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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4979BEB64DC for ; Thu, 6 Jul 2023 14:55:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233629AbjGFOzR (ORCPT ); Thu, 6 Jul 2023 10:55:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44218 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233622AbjGFOzO (ORCPT ); Thu, 6 Jul 2023 10:55:14 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 88DBCB9; Thu, 6 Jul 2023 07:54:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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=fhykVYOZkzlXT4yh75rGeCVJ3cPkDr5sjhaxZXHjD+c=; b=zbagyQChudyQPE2bMPZfTnWPir xEx+mIn+jmhXiSkClrK6vyYVxVucLdM5bush+XAhi1L8+RYYMWbrfI/PXNLKjNrWkvX1JuFMBGnvz hobfOtgzfc30tNgXDTW5f735BiGierSS2sw4A5BsLsjO+NIDmCJaoqnJvjB6GpO63lTBhPw1Ktdzv 09/JTSE1nHQ4VXLt2IEwE6yDDWWPLCfOggEtJrOTiDfYzQXVq9m9NhYrAKw8aQvc7GPBw2+8hQS8A 80c0RawRFeosEEQrvmZs9gRIzWZlEHNQkGLdtR04aftBqsNeChaMLjpw0CwixmzDs5mdRTNLsZohR 2STEGtcw==; Received: from hch by bombadil.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1qHQNf-001vuf-2T; Thu, 06 Jul 2023 14:54:51 +0000 Date: Thu, 6 Jul 2023 07:54:51 -0700 From: Christoph Hellwig To: Jan Kara Cc: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Alasdair Kergon , Andrew Morton , Anna Schumaker , Chao Yu , Christian Borntraeger , "Darrick J. Wong" , Dave Kleikamp , David Sterba , dm-devel@redhat.com, drbd-dev@lists.linbit.com, Gao Xiang , Jack Wang , Jaegeuk Kim , jfs-discussion@lists.sourceforge.net, Joern Engel , Joseph Qi , Kent Overstreet , linux-bcache@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-mm@kvack.org, linux-mtd@lists.infradead.org, linux-nfs@vger.kernel.org, linux-nilfs@vger.kernel.org, linux-nvme@lists.infradead.org, linux-pm@vger.kernel.org, linux-raid@vger.kernel.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-xfs@vger.kernel.org, "Md. Haris Iqbal" , Mike Snitzer , Minchan Kim , ocfs2-devel@oss.oracle.com, reiserfs-devel@vger.kernel.org, Sergey Senozhatsky , Song Liu , Sven Schnelle , target-devel@vger.kernel.org, Ted Tso , Trond Myklebust , xen-devel@lists.xenproject.org Subject: Re: [PATCH RFC 0/32] block: Make blkdev_get_by_*() return handle Message-ID: References: <20230629165206.383-1-jack@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230629165206.383-1-jack@suse.cz> 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-bcache@vger.kernel.org On Tue, Jul 04, 2023 at 02:21:27PM +0200, Jan Kara wrote: > Hello, > > this patch series implements the idea of blkdev_get_by_*() calls returning > bdev_handle which is then passed to blkdev_put() [1]. This makes the get > and put calls for bdevs more obviously matching and allows us to propagate > context from get to put without having to modify all the users (again!). > In particular I need to propagate used open flags to blkdev_put() to be able > count writeable opens and add support for blocking writes to mounted block > devices. I'll send that series separately. > > The series is based on Linus' tree as of yesterday + two bcache fixes which are > in the block tree. Patches have passed some basic testing, I plan to test more > users once we agree this is the right way to go. Can you post a link to a git branch for this and the follow up series? Especially with a fairly unstable base it's kinda hard to look at the result otherwise.