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Fri, 1 May 2026 19:20:10 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.22.64.126]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 7971D1800345; Fri, 1 May 2026 19:20:07 +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, dave.hansen@linux.intel.com, djbw@kernel.org, vishal.l.verma@intel.com, dave.jiang@intel.com, akpm@linux-foundation.org, lorenzo.stoakes@oracle.com Subject: [PATCH v4 4/9] drivers: nvdimm: use pgtable_has_pmd_leaves() Date: Fri, 1 May 2026 15:18:46 -0400 Message-ID: <080c40bdcb145bc9162503a3e09144d444991770.1777663129.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: Fy8YYs3JS5vEAUwiEiX5ObBO3i92fHjFbCqsVaI0Tk4_1777663211 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: C6488180003 X-Stat-Signature: 7zh5aoyy98inx83n9c7hkusuy59ng4n4 X-Rspam-User: X-HE-Tag: 1777663217-176419 X-HE-Meta: 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 bp+/zP4N JyeA6FBOI3NAl4eixnWCORc56zkJBZ8cAp30UpnV/7Ba1TADVLHbhoxJMXujAPcAwGklxmo3g9XrLuKfagsnj/a0ZloFs3fjH3bF70wjwRxAtL9KzZ1VPSke2XbjMV6D9Y00mx5xEDhxbSgTUD6xE4pJTBvXRXXpcYHm4QRIP88HQ2swCKczGu7r4z3Uh8RILAzVOs3vSNNXlZztZR1afj/v8lI46R0+zXQ63om3YUr9eM1xFNIqybMTlPCRY9y8bXcHmox7xl4UbRWrV4RyaL+zcJeZ6sRxHvSniYr7FrKg2nvhu05LTdgVvGc5TS3w6tsYY+NA3BQUwZLmUBTanjC2Se29EaUPf5Hmfbz5IHkpS0Hh/ypktrtlec0LqGacmmQi47opEQaqf+1dkr2qAngKvNXyt6iX/iIH3 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; } -- 2.53.0