I failed to build this test on Ubuntu 24.04. Compiler complained about undefined functions mount, umount and some mount related flags.

Signed-off-by: Chen Linxuan chenlinxuan@uniontech.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 51c414faabb0f..972bedc475f12 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"