From: Andrew Morton <akpm@linux-foundation.org>
To: Reza Arbab <arbab@linux.vnet.ibm.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Daniel Kiper <daniel.kiper@oracle.com>,
Dan Williams <dan.j.williams@intel.com>,
Vlastimil Babka <vbabka@suse.cz>,
Tang Chen <tangchen@cn.fujitsu.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
David Vrabel <david.vrabel@citrix.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
David Rientjes <rientjes@google.com>,
Andrew Banman <abanman@sgi.com>, Chen Yucong <slaoub@gmail.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Yasunori Goto <y-goto@jp.fujitsu.com>,
Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>,
Zhang Zhen <zhenzhang.zhang@huawei.com>,
Shaohua Li <shaohua.li@intel.com>
Subject: Re: [PATCH 0/3] memory-hotplug: improve rezoning capability
Date: Mon, 9 May 2016 13:11:58 -0700 [thread overview]
Message-ID: <20160509131158.d5429d4dba4a24c5b1aac9ca@linux-foundation.org> (raw)
In-Reply-To: <1462816419-4479-1-git-send-email-arbab@linux.vnet.ibm.com>
On Mon, 9 May 2016 12:53:36 -0500 Reza Arbab <arbab@linux.vnet.ibm.com> wrote:
> While it is currently possible to rezone memory when it is onlined, there are
> implicit assumptions about the zones:
>
> * To "online_kernel" a block into ZONE_NORMAL, it must currently
> be in ZONE_MOVABLE.
>
> * To "online_movable" a block into ZONE_MOVABLE, it must currently
> be in (ZONE_MOVABLE - 1).
>
> So on powerpc, where new memory is hotplugged into ZONE_DMA, these operations
> do not work.
>
> This patchset replaces the qualifications above with a more general
> validation of zone movement.
>
The patches look good from a first scan. It's late for 4.6 so I'll
queue them for 4.7-rc1, unless there are convincing reasons otherwise?
Hopefully the other memory-hotplug developers will be able to find time
to review these.
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next prev parent reply other threads:[~2016-05-09 20:12 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-09 17:53 [PATCH 0/3] memory-hotplug: improve rezoning capability Reza Arbab
2016-05-09 17:53 ` [PATCH 1/3] memory-hotplug: add move_pfn_range() Reza Arbab
2016-05-10 16:47 ` Yasuaki Ishimatsu
2016-05-09 17:53 ` [PATCH 2/3] memory-hotplug: more general validation of zone during online Reza Arbab
2016-05-10 18:08 ` Yasuaki Ishimatsu
2016-05-10 20:39 ` Reza Arbab
2016-05-11 15:17 ` Yasuaki Ishimatsu
2016-05-11 19:23 ` Reza Arbab
2016-05-13 17:24 ` Yasuaki Ishimatsu
2016-05-13 17:26 ` Yasuaki Ishimatsu
2016-05-09 17:53 ` [PATCH 3/3] memory-hotplug: use zone_can_shift() for sysfs valid_zones attribute Reza Arbab
2016-05-13 17:38 ` Yasuaki Ishimatsu
2016-05-09 20:11 ` Andrew Morton [this message]
2016-05-09 20:13 ` [PATCH 0/3] memory-hotplug: improve rezoning capability Andrew Morton
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