From: Wei Yang <richard.weiyang@gmail.com>
To: akpm@linux-foundation.org, david@redhat.com,
lorenzo.stoakes@oracle.com, ziy@nvidia.com,
baolin.wang@linux.alibaba.com
Cc: linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
Wei Yang <richard.weiyang@gmail.com>
Subject: [PATCH] selftests/mm: directly add pagesize instead of increase until page size
Date: Sat, 30 Aug 2025 02:31:02 +0000 [thread overview]
Message-ID: <20250830023102.14981-1-richard.weiyang@gmail.com> (raw)
The check of is_backed_by_folio() is done on each page.
Directly move pointer to next page instead of increase one and check if
it is page size aligned.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
---
tools/testing/selftests/mm/split_huge_page_test.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests/mm/split_huge_page_test.c b/tools/testing/selftests/mm/split_huge_page_test.c
index 10ae65ea032f..7f7016ba4054 100644
--- a/tools/testing/selftests/mm/split_huge_page_test.c
+++ b/tools/testing/selftests/mm/split_huge_page_test.c
@@ -423,9 +423,8 @@ static void split_pte_mapped_thp(void)
/* smap does not show THPs after mremap, use kpageflags instead */
thp_size = 0;
- for (i = 0; i < pagesize * 4; i++)
- if (i % pagesize == 0 &&
- is_backed_by_folio(&pte_mapped[i], pmd_order, pagemap_fd, kpageflags_fd))
+ for (i = 0; i < pagesize * 4; i += pagesize)
+ if (is_backed_by_folio(&pte_mapped[i], pmd_order, pagemap_fd, kpageflags_fd))
thp_size++;
if (thp_size != 4)
--
2.34.1
next reply other threads:[~2025-08-30 2:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-30 2:31 Wei Yang [this message]
2025-08-30 3:09 ` [PATCH] selftests/mm: directly add pagesize instead of increase until page size Andrew Morton
2025-08-30 7:46 ` Wei Yang
2025-08-31 1:32 ` Zi Yan
2025-08-31 2:17 ` Wei Yang
2025-09-01 9:32 ` David Hildenbrand
2025-09-01 12:51 ` Wei Yang
2025-09-01 12:54 ` David Hildenbrand
2025-09-01 13:05 ` David Hildenbrand
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