From mboxrd@z Thu Jan 1 00:00:00 1970 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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 BCCE9C2BA19 for ; Wed, 15 Apr 2020 12:40:04 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7B5662074F for ; Wed, 15 Apr 2020 12:40:04 +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="YkgiKgPb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7B5662074F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id E47FC8E001A; Wed, 15 Apr 2020 08:40:03 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id DF80B8E0001; Wed, 15 Apr 2020 08:40:03 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CEFEE8E001A; Wed, 15 Apr 2020 08:40:03 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0229.hostedemail.com [216.40.44.229]) by kanga.kvack.org (Postfix) with ESMTP id B3C6F8E0001 for ; Wed, 15 Apr 2020 08:40:03 -0400 (EDT) Received: from smtpin18.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 708E4181AEF23 for ; Wed, 15 Apr 2020 12:40:03 +0000 (UTC) X-FDA: 76710046686.18.egg31_3aa9144113b46 X-HE-Tag: egg31_3aa9144113b46 X-Filterd-Recvd-Size: 3033 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf03.hostedemail.com (Postfix) with ESMTP for ; Wed, 15 Apr 2020 12:40:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=OpYwUgGG4Pb20qcOBAt9KPUOd70RO1ILur2iFtvmRqE=; b=YkgiKgPbP6RXmASVdUYPElgM1K wh7Q9Qd8VUh+tLGVrguFfnCnNMjrl6Gg7XisbTiLxn28tQ9Nafj2cL6wQwMFeWyjTX+6fBCH2TJo0 THcXpmVieX15bdY2SWWLDhR6NCNnH5TwkEPhKnenSkHvOHUp3JhUvfYyV1M3QbC5zyrFd/ul9mY74 f2Sp2AUuIVC7GsONZyhaMW7TxPElmmVZolhuNu4HjoL5n9ubLsaNxIouvLtgxg90T5x5trn277hnS 7RUzKq7oK4xcL1V6VYNqJgl2Fx8/YMwX6FraWQDMSaFx9ApXvXOPDoPfXTIO/NQ33YHpjaI7TJ0NU /bwLwcAg==; Received: from hch by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jOhK9-0003yq-Tg; Wed, 15 Apr 2020 12:39:25 +0000 Date: Wed, 15 Apr 2020 05:39:25 -0700 From: Christoph Hellwig To: Luis Chamberlain Cc: Christoph Hellwig , axboe@kernel.dk, viro@zeniv.linux.org.uk, bvanassche@acm.org, gregkh@linuxfoundation.org, rostedt@goodmis.org, mingo@redhat.com, jack@suse.cz, ming.lei@redhat.com, nstange@suse.de, akpm@linux-foundation.org, mhocko@suse.com, yukuai3@huawei.com, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Omar Sandoval , Hannes Reinecke , Michal Hocko Subject: Re: [PATCH 3/5] blktrace: refcount the request_queue during ioctl Message-ID: <20200415123925.GA14925@infradead.org> References: <20200414041902.16769-1-mcgrof@kernel.org> <20200414041902.16769-4-mcgrof@kernel.org> <20200414154044.GB25765@infradead.org> <20200415061649.GS11244@42.do-not-panic.com> <20200415071425.GA21099@infradead.org> <20200415123434.GU11244@42.do-not-panic.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200415123434.GU11244@42.do-not-panic.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Apr 15, 2020 at 12:34:34PM +0000, Luis Chamberlain wrote: > I'll pile up a fix. I've also considered doing a full review of callers > outside of the core block layer using it, and maybe just unexporting > this. It was originally exported due to commit d86e0e83b ("block: export > blk_{get,put}_queue()") to fix a scsi bug, but I can't find such > respective fix. I suspec that using bdgrab()/bdput() seems more likely > what drivers should be using. That would allow us to keep this > functionality internal. > > Think that's worthy review? Probably. I did in fact very quickly look into that but then gave up due to the fair amount of modular users.