Re: [Patch v2 2/2] selftests/mm: assert rmap behave as expected

[Wei Yang <richard.weiyang@gmail.com>]

On Sat, Jul 26, 2025 at 02:52:23AM +0000, Wei Yang wrote:
[...]
>+
>+int merge_and_migrate(struct global_data *data)
>+{
>+	int pagemap_fd;
>+	int ret = 0;
>+
>+	if (data->region == MAP_FAILED)
>+		return FAIL_ON_WORK;
>+
>+	ksm_start();

Forget to check the return value here.

Will update it.

>+
>+	ret = try_to_move_page(data->region);
>+
>+	pagemap_fd = open("/proc/self/pagemap", O_RDONLY);
>+	if (pagemap_fd == -1)
>+		return FAIL_ON_WORK;
>+	*data->expected_pfn = pagemap_get_pfn(pagemap_fd, data->region);
>+
>+	return ret;
>+}
>+

-- 
Wei Yang
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