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Fri, 1 Mar 2024 17:08:06 +0000 (UTC) Received: from dovecot-director2.suse.de ([10.150.64.162]) by imap1.dmz-prg2.suse.org with ESMTPSA id g35fI3YL4mVwGQAAD6G6ig (envelope-from ); Fri, 01 Mar 2024 17:08:06 +0000 Message-ID: <1e789901-82a2-40db-b818-cc1c5b6e9ea5@suse.de> Date: Fri, 1 Mar 2024 18:08:05 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 01/13] mm: Support order-1 folios in the page cache Content-Language: en-US To: "Pankaj Raghav (Samsung)" , linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org Cc: djwong@kernel.org, mcgrof@kernel.org, linux-mm@kvack.org, david@fromorbit.com, akpm@linux-foundation.org, gost.dev@samsung.com, linux-kernel@vger.kernel.org, chandan.babu@oracle.com, willy@infradead.org References: <20240301164444.3799288-1-kernel@pankajraghav.com> <20240301164444.3799288-2-kernel@pankajraghav.com> From: Hannes Reinecke In-Reply-To: <20240301164444.3799288-2-kernel@pankajraghav.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 68A3240027 X-Rspam-User: X-Stat-Signature: 1ohjjmfe1q54q18856c5u9ntzcfbfng6 X-Rspamd-Server: rspam01 X-HE-Tag: 1709312889-508052 X-HE-Meta: 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 w056S2/I 7NMuC/DOTCI+ug1c7v/F1L8QNbKK2dFNs8uIN52If3YqQ+gTrDVjsanocViFa+vMNqha01mp8OeT6GmgAaAD5Qlcq8PMxutOBnokoKcU3WZ3eAjr+aL0QVc5N+lG5ruml607OahHDi1/ZtjamOaI2x3pBBg7scoutdL+p8DGmbnsT+3aDMD0Vd7+9q6qCkXvwcxZAOsdP1qu2p9Ty6gGUJ3ZcJh2bNU4YzmeN3LcUxZvMmYnuAuqLjqBLy9nYOR16LCanRRsmxtOXT8P4CcQyQkZMLh7Nf48uvHg5bdiOAAzTWRy3wR3lh1E1Z29M6tX7g6edNFx2uJh4oH8WZi6QyP7Kv9JAZVXyNYrLBin7tEboLi9DU53NxXboo0lO+5hGb/0PutJqHOsKCR0EAGL9dPULfVaJhESgoAEn62XxDof1iAqykgxEf0dAvRqrHUwbZ80/FXCll5RlCdZdMSNam9DWYsxrnK9XVpnijYJde9Mr01A= 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 3/1/24 17:44, 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 -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg HRB 36809 (AG Nürnberg), GF: I. Totev, A. McDonald, W. Knoblich