linux-kernel - [PATCH v2 0/2] mm: memcg: fix tracking of pending stats updates values

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Message-ID: <20230922175741.635002-1-yosryahmed@google.com>
Date:   Fri, 22 Sep 2023 17:57:38 +0000
From:   Yosry Ahmed <yosryahmed@...gle.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Shakeel Butt <shakeelb@...gle.com>
Cc:     Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Muchun Song <muchun.song@...ux.dev>,
        "Michal Koutný" <mkoutny@...e.com>,
        linux-mm@...ck.org, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org, Yosry Ahmed <yosryahmed@...gle.com>
Subject: [PATCH v2 0/2] mm: memcg: fix tracking of pending stats updates values

While working on adjacent code [1], I realized that the values passed
into memcg_rstat_updated() to keep track of the magnitude of pending
updates is consistent. It is mostly in pages, but sometimes it can be in
bytes or KBs. Fix that.

Patch 1 reworks memcg_page_state_unit() so that we can reuse it in patch
2 to check and normalize the units of state updates.

[1]https://lore.kernel.org/lkml/20230921081057.3440885-1-yosryahmed@google.com/

v1 -> v2:
- Rebased on top of mm-unstable.

Yosry Ahmed (2):
  mm: memcg: refactor page state unit helpers
  mm: memcg: normalize the value passed into memcg_rstat_updated()

 mm/memcontrol.c | 64 +++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 51 insertions(+), 13 deletions(-)

-- 
2.42.0.515.g380fc7ccd1-goog