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 76D7630C623 for ; Fri, 17 Oct 2025 04:08:15 +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=1760674096; cv=none; b=sBaRwgnvbUu0cbWtjc/5nCPH8+jURTb04xNRTyyxVa+KxYkJcVYERRIrqL23BV8fnBK7+cmJYHs0v87YeGPPsgeJRF3t28rdhL0W7cQ+vY3muqZGm/obXSVOqWUAUpCyFkfXeFrDX4YN7VxuicbbZ9ZnoBWl/LdiJPq7YrzKnvI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760674096; c=relaxed/simple; bh=cMfVVDV9wXtMQWl7yX/WJjBlqlplyrvybFpVqfKFQdU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=AcLfhyvMqEfnmMAAMNLfPSvzgIBG5JXJGKzN3Qxy8qmtGlY8T1U9fqgDlTeYZ/ebZM/xagY/tx8zARkzjcKp24H7t2kDakaOzsMENS34Eeef1oH6DspSpMhEaLrePU9WaxPpuTEVEmbJXt9en3ji/kC0cH2UMvLV1GTL/DALM1U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (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=ZhENtrsU; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (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="ZhENtrsU" 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=3AJF7CtadI45lccRQxse7gs1WSs0xPye/A/IN1vNlw0=; b=ZhENtrsUR97YkKFW1EYH/H/S9d JZadLxyzjnlQBuQ1ZU7+8S18iwBQnHxqDLvB73X3xD7UG5iMMl2ZxQVm3OBUhsNZ4J+y6QtJ8wcyQ GfE+mcECa5sZmk4co6dyAHWe83l5w1Fh39fpXZtymJim+4farBDHSoUMypvtgpdaABM4RU5qgcF1e e6bhyDwtT87C4mRchCChbiBwDED/yu+zvWy76DujLcUGM9oC/5eGZQ0p/vtt/iPO414DgMtxK0MqY 0mGZbLJoqH1WWw5ZWLBaRdqulnKU0WkstkxYX0AcprU1uTfWnzf8vrCvSBC9VFEXHZMKvvdrw/Ew1 MZgf/V8A==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1v9blE-00000006Ust-2C0k; Fri, 17 Oct 2025 04:08:12 +0000 Date: Thu, 16 Oct 2025 21:08:12 -0700 From: Christoph Hellwig To: Chuck Lever Cc: NeilBrown , Jeff Layton , Olga Kornievskaia , Dai Ngo , Tom Talpey , linux-nfs@vger.kernel.org, Mike Snitzer , Chuck Lever Subject: Re: [PATCH v1] NFSD: Enable return of an updated stable_how to NFS clients Message-ID: References: <20251013190113.252097-1-cel@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: <20251013190113.252097-1-cel@kernel.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Mon, Oct 13, 2025 at 03:01:13PM -0400, Chuck Lever wrote: > From: Chuck Lever > > In a subsequent patch, nfsd_vfs_write() will promote an UNSTABLE > WRITE to be a FILE_SYNC WRITE. This indicates that the client does > not need a subsequent COMMIT operation, saving a round trip and > allowing the client to dispense with cached dirty data as soon as > it receives the server's WRITE response. What's the subsequent patch doing? Having the actual behavior change in the same series would really help to understand what is going on here.