$b4c39e60$@alibaba-inc.com> (raw)
In-Reply-To: <20170330115454.32154-6-mhocko@kernel.org>
On March 30, 2017 7:55 PM Michal Hocko wrote:
>
> +static void __meminit resize_zone_range(struct zone *zone, unsigned long start_pfn,
> + unsigned long nr_pages)
> +{
> + unsigned long old_end_pfn = zone_end_pfn(zone);
> +
> + if (start_pfn < zone->zone_start_pfn)
> + zone->zone_start_pfn = start_pfn;
> +
> + zone->spanned_pages = max(start_pfn + nr_pages, old_end_pfn) - zone->zone_start_pfn;
> +}
The implementation above implies zone can only go bigger.
Can we resize zone with the given data?
btw, this mail address, Zhang Zhen <zhenzhang.zhang@huawei.com> , is not reachable.
Hillf
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next prev parent reply other threads:[~2017-03-31 6:18 UTC|newest]
Thread overview: 140+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-30 11:54 [PATCH 0/6] mm: make movable onlining suck less Michal Hocko
2017-03-30 11:54 ` Michal Hocko
2017-03-30 11:54 ` [PATCH 1/6] mm: get rid of zone_is_initialized Michal Hocko
2017-03-30 11:54 ` Michal Hocko
2017-03-31 3:39 ` Hillf Danton
2017-03-31 3:39 ` Hillf Danton
2017-03-31 6:43 ` Michal Hocko
2017-03-31 6:43 ` Michal Hocko
2017-03-31 6:48 ` Michal Hocko
2017-03-31 6:48 ` Michal Hocko
2017-03-31 7:39 ` [PATCH v1 " Michal Hocko
2017-03-31 7:39 ` Michal Hocko
2017-04-05 8:14 ` Michal Hocko
2017-04-05 8:14 ` Michal Hocko
2017-04-05 9:06 ` Igor Mammedov
2017-04-05 9:06 ` Igor Mammedov
2017-04-05 9:23 ` Michal Hocko
2017-04-05 9:23 ` Michal Hocko
2017-03-30 11:54 ` [PATCH 2/6] mm, tile: drop arch_{add,remove}_memory Michal Hocko
2017-03-30 11:54 ` Michal Hocko
2017-03-30 15:41 ` Chris Metcalf
2017-03-30 15:41 ` Chris Metcalf
2017-03-30 11:54 ` [PATCH 3/6] mm: remove return value from init_currently_empty_zone Michal Hocko
2017-03-30 11:54 ` Michal Hocko
2017-03-31 3:49 ` Hillf Danton
2017-03-31 3:49 ` Hillf Danton
2017-03-31 6:49 ` Michal Hocko
2017-03-31 6:49 ` Michal Hocko
2017-03-31 7:06 ` Hillf Danton
2017-03-31 7:06 ` Hillf Danton
2017-03-31 7:18 ` Michal Hocko
2017-03-31 7:18 ` Michal Hocko
2017-03-31 7:43 ` Michal Hocko
2017-03-31 7:43 ` Michal Hocko
2017-04-03 21:22 ` Reza Arbab
2017-04-03 21:22 ` Reza Arbab
2017-04-04 7:30 ` Michal Hocko
2017-04-04 7:30 ` Michal Hocko
2017-03-30 11:54 ` [PATCH 4/6] mm, memory_hotplug: use node instead of zone in can_online_high_movable Michal Hocko
2017-03-30 11:54 ` Michal Hocko
2017-03-30 11:54 ` [PATCH 5/6] mm, memory_hotplug: do not associate hotadded memory to zones until online Michal Hocko
2017-03-30 11:54 ` Michal Hocko
2017-03-31 6:18 ` Hillf Danton [this message]
2017-03-31 6:18 ` Hillf Danton
2017-03-31 6:50 ` Michal Hocko
2017-03-31 6:50 ` Michal Hocko
2017-04-04 12:21 ` Tobias Regnery
2017-04-04 12:21 ` Tobias Regnery
2017-04-04 12:45 ` Michal Hocko
2017-04-04 12:45 ` Michal Hocko
2017-04-06 8:14 ` Michal Hocko
2017-04-06 8:14 ` Michal Hocko
