From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BA1423033CF; Fri, 17 Apr 2026 08:04:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776413094; cv=none; b=hVF9DP7rXiijxgXs1/iePRnQ21kMiP4L39t0KHFjU0CSXL6j0+mjZ+NIxt3z/45Hm1CTYLj3gGFwUzVUiN5hTm/GOBL0kBSKlqpcR0tYoYOslybwj/N3gNhcgjvOygakKZBgtdi0V37/BpZSXp/Dsqo6razQ/IctPB+IiCAa7Rw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776413094; c=relaxed/simple; bh=Z1/9pPNfUbG+2/KcKKt8WrOWINsx2g4XRefFSdIht+4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=YUbnlvf4o+h+AcSwTs+pZV+L2SRqQFEIaM9WG//4mWb/mKxZ54i6WT7dXsEc5oCkuRAea9k6S4dviVdMbbBRr+6mwWd8b7YpFsqEGvHbj41MqY2Id4fvyNkqK9UI1DqLdDeGtUS+bKpe4uO/AHEGLC/9Jg9H8R92SFHoNKqI/nw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=T87ww8kT; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="T87ww8kT" 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=iq953/W1fH4+ePeN3WVL9mT3UeuaUrsvH971+8ptC2o=; b=T87ww8kTWwqx+U9QSTfTTqRRqZ RxojXMb7XwOyEEKKGOkXGtQNspCDywrnPZkZvxdVjytiJ2Ot6juHDPLznayKXy6OvXf9CAWS70srF nOqZbeb7N35lcHqP3v1ZJgyVerqGiYnYekgL9XP8WpxkSzA5RgtVtVIvCiw1k4UKq2NjnMCnazBz1 oePh2DcpFxB0JnQ07QvWUHbBbf/ArmV99Ejom7HyOPRfD16PjWULAG81oyrtYedrW4EXxaQM8pfHt hn8wiHwZHbkhBpbdmUAP+ZW5LXy7q7DwcJ2lcNqMtvCcrZsXVgNvkrD7dfytayeaFdG5BXf4JJntW nwkx7/ag==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1wDeBi-00000003eCj-42fO; Fri, 17 Apr 2026 08:04:30 +0000 Date: Fri, 17 Apr 2026 01:04:30 -0700 From: Christoph Hellwig To: Miklos Szeredi Cc: Joanne Koong , John Groves , Bernd Schubert , John Groves , Dan Williams , Bernd Schubert , Alison Schofield , John Groves , Jonathan Corbet , Shuah Khan , Vishal Verma , Dave Jiang , Matthew Wilcox , Jan Kara , Alexander Viro , David Hildenbrand , Christian Brauner , "Darrick J . Wong" , Randy Dunlap , Jeff Layton , Amir Goldstein , Jonathan Cameron , Stefan Hajnoczi , Josef Bacik , Bagas Sanjaya , Chen Linxuan , James Morse , Fuad Tabba , Sean Christopherson , Shivank Garg , Ackerley Tng , Gregory Price , Aravind Ramesh , Ajay Joshi , "venkataravis@micron.com" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "nvdimm@lists.linux.dev" , "linux-cxl@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , djbw@kernel.org Subject: Re: [PATCH V10 00/10] famfs: port into fuse Message-ID: References: <20260331123702.35052-1-john@jagalactic.com> <0100019d43e5f632-f5862a3e-361c-4b54-a9a6-96c242a8f17a-000000@email.amazonses.com> <38744253-efa3-41c5-a491-b177a4a4c835@bsbernd.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html This is the first mail without annoying and pointless full quotes, so chiming in here. Sorry if I missed something important in all the noise. On Tue, Apr 14, 2026 at 03:19:36PM +0200, Miklos Szeredi wrote: > On Fri, 10 Apr 2026 at 21:44, Joanne Koong wrote: > > > Overall, my intention with bringing this up is just to make sure we're > > at least aware of this alternative before anything is merged and > > permanent. If Miklos and you think we should land this series, then > > I'm on board with that. > > TBH, I'd prefer not to add the famfs specific mapping interface if not > absolutely necessary. Yes, fuse needing support for a specific file systems sounds like a design mistake. >This was the main sticking point originally, > but there seemed to be no better alternative. > > However with the bpf approach this would be gone, which is great. So what is this bpf magic actually trying to solve?