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 5E76CC433EF for ; Fri, 10 Dec 2021 07:42:00 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4J9NCB6vdWz3cNW for ; Fri, 10 Dec 2021 18:41:58 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.alibaba.com (client-ip=115.124.30.54; helo=out30-54.freemail.mail.aliyun.com; envelope-from=jefflexu@linux.alibaba.com; receiver=) Received: from out30-54.freemail.mail.aliyun.com (out30-54.freemail.mail.aliyun.com [115.124.30.54]) (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 4J9NC357kzz2yng for ; Fri, 10 Dec 2021 18:41:51 +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=e01e04423; MF=jefflexu@linux.alibaba.com; NM=1; PH=DS; RN=12; SR=0; TI=SMTPD_---0V-8PLOr_1639121783; Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0V-8PLOr_1639121783) by smtp.aliyun-inc.com(127.0.0.1); Fri, 10 Dec 2021 15:36:24 +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 03/19] cachefiles: refactor cachefiles_adjust_size() Date: Fri, 10 Dec 2021 15:36:03 +0800 Message-Id: <20211210073619.21667-4-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" In demand-read mode, fs using fscache for demand-read doesn't know the exact file size of the data blob file, and the input @object_size parameter of fscache_acquire_cookie() could be fake in this case. Signed-off-by: Jeffle Xu --- fs/cachefiles/interface.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/cachefiles/interface.c b/fs/cachefiles/interface.c index 51c968cd00a6..b85051250cb7 100644 --- a/fs/cachefiles/interface.c +++ b/fs/cachefiles/interface.c @@ -110,6 +110,7 @@ static int cachefiles_adjust_size(struct cachefiles_object *object) { struct iattr newattrs; struct file *file = object->file; + struct cachefiles_cache *cache = object->volume->cache; uint64_t ni_size; loff_t oi_size; int ret; @@ -123,6 +124,9 @@ static int cachefiles_adjust_size(struct cachefiles_object *object) if (!file) return -ENOBUFS; + if (cache->mode == CACHEFILES_MODE_DEMAND) + return 0; + oi_size = i_size_read(file_inode(file)); if (oi_size == ni_size) return 0; -- 2.27.0