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Fri, 29 Aug 2025 19:31:38 -0700 (PDT) Received: from localhost ([185.92.221.13]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-afefcc2bd8esm321428466b.85.2025.08.29.19.31.37 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Fri, 29 Aug 2025 19:31:38 -0700 (PDT) From: Wei Yang 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 Subject: [PATCH] selftests/mm: directly add pagesize instead of increase until page size Date: Sat, 30 Aug 2025 02:31:02 +0000 Message-Id: <20250830023102.14981-1-richard.weiyang@gmail.com> X-Mailer: git-send-email 2.11.0 X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 0DF8740002 X-Stat-Signature: rn4ksqq3t7jten1ix4m5mjrf1bus1xkc X-Rspam-User: X-HE-Tag: 1756521099-522766 X-HE-Meta: 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 z/oL4Oun 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 --- 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