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From: Igor Mammedov <imammedo@redhat.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
	Mel Gorman <mgorman@suse.de>, Vlastimil Babka <vbabka@suse.cz>,
	Andrea Arcangeli <aarcange@redhat.com>,
	Jerome Glisse <jglisse@redhat.com>,
	Reza Arbab <arbab@linux.vnet.ibm.com>,
	Yasuaki Ishimatsu <yasu.isimatu@gmail.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>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	LKML <linux-kernel@vger.kernel.org>,
	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>,
	Tobias Regnery <tobias.regnery@gmail.com>
Subject: Re: [PATCH -v2 0/9] mm: make movable onlining suck less
Date: Tue, 11 Apr 2017 11:53:22 +0200	[thread overview]
Message-ID: <20170411115322.669c435d@nial.brq.redhat.com> (raw)
In-Reply-To: <20170411084142.GB6729@dhcp22.suse.cz>

On Tue, 11 Apr 2017 10:41:42 +0200
Michal Hocko <mhocko@kernel.org> wrote:

> On Tue 11-04-17 10:01:52, Igor Mammedov wrote:
> > On Mon, 10 Apr 2017 16:56:39 +0200
> > Michal Hocko <mhocko@kernel.org> wrote:  
> [...]
> > > > #echo online_kernel > memory32/state
> > > > write error: Invalid argument
> > > > // that's not what's expected    
> > > 
> > > this is proper behavior with the current implementation. Does anything
> > > depend on the zone reusing?  
> > if we didn't have zone imbalance issue in design,
> > the it wouldn't matter but as it stands it's not
> > minore issue.
> > 
> > Consider following,
> > one hotplugs some memory and onlines it as movable,
> > then one needs to hotplug some more but to do so 
> > one one needs more memory from zone NORMAL and to keep
> > zone balance some memory in MOVABLE should be reonlined
> > as NORMAL  
> 
> Is this something that we absolutely have to have right _now_? Or are you
> OK if I address this in follow up series? Because it will make the
> current code slightly more complex and to be honest I would rather like
> to see this "core" merge and build more on top.
It's fine by me to do it on top.

  reply	other threads:[~2017-04-11  9:53 UTC|newest]

