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 38B2BC433F5 for ; Fri, 10 Dec 2021 07:42:16 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4J9NCV5xN8z3cB0 for ; Fri, 10 Dec 2021 18:42:14 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.alibaba.com (client-ip=115.124.30.57; helo=out30-57.freemail.mail.aliyun.com; envelope-from=jefflexu@linux.alibaba.com; receiver=) Received: from out30-57.freemail.mail.aliyun.com (out30-57.freemail.mail.aliyun.com [115.124.30.57]) (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 4J9NCR2MG7z3c6Q for ; Fri, 10 Dec 2021 18:42:09 +1100 (AEDT) X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R201e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e01424; MF=jefflexu@linux.alibaba.com; NM=1; PH=DS; RN=12; SR=0; TI=SMTPD_---0V-8PLSf_1639121802; Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0V-8PLSf_1639121802) by smtp.aliyun-inc.com(127.0.0.1); Fri, 10 Dec 2021 15:36:43 +0800 From: Jeffle Xu To: dhowells@redhat.com, linux-cachefs@redhat.com, xiang@kernel.org, chao@kernel.org, linux-erofs@lists.ozlabs.org Subject: [RFC 19/19] erofs: support on demand read Date: Fri, 10 Dec 2021 15:36:19 +0800 Message-Id: <20211210073619.21667-20-jefflexu@linux.alibaba.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20211210073619.21667-1-jefflexu@linux.alibaba.com> References: <20211210073619.21667-1-jefflexu@linux.alibaba.com> 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: tao.peng@linux.alibaba.com, linux-kernel@vger.kernel.org, joseph.qi@linux.alibaba.com, bo.liu@linux.alibaba.com, linux-fsdevel@vger.kernel.org, eguan@linux.alibaba.com, gerry@linux.alibaba.com Errors-To: linux-erofs-bounces+linux-erofs=archiver.kernel.org@lists.ozlabs.org Sender: "Linux-erofs" Signed-off-by: Jeffle Xu --- fs/erofs/fscache.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c index c849d3a89520..3d254cf7a0e3 100644 --- a/fs/erofs/fscache.c +++ b/fs/erofs/fscache.c @@ -83,9 +83,15 @@ static void erofs_priv_cleanup(struct address_space *mapping, void *netfs_priv) { } +static void erofs_issue_op(struct netfs_read_subrequest *subreq) +{ + netfs_demand_read(subreq); +} + const struct netfs_read_request_ops erofs_req_ops = { .begin_cache_operation = erofs_begin_cache_operation, .cleanup = erofs_priv_cleanup, + .issue_op = erofs_issue_op, }; struct page *erofs_readpage_from_fscache(struct fscache_cookie *cookie, -- 2.27.0