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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 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: [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-Spam-Level: Authentication-Results: smtp-out1.suse.de; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=MBK5sIsS; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=vwK5ViTl X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Spamd-Result: default: False [-1.54 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; XM_UA_NO_VERSION(0.01)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; BAYES_HAM(-0.04)[59.09%]; MIME_GOOD(-0.10)[text/plain]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; NEURAL_HAM_LONG(-1.00)[-1.000]; DWL_DNSWL_BLOCKED(0.00)[suse.de:dkim]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; DKIM_TRACE(0.00)[suse.de:+]; MX_GOOD(-0.01)[]; RCPT_COUNT_TWELVE(0.00)[12]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:dkim,suse.de:email]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; NEURAL_HAM_SHORT(-0.20)[-1.000]; RCVD_TLS_ALL(0.00)[]; MID_RHS_MATCH_FROM(0.00)[] X-Spam-Score: -1.54 X-Rspamd-Queue-Id: C041133D2E X-Spam-Flag: NO 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