2017-04-06 12:46 ` Michal Hocko
2017-04-06 12:46 ` Michal Hocko
2017-03-30 11:54 ` [PATCH 6/6] mm, memory_hotplug: remove unused cruft after memory hotplug rework Michal Hocko
2017-03-30 11:54 ` Michal Hocko
2017-03-31 7:46 ` Michal Hocko
2017-03-31 7:46 ` Michal Hocko
2017-03-31 19:19 ` [PATCH 0/6] mm: make movable onlining suck less Heiko Carstens
2017-03-31 19:19 ` Heiko Carstens
2017-04-03 7:34 ` Michal Hocko
2017-04-03 7:34 ` Michal Hocko
2017-04-03 11:55 ` Michal Hocko
2017-04-03 11:55 ` Michal Hocko
2017-04-03 12:20 ` Igor Mammedov
2017-04-03 12:20 ` Igor Mammedov
2017-04-03 19:58 ` Reza Arbab
2017-04-03 19:58 ` Reza Arbab
2017-04-03 20:23 ` Michal Hocko
2017-04-03 20:23 ` Michal Hocko
2017-04-03 20:42 ` Reza Arbab
2017-04-03 20:42 ` Reza Arbab
2017-04-04 7:23 ` Michal Hocko
2017-04-04 7:23 ` Michal Hocko
2017-04-04 7:34 ` Michal Hocko
2017-04-04 7:34 ` Michal Hocko
2017-04-04 8:23 ` Michal Hocko
2017-04-04 8:23 ` Michal Hocko
2017-04-04 15:59 ` Reza Arbab
2017-04-04 15:59 ` Reza Arbab
2017-04-04 16:02 ` Reza Arbab
2017-04-04 16:02 ` Reza Arbab
2017-04-04 16:44 ` Michal Hocko
2017-04-04 16:44 ` Michal Hocko
2017-04-04 18:30 ` Reza Arbab
2017-04-04 18:30 ` Reza Arbab
2017-04-04 19:41 ` Michal Hocko
2017-04-04 19:41 ` Michal Hocko
2017-04-04 21:43 ` Reza Arbab
2017-04-04 21:43 ` Reza Arbab
2017-04-05 6:42 ` Michal Hocko
2017-04-05 6:42 ` Michal Hocko
2017-04-05 9:24 ` Michal Hocko
2017-04-05 9:24 ` Michal Hocko
2017-04-05 14:53 ` Reza Arbab
2017-04-05 14:53 ` Reza Arbab
2017-04-05 15:42 ` Michal Hocko
2017-04-05 15:42 ` Michal Hocko
2017-04-05 17:32 ` Reza Arbab
2017-04-05 17:32 ` Reza Arbab
2017-04-05 18:15 ` Michal Hocko
2017-04-05 18:15 ` Michal Hocko
2017-04-05 19:39 ` Michal Hocko
2017-04-05 19:39 ` Michal Hocko
2017-04-05 21:02 ` Michal Hocko
2017-04-05 21:02 ` Michal Hocko
2017-04-06 11:07 ` Michal Hocko
2017-04-06 11:07 ` Michal Hocko
2017-04-05 15:48 ` Reza Arbab
2017-04-05 15:48 ` Reza Arbab
2017-04-05 16:34 ` Michal Hocko
2017-04-05 16:34 ` Michal Hocko
2017-04-05 20:55 ` Reza Arbab
2017-04-05 20:55 ` Reza Arbab
2017-04-06 9:25 ` Michal Hocko
2017-04-06 9:25 ` Michal Hocko
2017-04-05 13:52 ` Michal Hocko
2017-04-05 13:52 ` Michal Hocko
2017-04-05 15:23 ` Reza Arbab
2017-04-05 15:23 ` Reza Arbab
2017-04-05 6:36 ` Michal Hocko
2017-04-05 6:36 ` Michal Hocko
2017-04-06 13:08 ` Michal Hocko
2017-04-06 13:08 ` Michal Hocko
2017-04-06 15:24 ` Reza Arbab
2017-04-06 15:24 ` Reza Arbab
2017-04-06 15:41 ` Michal Hocko
2017-04-06 15:41 ` Michal Hocko
2017-04-06 15:46 ` Reza Arbab
2017-04-06 15:46 ` Reza Arbab
2017-04-06 16:21 ` Michal Hocko
2017-04-06 16:21 ` Michal Hocko
2017-04-06 16:24 ` Mel Gorman
2017-04-06 16:24 ` Mel Gorman
2017-04-06 16:55 ` Mel Gorman
2017-04-06 16:55 ` Mel Gorman
2017-04-06 17:12 ` Michal Hocko
2017-04-06 17:12 ` Michal Hocko
2017-04-06 17:46 ` Mel Gorman
2017-04-06 17:46 ` Mel Gorman
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