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 A60B940DFC2 for ; Tue, 10 Mar 2026 13:26:09 +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=1773149171; cv=none; b=VmntGZM9Mk+j1VUOCJqPtss41/iwq6kE83YaqY95UHVKYcOfkAOZhafwNK31FlyyjsJjI20EbZEseRVUSLHduWlsHQwQDwqk8BDif+W3iL3zMSuKYS1+WgCZAlCt41XLgxxijO7RhuD9DM8OjKCVSC29ptdfSZJ+pbNrQ16kR5Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773149171; c=relaxed/simple; bh=e8EtFbgjfSITYOVYzoxC+uQ2Io0HqB7zmiF3HKRPcPg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=CHzlRIzL2g1IMVkZ5W+Pwt3WH2AXdOVdPD05Mbr5/RNl9Wtn1U3j/CsSIMb+N9ACtYPjFM5mwue5t0wr4EBjxTGPupQaxvn6pehT2QZmYnC/G4j3uCLyPwQ7GNUkNvD8ISPvHJtDdXbu7hmnI57fTP3WDMg9q7Yv2wBo4/D+fuE= 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=C5igvwGG; 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="C5igvwGG" 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=U3IOCJJlNVaWrgXXqQT8mEstr+D2BAUnc3Cg01MN6AU=; b=C5igvwGGu2X1Eug3uV+cxygegk La343pXVFA/sxgrsOkwubXubZs+U0KsvGvNqSNoL7mbKM9fIpWg/LhE/hINdxZ33KNxJ9hb13rhWV D7nmumKBvf+V7EWlb5N77pvoEX8HwkVRTJUTCbmY3oOh6Uq8GBmMFQWn/JmuJDPPnBviHQbZ3lHQd 2VHqaolXsuJJG7OapPILdVPaR0Ns3R01GVkBqcvex25HA2nrUP+qeJ1MXg9tSVS9E6xtoFv9Vm0NQ KlH6aGZ1j71xjG9FMJFDBNMiFv7relnofd7v4lzvrMcwl0S+UkU/ORoioOWOeggwqe78AN+q0OSMb ysi2ipSg==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1vzx69-00000009b5c-02SA; Tue, 10 Mar 2026 13:26:09 +0000 Date: Tue, 10 Mar 2026 06:26:08 -0700 From: Christoph Hellwig To: Mike Snitzer Cc: Chuck Lever , Jeff Layton , Trond Myklebust , Anna Schumaker , linux-nfs@vger.kernel.org Subject: Re: [RFC PATCH v2 00/11] NFS/NFSD: nfs4_acl passthru for NFSv4 reexport Message-ID: References: <20260224192438.25351-1-snitzer@kernel.org> Precedence: bulk X-Mailing-List: linux-nfs@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: <20260224192438.25351-1-snitzer@kernel.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html NAK on this whole thing. Linux does not support NFSv4 ACLs for pretty good reasons. If you want to add it you'd have to do it properly (even if that is a bad idea in my opinion). But adding a weird special case for passthrough is a no-go. To be honest I really don't understand why your (as in Hammerspae, not you personally) want to abuse the kernel nfsd and nfs client for that. If you want to pass in the protocol do it in userspace without burdening the kernel with it.