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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 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 Authentication-Results: smtp-out1.suse.de; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=amNn2S+6; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=ew4JhEA5 X-Spamd-Result: default: False [-0.35 / 50.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; XM_UA_NO_VERSION(0.01)[]; TO_DN_SOME(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[suse.de:+]; MX_GOOD(-0.01)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; MID_RHS_MATCH_FROM(0.00)[]; BAYES_HAM(-0.05)[60.49%]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; DNSWL_BLOCKED(0.00)[2a07:de40:b281:104:10:150:64:97:from]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; RCPT_COUNT_TWELVE(0.00)[14]; DBL_BLOCKED_OPENRESOLVER(0.00)[infradead.org:email,suse.de:dkim,suse.de:email]; FUZZY_BLOCKED(0.00)[rspamd.com]; RCVD_TLS_ALL(0.00)[] X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Spam-Score: -0.35 X-Rspamd-Queue-Id: 33EA121AFD X-Spam-Level: X-Spam-Flag: NO X-Spamd-Bar: / 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