--- a/tools/testing/selftests/vm/hugepage-mremap.c~mm-remove-duplicate-include-in-hugepage-mremapc +++ a/tools/testing/selftests/vm/hugepage-mremap.c @@ -15,7 +15,6 @@ #include <errno.h> #include <fcntl.h> /* Definition of O_* constants */ #include <sys/syscall.h> /* Definition of SYS_* constants */ -#include <unistd.h> #include <linux/userfaultfd.h> #include <sys/ioctl.h>