From patchwork Tue Jun 6 07:39:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13268594 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 306FEC7EE39 for ; Tue, 6 Jun 2023 07:46:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234838AbjFFHqP (ORCPT ); Tue, 6 Jun 2023 03:46:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51212 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236530AbjFFHo0 (ORCPT ); Tue, 6 Jun 2023 03:44:26 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E18591703; Tue, 6 Jun 2023 00:41:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=RkaoGw7hxnY7p2Aj4jgl8vVIBxmKSkWEmvUol6CzrBM=; b=NLn6+h1KQ1XPhC8jPNSjuxiI/H d3m1qq+F+uiL75Nt82jjj6hyuacgFBd3QNUYV0sHDor2YZKT1Nxmg04qDVQhMYoevX0tImBwex4VG G+9KvCdLT6m6XXN86IZINhovZ63m0Zc8rws01Ky24GKB/HiugyBnBWZH+oaHS8Q0Idl5inxJoIfSU qi4TPJkaEIQeX6IPAScaGNPHjAr8/VFwUTGdvbJhjlV0CVdqGYYW6JpYO4BQJhreDe+7iuna18m0o /zWoaJMNLycrCXvHvH4YL57SJwMV3vBqiYawbb8oLQ1PPYa/zpRelkQw/bx0xJpawaod/0ZWKLQo4 IzSMFktA==; Received: from 2a02-8389-2341-5b80-39d3-4735-9a3c-88d8.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:39d3:4735:9a3c:88d8] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q6RJr-000aA8-0F; Tue, 06 Jun 2023 07:41:33 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Richard Weinberger , Josef Bacik , "Md. Haris Iqbal" , Jack Wang , Phillip Potter , Coly Li , Miquel Raynal , Vignesh Raghavendra , "Martin K. Petersen" , Chris Mason , David Sterba , Alexander Viro , Christian Brauner , "Rafael J. Wysocki" , Pavel Machek , dm-devel@redhat.com, linux-block@vger.kernel.org, linux-um@lists.infradead.org, linux-scsi@vger.kernel.org, linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org, linux-nvme@lists.infradead.org, linux-btrfs@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-nilfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH 30/31] block: store the holder in file->private_data Date: Tue, 6 Jun 2023 09:39:49 +0200 Message-Id: <20230606073950.225178-31-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230606073950.225178-1-hch@lst.de> References: <20230606073950.225178-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Store the file struct used as the holder in file->private_data as an indicator that this file descriptor was opened exclusively to remove the last use of FMODE_EXCL. Signed-off-by: Christoph Hellwig Acked-by: Christian Brauner Reviewed-by: Hannes Reinecke --- block/fops.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/block/fops.c b/block/fops.c index c40b9f978e3bc7..915e0ef7560993 100644 --- a/block/fops.c +++ b/block/fops.c @@ -478,7 +478,7 @@ blk_mode_t file_to_blk_mode(struct file *file) mode |= BLK_OPEN_READ; if (file->f_mode & FMODE_WRITE) mode |= BLK_OPEN_WRITE; - if (file->f_mode & FMODE_EXCL) + if (file->private_data) mode |= BLK_OPEN_EXCL; if ((file->f_flags & O_ACCMODE) == 3) mode |= BLK_OPEN_WRITE_IOCTL; @@ -501,12 +501,15 @@ static int blkdev_open(struct inode *inode, struct file *filp) filp->f_flags |= O_LARGEFILE; filp->f_mode |= FMODE_NOWAIT | FMODE_BUF_RASYNC; + /* + * Use the file private data to store the holder, file_to_blk_mode + * relies on this. + */ if (filp->f_flags & O_EXCL) - filp->f_mode |= FMODE_EXCL; + filp->private_data = filp; bdev = blkdev_get_by_dev(inode->i_rdev, file_to_blk_mode(filp), - (filp->f_mode & FMODE_EXCL) ? filp : NULL, - NULL); + filp->private_data, NULL); if (IS_ERR(bdev)) return PTR_ERR(bdev); @@ -517,8 +520,7 @@ static int blkdev_open(struct inode *inode, struct file *filp) static int blkdev_release(struct inode *inode, struct file *filp) { - blkdev_put(I_BDEV(filp->f_mapping->host), - (filp->f_mode & FMODE_EXCL) ? filp : NULL); + blkdev_put(I_BDEV(filp->f_mapping->host), filp->private_data); return 0; }