linux-kernel - Re: [PATCH v4 1/6] mm: memcontrol: introduce mem_cgroup_ino() and mem_cgroup_get_from

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Message-ID: <Yo7dqwUZhpe2amtF@FVFYT0MHHV2J.googleapis.com>
Date:   Thu, 26 May 2022 09:53:47 +0800
From:   Muchun Song <songmuchun@...edance.com>
To:     Roman Gushchin <roman.gushchin@...ux.dev>
Cc:     Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        Dave Chinner <dchinner@...hat.com>,
        linux-kernel@...r.kernel.org,
        Kent Overstreet <kent.overstreet@...il.com>,
        Hillf Danton <hdanton@...a.com>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: Re: [PATCH v4 1/6] mm: memcontrol: introduce mem_cgroup_ino() and
 mem_cgroup_get_from_ino()

On Wed, May 25, 2022 at 01:25:55PM -0700, Roman Gushchin wrote:
> Shrinker debugfs requires a way to represent memory cgroups without
> using full paths, both for displaying information and getting input
> from a user.
> 
> Cgroup inode number is a perfect way, already used by bpf.
> 
> This commit adds a couple of helper functions which will be used
> to handle memcg-aware shrinkers.
> 
> Signed-off-by: Roman Gushchin <roman.gushchin@...ux.dev>

Acked-by: Muchun Song <songmuchun@...edance.com>

Thanks.