linux-kernel - Re: [PATCH 3/3] mm/selftests: Fix pagemap

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Message-ID: <146fee4b-fbd3-4571-9c81-8ae8393cb391@redhat.com>
Date:   Fri, 17 Nov 2023 00:10:55 +0100
From:   David Hildenbrand <david@...hat.com>
To:     Peter Xu <peterx@...hat.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Cc:     Muhammad Usama Anjum <usama.anjum@...labora.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andrei Vagin <avagin@...il.com>
Subject: Re: [PATCH 3/3] mm/selftests: Fix pagemap_ioctl memory map test

On 16.11.23 21:15, Peter Xu wrote:
> __FILE__ is not guaranteed to exist in current dir.  Replace that with
> argv[0] for memory map test.
> 
> Fixes: 46fd75d4a3c9 ("selftests: mm: add pagemap ioctl tests")
> Signed-off-by: Peter Xu <peterx@...hat.com>
> ---
>   tools/testing/selftests/mm/pagemap_ioctl.c | 9 ++++++---
>   1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/testing/selftests/mm/pagemap_ioctl.c b/tools/testing/selftests/mm/pagemap_ioctl.c
> index befab43719ba..d59517ed3d48 100644
> --- a/tools/testing/selftests/mm/pagemap_ioctl.c
> +++ b/tools/testing/selftests/mm/pagemap_ioctl.c
> @@ -36,6 +36,7 @@ int pagemap_fd;
>   int uffd;
>   int page_size;
>   int hpage_size;
> +const char *progname;
>   
>   #define LEN(region)	((region.end - region.start)/page_size)
>   
> @@ -1149,11 +1150,11 @@ int sanity_tests(void)
>   	munmap(mem, mem_size);
>   
>   	/* 9. Memory mapped file */
> -	fd = open(__FILE__, O_RDONLY);
> +	fd = open(progname, O_RDONLY);
>   	if (fd < 0)
>   		ksft_exit_fail_msg("%s Memory mapped file\n", __func__);
>   
> -	ret = stat(__FILE__, &sbuf);
> +	ret = stat(progname, &sbuf);
>   	if (ret < 0)
>   		ksft_exit_fail_msg("error %d %d %s\n", ret, errno, strerror(errno));
>   
> @@ -1472,12 +1473,14 @@ static void transact_test(int page_size)
>   			      extra_thread_faults);
>   }
>   
> -int main(void)
> +int main(int argc, char *argv[])
>   {
>   	int mem_size, shmid, buf_size, fd, i, ret;
>   	char *mem, *map, *fmem;
>   	struct stat sbuf;
>   
> +	progname = argv[0];
> +
>   	ksft_print_header();
>   
>   	if (init_uffd())

Reviewed-by: David Hildenbrand <david@...hat.com>

-- 
Cheers,

David / dhildenb