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Wed, 8 May 2024 10:13:26 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id X7RYE0ZQO2b1LQAAD6G6ig (envelope-from ); Wed, 08 May 2024 10:13:26 +0000 Date: Wed, 8 May 2024 12:13:24 +0200 From: Oscar Salvador To: Frank van der Linden Cc: linux-mm@kvack.org, muchun.song@linux.dev, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, Roman Gushchin Subject: Re: [PATCH] mm/hugetlb: align cma on allocation order, not demotion order Message-ID: References: <20240430161437.2100295-1-fvdl@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240430161437.2100295-1-fvdl@google.com> X-Rspamd-Server: rspam01 X-Stat-Signature: msb7xscty3pe7ohtf7n868qmusxxas6m X-Rspam-User: X-Rspamd-Queue-Id: 9C5824000C X-HE-Tag: 1715163208-671814 X-HE-Meta: U2FsdGVkX197/X+3+7Pkl7+vDv6GQvZgzeQwtqJHpMGNEq5fFcxZ3MyMU2glH91fLhFkSgeUIk/mxyJ98pSL+k4i9qOBR7LEAg26GGQ0wUVfw9VlglgKLFU4UcA9apujnIrpGhh53YmIUaVwISepVflDo8IpjKqxoBvN37FOqXzAO84dHuqU0u/c9TgRuieAyP1D8CXD+Ozs9HBK6TQAI79UNxKbINevMa5Ixv/0jT0D//akbGtI+AcswQ/oqjbHsxVrEEXnwBEE9a6Jv/UrZ8XWxc08yi4FjV2FCOO6EwOV+5YowU3yZEbI/yQbKDcXH9N9ynKV4Y9kENxFvnm/o1ZYvI05HcDc6AwzfhKLEbpkUYlu8KbtpaOOYa/HcBFWiIXwovrMPnstVGtgXTj2ZZuKvw+CcmZuMv4twkOxLRtRHG/81cdQ+ceUQQ9U8dFj+O69KJWdDJNTo484od6ySiPnffx9nWRcTXobUGShJWQCPDoJiM1rvydsR0BKsf1NWddRnm3dNB8gNPn7T5YZHfDpXptNa9U5sK4Av7/FdfEJktqDKpMbMTFJh2doh32v4PD9yQnjOUyUIFPSo0nYlsg2s/pJn45T9MatRGOtc48yc4+pZqaQJrD/nXRj4R3RjRTxKuALq1c5HwH2AAELjFhu6Vmw09xtuAbs18kzBrGAnFotpkND4fY4ODiKYB9bxIyuM+GArmsyHmsul/ry7UBaj28z8cDiv6x/w0ush3f+ls0Wowsi+t3UDl7GN+5yRY4GoUKekuWtMFMSETUDC2ldT8+Tz0GnV7Emf+vNYOvcwTClmEkvANyAyWtMHa3QMXhwrEG/G8EkrelfigOJVx9XRBmr0g90P8l0lAUdE+yERtlGVg4rW/vPZ55atj1+JELJ2eCX5ZymY3mM6C56AgDSZs6srOlaWJiH7QleBmrqCqdy6DZMqcwl6G4fEhzvqlQsRv9l3TaG8Zv1igB QCize5nI 8O6WoThI9pak0+v2hHDrD+vCE8olJqnvUbVBVU7X3Co6av0lKMaBTbWJEN3CeGkJnaWLOmU555Y34V+na+DIVrIAgTtBhapnylCWvfVBnxz5NG5zoG3FEGQxGLLvSCBERGwz0pIQMJ8RjYjWyEtWqCqC5OTQScsZzw99OLUpTphKQiMxEPkgjr3U/F7TkrdTHzFyqqkEWxzvJVFnR5LCJEeRMfXZZRfQbaxyK 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 Tue, Apr 30, 2024 at 04:14:37PM +0000, Frank van der Linden wrote: > Align the CMA area for hugetlb gigantic pages to their size, not the > size that they can be demoted to. Otherwise there might be misaligned > sections at the start and end of the CMA area that will never be used > for hugetlb page allocations. > > Signed-off-by: Frank van der Linden > Cc: Roman Gushchin > Fixes: a01f43901cfb ("hugetlb: be sure to free demoted CMA pages to CMA") Reviewed-by: Oscar Salvador -- Oscar Salvador SUSE Labs