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Date:   Fri,  8 Apr 2022 04:57:39 +0000
Message-Id: <20220408045743.1432968-1-yosryahmed@google.com>
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Subject: [PATCH v3 0/4] memcg: introduce per-memcg proactive reclaim
From:   Yosry Ahmed <yosryahmed@google.com>
To:     Johannes Weiner <hannes@cmpxchg.org>,
        Michal Hocko <mhocko@kernel.org>,
        Shakeel Butt <shakeelb@google.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Roman Gushchin <roman.gushchin@linux.dev>
Cc:     David Rientjes <rientjes@google.com>, Tejun Heo <tj@kernel.org>,
        Zefan Li <lizefan.x@bytedance.com>,
        Jonathan Corbet <corbet@lwn.net>,
        Shuah Khan <shuah@kernel.org>, Yu Zhao <yuzhao@google.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Wei Xu <weixugc@google.com>, Greg Thelen <gthelen@google.com>,
        Chen Wandun <chenwandun@huawei.com>,
        Vaibhav Jain <vaibhav@linux.ibm.com>,
        "=?UTF-8?q?Michal=20Koutn=C3=BD?=" <mkoutny@suse.com>,
        Tim Chen <tim.c.chen@linux.intel.com>, cgroups@vger.kernel.org,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
        Yosry Ahmed <yosryahmed@google.com>
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Precedence: bulk

This patch series adds a memory.reclaim proactive reclaim interface.
The rationale behind the interface and how it works are in the first
patch.

---

Changes in V3:
- Fix cg_write() (in patch 2) to properly return -1 if open() fails
  and not fail if len == errno.
- Remove debug printf() in patch 3.

Changes in V2:
- Add the interface to root as well.
- Added a selftest.
- Documented the interface as a nested-keyed interface, which makes
  adding optional arguments in the future easier (see doc updates in the
  first patch).
- Modified the commit message to reflect changes and add a timeout
  argument as a suggested possible extension
- Return -EAGAIN if the kernel fails to reclaim the full requested
  amount.

---

Shakeel Butt (1):
  memcg: introduce per-memcg reclaim interface

Yosry Ahmed (3):
  selftests: cgroup: return the errno of write() in cg_write() on
    failure
  selftests: cgroup: fix alloc_anon_noexit() instantly freeing memory
  selftests: cgroup: add a selftest for memory.reclaim

 Documentation/admin-guide/cgroup-v2.rst       | 21 +++++
 mm/memcontrol.c                               | 37 ++++++++
 tools/testing/selftests/cgroup/cgroup_util.c  | 32 ++++---
 .../selftests/cgroup/test_memcontrol.c        | 93 ++++++++++++++++++-
 4 files changed, 166 insertions(+), 17 deletions(-)

-- 
2.35.1.1178.g4f1659d476-goog