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From: David Hildenbrand <david@redhat.com>
To: Michal Hocko <mhocko@suse.com>,
	Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Wei Yang <richard.weiyang@linux.alibaba.com>,
	Baoquan He <bhe@redhat.com>,
	Pankaj Gupta <pankaj.gupta.linux@gmail.com>,
	Oscar Salvador <osalvador@suse.de>
Subject: Re: [PATCH v2 03/10] mm/memory_hotplug: simplify page offlining
Date: Tue, 8 Sep 2020 11:10:40 +0200	[thread overview]
Message-ID: <b61869c0-bb1b-dd4d-bcc5-afe509a0cfc3@redhat.com> (raw)
In-Reply-To: <20200907064556.GB30144@dhcp22.suse.cz>

On 07.09.20 08:45, Michal Hocko wrote:
> On Fri 04-09-20 12:21:34, Andrew Morton wrote:
>> On Fri, 4 Sep 2020 07:47:45 +0200 David Hildenbrand <david@redhat.com> wrote:
> [...]
>> @@ -1589,9 +1567,7 @@ int __ref offline_pages(unsigned long st
>>  			reason = "failure to dissolve huge pages";
>>  			goto failed_removal_isolated;
>>  		}
>> -		/* check again */
>> -		ret = walk_system_ram_range(start_pfn, end_pfn - start_pfn,
>> -					    NULL, check_pages_isolated_cb);
>> +
>>  		/*
>>  		 * per-cpu pages are drained in start_isolate_page_range, but if
>>  		 * there are still pages that are not free, make sure that we
>> @@ -1604,15 +1580,15 @@ int __ref offline_pages(unsigned long st
>>  		 * because has_unmovable_pages explicitly checks for
>>  		 * PageBuddy on freed pages on other zones.
>>  		 */
>> +		ret = test_pages_isolated(start_pfn, end_pfn, MEMORY_OFFLINE);
>>  		if (ret)
>>  			drain_all_pages(zone);
>>  	} while (ret);
> 
> Looks ok
> 

Agreed, thanks Michal and Andrew.

-- 
Thanks,

David / dhildenb


  reply	other threads:[~2020-09-08  9:10 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-19 17:59 [PATCH v2 00/10] mm/memory_hotplug: online_pages()/offline_pages() cleanups David Hildenbrand
2020-08-19 17:59 ` [PATCH v2 01/10] mm/memory_hotplug: inline __offline_pages() into offline_pages() David Hildenbrand
2020-08-24 10:26   ` Oscar Salvador
2020-08-31 10:05   ` Pankaj Gupta
2020-08-19 17:59 ` [PATCH v2 02/10] mm/memory_hotplug: enforce section granularity when onlining/offlining David Hildenbrand
2020-08-24 10:39   ` Oscar Salvador
2020-08-25  2:11     ` Wei Yang
2020-09-08  9:14       ` David Hildenbrand
2020-08-19 17:59 ` [PATCH v2 03/10] mm/memory_hotplug: simplify page offlining David Hildenbrand
2020-08-24 10:44   ` Oscar Salvador
2020-09-03 21:58   ` Andrew Morton
2020-09-04  5:47     ` David Hildenbrand
2020-09-04  7:46       ` Michal Hocko
2020-09-04 19:21       ` Andrew Morton
2020-09-07  6:45         ` Michal Hocko
2020-09-08  9:10           ` David Hildenbrand [this message]
2020-08-19 17:59 ` [PATCH v2 04/10] mm/page_alloc: simplify __offline_isolated_pages() David Hildenbrand
2020-08-24 10:48   ` Oscar Salvador
2020-08-19 17:59 ` [PATCH v2 05/10] mm/memory_hotplug: drop nr_isolate_pageblock in offline_pages() David Hildenbrand
2020-08-24 10:49   ` Oscar Salvador
2020-08-19 17:59 ` [PATCH v2 06/10] mm/page_isolation: simplify return value of start_isolate_page_range() David Hildenbrand
2020-08-24 10:51   ` Oscar Salvador
2020-08-19 17:59 ` [PATCH v2 07/10] mm/memory_hotplug: simplify page onlining David Hildenbrand
2020-08-24 10:55   ` Oscar Salvador
2020-08-19 17:59 ` [PATCH v2 08/10] mm/page_alloc: drop stale pageblock comment in memmap_init_zone*() David Hildenbrand
2020-08-24 10:58   ` Oscar Salvador
2020-08-19 17:59 ` [PATCH v2 09/10] mm: pass migratetype into memmap_init_zone() and move_pfn_range_to_zone() David Hildenbrand
2020-08-24 11:59   ` Oscar Salvador
2020-08-19 17:59 ` [PATCH v2 10/10] mm/memory_hotplug: mark pageblocks MIGRATE_ISOLATE while onlining memory David Hildenbrand
2020-08-24 12:07   ` Oscar Salvador

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