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Wed, 8 Apr 2026 20:23:21 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.22.88.140]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 59F8B180036E; Wed, 8 Apr 2026 20:23:20 +0000 (UTC) From: Luiz Capitulino To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, david@kernel.org, baolin.wang@linux.alibaba.com Cc: ryan.roberts@arm.com, akpm@linux-foundation.org, lorenzo.stoakes@oracle.com Subject: [PATCH v3 04/10] drivers: nvdimm: use pgtable_has_pmd_leaves() Date: Wed, 8 Apr 2026 16:22:59 -0400 Message-ID: <0309be4a7133ba8d043380f0c3614af764f6e3c9.1775679721.git.luizcap@redhat.com> 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: wJj_e8fWDzEcH0jvErNnGG7W2WsX2gBan_9oBSU9ICk_1775679801 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 59A8B1C0009 X-Stat-Signature: 363c9mjrhbhs5mc8c4x3cxnqmsuebka3 X-Rspam-User: X-HE-Tag: 1775679906-497544 X-HE-Meta: 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 5T6OoIpG MDRws7Wkr5bbm8moLEHKYPnJvZVFH8xmb4DoD0xhDcgUm4BPAEeVS9MJPBUMDsnZQQSLOHzdWIt6f1bnsIX9J2pUL0Z55FiPYqBhX5wI9jrUxRuL/r9tVTc0bSNsb/eVcbxIuDBrK4bV4VR+Q9rNjpMC/E27rN4lFITWBkD3PxS9K6ONVPXzBfv02e9SMOhFdBhFnNdT7AKbNFoeDN7AcB/NbE7MknSabq7SZ3yEf5IejaLmYaFXDtjNUvggiUV0cVhmlaqhnlbW4XJUwaHRtpInlQtFNNiW7IqmlJDxQIRn2Uazb9X47eTnbp7KJDlMN9qelaG80pwdGbMMI51bDemOVS1hvdDGz0SAwZHjPpbPkBRttFhDMIDzqa6VHLWDbU/Wj 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. 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; } -- 2.53.0