From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 25882C433FE for ; Thu, 10 Nov 2022 07:40:40 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4N7DK31lvvz3cMl for ; Thu, 10 Nov 2022 18:40:39 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.alibaba.com (client-ip=115.124.30.42; helo=out30-42.freemail.mail.aliyun.com; envelope-from=jefflexu@linux.alibaba.com; receiver=) Received: from out30-42.freemail.mail.aliyun.com (out30-42.freemail.mail.aliyun.com [115.124.30.42]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4N7DJv4n1fz3cFc for ; Thu, 10 Nov 2022 18:40:29 +1100 (AEDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R561e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045168;MF=jefflexu@linux.alibaba.com;NM=1;PH=DS;RN=5;SR=0;TI=SMTPD_---0VURxxwo_1668066023; Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0VURxxwo_1668066023) by smtp.aliyun-inc.com; Thu, 10 Nov 2022 15:40:24 +0800 From: Jingbo Xu To: xiang@kernel.org, chao@kernel.org, linux-erofs@lists.ozlabs.org Subject: [PATCH] erofs: enable large folio in device-based mode Date: Thu, 10 Nov 2022 15:40:23 +0800 Message-Id: <20221110074023.8059-1-jefflexu@linux.alibaba.com> X-Mailer: git-send-email 2.19.1.6.gb485710b MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linux-erofs@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development of Linux EROFS file system List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: huyue2@coolpad.com, linux-kernel@vger.kernel.org Errors-To: linux-erofs-bounces+linux-erofs=archiver.kernel.org@lists.ozlabs.org Sender: "Linux-erofs" Enable large folio in device-based mode. Then the radahead routine will pass down large folio containing multiple pages. Enable this feature for non-compressed format for now, until the compression part supports large folio later. Signed-off-by: Jingbo Xu --- I have tested it under workload of Linux compiling. I know it's not a perfect workload testing this feature, because large folio is less likely hit in this case since source files are generally small. But I indeed observed large folios (e.g. 16 pages) by peeking readahead_count(rac) in erofs_readahead(). --- fs/erofs/inode.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c index ad2a82f2eb4c..e457b8a59ee7 100644 --- a/fs/erofs/inode.c +++ b/fs/erofs/inode.c @@ -295,6 +295,8 @@ static int erofs_fill_inode(struct inode *inode) goto out_unlock; } inode->i_mapping->a_ops = &erofs_raw_access_aops; + if (!erofs_is_fscache_mode(inode->i_sb)) + mapping_set_large_folios(inode->i_mapping); #ifdef CONFIG_EROFS_FS_ONDEMAND if (erofs_is_fscache_mode(inode->i_sb)) inode->i_mapping->a_ops = &erofs_fscache_access_aops; -- 2.19.1.6.gb485710b