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(p200300cbc707cb00cd6b7964cc7db0e6.dip0.t-ipconnect.de. [2003:cb:c707:cb00:cd6b:7964:cc7d:b0e6]) by smtp.gmail.com with ESMTPSA id i3sm36623wmd.30.2022.01.24.10.17.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 24 Jan 2022 10:17:04 -0800 (PST) Message-ID: <5f81c8a3-a07a-5651-b0d6-5082c5677e3d@redhat.com> Date: Mon, 24 Jan 2022 19:17:04 +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] mm: page_alloc: avoid merging non-fallbackable pageblocks with others. To: Zi Yan , Mel Gorman , linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Vlastimil Babka , Mike Rapoport , Andrew Morton References: <20220124175957.1261961-1-zi.yan@sent.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20220124175957.1261961-1-zi.yan@sent.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 Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=STGg+4NY; dmarc=pass (policy=none) header.from=redhat.com; spf=none (imf29.hostedemail.com: domain of david@redhat.com has no SPF policy when checking 170.10.129.124) smtp.mailfrom=david@redhat.com X-Stat-Signature: dax3xxscuo77guingpyp9y1ojomtbhwh X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 0C28B120005 X-HE-Tag: 1643048228-611370 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: On 24.01.22 18:59, Zi Yan wrote: > From: Zi Yan > > This is done in addition to MIGRATE_ISOLATE pageblock merge avoidance. > It prepares for the upcoming removal of the MAX_ORDER-1 alignment > requirement for CMA and alloc_contig_range(). > > MIGRARTE_HIGHATOMIC should not merge with other migratetypes like > MIGRATE_ISOLATE and MIGRARTE_CMA[1], so this commit prevents that too. > > Remove MIGRARTE_CMA and MIGRATE_ISOLATE from fallbacks list, since they > are never used. > > [1] https://lore.kernel.org/linux-mm/20211130100853.GP3366@techsingularity.net/ > > Signed-off-by: Zi Yan > Acked-by: Mel Gorman Acked-by: David Hildenbrand -- Thanks, David / dhildenb