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b=D5HwuqG8QbxGFpn9vFMdUXs0v6Ip+6S02HIMBWpOjP570u/2LccW+aRraxc3XHeqZ6WEK/ 8Dqy/lIqobxYQfDg== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 32B6113A93; Mon, 3 Jun 2024 06:34:22 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 8RsMCe5jXWbTSQAAD6G6ig (envelope-from ); Mon, 03 Jun 2024 06:34:22 +0000 Message-ID: <55610402-74c3-44fe-ac0d-37958f2f86b5@suse.de> Date: Mon, 3 Jun 2024 08:34:21 +0200 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 v6 05/11] mm: split a folio in minimum folio order chunks Content-Language: en-US To: "Pankaj Raghav (Samsung)" , david@fromorbit.com, chandan.babu@oracle.com, akpm@linux-foundation.org, brauner@kernel.org, willy@infradead.org, djwong@kernel.org Cc: linux-kernel@vger.kernel.org, john.g.garry@oracle.com, gost.dev@samsung.com, yang@os.amperecomputing.com, p.raghav@samsung.com, cl@os.amperecomputing.com, linux-xfs@vger.kernel.org, hch@lst.de, mcgrof@kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org References: <20240529134509.120826-1-kernel@pankajraghav.com> <20240529134509.120826-6-kernel@pankajraghav.com> From: Hannes Reinecke In-Reply-To: <20240529134509.120826-6-kernel@pankajraghav.com> Content-Type: text/plain; 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RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; MID_RHS_MATCH_FROM(0.00)[]; DKIM_TRACE(0.00)[suse.de:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:dkim,suse.de:email,samsung.com:email,imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns] On 5/29/24 15:45, Pankaj Raghav (Samsung) wrote: > From: Luis Chamberlain > > split_folio() and split_folio_to_list() assume order 0, to support > minorder we must expand these to check the folio mapping order and use > that. > > Set new_order to be at least minimum folio order if it is set in > split_huge_page_to_list() so that we can maintain minimum folio order > requirement in the page cache. > > Update the debugfs write files used for testing to ensure the order > is respected as well. We simply enforce the min order when a file > mapping is used. > > Signed-off-by: Luis Chamberlain > Signed-off-by: Pankaj Raghav > --- > include/linux/huge_mm.h | 14 ++++++++---- > mm/huge_memory.c | 50 ++++++++++++++++++++++++++++++++++++++--- > 2 files changed, 57 insertions(+), 7 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