Thread overview: 84+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-10 11:03 [PATCH -v2 0/9] mm: make movable onlining suck less Michal Hocko
2017-04-10 11:03 ` [PATCH 1/9] mm: remove return value from init_currently_empty_zone Michal Hocko
2017-04-11  8:10   ` Balbir Singh
2017-04-13 12:03   ` Vlastimil Babka
2017-04-13 19:43   ` YASUAKI ISHIMATSU
2017-04-10 11:03 ` [PATCH 2/9] mm, memory_hotplug: use node instead of zone in can_online_high_movable Michal Hocko
2017-04-13 12:46   ` Vlastimil Babka
2017-04-13 19:45   ` YASUAKI ISHIMATSU
2017-04-10 11:03 ` [PATCH 3/9] mm: drop page_initialized check from get_nid_for_pfn Michal Hocko
2017-04-13 12:59   ` Vlastimil Babka
2017-04-10 11:03 ` [PATCH 4/9] mm, memory_hotplug: get rid of is_zone_device_section Michal Hocko
2017-04-10 16:20   ` Jerome Glisse
2017-04-10 16:31     ` Michal Hocko
2017-04-13 13:05   ` Vlastimil Babka
2017-04-17 20:12   ` Jerome Glisse
2017-04-18  7:19     ` Michal Hocko
2017-04-10 11:03 ` [PATCH 5/9] mm, memory_hotplug: split up register_one_node Michal Hocko
2017-04-13 14:05   ` Vlastimil Babka
2017-04-13 14:13     ` Michal Hocko
2017-04-10 11:03 ` [PATCH 6/9] mm, memory_hotplug: do not associate hotadded memory to zones until online Michal Hocko
2017-04-10 16:25   ` [PATCH v3 " Michal Hocko
2017-04-20  8:25     ` Vlastimil Babka
2017-04-20  9:06       ` Michal Hocko
2017-04-20 10:51         ` Vlastimil Babka
2017-04-10 11:03 ` [PATCH 7/9] mm, memory_hotplug: replace for_device by want_memblock in arch_add_memory Michal Hocko
2017-04-20  8:29   ` Vlastimil Babka
2017-04-10 11:03 ` [PATCH 8/9] mm, memory_hotplug: fix the section mismatch warning Michal Hocko
2017-04-10 11:03 ` [PATCH 9/9] mm, memory_hotplug: remove unused cruft after memory hotplug rework Michal Hocko
2017-04-20  8:38   ` Vlastimil Babka
2017-04-10 14:27 ` [PATCH -v2 0/9] mm: make movable onlining suck less Igor Mammedov
2017-04-10 14:56   ` Michal Hocko
2017-04-10 15:22     ` Michal Hocko
2017-04-10 15:31       ` Michal Hocko
2017-04-11  8:01     ` Igor Mammedov
2017-04-11  8:41       ` Michal Hocko
2017-04-11  9:53         ` Igor Mammedov [this message]
2017-04-11 10:47           ` Michal Hocko
2017-04-10 16:02   ` Michal Hocko
2017-04-18  8:23     ` Vlastimil Babka
2017-04-10 16:09   ` Michal Hocko
2017-04-11  6:38     ` Igor Mammedov
2017-04-11  9:23       ` Michal Hocko
2017-04-11  9:59         ` Igor Mammedov
2017-04-11 11:01           ` Michal Hocko
2017-04-11 11:38             ` Michal Hocko
2017-04-11 12:38               ` Michal Hocko
2017-04-10 15:43 ` Reza Arbab
2017-04-11  8:59   ` Michal Hocko
2017-04-10 16:35 ` Jerome Glisse
2017-04-10 17:53   ` Michal Hocko
2017-04-11  2:51   ` Balbir Singh
2017-04-11 17:03 ` Michal Hocko
2017-04-17 21:51   ` Dan Williams
2017-04-18  7:14     ` Michal Hocko
2017-04-18 16:42       ` Dan Williams
2017-04-18 19:54         ` Michal Hocko
2017-04-20  3:37           ` Dan Williams
2017-04-15 12:17 ` Michal Hocko
2017-04-15 12:17   ` [PATCH 1/3] mm: consider zone which is not fully populated to have holes Michal Hocko
2017-04-18  8:45     ` Vlastimil Babka
2017-04-18  9:27       ` Michal Hocko
2017-04-19 11:59         ` Vlastimil Babka
2017-04-19 12:16           ` Michal Hocko
2017-04-19 12:34             ` Vlastimil Babka
2017-04-19 12:50               ` Michal Hocko
2017-04-15 12:17   ` [PATCH 2/3] mm, compaction: skip over holes in __reset_isolation_suitable Michal Hocko
2017-04-15 12:17   ` [PATCH 3/3] mm: __first_valid_page skip over offline pages Michal Hocko
2017-04-17  5:47   ` your mail Joonsoo Kim
2017-04-17  8:15     ` Michal Hocko
2017-04-20  1:27       ` Joonsoo Kim
2017-04-20  7:28         ` Michal Hocko
2017-04-20  8:49           ` Michal Hocko
2017-04-20 11:56             ` Vlastimil Babka
2017-04-20 12:13               ` Michal Hocko
2017-04-21  2:46             ` [lkp-robot] 73821bb516: WARNING:at_mm/memblock.c:#memblock_virt_alloc_internal kernel test robot
2017-04-21  8:05               ` Michal Hocko
2017-04-21  4:38           ` your mail Joonsoo Kim
2017-04-21  7:16             ` Michal Hocko
2017-04-24  1:44               ` Joonsoo Kim
2017-04-24  7:53                 ` Michal Hocko
2017-04-25  2:50                   ` Joonsoo Kim
2017-04-26  9:19                     ` Michal Hocko
2017-04-27  2:08                       ` Joonsoo Kim
2017-04-27 15:10                         ` Michal Hocko

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