From: David Hildenbrand <david@redhat.com>
To: Peter Xu <peterx@redhat.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Cc: Nadav Amit <nadav.amit@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>
Subject: Re: [PATCH v3 2/3] selftests: soft-dirty: Add test for mprotect
Date: Fri, 22 Jul 2022 09:17:34 +0200 [thread overview]
Message-ID: <8fbbd68f-267c-1e0d-a578-7da4551c4c19@redhat.com> (raw)
In-Reply-To: <20220721183338.27871-3-peterx@redhat.com>
On 21.07.22 20:33, Peter Xu wrote:
> Add two soft-diryt test cases for mprotect() on both anon or file.
s/soft-diryt/soft-dirty/
>
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
> tools/testing/selftests/vm/soft-dirty.c | 69 ++++++++++++++++++++++++-
> 1 file changed, 68 insertions(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/vm/soft-dirty.c b/tools/testing/selftests/vm/soft-dirty.c
> index 08ab62a4a9d0..7d93906aa43f 100644
> --- a/tools/testing/selftests/vm/soft-dirty.c
> +++ b/tools/testing/selftests/vm/soft-dirty.c
> @@ -121,13 +121,78 @@ static void test_hugepage(int pagemap_fd, int pagesize)
> free(map);
> }
>
> +static void test_mprotect(int pagemap_fd, int pagesize, bool anon)
> +{
> + const char *type[] = {"file", "anon"};
> + const char *fname = "./soft-dirty-test-file";
> + int test_fd;
> + char *map;
Instead of fname, unlink, open, close, unlink you can use a tmpfile
FILE *file;
file = tmpfile();
if (!file) {
ksft_test_result_fail("tmpfile() failed\n");
return;
}
test_fd = fileno(file);
> +
> + if (anon) {
> + map = mmap(NULL, pagesize, PROT_READ|PROT_WRITE,
> + MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
> + if (!map)
> + ksft_exit_fail_msg("anon mmap failed\n");
> + } else {
> + unlink(fname);
> + test_fd = open(fname, O_RDWR | O_CREAT);
> + if (test_fd < 0) {
> + ksft_test_result_skip("Test %s huge page allocation\n", __func__);
Wrong copy-paste I assume :)
> + return;
> + }
> + ftruncate(test_fd, pagesize);
> + map = mmap(NULL, pagesize, PROT_READ|PROT_WRITE,
> + MAP_SHARED, test_fd, 0);
> + if (!map)
> + ksft_exit_fail_msg("file mmap failed\n");
> + }
> +
Apart from that LGTM.
--
Thanks,
David / dhildenb
next prev parent reply other threads:[~2022-07-22 7:18 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-21 18:33 [PATCH v3 0/3] mm/mprotect: Fix soft-dirty checks Peter Xu
2022-07-21 18:33 ` [PATCH v3 1/3] mm/mprotect: Fix soft-dirty check in can_change_pte_writable() Peter Xu
2022-07-22 7:08 ` David Hildenbrand
2022-07-22 13:51 ` Peter Xu
2022-07-22 13:59 ` David Hildenbrand
2022-07-22 17:21 ` Nadav Amit
2022-07-25 13:59 ` Peter Xu
2022-07-25 14:11 ` David Hildenbrand
2022-07-21 18:33 ` [PATCH v3 2/3] selftests: soft-dirty: Add test for mprotect Peter Xu
2022-07-22 7:17 ` David Hildenbrand [this message]
2022-07-22 13:44 ` Peter Xu
2022-07-22 14:00 ` David Hildenbrand
2022-07-22 14:07 ` David Hildenbrand
2022-07-22 14:37 ` Peter Xu
2022-07-21 18:33 ` [PATCH v3 3/3] selftests: Add soft-dirty into run_vmtests.sh Peter Xu
2022-07-22 7:18 ` David Hildenbrand
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=8fbbd68f-267c-1e0d-a578-7da4551c4c19@redhat.com \
--to=david@redhat.com \
--cc=aarcange@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=nadav.amit@gmail.com \
--cc=peterx@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).