Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is enabled

From	Tejun Heo <tj@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is enabled
Date	2015-08-31 16:40 +0200
Message-ID	<q3ypA-259-9@gated-at.bofh.it> (permalink)
References	<q3g9j-17i-3@gated-at.bofh.it> <q3xjQ-v6-13@gated-at.bofh.it> <q3xDb-RS-11@gated-at.bofh.it> <q3ypA-259-11@gated-at.bofh.it>
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On Mon, Aug 31, 2015 at 05:30:08PM +0300, Vladimir Davydov wrote:
> slab/slub can issue alloc_pages() any time with any flags they want and
> it won't be accounted to memcg, because kmem is accounted at slab/slub
> layer, not in buddy.

Hmmm?  I meant the eventual calling into try_charge w/ GFP_NOWAIT.
Speculative usage of GFP_NOWAIT is bound to increase and we don't want
to put on extra restrictions from memcg side.  For memory.high,
punting to the return path is a pretty stright-forward solution which
should make the problem go away almost entirely.

Thanks.

-- 
tejun
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Thread

[PATCH 0/2] Fix memcg/memory.high in case kmem accounting is enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-08-30 21:10 +0200
  [PATCH 2/2] mm/slub: do not bypass memcg reclaim for high-order page allocation Vladimir Davydov <vdavydov@parallels.com> - 2015-08-30 21:10 +0200
  [PATCH 1/2] mm/slab: skip memcg reclaim only if in atomic context Vladimir Davydov <vdavydov@parallels.com> - 2015-08-30 21:10 +0200
  Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Michal Hocko <mhocko@kernel.org> - 2015-08-31 15:30 +0200
    Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Tejun Heo <tj@kernel.org> - 2015-08-31 15:50 +0200
      Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Tejun Heo <tj@kernel.org> - 2015-08-31 16:40 +0200
        Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-08-31 17:20 +0200
          Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Tejun Heo <tj@kernel.org> - 2015-08-31 17:50 +0200
            Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-08-31 19:00 +0200
              Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Tejun Heo <tj@kernel.org> - 2015-08-31 19:10 +0200
                Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-08-31 21:30 +0200
                Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Christoph Lameter <cl@linux.com> - 2015-08-31 22:30 +0200
                Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-09-01 11:30 +0200
      Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-08-31 16:40 +0200
    Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-08-31 16:30 +0200
      Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Tejun Heo <tj@kernel.org> - 2015-08-31 16:50 +0200
        Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-08-31 17:30 +0200
      Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Michal Hocko <mhocko@kernel.org> - 2015-09-01 14:40 +0200
        Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-09-01 15:50 +0200
          Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Michal Hocko <mhocko@kernel.org> - 2015-09-01 17:10 +0200
            Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-09-01 19:00 +0200
              Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Michal Hocko <mhocko@kernel.org> - 2015-09-01 20:40 +0200
                Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-09-02 11:40 +0200
                Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Christoph Lameter <cl@linux.com> - 2015-09-02 20:20 +0200
                Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-09-03 11:40 +0200
                Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Tejun Heo <tj@kernel.org> - 2015-09-03 18:40 +0200
                Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-09-04 13:20 +0200
                Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Tejun Heo <tj@kernel.org> - 2015-09-04 17:50 +0200
                Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Vladimir Davydov <vdavydov@parallels.com> - 2015-09-04 20:30 +0200
                Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Tejun Heo <tj@kernel.org> - 2015-09-04 21:40 +0200
                Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is  enabled Michal Hocko <mhocko@kernel.org> - 2015-09-04 16:40 +0200

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