From patchwork Fri May 21 05:50:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12271909 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=-16.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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 28C0AC43460 for ; Fri, 21 May 2021 05:51:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0EB53613B4 for ; Fri, 21 May 2021 05:51:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234299AbhEUFxM (ORCPT ); Fri, 21 May 2021 01:53:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232090AbhEUFxJ (ORCPT ); Fri, 21 May 2021 01:53:09 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 51940C061574; Thu, 20 May 2021 22:51:47 -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=vrlb3gpQ3AYuNPBe0/RrPeHNlWaUD2yiPPU9OkXw7SA=; b=VQHH4gc8hGbhrYI2cy69ffXSDw oYi4GpD7bbQjpNMBTtJ8H9VWdXRHozJga5WXgc+9I+NN8vamOZmNK8lS+l0UT65h5rNf9NOpp13V1 4QW/UNF3EXrAbDo7ddmrGYPkPd1cSg4hFC+kF64Z5p75U6OB0xSvA0RA+NY/1GAY+F6pkw9zs//Sk zuR8KWVZ7sREZnzaV0cRQLytTYXotXfjDgYFhL8LG2gme3KttVFeM+XHyiptWcjFGI1D2zp5HtJUr ILl0ngtiAnyd8HBFksjcytYqjrZ5HvQXpfvczpCNHtsGFTbWzmCQdtltW/wUx6BwPF4Z59m7YLR10 v0V40Ilw==; Received: from [2001:4bb8:180:5add:4fd7:4137:d2f2:46e6] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1ljy4D-00Gpwy-OY; Fri, 21 May 2021 05:51:26 +0000 From: Christoph Hellwig To: Jens Axboe , Geert Uytterhoeven , Chris Zankel , Max Filippov , Philipp Reisner , Lars Ellenberg , Jim Paris , Joshua Morris , Philip Kelleher , Minchan Kim , Nitin Gupta , Matias Bjorling , Coly Li , Mike Snitzer , Song Liu , Maxim Levitsky , Alex Dubov , Ulf Hansson , Dan Williams , Vishal Verma , Dave Jiang , Heiko Carstens , Vasily Gorbik , Christian Borntraeger Cc: linux-block@vger.kernel.org, dm-devel@redhat.com, linux-m68k@lists.linux-m68k.org, linux-xtensa@linux-xtensa.org, drbd-dev@lists.linbit.com, linuxppc-dev@lists.ozlabs.org, linux-bcache@vger.kernel.org, linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-s390@vger.kernel.org Subject: [PATCH 02/26] block: move the DISK_MAX_PARTS sanity check into __device_add_disk Date: Fri, 21 May 2021 07:50:52 +0200 Message-Id: <20210521055116.1053587-3-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210521055116.1053587-1-hch@lst.de> References: <20210521055116.1053587-1-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-mmc@vger.kernel.org Keep this together with the first place that actually looks at ->minors and prepare for not passing a minors argument to alloc_disk. Signed-off-by: Christoph Hellwig Reviewed-by: Luis Chamberlain Reviewed-by: Hannes Reinecke --- block/genhd.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/block/genhd.c b/block/genhd.c index 2c00bc3261d9..7f9beaeede11 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -491,6 +491,12 @@ static void __device_add_disk(struct device *parent, struct gendisk *disk, */ if (disk->major) { WARN_ON(!disk->minors); + + if (disk->minors > DISK_MAX_PARTS) { + pr_err("block: can't allocate more than %d partitions\n", + DISK_MAX_PARTS); + disk->minors = DISK_MAX_PARTS; + } } else { WARN_ON(disk->minors); WARN_ON(!(disk->flags & (GENHD_FL_EXT_DEVT | GENHD_FL_HIDDEN))); @@ -1264,13 +1270,6 @@ struct gendisk *__alloc_disk_node(int minors, int node_id) { struct gendisk *disk; - if (minors > DISK_MAX_PARTS) { - printk(KERN_ERR - "block: can't allocate more than %d partitions\n", - DISK_MAX_PARTS); - minors = DISK_MAX_PARTS; - } - disk = kzalloc_node(sizeof(struct gendisk), GFP_KERNEL, node_id); if (!disk) return NULL;