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From: Dave Hansen <dave.hansen@intel.com>
To: Shakeel Butt <shakeelb@google.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Linux MM <linux-mm@kvack.org>,
	Dan Williams <dan.j.williams@intel.com>,
	Jonathan Adams <jwadams@google.com>,
	"Chen, Tim C" <tim.c.chen@intel.com>
Subject: Re: [PATCH 0/4] [RFC] Migrate Pages in lieu of discard
Date: Thu, 17 Oct 2019 13:51:10 -0700	[thread overview]
Message-ID: <70731276-ca8c-afa9-aca2-1ef210d4ac01@intel.com> (raw)
In-Reply-To: <CALvZod7kqjPJcdNQu3CO0+GU=0PyUE1YZgrDJcs8dBHpKbLkSg@mail.gmail.com>

On 10/17/19 9:58 AM, Shakeel Butt wrote:
>> My expectation (and I haven't confirmed this) is that the any memory use
>> is accounted to the owning cgroup, whether it is DRAM or PMEM.  memcg
>> limit reclaim and global reclaim both end up doing migrations and
>> neither should have a net effect on the counters.
>>
> Hmm I didn't see the memcg charge migration in the code on demotion.
> So, in the code [patch 3] the counters are being decremented as DRAM
> is freed but not incremented for PMEM.

I had assumed that the migration code was doing this for me.  I'll go
make sure either way.


  reply	other threads:[~2019-10-17 20:51 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-16 22:11 [PATCH 0/4] [RFC] Migrate Pages in lieu of discard Dave Hansen
2019-10-16 22:11 ` Dave Hansen
2019-10-16 22:11 ` [PATCH 1/4] node: Define and export memory migration path Dave Hansen
2019-10-16 22:11   ` Dave Hansen
2019-10-17 11:12   ` Kirill A. Shutemov
2019-10-17 11:44     ` Kirill A. Shutemov
2019-10-16 22:11 ` [PATCH 2/4] mm/migrate: Defer allocating new page until needed Dave Hansen
2019-10-16 22:11   ` Dave Hansen
2019-10-17 11:27   ` Kirill A. Shutemov
2019-10-16 22:11 ` [PATCH 3/4] mm/vmscan: Attempt to migrate page in lieu of discard Dave Hansen
2019-10-16 22:11   ` Dave Hansen
2019-10-17 17:30   ` Yang Shi
2019-10-17 17:30     ` Yang Shi
2019-10-18 18:15     ` Dave Hansen
2019-10-18 21:02       ` Yang Shi
2019-10-18 21:02         ` Yang Shi
2019-10-16 22:11 ` [PATCH 4/4] mm/vmscan: Consider anonymous pages without swap Dave Hansen
2019-10-16 22:11   ` Dave Hansen
2019-10-17  3:45 ` [PATCH 0/4] [RFC] Migrate Pages in lieu of discard Shakeel Butt
2019-10-17  3:45   ` Shakeel Butt
2019-10-17 14:26   ` Dave Hansen
2019-10-17 16:58     ` Shakeel Butt
2019-10-17 16:58       ` Shakeel Butt
2019-10-17 20:51       ` Dave Hansen [this message]
2019-10-17 17:20     ` Yang Shi
2019-10-17 17:20       ` Yang Shi
2019-10-17 21:05       ` Dave Hansen
2019-10-17 22:58       ` Shakeel Butt
2019-10-17 22:58         ` Shakeel Butt
2019-10-18 21:44         ` Yang Shi
2019-10-18 21:44           ` Yang Shi
2019-10-17 16:01 ` Suleiman Souhlal
2019-10-17 16:01   ` Suleiman Souhlal
2019-10-17 16:32   ` Dave Hansen
2019-10-17 16:39     ` Shakeel Butt
2019-10-17 16:39       ` Shakeel Butt
2019-10-18  8:11     ` Suleiman Souhlal
2019-10-18  8:11       ` Suleiman Souhlal
2019-10-18 15:10       ` Dave Hansen
2019-10-18 15:39         ` Suleiman Souhlal
2019-10-18 15:39           ` Suleiman Souhlal
2019-10-18  7:44 ` Michal Hocko
2019-10-18 14:54   ` Dave Hansen
2019-10-18 21:39     ` Yang Shi
2019-10-18 21:39       ` Yang Shi
2019-10-18 21:55       ` Dan Williams
2019-10-18 21:55         ` Dan Williams
2019-10-22 13:49     ` Michal Hocko

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