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 A6627C433FE for ; Wed, 9 Feb 2022 06:01:44 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4Jtq5M0Vptz3cJl for ; Wed, 9 Feb 2022 17:01:43 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.alibaba.com (client-ip=115.124.30.56; helo=out30-56.freemail.mail.aliyun.com; envelope-from=jefflexu@linux.alibaba.com; receiver=) Received: from out30-56.freemail.mail.aliyun.com (out30-56.freemail.mail.aliyun.com [115.124.30.56]) (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 4Jtq544LDQz3bPM for ; Wed, 9 Feb 2022 17:01:27 +1100 (AEDT) X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R921e4; 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=15; SR=0; TI=SMTPD_---0V3zaQSC_1644386479; Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0V3zaQSC_1644386479) by smtp.aliyun-inc.com(127.0.0.1); Wed, 09 Feb 2022 14:01:19 +0800 From: Jeffle Xu To: dhowells@redhat.com, linux-cachefs@redhat.com, xiang@kernel.org, chao@kernel.org, linux-erofs@lists.ozlabs.org Subject: [PATCH v3 08/22] erofs: add mode checking helper Date: Wed, 9 Feb 2022 14:00:54 +0800 Message-Id: <20220209060108.43051-9-jefflexu@linux.alibaba.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220209060108.43051-1-jefflexu@linux.alibaba.com> References: <20220209060108.43051-1-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: gregkh@linuxfoundation.org, willy@infradead.org, linux-kernel@vger.kernel.org, joseph.qi@linux.alibaba.com, linux-fsdevel@vger.kernel.org, gerry@linux.alibaba.com, torvalds@linux-foundation.org Errors-To: linux-erofs-bounces+linux-erofs=archiver.kernel.org@lists.ozlabs.org Sender: "Linux-erofs" Until then erofs is exactly blockdev based filesystem. In other using scenarios (e.g. container image), erofs needs to run upon files. This patch set is going to introduces a new nodev mode, in which erofs could be mounted from a bootstrap blob file containing complete erofs image. Add a helper checking which mode erofs works in. Signed-off-by: Jeffle Xu --- fs/erofs/internal.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index f9f94d63d40f..2b9337d385ce 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -161,6 +161,11 @@ struct erofs_sb_info { #define set_opt(opt, option) ((opt)->mount_opt |= EROFS_MOUNT_##option) #define test_opt(opt, option) ((opt)->mount_opt & EROFS_MOUNT_##option) +static inline bool erofs_bdev_mode(struct super_block *sb) +{ + return sb->s_bdev; +} + enum { EROFS_ZIP_CACHE_DISABLED, EROFS_ZIP_CACHE_READAHEAD, -- 2.27.0