From patchwork Mon Nov 16 14:57:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 325867 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=-12.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,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 57EB8C83024 for ; Mon, 16 Nov 2020 14:59:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 116A322263 for ; Mon, 16 Nov 2020 14:59:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="UeKPjR9H" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730788AbgKPO7D (ORCPT ); Mon, 16 Nov 2020 09:59:03 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49010 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730742AbgKPO66 (ORCPT ); Mon, 16 Nov 2020 09:58:58 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3DE5EC0613D1; Mon, 16 Nov 2020 06:58:58 -0800 (PST) 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=2smnVJT4M8MVl5MGvHMWtgKudyWqsSN/hT8JKVcTkcU=; b=UeKPjR9HaE3H/C6qkhiTe+Rocu 9ShxKNi2wYBSK1rbD5wbPkjZToEWHwpbA4XMmV+yrAvhrlb8waEumxcmLoo6UJpHzT0oVsedCaTNL vW0OMgcrFRZWuj9afM+tWViwsKJaqn/qJwmqXTkY1DXr3Udw+lcZ1Jmvd9j5+tvAB+GIbBJjsq0cu EaxCxhsT192EWhx+hhW0l/8Cx9tvBzSIb1ezyuiHE2R3FTysXBl34PHXfUeZshdFbbBjcZGRonRTx gq9eiawuSsc+VqdBITNC40hyduSCiehl7z2/Koo7uijrjtnSFRlmObRyTCoTBE1CTJke9v1CYf9cY zJjjwESg==; Received: from [2001:4bb8:180:6600:255b:7def:a93:4a09] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kefxt-0003sX-50; Mon, 16 Nov 2020 14:58:45 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Justin Sanders , Josef Bacik , Ilya Dryomov , Jack Wang , "Michael S. Tsirkin" , Jason Wang , Paolo Bonzini , Stefan Hajnoczi , Konrad Rzeszutek Wilk , =?utf-8?q?Roger_Pau_Monn=C3=A9?= , Minchan Kim , Mike Snitzer , Song Liu , "Martin K. Petersen" , dm-devel@redhat.com, linux-block@vger.kernel.org, drbd-dev@lists.linbit.com, nbd@other.debian.org, ceph-devel@vger.kernel.org, xen-devel@lists.xenproject.org, linux-raid@vger.kernel.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH 25/78] block: don't call into the driver for BLKFLSBUF Date: Mon, 16 Nov 2020 15:57:16 +0100 Message-Id: <20201116145809.410558-26-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201116145809.410558-1-hch@lst.de> References: <20201116145809.410558-1-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 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org BLKFLSBUF is entirely contained in the block core, and there is no good reason to give the driver a hook into processing it. Signed-off-by: Christoph Hellwig --- block/ioctl.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/block/ioctl.c b/block/ioctl.c index 3fbc382eb926d4..c6d8863f040945 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -369,15 +369,8 @@ static inline int is_unrecognized_ioctl(int ret) static int blkdev_flushbuf(struct block_device *bdev, fmode_t mode, unsigned cmd, unsigned long arg) { - int ret; - if (!capable(CAP_SYS_ADMIN)) return -EACCES; - - ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg); - if (!is_unrecognized_ioctl(ret)) - return ret; - fsync_bdev(bdev); invalidate_bdev(bdev); return 0;