linux-kernel - [PATCH] selftests: pid_namespace: Fix missing mount headers in pid

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Message-ID: <20250506154416.3102-1-moonhee.lee.ca@gmail.com>
Date: Tue,  6 May 2025 08:44:16 -0700
From: Moon Hee Lee <moonhee.lee.ca@...il.com>
To: brauner@...nel.org,
	shuah@...nel.org
Cc: linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	skhan@...uxfoundation.org,
	linux-kernel-mentees@...ts.linux.dev,
	Moon Hee Lee <moonhee.lee.ca@...il.com>
Subject: [PATCH] selftests: pid_namespace: Fix missing mount headers in pid_max.c

Fix compilation error in pid_max.c by including <sys/mount.h> to define
mount(), umount2(), MS_PRIVATE, MS_REC, and MNT_DETACH.

The test now builds successfully.

Signed-off-by: Moon Hee Lee <moonhee.lee.ca@...il.com>
---
 tools/testing/selftests/pid_namespace/pid_max.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/pid_namespace/pid_max.c b/tools/testing/selftests/pid_namespace/pid_max.c
index 51c414faabb0..972bedc475f1 100644
--- a/tools/testing/selftests/pid_namespace/pid_max.c
+++ b/tools/testing/selftests/pid_namespace/pid_max.c
@@ -11,6 +11,7 @@
 #include <string.h>
 #include <syscall.h>
 #include <sys/wait.h>
+#include <sys/mount.h>
 
 #include "../kselftest_harness.h"
 #include "../pidfd/pidfd.h"
-- 
2.43.0