From: David Hildenbrand <david@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org, linux-mm@kvack.org,
Andrew Morton <akpm@linux-foundation.org>,
Jason Wang <jasowang@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
Michal Hocko <mhocko@suse.com>
Subject: Re: [PATCH v1 0/6] mm / virtio-mem: support ZONE_MOVABLE
Date: Tue, 21 Jul 2020 11:59:08 +0200 [thread overview]
Message-ID: <cbf39311-6992-84ee-725a-5c738f6afb9e@redhat.com> (raw)
In-Reply-To: <20200630142639.22770-1-david@redhat.com>
On 30.06.20 16:26, David Hildenbrand wrote:
> Currently, virtio-mem does not really support ZONE_MOVABLE. While it allows
> to online fully plugged memory blocks to ZONE_MOVABLE, it does not allow
> to online partially-plugged memory blocks to ZONE_MOVABLE and will never
> consider such memory blocks when unplugging memory. This might be
> surprising for users (especially, if onlining suddenly fails).
>
> Let's support partially plugged memory blocks in ZONE_MOVABLE, allowing
> partially plugged memory blocks to be online to ZONE_MOVABLE and also
> unplugging from such memory blocks.
>
> This is especially helpful for testing, but also paves the way for
> virtio-mem optimizations, allowing more memory to get reliably unplugged.
>
> Cleanup has_unmovable_pages() and set_migratetype_isolate(), providing
> better documentation of how ZONE_MOVABLE interacts with different kind of
> unmovable pages (memory offlining vs. alloc_contig_range()).
>
> David Hildenbrand (6):
> mm/page_alloc: tweak comments in has_unmovable_pages()
> mm/page_isolation: don't dump_page(NULL) in set_migratetype_isolate()
> mm/page_isolation: drop WARN_ON_ONCE() in set_migratetype_isolate()
> mm/page_isolation: cleanup set_migratetype_isolate()
> mm/page_alloc: restrict ZONE_MOVABLE optimization in
> has_unmovable_pages() to memory offlining
> virtio-mem: don't special-case ZONE_MOVABLE
>
> drivers/virtio/virtio_mem.c | 47 +++++++------------------------------
> mm/page_alloc.c | 29 +++++++++--------------
> mm/page_isolation.c | 40 ++++++++++++++-----------------
> 3 files changed, 36 insertions(+), 80 deletions(-)
>
Gentle ping, patch #1-#5 should be easy to review.
--
Thanks,
David / dhildenb
prev parent reply other threads:[~2020-07-22 23:27 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-30 14:26 [PATCH v1 0/6] mm / virtio-mem: support ZONE_MOVABLE David Hildenbrand
2020-06-30 14:26 ` [PATCH v1 1/6] mm/page_alloc: tweak comments in has_unmovable_pages() David Hildenbrand
2020-07-28 13:48 ` Baoquan He
2020-07-28 14:07 ` David Hildenbrand
2020-07-29 10:47 ` Baoquan He
2020-07-29 12:29 ` David Hildenbrand
2020-06-30 14:26 ` [PATCH v1 2/6] mm/page_isolation: don't dump_page(NULL) in set_migratetype_isolate() David Hildenbrand
2020-07-28 13:56 ` Baoquan He
2020-07-29 17:31 ` Mike Kravetz
2020-07-29 18:08 ` David Hildenbrand
2020-07-29 18:35 ` Mike Kravetz
2020-07-29 18:41 ` David Hildenbrand
2020-07-30 4:21 ` Pankaj Gupta
2020-06-30 14:26 ` [PATCH v1 3/6] mm/page_isolation: drop WARN_ON_ONCE() " David Hildenbrand
2020-07-29 13:24 ` Baoquan He
2020-07-29 13:37 ` David Hildenbrand
2020-07-29 14:05 ` Baoquan He
2020-06-30 14:26 ` [PATCH v1 4/6] mm/page_isolation: cleanup set_migratetype_isolate() David Hildenbrand
2020-07-29 14:06 ` Baoquan He
2020-07-30 4:31 ` Pankaj Gupta
2020-06-30 14:26 ` [PATCH v1 5/6] mm/page_alloc: restrict ZONE_MOVABLE optimization in has_unmovable_pages() to memory offlining David Hildenbrand
2020-07-27 12:23 ` David Hildenbrand
2020-06-30 14:26 ` [PATCH v1 6/6] virtio-mem: don't special-case ZONE_MOVABLE David Hildenbrand
2020-07-21 9:59 ` David Hildenbrand [this message]
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