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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 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; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Action: no action X-Rspamd-Queue-Id: 86BED8000C X-Stat-Signature: 1hoq38b57n4dc8ux731oysgqse43bn4m X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1717396464-493008 X-HE-Meta: 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 Rq4beK9z 5avPf1JstM6mYx2DijER2TN09qAPb1iLovVGqveQK9yCOtkEh6J844RDeW7fFkoC5X7eeXYkKkzeOUwkF0tqnIDeAgU9SFDDasKUTu8ekd5azgVjRJtVy22g3e4qqO2QDR9wDeyLgM3GWz6cRMGBZwit1n0gs3IfLfSmGya8WoLaKQvbiWwRDeCgXGLsUX1G7l9W8xEWFpcnSlmFliuQhirthoFrxS2DSTm+yfVNbCoBQsMkjydafdV9iIACmWluLkwwYLdlNTma/v4f54I5RnRggvI8Uv0rOzopNxpuXgNSo3UE9AZsS8qePxJsXGHy9lCY2iKFJYMu1QpOQxKYuzg7whEQDGvofYzlZtaPVeJym56jcUwNA5/xgZFSr9EHoGBjT+UBPQ+UjG+A= 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 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