From patchwork Wed Nov 1 17:43:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kara X-Patchwork-Id: 13442974 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 10E48C04A68 for ; Wed, 1 Nov 2023 17:43:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233957AbjKARnl (ORCPT ); Wed, 1 Nov 2023 13:43:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233960AbjKARnh (ORCPT ); Wed, 1 Nov 2023 13:43:37 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 54657111; Wed, 1 Nov 2023 10:43:28 -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-out1.suse.de (Postfix) with ESMTPS id B87B821A40; Wed, 1 Nov 2023 17:43:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1698860606; 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=z+7Wpp/E2EdiZofVxhh2+hzQImgeg1xdtRejCKkMdy0=; b=fZfUCUm4xM5dJrCz+vcQLBI5c2/W8KX6Ldl0KACQbef+PgyVMxVxZq6EJ+hQ3CGQiFuhbA IOhJv9/cpQxd9egVJxnj0Qom1eJW/IkVPuPgXvkk4dup6+Kpl+uyIaNgsUSV/tDVSXFcLA WzvudiTgSdGb6uqQF51MZgnEiAMeWag= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1698860606; 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=z+7Wpp/E2EdiZofVxhh2+hzQImgeg1xdtRejCKkMdy0=; b=IIiAq//S5YNMXLq/G4VScKDLNn9KndjS3FmVu8IYFB9R3YS00y0p7zCYYcaVJASuq0MtYH 93BdKwVQOc3I0ZBA== 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 AA76513A92; Wed, 1 Nov 2023 17:43:26 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id l2+ZKT6OQmUvYQAAMHmgww (envelope-from ); Wed, 01 Nov 2023 17:43:26 +0000 Received: by quack3.suse.cz (Postfix, from userid 1000) id EB968A07C3; Wed, 1 Nov 2023 18:43:25 +0100 (CET) From: Jan Kara To: Christian Brauner Cc: , , Jens Axboe , Christoph Hellwig , Kees Cook , syzkaller , Alexander Popov , , Dmitry Vyukov , Jan Kara , "Darrick J . Wong" Subject: [PATCH 6/7] xfs: Block writes to log device Date: Wed, 1 Nov 2023 18:43:11 +0100 Message-Id: <20231101174325.10596-6-jack@suse.cz> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20231101173542.23597-1-jack@suse.cz> References: <20231101173542.23597-1-jack@suse.cz> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=835; i=jack@suse.cz; h=from:subject; bh=0ohImTI7LWBrWprfMwJTEIQpEG4d+p/gxEPGWo26suU=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBlQo4vhDMGgCebAqMpWVpQbE0zs5AajPPDCxCP+6JG cQYw/H6JATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCZUKOLwAKCRCcnaoHP2RA2YEVCA DeHIHP2RD6bzLKIacMsYkpyVlZBCEV1xHudpKCL+HY3v7+/D2leHGekabtfj8pop2aBJ+vTGppmD7Z kQs2+mpgkW9xBzrE7NCJHi1JvgW+/48bivCd7iAh8uxRqMy797/nbqC3D7aPq4S54WNtcTqdo6PgUj 0ARxSXgu/hVWx772qTLM6pH8xcU9ay5s5YXpyA5F03lQk8IiXB0pKlIpDlBPEfMZVONnvrOHHamTIq /mzhCUB6oSYClZU5MNQWWHEiv1hxtbIwYKnFqtkmlvbpL05kY3Q04LIaet4cB4ggA4zxkHzII3RVad hI+FZpmAE5SThz0plXx+FmunZjadcJ X-Developer-Key: i=jack@suse.cz; a=openpgp; fpr=93C6099A142276A28BBE35D815BC833443038D8C Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org Ask block layer to not allow other writers to open block devices used for xfs log and realtime devices. Reviewed-by: Darrick J. Wong Signed-off-by: Jan Kara --- fs/xfs/xfs_super.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 84107d162e41..2f29a6810e6a 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -365,8 +365,9 @@ xfs_blkdev_get( { int error = 0; - *handlep = bdev_open_by_path(name, BLK_OPEN_READ | BLK_OPEN_WRITE, - mp->m_super, &fs_holder_ops); + *handlep = bdev_open_by_path(name, + BLK_OPEN_READ | BLK_OPEN_WRITE | BLK_OPEN_RESTRICT_WRITES, + mp->m_super, &fs_holder_ops); if (IS_ERR(*handlep)) { error = PTR_ERR(*handlep); *handlep = NULL;