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b=BytB/PsA15A22qLvkEqBVfAp4QcnzeKFLDBi7fkmfannoo6giAGaTtI7wFhywXRoRurOHrBvlU3GhqI0G/ST3unzPtDF/v9cX3HY6eCa/CXwfWWPUGjTEzP96tzEGP+R7/TcRq8d08GgXMbUe1FwMubTWUJ3ilQBcFV3kjYA/y4= Received: from 30.74.144.118(mailfrom:baolin.wang@linux.alibaba.com fp:SMTPD_---0WzqmKHv_1772096217 cluster:ay36) by smtp.aliyun-inc.com; Thu, 26 Feb 2026 16:56:59 +0800 Message-ID: <9038265b-7066-4fcd-9b41-fa7ad6c5a07c@linux.alibaba.com> Date: Thu, 26 Feb 2026 16:56:57 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH mm-unstable v2 3/5] mm/khugepaged: define COLLAPSE_MAX_PTES_LIMIT as HPAGE_PMD_NR - 1 To: Nico Pache , linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: aarcange@redhat.com, akpm@linux-foundation.org, anshuman.khandual@arm.com, apopple@nvidia.com, baohua@kernel.org, byungchul@sk.com, catalin.marinas@arm.com, cl@gentwo.org, corbet@lwn.net, dave.hansen@linux.intel.com, david@kernel.org, dev.jain@arm.com, gourry@gourry.net, hannes@cmpxchg.org, hughd@google.com, jackmanb@google.com, jack@suse.cz, jannh@google.com, jglisse@google.com, joshua.hahnjy@gmail.com, kas@kernel.org, lance.yang@linux.dev, Liam.Howlett@oracle.com, lorenzo.stoakes@oracle.com, mathieu.desnoyers@efficios.com, matthew.brost@intel.com, mhiramat@kernel.org, mhocko@suse.com, peterx@redhat.com, pfalcato@suse.de, rakie.kim@sk.com, raquini@redhat.com, rdunlap@infradead.org, richard.weiyang@gmail.com, rientjes@google.com, rostedt@goodmis.org, rppt@kernel.org, ryan.roberts@arm.com, shivankg@amd.com, sunnanyong@huawei.com, surenb@google.com, thomas.hellstrom@linux.intel.com, tiwai@suse.de, usamaarif642@gmail.com, vbabka@suse.cz, vishal.moola@gmail.com, wangkefeng.wang@huawei.com, will@kernel.org, willy@infradead.org, yang@os.amperecomputing.com, ying.huang@linux.alibaba.com, ziy@nvidia.com, zokeefe@google.com References: <20260226012929.169479-1-npache@redhat.com> <20260226012929.169479-4-npache@redhat.com> From: Baolin Wang In-Reply-To: <20260226012929.169479-4-npache@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Stat-Signature: 9cqm8yjtayak5chbqjxdr144wwk6w9h1 X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: C1A67C0005 X-HE-Tag: 1772096226-923839 X-HE-Meta: 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 XorcXmjd i0c1iPpTFsKGgDSjegMwY/IlKKekPJ2t35ZFU+GPru2AX4L5zDAc/WI6Jdf4jN9dctUVboTS7cg1iJyeUxKxoLBr5J4LyawNQXcjl42BWxh0K3v8pbxd5xBrPWddiISGAFUDHa86REEqVSYBuD+u08xy/OAtpvFQkwPKrfJDYXRWuV2g06LhWfzT6XnPNI6/m0lyhy7ArqHdWfIyLwoqqUEDG8Z9E43ZhTjIx9bsVH6UX5f7pklkUZbv7k8jxVCqsfH46kPPI8LOlLfk/hgv0nGO8U9u4wNQAbwRjrBeNItxQVc/OEzCa1GoxogwDiLqyuti4NG1fGqziE7thwiU2+AxCPHppCMtzshSZ9RF8cC2zK4YXKU/FGq5MvgSfDYhL5MXzS8RlQYR3gmqbyHd12LbofU+ccY0KMuqG792sCX529/tejrbp3a2+Ti6LccN/6h29bbT42ALH2SG9m7loVdIcXg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 2/26/26 9:29 AM, Nico Pache wrote: > The value (HPAGE_PMD_NR - 1) is used often in the khugepaged code to > signify the limit of the max_ptes_* values. Add a define for this to > increase code readability and reuse. > > Acked-by: Pedro Falcato > Reviewed-by: Zi Yan > Signed-off-by: Nico Pache > --- Reviewed-by: Baolin Wang