From: Johannes Weiner <hannes@cmpxchg.org>
To: Guopeng Zhang <guopeng.zhang@linux.dev>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Roman Gushchin <roman.gushchin@linux.dev>,
Michal Hocko <mhocko@kernel.org>,
Shakeel Butt <shakeel.butt@linux.dev>,
Muchun Song <muchun.song@linux.dev>,
cgroups@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org,
Guopeng Zhang <zhangguopeng@kylinos.cn>
Subject: Re: [PATCH] mm: memcontrol: factor out memcg kmem uncharge sequence
Date: Mon, 13 Jul 2026 07:42:31 -0400 [thread overview]
Message-ID: <20260713114231.GK276793@cmpxchg.org> (raw)
In-Reply-To: <20260713090304.3015329-1-guopeng.zhang@linux.dev>
On Mon, Jul 13, 2026 at 05:03:04PM +0800, Guopeng Zhang wrote:
> From: Guopeng Zhang <zhangguopeng@kylinos.cn>
>
> The kmem-uncharge sequence (mod_memcg_state(MEMCG_KMEM) +
> memcg1_account_kmem + conditional memcg_uncharge) is duplicated verbatim
> in obj_cgroup_release() and drain_obj_stock_slot(). Factor it into a
> small memcg_uncharge_kmem() helper. The reference get/put stays at the
> call sites, as they differ.
>
> No functional change.
>
> Signed-off-by: Guopeng Zhang <zhangguopeng@kylinos.cn>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
next prev parent reply other threads:[~2026-07-13 11:42 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-13 9:03 [PATCH] mm: memcontrol: factor out memcg kmem uncharge sequence Guopeng Zhang
2026-07-13 10:24 ` Tao Cui
2026-07-13 10:25 ` Tao Cui
2026-07-13 11:42 ` Johannes Weiner [this message]
2026-07-13 12:33 ` Muchun Song
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