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From: Vasily Averin <vvs@virtuozzo.com>
To: Michal Hocko <mhocko@kernel.org>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Vladimir Davydov <vdavydov.dev@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>
Cc: Roman Gushchin <guro@fb.com>, Uladzislau Rezki <urezki@gmail.com>,
	Vlastimil Babka <vbabka@suse.cz>,
	Shakeel Butt <shakeelb@google.com>,
	Mel Gorman <mgorman@techsingularity.net>,
	Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
	cgroups@vger.kernel.org, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org, kernel@openvz.org
Subject: [PATCH memcg RFC 0/3] memcg: prohibit unconditional exceeding the limit of dying tasks
Date: Wed, 20 Oct 2021 15:11:35 +0300	[thread overview]
Message-ID: <fe1d45a1-276d-b0f4-fb71-8f5c1a9e8872@virtuozzo.com> (raw)
In-Reply-To: <YW/WoJDFM3ddHn7Y@dhcp22.suse.cz>

Dear Michal,
as you requested, I splited v4 patch version into 3 separate parts.
Let's discuss each of them.

Open questions/ToDo:

- Update patch descriptions (and add some comments) 

- in part 2 aka "memcg: remove charge forcinig for dying tasks":
  should we keep task_is_dying() in mem_cgroup_out_of_memory() ?

- in part 3 aka "memcg: handle memcg oom failures"
   what is the best way to notify pagefault_out_of_memory() about 
    mem_cgroup_out_of_memory failure ?
    
- what is the best way to handle memcg failure doe to kmem limit,
    it can trigger false global OOM

Vasily Averin (3):
  mm: do not firce global OOM from inside dying tasks
  memcg: remove charge forcinig for dying tasks
  memcg: handle memcg oom failures

 mm/memcontrol.c | 52 ++++++++++++++++++++++++++++---------------------
 mm/oom_kill.c   |  3 +++
 2 files changed, 33 insertions(+), 22 deletions(-)

-- 
2.32.0


  reply	other threads:[~2021-10-20 12:12 UTC|newest]

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-18  8:13 [PATCH memcg 0/1] false global OOM triggered by memcg-limited task Vasily Averin
2021-10-18  9:04 ` Michal Hocko
2021-10-18 10:05   ` Vasily Averin
2021-10-18 10:12     ` Vasily Averin
2021-10-18 11:53     ` Michal Hocko
     [not found]       ` <27dc0c49-a0d6-875b-49c6-0ef5c0cc3ac8@virtuozzo.com>
2021-10-18 12:27         ` Michal Hocko
2021-10-18 15:07           ` Shakeel Butt
2021-10-18 16:51             ` Michal Hocko
2021-10-18 17:13               ` Shakeel Butt
2021-10-18 18:52             ` Vasily Averin
2021-10-18 19:18               ` Vasily Averin
2021-10-19  5:34                 ` Shakeel Butt
2021-10-19  5:33               ` Shakeel Butt
2021-10-19  6:42                 ` Vasily Averin
2021-10-19  8:47                   ` Michal Hocko
2021-10-19  6:30       ` Vasily Averin
2021-10-19  8:49         ` Michal Hocko
2021-10-19 10:30           ` Vasily Averin
2021-10-19 11:54             ` Michal Hocko
2021-10-19 12:04               ` Michal Hocko
2021-10-19 13:26                 ` Vasily Averin
2021-10-19 14:13                   ` Michal Hocko
2021-10-19 14:19                     ` Michal Hocko
2021-10-19 19:09                     ` Vasily Averin
2021-10-20  8:07                       ` [PATCH memcg v4] memcg: prohibit unconditional exceeding the limit of dying tasks Vasily Averin
2021-10-20  8:43                         ` Michal Hocko
2021-10-20 12:11                           ` Vasily Averin [this message]
     [not found]                           ` <cover.1634730787.git.vvs@virtuozzo.com>
2021-10-20 12:12                             ` [PATCH memcg 1/3] mm: do not firce global OOM from inside " Vasily Averin
2021-10-20 12:33                               ` Michal Hocko
2021-10-20 13:52                                 ` Vasily Averin
2021-10-20 12:13                             ` [PATCH memcg 2/3] memcg: remove charge forcinig for " Vasily Averin
2021-10-20 12:41                               ` Michal Hocko
2021-10-20 14:21                                 ` Vasily Averin
2021-10-20 14:57                                   ` Michal Hocko
2021-10-20 15:20                                     ` Tetsuo Handa
2021-10-21 10:03                                       ` Michal Hocko
2021-10-20 12:14                             ` [PATCH memcg 3/3] memcg: handle memcg oom failures Vasily Averin
2021-10-20 13:02                               ` Michal Hocko
2021-10-20 15:46                                 ` Vasily Averin
2021-10-21 11:49                                   ` Michal Hocko
2021-10-21 15:05                                     ` Vasily Averin
2021-10-21 16:47                                       ` Michal Hocko
2021-10-22  8:10                                         ` [PATCH memcg v2 0/2] memcg: prohibit unconditional exceeding the limit of dying tasks Vasily Averin
     [not found]                                         ` <cover.1634889066.git.vvs@virtuozzo.com>
2021-10-22  8:11                                           ` [PATCH memcg v2 1/2] mm, oom: do not trigger out_of_memory from the #PF Vasily Averin
2021-10-22  8:55                                             ` Michal Hocko
2021-10-22  8:11                                           ` [PATCH memcg v2 2/2] memcg: prohibit unconditional exceeding the limit of dying tasks Vasily Averin
2021-10-22  9:10                                             ` Michal Hocko
2021-10-23 13:18                                               ` [PATCH memcg v3 0/3] " Vasily Averin
     [not found]                                               ` <cover.1634994605.git.vvs@virtuozzo.com>
2021-10-23 13:19                                                 ` [PATCH memcg v3 1/3] mm, oom: pagefault_out_of_memory: don't force global OOM for " Vasily Averin
2021-10-25  9:27                                                   ` Michal Hocko
2021-10-23 13:20                                                 ` [PATCH memcg v3 2/3] mm, oom: do not trigger out_of_memory from the #PF Vasily Averin
2021-10-23 15:01                                                   ` Tetsuo Handa
2021-10-23 19:15                                                     ` Vasily Averin
2021-10-25  8:04                                                     ` Michal Hocko
2021-10-26 13:56                                                       ` Tetsuo Handa
2021-10-26 14:07                                                         ` Michal Hocko
2021-10-25  9:34                                                   ` Michal Hocko
2021-10-23 13:20                                                 ` [PATCH memcg v3 3/3] memcg: prohibit unconditional exceeding the limit of dying tasks Vasily Averin
2021-10-25  9:36                                                   ` Michal Hocko
2021-10-27 22:36                                                     ` Andrew Morton
2021-10-28  7:22                                                       ` Vasily Averin
2021-10-29  7:46                                                         ` Greg Kroah-Hartman
2021-10-29  7:58                                                       ` Michal Hocko
2021-10-21  8:03   ` [PATCH memcg 0/1] false global OOM triggered by memcg-limited task Vasily Averin
2021-10-21 11:49     ` Michal Hocko
2021-10-21 13:24       ` Vasily Averin

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