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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id D7925EB64DC for ; Thu, 6 Jul 2023 14:55:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 54BC16B0071; Thu, 6 Jul 2023 10:55:44 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 4D3D28D0002; Thu, 6 Jul 2023 10:55:44 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 39BAF8D0001; Thu, 6 Jul 2023 10:55:44 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 256C56B0071 for ; Thu, 6 Jul 2023 10:55:44 -0400 (EDT) Received: from smtpin04.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 8AF8EC0C36 for ; Thu, 6 Jul 2023 14:55:43 +0000 (UTC) X-FDA: 80981486166.04.2F1EDCA Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf23.hostedemail.com (Postfix) with ESMTP id AB04914000F for ; Thu, 6 Jul 2023 14:55:40 +0000 (UTC) Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=zbagyQCh; spf=none (imf23.hostedemail.com: domain of BATV+3c95f280863011604c0c+7256+infradead.org+hch@bombadil.srs.infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=BATV+3c95f280863011604c0c+7256+infradead.org+hch@bombadil.srs.infradead.org; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1688655341; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=fhykVYOZkzlXT4yh75rGeCVJ3cPkDr5sjhaxZXHjD+c=; b=6e3CocXWhkFyjL65/4PCP6w1PwteGHDwlY9tWY/mQhBqrgPR3S4UQit/ue+B2WX48GPFyY QA6OcBcF8ke2nLWvt/trkThWlSv358SBU+5jjiABYoI2YwmlWzClnoARaqdbrLPbultRGD CxIyozEnhQ2NhKLcEtbl/d86l4jQins= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1688655341; a=rsa-sha256; cv=none; b=CX5oQUbIburNRV9nEcq9WEsfdXS3YoQ1DfqW+ODagf1+iKkUY9XM/kkbgioMug+zbzr/g0 iCgbNLSVo+vf4LU8QakX+wGbI5TrQPhkZkJHGVQPjdZj1pbnublFbPZPHDeCaAK+feEh2S rSdaJv7E4WBalEQo5y7wf9263j5bWtw= ARC-Authentication-Results: i=1; imf23.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=zbagyQCh; spf=none (imf23.hostedemail.com: domain of BATV+3c95f280863011604c0c+7256+infradead.org+hch@bombadil.srs.infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=BATV+3c95f280863011604c0c+7256+infradead.org+hch@bombadil.srs.infradead.org; dmarc=none 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 X-Rspamd-Queue-Id: AB04914000F X-Rspam-User: X-Stat-Signature: 9pbmzcoc5ct7s3q1oxxoncjxtnfofa3b X-Rspamd-Server: rspam03 X-HE-Tag: 1688655340-846871 X-HE-Meta: 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 9+ePfuZa 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 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 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.