From patchwork Tue Jul 4 12:56:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kara X-Patchwork-Id: 13301187 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99872C04A6A for ; Tue, 4 Jul 2023 12:57:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231513AbjGDM5I (ORCPT ); Tue, 4 Jul 2023 08:57:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56124 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231475AbjGDM5H (ORCPT ); Tue, 4 Jul 2023 08:57:07 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E45B510C1; Tue, 4 Jul 2023 05:57:04 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 9CCF92057B; Tue, 4 Jul 2023 12:57:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1688475423; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=4kLKXbH7Z9oxrfsS86756x47zmseM1dV/Y8LiCLoy6A=; b=1NsHtBQvituf76wxtJwfJBbL2Tzo1neIrOUsXVd3S4gmW62PKmJDF231W0tc14xolwuPTQ Q/HuMw8W/32xF4JmpitZqJk0TeLJ6jlCDSi0ivycTIGg3dwGsdiO4k44XsgBx3Fg3bYlSn C/sZrMAG3dSQHCO72pg5HUeOHXewkYQ= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1688475423; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=4kLKXbH7Z9oxrfsS86756x47zmseM1dV/Y8LiCLoy6A=; b=FLETSoCthEgeQYjbin9G95011rohTKnX2o6mkH6JhP2A286F4KRh1Q+LXhGE+3BIy5uddC Kx051bm0ZLvtXMAw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 88B0413A90; Tue, 4 Jul 2023 12:57:03 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id NBJ4IB8XpGRHQwAAMHmgww (envelope-from ); Tue, 04 Jul 2023 12:57:03 +0000 Received: by quack3.suse.cz (Postfix, from userid 1000) id E904DA0764; Tue, 4 Jul 2023 14:57:02 +0200 (CEST) From: Jan Kara To: Cc: , Christoph Hellwig , Christian Brauner , Jens Axboe , Kees Cook , Ted Tso , syzkaller , Alexander Popov , Eric Biggers , , linux-btrfs@vger.kernel.org, Dmitry Vyukov , Jan Kara Subject: [PATCH 2/6] fs: Block writes to mounted block devices Date: Tue, 4 Jul 2023 14:56:50 +0200 Message-Id: <20230704125702.23180-2-jack@suse.cz> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230704122727.17096-1-jack@suse.cz> References: <20230704122727.17096-1-jack@suse.cz> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=715; i=jack@suse.cz; h=from:subject; bh=1Lmzs2snC1snjsNOeiGEbZLZ2ocM2Sn53OgpAZM40yE=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBkpBcSptunr+jYP76j2WuFOQSZ56OM8jiAHFNFbohR DMY8nnuJATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCZKQXEgAKCRCcnaoHP2RA2VgkCA CSAv51n2YAI4cMP2AySqWYOtRvUd1mNEWdOBjXmqplGJ6E0ilAkvrBEuY3/0bkT800N2Y70fEzPV8d 972eCWgtPG4t0zrIp0eKqAdA95NzflI8nzL8ylZnXIFd87B7hDUZ1IxGknYqo016Cjd0o4ZSuWhSML xLp1MWi2gGIP9maISY8u/bJegw8z3vuuAIuEtkt39aFWpgEPtMMsYIsUKgf02GIkIxq2/nnVDOKNZA 4g71hSna1LDpgbYa6vWZrQF03EU/XdwjxzVzjULt3j5WWuiy8L9QjMvWarV7SpkZJcOv3Ui4/FQwKC uN8DvxVq4+4HkfACWePDePzMTNKi9V X-Developer-Key: i=jack@suse.cz; a=openpgp; fpr=93C6099A142276A28BBE35D815BC833443038D8C Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Ask block layer to block writes to block devices mounted by filesystems. Signed-off-by: Jan Kara --- include/linux/blkdev.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index ca467525e6e4..a1fb90f3887e 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1471,7 +1471,8 @@ struct blk_holder_ops { * as stored in sb->s_flags. */ #define sb_open_mode(flags) \ - (BLK_OPEN_READ | (((flags) & SB_RDONLY) ? 0 : BLK_OPEN_WRITE)) + (BLK_OPEN_READ | BLK_OPEN_BLOCK_WRITES | \ + (((flags) & SB_RDONLY) ? 0 : BLK_OPEN_WRITE)) struct bdev_handle { struct block_device *bdev;