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    Subject[PATCH 5.4 43/43] kselftest/vm: fix tests build with old libc
    Date
    From: Chengming Zhou <zhouchengming@bytedance.com>

    [ Upstream commit b773827e361952b3f53ac6fa4c4e39ccd632102e ]

    The error message when I build vm tests on debian10 (GLIBC 2.28):

    userfaultfd.c: In function `userfaultfd_pagemap_test':
    userfaultfd.c:1393:37: error: `MADV_PAGEOUT' undeclared (first use
    in this function); did you mean `MADV_RANDOM'?
    if (madvise(area_dst, test_pgsize, MADV_PAGEOUT))
    ^~~~~~~~~~~~
    MADV_RANDOM

    This patch includes these newer definitions from UAPI linux/mman.h, is
    useful to fix tests build on systems without these definitions in glibc
    sys/mman.h.

    Link: https://lkml.kernel.org/r/20220227055330.43087-2-zhouchengming@bytedance.com
    Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
    Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    tools/testing/selftests/vm/userfaultfd.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/tools/testing/selftests/vm/userfaultfd.c
    +++ b/tools/testing/selftests/vm/userfaultfd.c
    @@ -46,6 +46,7 @@
    #include <signal.h>
    #include <poll.h>
    #include <string.h>
    +#include <linux/mman.h>
    #include <sys/mman.h>
    #include <sys/syscall.h>
    #include <sys/ioctl.h>

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