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Tue, 13 Feb 2024 12:03:49 +0000 (UTC) Received: from dovecot-director2.suse.de ([10.150.64.162]) by imap1.dmz-prg2.suse.org with ESMTPSA id qRFQIqVay2X+AgAAD6G6ig (envelope-from ); Tue, 13 Feb 2024 12:03:49 +0000 Message-ID: <30d805b3-4ee4-45ad-b619-b25fd0c5bb78@suse.de> Date: Tue, 13 Feb 2024 13:03:49 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC v2 01/14] fs: Allow fine-grained control of folio sizes Content-Language: en-US To: "Pankaj Raghav (Samsung)" , linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org Cc: mcgrof@kernel.org, gost.dev@samsung.com, akpm@linux-foundation.org, kbusch@kernel.org, djwong@kernel.org, chandan.babu@oracle.com, p.raghav@samsung.com, linux-kernel@vger.kernel.org, willy@infradead.org, linux-mm@kvack.org, david@fromorbit.com References: <20240213093713.1753368-1-kernel@pankajraghav.com> <20240213093713.1753368-2-kernel@pankajraghav.com> From: Hannes Reinecke In-Reply-To: <20240213093713.1753368-2-kernel@pankajraghav.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 6C40A80017 X-Stat-Signature: qzhc3qxmkd17kbggz5cww7zudekdwkst X-HE-Tag: 1707825831-36043 X-HE-Meta: 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 324WzGIX 7SUiLTTPhhmjZfQQMH63WQN3uGn7kI0fbf9QGW1LAUQYjSQjyeAcZPvhli6tVLDRzfobuf4btLg5uFlTpI50xuq8SaWbRgktz9r13CwajfEINNfvBGmsRRa8BbB0/CzKOZ42Qyr/1/zN6tHhXWwfOAxhMTUEcpCny8kZpiiGIMbvXsm27yIRCUoCZ6i+GlxAnPZJYZTQpwbOEJLlmxUgs1tO/yMPASrtCL4VVLr72r9MUMrCUwJEaAdvZil2DmGwQuO5nNAkgQMqmHF/1dIx/DCg+dlqpIDbymPYJ7zhoyGXyNopsB82C6q1bRimDc7adjm2Rn8nJUOjnvyfhxeqfuPEK0n5EpyRKszgc1LkRlArDOc152AUEvGMd9G69xe+ue1pkMcvdGXbcp4KKQD2MImY4Qc3Sbmo0rXYnTeI7ouPk1X4= 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 2/13/24 10:37, Pankaj Raghav (Samsung) wrote: > From: "Matthew Wilcox (Oracle)" > > Some filesystems want to be able to limit the maximum size of folios, > and some want to be able to ensure that folios are at least a certain > size. Add mapping_set_folio_orders() to allow this level of control. > The max folio order parameter is ignored and it is always set to > MAX_PAGECACHE_ORDER. > > Signed-off-by: Matthew Wilcox (Oracle) > Signed-off-by: Pankaj Raghav > Signed-off-by: Luis Chamberlain > --- > include/linux/pagemap.h | 92 ++++++++++++++++++++++++++++++++--------- > 1 file changed, 73 insertions(+), 19 deletions(-) > Reviewed-by: Hannes Reinecke Cheers, Hannes