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[2003:d8:2f28:4900:2c24:4e20:1f21:9fbd]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-45611651008sm87611505e9.9.2025.07.15.08.55.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 15 Jul 2025 08:55:36 -0700 (PDT) Message-ID: Date: Tue, 15 Jul 2025 17:55:34 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v9 03/14] khugepaged: generalize hugepage_vma_revalidate for mTHP support To: Nico Pache , linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: ziy@nvidia.com, baolin.wang@linux.alibaba.com, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, ryan.roberts@arm.com, dev.jain@arm.com, corbet@lwn.net, rostedt@goodmis.org, mhiramat@kernel.org, mathieu.desnoyers@efficios.com, akpm@linux-foundation.org, baohua@kernel.org, willy@infradead.org, peterx@redhat.com, wangkefeng.wang@huawei.com, usamaarif642@gmail.com, sunnanyong@huawei.com, vishal.moola@gmail.com, thomas.hellstrom@linux.intel.com, yang@os.amperecomputing.com, kirill.shutemov@linux.intel.com, aarcange@redhat.com, raquini@redhat.com, anshuman.khandual@arm.com, catalin.marinas@arm.com, tiwai@suse.de, will@kernel.org, dave.hansen@linux.intel.com, jack@suse.cz, cl@gentwo.org, jglisse@google.com, surenb@google.com, zokeefe@google.com, hannes@cmpxchg.org, rientjes@google.com, mhocko@suse.com, rdunlap@infradead.org, hughd@google.com References: <20250714003207.113275-1-npache@redhat.com> <20250714003207.113275-4-npache@redhat.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20250714003207.113275-4-npache@redhat.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: 7kLjHoLWuGOottsmFZCGjM56rTbqr4F0t6NrM1l2Aew_1752594938 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: D91E740013 X-Rspamd-Server: rspam06 X-Stat-Signature: mjqx6wgowtsoh5rrxatn6wbw4prbxo68 X-HE-Tag: 1752594940-290760 X-HE-Meta: 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 Iv41tXn3 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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: On 14.07.25 02:31, Nico Pache wrote: > For khugepaged to support different mTHP orders, we must generalize this > to check if the PMD is not shared by another VMA and the order is enabled. > > To ensure madvise_collapse can support working on mTHP orders without the > PMD order enabled, we need to convert hugepage_vma_revalidate to take a > bitmap of orders. > > No functional change in this patch. > > Reviewed-by: Baolin Wang > Co-developed-by: Dev Jain > Signed-off-by: Dev Jain > Signed-off-by: Nico Pache > --- Acked-by: David Hildenbrand -- Cheers, David / dhildenb