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From: SeongJae Park <sj@kernel.org>
To: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Cc: SeongJae Park <sj@kernel.org>, Alice Ryhl <aliceryhl@google.com>,
	Andrew Ballance <andrewjballance@gmail.com>,
	maple-tree@lists.infradead.org, linux-mm@kvack.org,
	"Liam R. Howlett" <liam@infradead.org>
Subject: Re: [PATCH] maple_tree: remove undocumented CONFIG_MAPLE_RCU_DISABLED macro
Date: Wed, 10 Jun 2026 17:40:01 -0700	[thread overview]
Message-ID: <20260611004001.69726-1-sj@kernel.org> (raw)
In-Reply-To: <20260610220905.99860-1-enelsonmoore@gmail.com>

On Wed, 10 Jun 2026 15:09:04 -0700 Ethan Nelson-Moore <enelsonmoore@gmail.com> wrote:

> <linux/maple_tree.h> consults the macro CONFIG_MAPLE_RCU_DISABLED to
> determine whether to disable the mt_in_rcu() function (by making it
> always return false). This macro is not reachable via Kconfig, despite
> its name, and is not documented anywhere. Remove it to avoid polluting
> the CONFIG_* namespace.
> 
> Discovered while searching for CONFIG_* symbols referenced in code but
> not defined in any Kconfig file.

Seems this was also found in the past [1], and apparently this is not
intended to be as is.

I also think it is better to be removed or renamed.

[1] https://lore.kernel.org/20230906152325.dblzauybyoq5kd35@revolver

> 
> Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>

Acked-by: SeongJae Park <sj@kernel.org>


Thanks,
SJ

[...]


      reply	other threads:[~2026-06-11  0:40 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-10 22:09 [PATCH] maple_tree: remove undocumented CONFIG_MAPLE_RCU_DISABLED macro Ethan Nelson-Moore
2026-06-11  0:40 ` SeongJae Park [this message]

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