linux-kernel - [PATCH] proc: make config PROC_CHILDREN depend on PROC

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Date:   Fri,  9 Sep 2022 14:25:29 +0200
From:   Lukas Bulwahn <lukas.bulwahn@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        linux-fsdevel@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
        Lukas Bulwahn <lukas.bulwahn@...il.com>
Subject: [PATCH] proc: make config PROC_CHILDREN depend on PROC_FS

Commit 2e13ba54a268 ("fs, proc: introduce CONFIG_PROC_CHILDREN") introduces
the config PROC_CHILDREN to configure kernels to provide the
/proc/<pid>/task/<tid>/children file.

When one deselects PROC_FS for kernel builds without /proc/, the config
PROC_CHILDREN has no effect anymore, but is still visible in menuconfig.

Add the dependency on PROC_FS to make the PROC_CHILDREN option disappear
for kernel builds without /proc/.

Fixes: 2e13ba54a268 ("fs, proc: introduce CONFIG_PROC_CHILDREN")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@...il.com>
---
 fs/proc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/proc/Kconfig b/fs/proc/Kconfig
index c930001056f9..32b1116ae137 100644
--- a/fs/proc/Kconfig
+++ b/fs/proc/Kconfig
@@ -92,6 +92,7 @@ config PROC_PAGE_MONITOR

 config PROC_CHILDREN
 	bool "Include /proc/<pid>/task/<tid>/children file"
+	depends on PROC_FS
 	default n
 	help
 	  Provides a fast way to retrieve first level children pids of a task. See
-- 
2.17.1