linux-kernel - Re: [PATCH v8 1/8] mm: Define obj_cgroup_get() if CONFIG

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Message-ID: <20240928134621.GA957841@cmpxchg.org>
Date: Sat, 28 Sep 2024 09:46:21 -0400
From: Johannes Weiner <hannes@...xchg.org>
To: Kanchana P Sridhar <kanchana.p.sridhar@...el.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org, yosryahmed@...gle.com,
	nphamcs@...il.com, chengming.zhou@...ux.dev, usamaarif642@...il.com,
	shakeel.butt@...ux.dev, ryan.roberts@....com, ying.huang@...el.com,
	21cnbao@...il.com, akpm@...ux-foundation.org, nanhai.zou@...el.com,
	wajdi.k.feghali@...el.com, vinodh.gopal@...el.com
Subject: Re: [PATCH v8 1/8] mm: Define obj_cgroup_get() if CONFIG_MEMCG is
 not defined.

On Fri, Sep 27, 2024 at 07:16:13PM -0700, Kanchana P Sridhar wrote:
> This resolves an issue with obj_cgroup_get() not being defined if
> CONFIG_MEMCG is not defined.
> 
> Before this patch, we would see build errors if obj_cgroup_get() is
> called from code that is agnostic of CONFIG_MEMCG.
> 
> The zswap_store() changes for large folios in subsequent commits will
> require the use of obj_cgroup_get() in zswap code that falls into this
> category.
> 
> Signed-off-by: Kanchana P Sridhar <kanchana.p.sridhar@...el.com>
> Reviewed-by: Nhat Pham <nphamcs@...il.com>

Acked-by: Johannes Weiner <hannes@...xchg.org>