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Thu, 12 Aug 2021 17:37:13 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap1.suse-dmz.suse.de with ESMTPSA id oC8/JUlcFWHoEQAAGKfGzw (envelope-from ); Thu, 12 Aug 2021 17:37:13 +0000 Subject: Re: [PATCH v14 087/138] mm/filemap: Convert mapping_get_entry to return a folio To: "Matthew Wilcox (Oracle)" , linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, Christoph Hellwig References: <20210715033704.692967-1-willy@infradead.org> <20210715033704.692967-88-willy@infradead.org> From: Vlastimil Babka Message-ID: Date: Thu, 12 Aug 2021 19:37:13 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <20210715033704.692967-88-willy@infradead.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: E39D71010443 Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=jsvWY403; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=YIp8Up3O; dmarc=none; spf=pass (imf12.hostedemail.com: domain of vbabka@suse.cz designates 195.135.220.28 as permitted sender) smtp.mailfrom=vbabka@suse.cz X-Rspamd-Server: rspam04 X-Stat-Signature: r5imm8q6h5kwmk968ix66g61m7mffu6g X-HE-Tag: 1628789834-4541 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: On 7/15/21 5:36 AM, Matthew Wilcox (Oracle) wrote: > The pagecache only contains folios, so indicate that this is definitely > not a tail page. Shrinks mapping_get_entry() by 56 bytes, but grows > pagecache_get_page() by 21 bytes as gcc makes slightly different hot/cold > code decisions. A net reduction of 35 bytes of text. > > Signed-off-by: Matthew Wilcox (Oracle) > Reviewed-by: Christoph Hellwig Acked-by: Vlastimil Babka