Re: [PATCH v2] cgroup: Avoid compiler warnings with no subsystems

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To: Kees Cook <keescook@xxxxxxxxxxxx>
Subject: Re: [PATCH v2] cgroup: Avoid compiler warnings with no subsystems
From: Tejun Heo <tj@xxxxxxxxxx>
Date: Fri, 27 Aug 2021 07:51:05 -1000
Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>, Zefan Li <lizefan.x@xxxxxxxxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, cgroups@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-hardening@xxxxxxxxxxxxxxx
In-reply-to: <20210827150424.2729274-1-keescook@chromium.org>
References: <20210827150424.2729274-1-keescook@chromium.org>

On Fri, Aug 27, 2021 at 08:04:24AM -0700, Kees Cook wrote:
> +	if (CGROUP_SUBSYS_COUNT > 0 && ss)

Can we encapsulate this in a macro so that it's clear (or at least
consolidated) why we need these without adding a comment in each spot?

Thanks.

-- 
tejun

References:
- [PATCH v2] cgroup: Avoid compiler warnings with no subsystems
  - From: Kees Cook

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