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From: "Michael S. Tsirkin" <mst@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Rafael Aquini <aquini@redhat.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	virtualization@lists.linux-foundation.org,
	Rusty Russell <rusty@rustcorp.com.au>,
	Rik van Riel <riel@redhat.com>, Mel Gorman <mel@csn.ul.ie>,
	Andi Kleen <andi@firstfloor.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	Minchan Kim <minchan@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: Re: [PATCH v10 0/5] make balloon pages movable by compaction
Date: Tue, 25 Sep 2012 03:17:25 +0200	[thread overview]
Message-ID: <20120925011725.GB22893@redhat.com> (raw)
In-Reply-To: <20120917151531.e9ac59f2.akpm@linux-foundation.org>

On Mon, Sep 17, 2012 at 03:15:31PM -0700, Andrew Morton wrote:
> How can a patchset reach v10 and have zero Reviewed-by's?

I think the problem is, this adds an API between mm and balloon
device that is pretty complex: consider that previously we literally
only used alloc_page, __free_page and page->lru field.

So you end up with a problem: mm bits don't do anything
by themselves so mm people aren't very interested and
don't know about virtio anyway, while
we virtio device driver people lack a clue about compaction.

Having said that I think I'm getting my head about some of the issues so
I commented and the patchset is hopefully getting there.

-- 
MST

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      parent reply	other threads:[~2012-09-25  1:16 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-09-17 16:38 Rafael Aquini
2012-09-17 16:38 ` [PATCH v10 1/5] mm: introduce a common interface for balloon pages mobility Rafael Aquini
2012-09-17 22:15   ` Andrew Morton
2012-09-18 16:24     ` Rafael Aquini
2012-09-18 22:09       ` Andrew Morton
2012-09-25  1:05       ` Michael S. Tsirkin
2012-09-25 14:00         ` Rafael Aquini
2012-09-24 12:44   ` Peter Zijlstra
2012-09-17 16:38 ` [PATCH v10 2/5] mm: introduce compaction and migration for ballooned pages Rafael Aquini
2012-09-17 16:38 ` [PATCH v10 3/5] virtio_balloon: introduce migration primitives to balloon pages Rafael Aquini
2012-09-17 22:15   ` Andrew Morton
2012-09-18 14:07     ` Rafael Aquini
2012-09-25  0:40   ` Michael S. Tsirkin
2012-09-25 18:07     ` Rafael Aquini
2012-09-17 16:38 ` [PATCH v10 4/5] mm: introduce putback_movable_pages() Rafael Aquini
2012-09-17 16:38 ` [PATCH v10 5/5] mm: add vm event counters for balloon pages compaction Rafael Aquini
2012-09-17 22:15 ` [PATCH v10 0/5] make balloon pages movable by compaction Andrew Morton
2012-09-17 22:45   ` Rik van Riel
2012-09-18  0:45   ` Rusty Russell
2012-09-25  1:17   ` Michael S. Tsirkin [this message]

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