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(p200300cbc709b200f0075a2632e78ef5.dip0.t-ipconnect.de. [2003:cb:c709:b200:f007:5a26:32e7:8ef5]) by smtp.gmail.com with ESMTPSA id w22sm11682389wra.59.2022.01.31.02.42.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 31 Jan 2022 02:42:10 -0800 (PST) Message-ID: <4632dc1a-e561-f04e-421c-a770f9271bbd@redhat.com> Date: Mon, 31 Jan 2022 11:42:09 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.4.0 Subject: Re: [PATCH v1 2/2] drivers/base/memory: determine and store zone for single-zone memory blocks To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, Andrew Morton , "Rafael J. Wysocki" , Greg Kroah-Hartman , Michal Hocko , Oscar Salvador , Rafael Parra References: <20220128152620.168715-1-david@redhat.com> <20220128152620.168715-3-david@redhat.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20220128152620.168715-3-david@redhat.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 2BBBF100005 X-Stat-Signature: 4depwih6bk99khyy9iexo8dbeufwic3i Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=iC2DheMk; dmarc=pass (policy=none) header.from=redhat.com; spf=none (imf14.hostedemail.com: domain of david@redhat.com has no SPF policy when checking 170.10.133.124) smtp.mailfrom=david@redhat.com X-Rspam-User: nil X-HE-Tag: 1643625735-21366 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: > !IS_ALIGNED(start_pfn, pageblock_nr_pages) || > - !IS_ALIGNED(start_pfn + nr_pages, PAGES_PER_SECTION))) > + !IS_ALIGNED(start_pfn + nr_pages, PAGES_PER_SECTION) || > + page_zone(pfn_to_page(start_pfn)) != zone || > + page_zone(pfn_to_page(end_pfn - 1)) != zone)) I just realized that we have to do these sanity checks after our check for memory holes. -- Thanks, David / dhildenb