linux-kernel - Re: [PATCH v1 3/3] mm/memory_hotplug: skip adjust_managed_page_count() for PageOffline() pages when offlining

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Date: Mon, 10 Jun 2024 06:29:13 +0200
From: Oscar Salvador <osalvador@...e.de>
To: David Hildenbrand <david@...hat.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-hyperv@...r.kernel.org, virtualization@...ts.linux.dev,
	xen-devel@...ts.xenproject.org, kasan-dev@...glegroups.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mike Rapoport <rppt@...nel.org>,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Jason Wang <jasowang@...hat.com>,
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
	Eugenio Pérez <eperezma@...hat.com>,
	Juergen Gross <jgross@...e.com>,
	Stefano Stabellini <sstabellini@...nel.org>,
	Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>,
	Alexander Potapenko <glider@...gle.com>,
	Marco Elver <elver@...gle.com>, Dmitry Vyukov <dvyukov@...gle.com>
Subject: Re: [PATCH v1 3/3] mm/memory_hotplug: skip
 adjust_managed_page_count() for PageOffline() pages when offlining

On Fri, Jun 07, 2024 at 11:09:38AM +0200, David Hildenbrand wrote:
> We currently have a hack for virtio-mem in place to handle memory
> offlining with PageOffline pages for which we already adjusted the
> managed page count.
> 
> Let's enlighten memory offlining code so we can get rid of that hack,
> and document the situation.
> 
> Signed-off-by: David Hildenbrand <david@...hat.com>

Acked-by: Oscar Salvador <osalvador@...e.de>

-- 
Oscar Salvador
SUSE Labs