From: Michal Hocko <mhocko@kernel.org>
To: osalvador <osalvador@suse.com>
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@redhat.com>,
LKML <linux-kernel@vger.kernel.org>,
Pavel Tatashin <pasha.tatashin@soleen.com>
Subject: Re: [RFC PATCH 1/3] mm, memory_hotplug: try to migrate full section worth of pages
Date: Tue, 20 Nov 2018 16:00:35 +0100 [thread overview]
Message-ID: <20181120150035.GP22247@dhcp22.suse.cz> (raw)
In-Reply-To: <1542725492.6817.3.camel@suse.com>
On Tue 20-11-18 15:51:32, Oscar Salvador wrote:
> On Tue, 2018-11-20 at 14:43 +0100, Michal Hocko wrote:
> > From: Michal Hocko <mhocko@suse.com>
> >
> > do_migrate_range has been limiting the number of pages to migrate to
> > 256
> > for some reason which is not documented.
>
> When looking back at old memory-hotplug commits one feels pretty sad
> about the brevity of the changelogs.
Well, things evolve and we've become much more careful about changelogs
over time. It still gets quite a lot of time to push back on changelogs
even these days though. People still keep forgetting that "what" is not
as important as "why" because the former is usually quite easy to
understand from reading the diff. The intention behind is usually what
gets forgotten after years. I guess people realize this much more after
few excavation git blame tours.
> > Signed-off-by: Michal Hocko <mhocko@suse.com>
>
> Reviewed-by: Oscar Salvador <osalvador@suse.de>
Thanks!
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2018-11-20 15:00 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-20 13:43 [RFC PATCH 0/3] few memory offlining enhancements Michal Hocko
2018-11-20 13:43 ` Michal Hocko
2018-11-20 13:43 ` [RFC PATCH 1/3] mm, memory_hotplug: try to migrate full section worth of pages Michal Hocko
2018-11-20 13:43 ` Michal Hocko
2018-11-20 14:18 ` David Hildenbrand
2018-11-20 14:25 ` Michal Hocko
2018-11-20 14:27 ` David Hildenbrand
2018-11-20 14:33 ` Pavel Tatashin
2018-11-20 14:51 ` osalvador
2018-11-20 15:00 ` Michal Hocko [this message]
2018-11-20 13:43 ` [RFC PATCH 2/3] mm, memory_hotplug: deobfuscate migration part of offlining Michal Hocko
2018-11-20 13:43 ` Michal Hocko
2018-11-20 14:26 ` David Hildenbrand
2018-11-20 14:34 ` Michal Hocko
2018-11-20 14:34 ` David Hildenbrand
2018-11-20 15:13 ` osalvador
2018-11-20 15:18 ` Michal Hocko
2018-11-20 13:43 ` [RFC PATCH 3/3] mm, fault_around: do not take a reference to a locked page Michal Hocko
2018-11-20 13:43 ` Michal Hocko
2018-11-20 14:07 ` Kirill A. Shutemov
2018-11-20 14:12 ` Michal Hocko
2018-11-20 14:17 ` Kirill A. Shutemov
2018-11-20 14:25 ` Michal Hocko
2018-11-21 4:51 ` William Kucharski
2018-11-21 7:07 ` Michal Hocko
2018-11-20 14:33 ` David Hildenbrand
2018-11-21 1:47 ` Hugh Dickins
2018-11-21 7:11 ` Michal Hocko
2018-11-22 2:27 ` Hugh Dickins
2018-11-22 9:05 ` Michal Hocko
2018-11-23 20:22 ` Hugh Dickins
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