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From: Dave Hansen <dave.hansen@intel.com>
To: David Hildenbrand <david@redhat.com>,
	Alexander Duyck <alexander.h.duyck@linux.intel.com>,
	Michal Hocko <mhocko@kernel.org>
Cc: akpm@linux-foundation.org, aarcange@redhat.com,
	dan.j.williams@intel.com, konrad.wilk@oracle.com,
	lcapitulino@redhat.com, mgorman@techsingularity.net,
	mm-commits@vger.kernel.org, mst@redhat.com, osalvador@suse.de,
	pagupta@redhat.com, pbonzini@redhat.com, riel@surriel.com,
	vbabka@suse.cz, wei.w.wang@intel.com, willy@infradead.org,
	yang.zhang.wz@gmail.com, linux-mm@kvack.org
Subject: Re: + mm-introduce-reported-pages.patch added to -mm tree
Date: Wed, 6 Nov 2019 16:20:47 -0800	[thread overview]
Message-ID: <95a78ac2-73bf-2985-9769-e269e8d13d68@intel.com> (raw)
In-Reply-To: <f84f53b8-221e-02bd-2e7a-c0040ca03a38@redhat.com>

On 11/6/19 3:33 PM, David Hildenbrand wrote:
> We want do discuss *design* and *architecture* here, not
> *implementation details*.

Could folks remind me what they see as the high-level design delta
between these two approaches?

It seems to me like Alex's approach tries to minimize new metadata, but
imposes some rules on the internals of the allocator.  Nitesh's is more
disconnected from the allocator, but has the increased complexity of
managing some new disjoint metadata.

Right?

Neither one of those seems particularly good or bad on face value.
They've just staked out two reasonable but different approaches.  Is
there anything intractably bad about either approach that I'm missing?



  reply	other threads:[~2019-11-07  0:20 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20191106000547.juQRi83gi%akpm@linux-foundation.org>
2019-11-06 12:16 ` + mm-introduce-reported-pages.patch added to -mm tree Michal Hocko
2019-11-06 14:09   ` David Hildenbrand
2019-11-06 16:35     ` Alexander Duyck
2019-11-06 16:54       ` Michal Hocko
2019-11-06 17:48         ` Alexander Duyck
2019-11-06 22:11           ` Mel Gorman
2019-11-06 23:38             ` David Hildenbrand
2019-11-07  0:20             ` Alexander Duyck
2019-11-07 10:20               ` Mel Gorman
2019-11-07 16:07                 ` Alexander Duyck
2019-11-08  9:43                   ` Mel Gorman
2019-11-08 16:17                     ` Alexander Duyck
2019-11-08 18:41                       ` Mel Gorman
2019-11-08 20:29                         ` Alexander Duyck
2019-11-09 14:57                           ` Mel Gorman
2019-11-10 18:03                             ` Alexander Duyck
2019-11-06 23:33           ` David Hildenbrand
2019-11-07  0:20             ` Dave Hansen [this message]
2019-11-07  0:52               ` David Hildenbrand
2019-11-07 17:12                 ` Dave Hansen
2019-11-07 17:46                   ` Michal Hocko
2019-11-07 18:08                     ` Dave Hansen
2019-11-07 18:12                     ` Alexander Duyck
2019-11-08  9:57                       ` Michal Hocko
2019-11-08 16:43                         ` Alexander Duyck
2019-11-07 18:46                   ` Qian Cai
2019-11-07 18:02             ` Alexander Duyck
2019-11-07 19:37               ` Nitesh Narayan Lal
2019-11-07 22:46                 ` Alexander Duyck
2019-11-07 22:43               ` David Hildenbrand
2019-11-08  0:42                 ` Alexander Duyck
2019-11-08  7:06                   ` David Hildenbrand
2019-11-08 17:18                     ` Alexander Duyck
2019-11-12 13:04                       ` David Hildenbrand
2019-11-12 18:34                         ` Alexander Duyck
2019-11-12 21:05                           ` David Hildenbrand
2019-11-12 22:17                             ` David Hildenbrand
2019-11-12 22:19                             ` Alexander Duyck
2019-11-12 23:10                               ` David Hildenbrand
2019-11-13  0:31                                 ` Alexander Duyck
2019-11-13 18:51                           ` Nitesh Narayan Lal
2019-11-06 16:49   ` Nitesh Narayan Lal
2019-11-11 18:52   ` Nitesh Narayan Lal
2019-11-11 22:00     ` Alexander Duyck
2019-11-12 15:19       ` Nitesh Narayan Lal
2019-11-12 16:18         ` Alexander Duyck
2019-11-13 18:39           ` Nitesh Narayan Lal
2020-02-04  1:33 incoming Andrew Morton
2020-02-12  0:19 ` + mm-introduce-reported-pages.patch added to -mm tree Andrew Morton

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