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Message-ID: <1542725492.6817.3.camel@suse.com>
Subject: Re: [RFC PATCH 1/3] mm, memory_hotplug: try to migrate full section
 worth of pages
From: osalvador <osalvador@suse.com>
Date: Tue, 20 Nov 2018 15:51:32 +0100
In-Reply-To: <20181120134323.13007-2-mhocko@kernel.org>
References: <20181120134323.13007-1-mhocko@kernel.org>
	 <20181120134323.13007-2-mhocko@kernel.org>
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Sender: owner-linux-mm@kvack.org
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To: Michal Hocko <mhocko@kernel.org>, linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>, Pavel Tatashin <pasha.tatashin@oracle.com>, David Hildenbrand <david@redhat.com>, LKML <linux-kernel@vger.kernel.org>, Michal Hocko <mhocko@suse.com>

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.

> Signed-off-by: Michal Hocko <mhocko@suse.com>

Reviewed-by: Oscar Salvador <osalvador@suse.de>