From patchwork Tue Nov 24 13:27:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11929057 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EB8B5C2D0E4 for ; Tue, 24 Nov 2020 13:41:26 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7C8C220782 for ; Tue, 24 Nov 2020 13:41:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="Dsx0SI5F" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7C8C220782 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.36240.68215 (Exim 4.92) (envelope-from ) id 1khYZF-0006d6-HN; Tue, 24 Nov 2020 13:41:13 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 36240.68215; Tue, 24 Nov 2020 13:41:13 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1khYZE-0006bl-ND; Tue, 24 Nov 2020 13:41:12 +0000 Received: by outflank-mailman (input) for mailman id 36240; Tue, 24 Nov 2020 13:41:07 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1khYPL-0000Qf-4n for xen-devel@lists.xenproject.org; Tue, 24 Nov 2020 13:30:59 +0000 Received: from casper.infradead.org (unknown [2001:8b0:10b:1236::1]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 70933921-7f94-4146-983c-78fd261550a0; Tue, 24 Nov 2020 13:29:00 +0000 (UTC) Received: from [2001:4bb8:180:5443:c70:4a89:bc61:3] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1khYN7-0006dU-9l; Tue, 24 Nov 2020 13:28:41 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1khYPL-0000Qf-4n for xen-devel@lists.xenproject.org; Tue, 24 Nov 2020 13:30:59 +0000 X-Inumbo-ID: 70933921-7f94-4146-983c-78fd261550a0 Received: from casper.infradead.org (unknown [2001:8b0:10b:1236::1]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 70933921-7f94-4146-983c-78fd261550a0; Tue, 24 Nov 2020 13:29:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=IQo7+3FqwGn+nveEvbMImUHejQ6B6iul3lBAGXRT6S0=; b=Dsx0SI5F7fK6yGFNHizYK2Luqs OwGWEA5YdR00VnJlh8sw0Mn6T+j7LB7jv8MhUDWibdIObFF6A/ZF43bZIWLBCgxRKYGFNUkJJ7lCX 9uBkrERnn2jWXDLuUpDe59yHT0uXNScCDoyaocQmmAzQjXpKlE4KAKPbpyUe8oYhjDaCLacF1DCg9 9yAbwO/HOM5BkHkFS4np8Nd9Fd6Or5Eb6xBaCRgf0KNMcbJFJUCb3s3f0OWWQOleSUCquZS1yGdOP AQYd9fB3rQkdijuOCSdOSZ4uOqYuxhOl5dj8wm8XxGDymP9DbEN9XvguCVt7lDx0KagQxCdhTuk1a i/kX79lg==; Received: from [2001:4bb8:180:5443:c70:4a89:bc61:3] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1khYN7-0006dU-9l; Tue, 24 Nov 2020 13:28:41 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Tejun Heo , Josef Bacik , Konrad Rzeszutek Wilk , Coly Li , Mike Snitzer , Greg Kroah-Hartman , Jan Kara , Johannes Thumshirn , dm-devel@redhat.com, Richard Weinberger , Jan Kara , linux-block@vger.kernel.org, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 28/45] block: simplify part_to_disk Date: Tue, 24 Nov 2020 14:27:34 +0100 Message-Id: <20201124132751.3747337-29-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201124132751.3747337-1-hch@lst.de> References: <20201124132751.3747337-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Now that struct hd_struct has a block_device pointer use that to find the disk. Signed-off-by: Christoph Hellwig Acked-by: Tejun Heo --- include/linux/genhd.h | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/include/linux/genhd.h b/include/linux/genhd.h index d068e46f9086ae..dcf86a3d4dedc4 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -219,13 +219,9 @@ struct gendisk { static inline struct gendisk *part_to_disk(struct hd_struct *part) { - if (likely(part)) { - if (part->partno) - return dev_to_disk(part_to_dev(part)->parent); - else - return dev_to_disk(part_to_dev(part)); - } - return NULL; + if (unlikely(!part)) + return NULL; + return part->bdev->bd_disk; } static inline int disk_max_parts(struct gendisk *disk)