From patchwork Tue Jun 6 07:39:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 690795 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 BBC10C7EE2A for ; Tue, 6 Jun 2023 07:46:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236298AbjFFHqQ (ORCPT ); Tue, 6 Jun 2023 03:46:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50538 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236655AbjFFHnU (ORCPT ); Tue, 6 Jun 2023 03:43:20 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B6591BC0; Tue, 6 Jun 2023 00:41:39 -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=vLDKGJIN4sUAMcx+ss63SchZIFVZL96BaI3AvIUMzr4=; b=Kqz67xYl70ncmp7C+TTho2ZAwh yxMVvfTUe4ptMIvjyzv5W3/oGptcu3lODz1GZfs1Dzmfa07wbMjg2x6XNkhPoXVVT8TeEzZ5+vZ85 v1qggGnWqxY2bsFKIizZ6LsxrrrPNciu1JwJMH/tySvoqXcRfyJlv85UdaK+gMvOpcMhP0h4rkSzj dd9SWrGeDfCkJGWmtE8+Nh6i9voVwKacayAFzTn1gmxkmc1YJhF7r0Oan23F9ssgVCUQ9Cg3Op4+o gDpWg+ZYjjYuzSCNiQl39lt4KnyhQ9DBoM37xAlqu7P4qY4UvMmUgGNWibsjTk/rgEvj+LqaFZPLH vE5IjFEw==; 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 1q6RJX-000Zqu-1D; Tue, 06 Jun 2023 07:41:11 +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 24/31] rnbd-srv: replace sess->open_flags with a "bool readonly" Date: Tue, 6 Jun 2023 09:39:43 +0200 Message-Id: <20230606073950.225178-25-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-pm@vger.kernel.org Stop passing the fmode_t around and just use a simple bool to track if an export is read-only. Signed-off-by: Christoph Hellwig --- drivers/block/rnbd/rnbd-srv-sysfs.c | 3 +-- drivers/block/rnbd/rnbd-srv.c | 15 +++++++-------- drivers/block/rnbd/rnbd-srv.h | 2 +- 3 files changed, 9 insertions(+), 11 deletions(-) diff --git a/drivers/block/rnbd/rnbd-srv-sysfs.c b/drivers/block/rnbd/rnbd-srv-sysfs.c index d5d9267e1fa5e4..ebd95771c85ec7 100644 --- a/drivers/block/rnbd/rnbd-srv-sysfs.c +++ b/drivers/block/rnbd/rnbd-srv-sysfs.c @@ -88,8 +88,7 @@ static ssize_t read_only_show(struct kobject *kobj, struct kobj_attribute *attr, sess_dev = container_of(kobj, struct rnbd_srv_sess_dev, kobj); - return sysfs_emit(page, "%d\n", - !(sess_dev->open_flags & FMODE_WRITE)); + return sysfs_emit(page, "%d\n", sess_dev->readonly); } static struct kobj_attribute rnbd_srv_dev_session_ro_attr = diff --git a/drivers/block/rnbd/rnbd-srv.c b/drivers/block/rnbd/rnbd-srv.c index 29d560472d05ba..b680071342b898 100644 --- a/drivers/block/rnbd/rnbd-srv.c +++ b/drivers/block/rnbd/rnbd-srv.c @@ -222,7 +222,7 @@ void rnbd_destroy_sess_dev(struct rnbd_srv_sess_dev *sess_dev, bool keep_id) blkdev_put(sess_dev->bdev, NULL); mutex_lock(&sess_dev->dev->lock); list_del(&sess_dev->dev_list); - if (sess_dev->open_flags & FMODE_WRITE) + if (!sess_dev->readonly) sess_dev->dev->open_write_cnt--; mutex_unlock(&sess_dev->dev->lock); @@ -561,7 +561,7 @@ static void rnbd_srv_fill_msg_open_rsp(struct rnbd_msg_open_rsp *rsp, static struct rnbd_srv_sess_dev * rnbd_srv_create_set_sess_dev(struct rnbd_srv_session *srv_sess, const struct rnbd_msg_open *open_msg, - struct block_device *bdev, fmode_t open_flags, + struct block_device *bdev, bool readonly, struct rnbd_srv_dev *srv_dev) { struct rnbd_srv_sess_dev *sdev = rnbd_sess_dev_alloc(srv_sess); @@ -576,7 +576,7 @@ rnbd_srv_create_set_sess_dev(struct rnbd_srv_session *srv_sess, sdev->bdev = bdev; sdev->sess = srv_sess; sdev->dev = srv_dev; - sdev->open_flags = open_flags; + sdev->readonly = readonly; sdev->access_mode = open_msg->access_mode; return sdev; @@ -681,13 +681,12 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess, struct rnbd_srv_sess_dev *srv_sess_dev; const struct rnbd_msg_open *open_msg = msg; struct block_device *bdev; - fmode_t open_flags; + fmode_t open_flags = FMODE_READ; char *full_path; struct rnbd_msg_open_rsp *rsp = data; trace_process_msg_open(srv_sess, open_msg); - open_flags = FMODE_READ; if (open_msg->access_mode != RNBD_ACCESS_RO) open_flags |= FMODE_WRITE; @@ -736,9 +735,9 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess, goto blkdev_put; } - srv_sess_dev = rnbd_srv_create_set_sess_dev(srv_sess, open_msg, - bdev, open_flags, - srv_dev); + srv_sess_dev = rnbd_srv_create_set_sess_dev(srv_sess, open_msg, bdev, + open_msg->access_mode == RNBD_ACCESS_RO, + srv_dev); if (IS_ERR(srv_sess_dev)) { pr_err("Opening device '%s' on session %s failed, creating sess_dev failed, err: %ld\n", full_path, srv_sess->sessname, PTR_ERR(srv_sess_dev)); diff --git a/drivers/block/rnbd/rnbd-srv.h b/drivers/block/rnbd/rnbd-srv.h index f5962fd31d62e4..76077a9db3dd55 100644 --- a/drivers/block/rnbd/rnbd-srv.h +++ b/drivers/block/rnbd/rnbd-srv.h @@ -52,7 +52,7 @@ struct rnbd_srv_sess_dev { struct kobject kobj; u32 device_id; bool keep_id; - fmode_t open_flags; + bool readonly; struct kref kref; struct completion *destroy_comp; char pathname[NAME_MAX];