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Tue, 1 Sep 2026 03:13:01 +0000 (UTC) Received: from fedora.redhat.corp (headnet05.pony-001.prod.iad2.dc.redhat.com [10.2.32.117]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id B33DF18005B7; Tue, 1 Sep 2026 03:12:57 +0000 (UTC) From: Luiz Capitulino To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, david@kernel.org, baolin.wang@linux.alibaba.com, ziy@nvidia.com, lance.yang@linux.dev Cc: corbet@lwn.net, tsbogend@alpha.franken.de, maddy@linux.ibm.com, mpe@ellerman.id.au, agordeev@linux.ibm.com, gerald.schaefer@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, x86@kernel.org, tglx@kernel.org, mingo@redhat.com, bp@alien8.de, hughd@google.com, dave.hansen@linux.intel.com, djbw@kernel.org, vishal.l.verma@intel.com, dave.jiang@intel.com, akpm@linux-foundation.org, yintirui@huawei.com, dev.jain@arm.com, usama.arif@linux.dev Subject: [PATCH v7 05/14] drivers: nvdimm: use pgtable_has_pmd_leaves() Date: Mon, 31 Aug 2026 23:12:09 -0400 Message-ID: In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 X-Mimecast-MFC-PROC-ID: _xSyYTL1yhQNsFyzplXqe0VmetJq8ldJA0sTq9E7Sus_1788232382 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true X-Stat-Signature: umg1oyuxf5h6ubzcajhqasn5imiujs8r X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 8140AC0004 X-Rspam-User: X-HE-Tag: 1788232389-354242 X-HE-Meta: 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 6ZnuwBka 0mQmccEcEMw192ztLcu3H/82aTvMW9eWiG/xgQ493wtxEfwS5aEr8l3SPRv5P/gxYvul/x6DhP7nAAAcpb5y3BpUuBZXjOGeGxkqmuZThTvNq9sM6bToqsLHxQZnvhG5xeP7YWjbw1wq7R6c63/gVHKIo6VaDDIGOUomS3yONn5jFGdJOdRtJRXsSsQv5y0Vg7Pju4k8C6PZVhoq0OFrEt46b/vZejFJ5ublUs9ASdiRHtQ4wmvTixYWDiRoqhAjXM4RcmxLteOChyDl0oMcMScRR+I3YU0baUQ4/ww05lP4VzdubBEkih77qxo8m29XQeVpiMcilJyYQIblHjvJBBdmLSfc8IepM8hr/O019wD0YCEpHZmQwMARENTtoK0rY50yGf0P5j6xX4mAKpGUHSf+RllmKNEmIi83D Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: nd_pfn_supported_alignments() and nd_pfn_default_alignment() use has_transparent_hugepage() to check if THP is supported with PMD-sized pages. Use pgtable_has_pmd_leaves() instead. Also, check for IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) to preserve the current implementation semantics. Acked-by: Zi Yan Signed-off-by: Luiz Capitulino --- drivers/nvdimm/pfn_devs.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c index 8fa9c16aba7e..457eb54e7ab6 100644 --- a/drivers/nvdimm/pfn_devs.c +++ b/drivers/nvdimm/pfn_devs.c @@ -94,7 +94,8 @@ static unsigned long *nd_pfn_supported_alignments(unsigned long *alignments) alignments[0] = PAGE_SIZE; - if (has_transparent_hugepage()) { + if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && + pgtable_has_pmd_leaves()) { alignments[1] = HPAGE_PMD_SIZE; if (has_transparent_pud_hugepage()) alignments[2] = HPAGE_PUD_SIZE; @@ -109,7 +110,8 @@ static unsigned long *nd_pfn_supported_alignments(unsigned long *alignments) static unsigned long nd_pfn_default_alignment(void) { - if (has_transparent_hugepage()) + if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && + pgtable_has_pmd_leaves()) return HPAGE_PMD_SIZE; return PAGE_SIZE; } -- 2.55.0