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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4E9B4CDB479 for ; Wed, 24 Jun 2026 14:06:05 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4glkHb70WVz2yVv; Thu, 25 Jun 2026 00:06:03 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=213.95.11.211 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1782309963; cv=none; b=Rp+edVgd+2NffW8VMZdyEfx9zCcuuBjuhribYcTiUh7sCY1rD+XFwxwNSFVWB9+gkkSUS0TkVdH6BVbiY23tQjCZXaDSLOim52DQBV23ym8WE8P1S7GIXbg1AGQQ5N7EWVmXLEVkYLEDDIWXq6bkjyDgJdlNQKLPTuxSclBQXZ4q4yGLnmbaj6J6tsdxg39nt+F3ra05q5aKn3K+gp4abNARrctHgVJRmUT9rvOMWaRvJjqLRmNq3z320tGkeCZYRSp87JtvTfApa+9xAKz460y94OcjPTpN+CvnqHvhp6QjGMM/aPPn242P84nCTuj08uXRveH4GUgEanjqpy3Vcw== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1782309963; c=relaxed/relaxed; bh=w5mvddVPYHkVPCT3UIzummcftFIgUwg/5BZvD4vnY7Y=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=biVeGcKT0fOqCqF/0mX1Xw42gy/oYHaAoC8Rg9S4LKAlasQ6xju6YY86eQwis0xsmJs8k6zHBuWT7brv6f2B/3hbH+UKAZrcspCs1S6OdkqTQ4xtxdQ78v/gFD85C8ls1lLt2alrzQYOiLG4mJynXD0w3MmxNeGCp6kNhc+ymxUuvg9uRZzOd+ui4fBVeIbMmk3jtDBwn/Lqv9Bzj4e24rxWwYSOvO03jgSTayuimyUg6fgj1dQ7/L0BxpanRbWZv1jkPaS9LG+zOEvC8hgggE1wMVo5zTsVaGPVDwMQ7wsJgyvJINsjbyrA+3ihB4e31GnA6dKWlzp+IIJi+6/9OQ== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=lst.de; spf=pass (client-ip=213.95.11.211; helo=verein.lst.de; envelope-from=hch@lst.de; receiver=lists.ozlabs.org) smtp.mailfrom=lst.de Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=lst.de Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lst.de (client-ip=213.95.11.211; helo=verein.lst.de; envelope-from=hch@lst.de; receiver=lists.ozlabs.org) Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4glkHb29Mzz2ySg for ; Thu, 25 Jun 2026 00:06:03 +1000 (AEST) Received: by verein.lst.de (Postfix, from userid 2407) id 127DD68B05; Wed, 24 Jun 2026 16:06:00 +0200 (CEST) Date: Wed, 24 Jun 2026 16:05:59 +0200 From: Christoph Hellwig To: Christian Brauner Cc: Jan Kara , Christoph Hellwig , Jens Axboe , Alexander Viro , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Carlos Maiolino , linux-xfs@vger.kernel.org, Chris Mason , David Sterba , linux-btrfs@vger.kernel.org, Theodore Ts'o , linux-ext4@vger.kernel.org, Gao Xiang , linux-erofs@lists.ozlabs.org Subject: Re: [PATCH RFC v2 07/18] fs: maintain a global device-to-superblock table Message-ID: <20260624140559.GB7692@lst.de> References: <20260616-work-super-bdev_holder_global-v2-0-7df6b864028e@kernel.org> <20260616-work-super-bdev_holder_global-v2-7-7df6b864028e@kernel.org> X-Mailing-List: linux-erofs@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260616-work-super-bdev_holder_global-v2-7-7df6b864028e@kernel.org> User-Agent: Mutt/1.5.17 (2007-11-01) FYI, I still think maintaining a dev_t to sb mapping vs having a holder register a claim is a major step backwards architecturally. I spent a lot of effort to get us out of this.