From patchwork Tue Jun 6 07:39:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13268575 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 D36ADC7EE43 for ; Tue, 6 Jun 2023 07:42:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236511AbjFFHmQ (ORCPT ); Tue, 6 Jun 2023 03:42:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50454 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236559AbjFFHlN (ORCPT ); Tue, 6 Jun 2023 03:41:13 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CBCEF170A; Tue, 6 Jun 2023 00:40:51 -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=5ZtPhPdJKTDTdyqevIERvcb7Bzke9D31HMKtWNK3WW4=; b=gRieWKPuaV0j1+l/6EHokTx5AR fJ9iG0u7eEdZ5ITUuWzcaBMz7SazZpKbhBa8JWs/b+tQxBXGQ26jGp0n5bbvKSKYF5St4mWw5sV58 NlPGd7KTpiY6mMJokiOqvUgZy50O1OuiToUTVm8l8FoSesj1a/ux5roYKEsl1VC7TVNOUvdGJ1o0Z b2A3BXZqefT1Mhf+rZUKaNRFwL/QJGo5HBgUmNcRPexlVzC8k2oxr2OEfmLzJArfHrB4nE7BYfffj z11TYMzpABLahJEVJhYTAwiqRj+9PqeqZWhh+qjRE4h5dBVrJhOBgCrETXuloh+7mzgxZFcnmYnwI 7yDJisCA==; 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 1q6RIy-000ZEq-1z; Tue, 06 Jun 2023 07:40:37 +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 13/31] bcache: don't pass a stack address to blkdev_get_by_path Date: Tue, 6 Jun 2023 09:39:32 +0200 Message-Id: <20230606073950.225178-14-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 sb is just an on-stack pointer that can easily be reused by other calls. Switch to use the bcache-wide bcache_kobj instead as there is no need to claim per-bcache device anyway. Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke --- drivers/md/bcache/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 94b91c45c9e2a9..4a2aed047aec12 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -2560,7 +2560,7 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr, err = "failed to open device"; bdev = blkdev_get_by_path(strim(path), FMODE_READ|FMODE_WRITE|FMODE_EXCL, - sb, NULL); + bcache_kobj, NULL); if (IS_ERR(bdev)) { if (bdev == ERR_PTR(-EBUSY)) { dev_t dev;