From: Michal Hocko <mhocko@kernel.org>
To: Wei Yang <richard.weiyang@gmail.com>
Cc: Linux-MM <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>,
Reza Arbab <arbab@linux.vnet.ibm.com>,
Yasuaki Ishimatsu <yasu.isimatu@gmail.com>,
Xishi Qiu <qiuxishi@huawei.com>,
Kani Toshimitsu <toshi.kani@hpe.com>,
slaoub@gmail.com, Joonsoo Kim <js1304@gmail.com>,
Daniel Kiper <daniel.kiper@oracle.com>,
Igor Mammedov <imammedo@redhat.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/2] mm, memory_hotplug: remove zone restrictions
Date: Fri, 30 Jun 2017 11:55:45 +0200 [thread overview]
Message-ID: <20170630095545.GF22917@dhcp22.suse.cz> (raw)
In-Reply-To: <CADZGyca1-CzaHoR-==DN4kK_YrwmMVnKvowUv-5M4GQP7ZYubg@mail.gmail.com>
On Fri 30-06-17 17:39:56, Wei Yang wrote:
> On Fri, Jun 30, 2017 at 4:39 PM, Michal Hocko <mhocko@kernel.org> wrote:
[...]
> > yes and to be honest I do not plan to fix it unless somebody has a real
> > life usecase for it. Now that we allow explicit onlininig type anywhere
> > it seems like a reasonable behavior and this will allow us to remove
> > quite some code which is always a good deal wrt longterm maintenance.
> >
>
> hmm... the statistics displayed in /proc/zoneinfo would be meaningless
> for zone_normal and zone_movable.
Why would they be meaningless? Counters will always reflect the actual
use - if not then it is a bug. And wrt to zone description what is
meaningless about
memory34/valid_zones:Normal
memory35/valid_zones:Normal Movable
memory36/valid_zones:Movable
memory37/valid_zones:Movable Normal
memory38/valid_zones:Movable Normal
memory39/valid_zones:Movable Normal
memory40/valid_zones:Normal
memory41/valid_zones:Movable
And
Node 1, zone Normal
pages free 65465
min 156
low 221
high 286
spanned 229376
present 65536
managed 65536
[...]
start_pfn: 1114112
Node 1, zone Movable
pages free 65443
min 156
low 221
high 286
spanned 196608
present 65536
managed 65536
[...]
start_pfn: 1179648
ranges are clearly defined as [start_pfn, start_pfn+managed] and managed
matches the number of onlined pages (256MB).
--
Michal Hocko
SUSE Labs
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2017-06-30 9:55 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-29 7:35 [RFC PATCH 0/2] mm, memory_hotplug: remove zone onlining restriction Michal Hocko
2017-06-29 7:35 ` [PATCH 1/2] mm, memory_hotplug: display allowed zones in the preferred ordering Michal Hocko
2017-06-30 0:45 ` Joonsoo Kim
2017-07-07 14:34 ` Vlastimil Babka
2017-06-29 7:35 ` [PATCH 2/2] mm, memory_hotplug: remove zone restrictions Michal Hocko
2017-06-30 1:16 ` Joonsoo Kim
2017-06-30 3:09 ` Wei Yang
2017-06-30 8:39 ` Michal Hocko
2017-06-30 9:39 ` Wei Yang
2017-06-30 9:55 ` Michal Hocko [this message]
2017-06-30 11:01 ` Michal Hocko
2017-07-05 23:16 ` Wei Yang
2017-07-06 6:56 ` Michal Hocko
2017-07-07 8:37 ` Wei Yang
2017-07-07 12:41 ` Michal Hocko
2017-07-07 15:02 ` Vlastimil Babka
2017-07-10 6:45 ` Michal Hocko
2017-07-10 11:11 ` Vlastimil Babka
2017-07-10 11:17 ` Michal Hocko
2017-07-10 12:12 ` Vlastimil Babka
2017-07-10 12:30 ` Michal Hocko
2017-07-12 12:49 ` Michal Hocko
2017-07-14 12:12 [PATCH 0/2] mm, memory_hotplug: remove zone onlining restriction Michal Hocko
2017-07-14 12:12 ` [PATCH 2/2] mm, memory_hotplug: remove zone restrictions Michal Hocko
2017-07-14 12:17 ` Vlastimil Babka
2017-07-14 14:26 ` Reza Arbab
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170630095545.GF22917@dhcp22.suse.cz \
--to=mhocko@kernel.org \
--cc=aarcange@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=arbab@linux.vnet.ibm.com \
--cc=daniel.kiper@oracle.com \
--cc=imammedo@redhat.com \
--cc=js1304@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mgorman@suse.de \
--cc=qiuxishi@huawei.com \
--cc=richard.weiyang@gmail.com \
--cc=slaoub@gmail.com \
--cc=toshi.kani@hpe.com \
--cc=vbabka@suse.cz \
--cc=vkuznets@redhat.com \
--cc=yasu.isimatu@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).