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Tue, 13 Feb 2024 15:03:07 +0000 (UTC) Received: from dovecot-director2.suse.de ([10.150.64.162]) by imap1.dmz-prg2.suse.org with ESMTPSA id AM5kNquEy2VlMwAAD6G6ig (envelope-from ); Tue, 13 Feb 2024 15:03:07 +0000 Message-ID: <6fc4adcd-c7a3-4ca3-b309-13b484e75d12@suse.de> Date: Tue, 13 Feb 2024 16:03:07 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC v2 09/14] mm: Support order-1 folios in the page cache 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> <20240213093713.1753368-10-kernel@pankajraghav.com> From: Hannes Reinecke In-Reply-To: <20240213093713.1753368-10-kernel@pankajraghav.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spamd-Bar: / X-Rspamd-Queue-Id: A362D180082 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: bb118zu9qgn7k9mt46ohnupasqpk7itd X-HE-Tag: 1707836589-178297 X-HE-Meta: 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 2GDuWsAw HkzLjJ/nlOwGT2btyMGhpv56CJbDIRY40j2C4WCE1bJGdxiGh9u1narYMAULqBTNDxONpjVaOZXwWDb3MFVXL1MtiPA3UotjmZk5VUi27/TTOL0ZE6UmQTMJgEjoug1FbQdn7YEZzs5ItFbe6I2o2gnnfIdZeR/Ixgrm5Gel9Fa8y3/2+zuJhMxXBeXsxwJA/CAdFJfbsL0j4k0KsjsKQlWnbZFd+dcasUYLHYnwVzKcMvdiJF8GXCpm0O7y4OHCD6MQIgEEDlt2l543jZINc+WLfCkjwfyOlZZ7CtJwX9KZ36Rv69OGSqqZYayNCnU3XqM2ndNu6Z4tAaDx2zzqrSIHwSLlFh0d9pOjAfRX2MNBPfMtqoDb9wSTzjy4wrSfZpjtGfxlLXHOMiQNejTWukmuM4X2bfdCVerrDrotQu9BurWU= 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)" > > Folios of order 1 have no space to store the deferred list. This is > not a problem for the page cache as file-backed folios are never > placed on the deferred list. All we need to do is prevent the core > MM from touching the deferred list for order 1 folios and remove the > code which prevented us from allocating order 1 folios. > > Link: https://lore.kernel.org/linux-mm/90344ea7-4eec-47ee-5996-0c22f42d6a6a@google.com/ > Signed-off-by: Matthew Wilcox (Oracle) > --- > include/linux/huge_mm.h | 7 +++++-- > mm/filemap.c | 2 -- > mm/huge_memory.c | 23 ++++++++++++++++++----- > mm/internal.h | 4 +--- > mm/readahead.c | 3 --- > 5 files changed, 24 insertions(+), 15 deletions(-) > Reviewed-by: Hannes Reinecke Cheers, Hannes