Received: by 2002:a05:6a10:f347:0:0:0:0 with SMTP id d7csp3743638pxu; Mon, 30 Nov 2020 09:22:48 -0800 (PST) X-Google-Smtp-Source: ABdhPJwxRygG39k/3djtSdGZXc18kJALgeRUlkPZyxVuiOyMhdx2Y0z8I5NGMLlRo86lw1boEHam X-Received: by 2002:aa7:cc14:: with SMTP id q20mr23360691edt.140.1606756967892; Mon, 30 Nov 2020 09:22:47 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1606756967; cv=none; d=google.com; s=arc-20160816; b=kgHDENqoni+xm52+SpWgL9+rYsbf1BFbfefbSLJHpKJKhLAPEKN9vzweYEiqu0fybf MyZZ76mI9j9xRKDOo0dobaW3QZ1KnSXM7wQ4/UDGBQuaoBmBvNmJp0ZvkE9d3i9t/1M4 WD4hE+tvMNe9hvjNv9LZeV3cS1O4ELm42YB7LaGBmhVQYq2cpHV5QMqcvPVysyRJvKxt MSmPkTo/jnpsATRMqy6XgZJzy9OpvO4mH2TwWWzrbWmF0GuwzZdgVjNfiVl/lZp5aP9b NCOdAB9p2GcKvGROHADH5UmQsWVGNbD6HBxAQLvstLIWx/j6/0mmVzFkDNnD6m0DImMe z5Hw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=s4jJK+5znvzzHztXLjOWVZCVFuhZUwJ1CvNQEbKOU5Y=; b=uwYQq4xsAFaZ4HDZD/L+ydgrH3O5H0DG6ZQGysRCK4CL4XDiQwIzDUuHXQh6koBGWf TssEAnZQOGnHeHS8juKrNeAibAI+OcCcr6gyfM11TdJZYpnv3BwrgmkAqs9Sx1YDBRbv 1upcPvnCNqyrbPXx5bRKFjks1422b8QgQw+8fKm2mmeaxGLbbIHMr+eiuOTUpl+9gQj6 WkPltZsyLTn4TYYrcqFc8cz17gfk+EO20WZ/eYw34t4ByoGnQb5eCa9F27UWblPqy7Qv 5ixpgpzxuFfUprTnhvW38ZVcQfQ1MZBjNFzliRgc+oFvUwrocrkVXLb2ZpmGTHNl6wDr k6ew== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=WTnH0iiD; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id h12si13273110ejx.340.2020.11.30.09.22.24; Mon, 30 Nov 2020 09:22:47 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=WTnH0iiD; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387405AbgK3RSb (ORCPT + 99 others); Mon, 30 Nov 2020 12:18:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45706 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725955AbgK3RSb (ORCPT ); Mon, 30 Nov 2020 12:18:31 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C5E64C0613D4; Mon, 30 Nov 2020 09:17:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=s4jJK+5znvzzHztXLjOWVZCVFuhZUwJ1CvNQEbKOU5Y=; b=WTnH0iiDgBUaxbqorB81mzceKu xjKU/vksB7Xg5BKiVWKPpxAEDG4qC7sfjOPn9cUWP7LU+xMzMk8OOP6El3rI/ev13NaM6utcJdBN+ +11q/2ZVKmIfSiqE/nbrrjTwkHUFVQoubolgF8sRtnqYjdE/Gypl07Z05shEODqw0o5moXeqHyCL2 WfaQ+4KY+5X37w2SNDHnOeyQl4PG4gIAB0prPS72OuZtbOfP4DI3TFFwr0O2jJ40fBY4VdLdWPGsh qxuGXB+XIYaDEtACXphFwyz0AXDIBMujVxqPY8eH/pydGkUm18dpwIxafusLHvxtV08RFWjPBDuNj 4R9WbcKg==; Received: from hch by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kjmo8-0003Td-Vj; Mon, 30 Nov 2020 17:17:49 +0000 Date: Mon, 30 Nov 2020 17:17:48 +0000 From: Christoph Hellwig To: Daniel Wagner Cc: linux-block@vger.kernel.org, Jens Axboe , linux-kernel@vger.kernel.org, Ming Lei Subject: Re: [PATCH v2] blk-mq: Remove 'running from the wrong CPU' warning Message-ID: <20201130171748.GC10078@infradead.org> References: <20201130101921.52754-1-dwagner@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201130101921.52754-1-dwagner@suse.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 30, 2020 at 11:19:21AM +0100, Daniel Wagner wrote: > It's guaranteed that no request is in flight when a hctx is going > offline. This warning is only triggered when the wq's CPU is hot > plugged and the blk-mq is not synced up yet. > > As this state is temporary and the request is still processed > correctly, better remove the warning as this is the fast path. > > Suggested-by: Ming Lei > Signed-off-by: Daniel Wagner Looks good, Reviewed-by: Christoph Hellwig