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Sun, 01 Nov 2026 07:18:36 +0000 X-Mizu-Trace-ID: d3aa89a8db00bc1d X-Migadu-Flow: FLOW_OUT Message-ID: Date: Sun, 1 Nov 2026 15:18:28 +0800 X-Archived-By: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 12/12] mm: hugetlb_vmemmap: make vmemmap PTE conversion folio-oriented To: Muchun Song , Oscar Salvador , Andrew Morton , Mike Rapoport Cc: Lance Yang , James Houghton , David Hildenbrand , Muchun Song , linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20261020115306.813483-1-songmuchun@bytedance.com> <20261020115824.823278-1-songmuchun@bytedance.com> <20261020115824.823278-11-songmuchun@bytedance.com> From: Qi Zheng In-Reply-To: <20261020115824.823278-11-songmuchun@bytedance.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: 6E97A120006 X-Stat-Signature: 519cw8x3mmf46p7eduw4ktfeeq6xdwit X-Rspamd-Server: rspam01 X-Spam-Status: No, score=-17.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_PASS, SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=4.0.1 X-HE-Tag: 1793517518-192722 X-HE-Meta: U2FsdGVkX1/9IEsafU5mdYK8NErATC2sLah+oj7AeLRaXoIJCJzmjPlpEObTp7zB7TVEdczxiAE/+rgtb3J4QjzJwMPTaLxqFfriTnYIMWrPfWIYoRwBhtttoxzv1EA/zPRjAtwsC5w/ApwNMAvH4wZ5LBf5RKUhrqFbdxSRR4rwwm2TqbwY8i/H59t81oy31hf3gRl63RutNyj0DozpW/JT98S3DS9yT+D1Kvh1sSVuBZzjUJS2GCVjfsLHTfAFg/sdwocvkgXvp77gsz5SsMeezYVIrJrLcgk3zdXuO6WBrC7oYx4Gx/1qstBK8jG8LddWGbEtSQljDnA5K1oN5WtYSCnRyjg2MrlLJ81IK6YPtgw9jPP0X81B2wDQnViXg01l3++4A75Y762noCy8FdcB7glumFzVyXqGAayi2kPJ94XpLBNEOTBJy+Hj51ZtHBBajuZdMBgAE0KU4psDZBwGq8KttFqOxxz7fIvFAjOaBbPERnEbvSaNBl4DU9vve1ox7cvAp9RNf8WWrLTbA9BFR8w1D7hAxVyFXCy4lsjUv4yXQFT7sRLY5B6Xexa7kKkwLpKKUd7ThQ5zinNnwnf1skK/J7qKGk2vOg8PLBVzWRYdUnK4h9R4+hVdT4IJ32gzgzgd9MLzExouCDWglXAhdXVE4lF0N5lC5q2OfSXJ1OpUdxeBlD+AQ2flwW1vifgHZlBi0jRk23UxPhXU6ACKqJW7chHGsM+0ZQlbkzus0HA28ay+ws2LPO26kJZpPgN2la6h+Nq+mvpQMx//+asdJa8o+wJcEHsdH5+lYDr856zbk5HiVRJsAYsXNV0xrK1czGuu4CuFJ4ifuaEPK1N0+ZOlle9blybSWBnKK3YT2P+VMf9AxdD9WkNthN041HCtj4/Mnod8upAkyFIZgbeGyvaGSDsdKCEb70+Ls7f7JXk84TQflTMUpybwM/SugX8FKd5xjqqneCTcbWy OEhjM3a2 T5Gv5/AoscP4Akxp/Zp3rBIUxBFZT9GMVNXrfsbXM8U+qBMNm9/f0R5CXPMJxOkaW2UAjoYL/bkA3c+VYrcIOkleJImavL2kDObW+LsQbsmAfFMXlEKj8AEm9GclR9cjGNDFzNbcHBWaQLroKSqYIhgOvZQBAUougmEYYviPKXjN5QHUcpDEga24Bk3PJCO0ttnUqbZr4Gt4VMeBBKM0dqrYY+MzOXnEux93XRCkAHO2OUV1IGUiAMBQETmbgl9v5MipHcXdY3Y/ai+6IebAnii0QHVzcxg+jdogCtLuYkyMolKndGvVMel4pRxmo3emBqd1j7OgpjROmOfP6nDb+ZF/fhA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On 10/20/26 7:58 PM, Muchun Song wrote: > Converting a folio's vmemmap mappings from PMDs to PTEs is a per-folio > operation, but the current interface exposes a raw address range and > hardcodes deferred TLB flushing. This splits the common mechanism > across layers and couples it to the HugeTLB batching policy. > > Make the folio the unit of PTE conversion and let callers select the TLB > flush policy through the folio-oriented interface. This keeps > HugeTLB-specific eligibility and batching outside the common operation. > > No functional change intended. > > Signed-off-by: Muchun Song > --- > mm/hugetlb_vmemmap.c | 40 +++++++++++++++++++--------------------- > 1 file changed, 19 insertions(+), 21 deletions(-) > Reviewed-by: Qi Zheng Thanks, Qi