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 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.lore.kernel.org (Postfix) with ESMTPS id 5573AC3601E for ; Thu, 10 Apr 2025 11:16:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=zsj9fnlIkW7j1wu9aFFsabLXTKsx6ktCDr7T+r/NSkY=; b=MXX2r0C6eumGgj5vcBrrhJhNp8 oh6UyVv+GNKyyZR5dPTPn795VPLkxECtjNnUZI3clUDguDPp/ThrmDmDdqExpMJzC9KtK/sQyd37u v9L81OcxgjsI3bmw6u+b/PSmqNTmkymhonAhW2NxXpCdpL8r9zmWAunSkw23d/dTpqQdIPNJ/MO/U cOL9KpIKt6KULHYNSn+qNU0Rdix4Hq73ygeq9n+mYHZDF2/9C5ZYbaceOXv5i36okIDmtsCqaZwt0 +3DjpZn4TRdoKKhBkOGE1JWVNqH9N8KygiGbqo8NxRqIEctoOI3+1zk5qlxFDEoHVI/UZnb81QxCl vM9wmrRw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u2pt2-0000000ABMj-2AFD; Thu, 10 Apr 2025 11:16:00 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u2nsc-00000009sQj-3IdV for linux-nvme@lists.infradead.org; Thu, 10 Apr 2025 09:07:26 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id F36856843D; Thu, 10 Apr 2025 09:07:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B95EBC4CEDD; Thu, 10 Apr 2025 09:07:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744276045; bh=pDFQSticHDrhRH5z+iWEYx0/gf4BCZEfdPz8+HgWdio=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=YVCFxn6nj6wewTLo9c8ei8U2J4F5bgJUc6YiEA1ree1+OYs7953+IRmIzX5UsqVmU Ji0mrOz4h1Oa51vnH8Ss+bsRB2Ol1XknfHmVrCMvBkCIVlbi+/cp3NqvaXr84O55S3 y8hWQCcrS0YFy54kZXDFwbr9+STvh8FQBOM846hC8WtFtRMqdmshQwOa4Nw+F/sNm0 vCbaey/YgcPZden9NvP4Yx4Zi2cj6jI+zlmWl6nLbdlvyYnnq8A3j1axXz0x7m7jSx 2LUu7DgJg6SNRMM03199N2wsDLzoPWDCmSeJuRo68fRU50aYXxtSzzdwgwm1ftqQV3 U7sD6HcTujB4g== Date: Thu, 10 Apr 2025 10:07:22 +0100 From: Keith Busch To: Christoph Hellwig Cc: Chaitanya Kulkarni , "alan.adamson@oracle.com" , "linux-nvme@lists.infradead.org" Subject: Re: Issue with AWUPF when using multiple controllers in a subsystem Message-ID: References: <4a2e4561-9311-40c9-aa65-87e7a2e5b041@oracle.com> <23d2c5c3-0832-4b62-a151-74a021c63201@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Thu, Apr 10, 2025 at 01:32:33AM -0700, Christoph Hellwig wrote: > On Thu, Apr 10, 2025 at 01:33:38AM +0000, Chaitanya Kulkarni wrote: > > > Perhaps using the minimum of all AWUPF and rejecting any ctrl which are > > lower than the initial value is right fix ? > > That's what I mean in my previous mail. You'll get different results depending on the non-deterministic order we enumerate. Can't we just change the stacked limit to the smallest observed value as we go?