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 X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E03F7C43331 for ; Fri, 6 Sep 2019 19:41:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BB1202067B for ; Fri, 6 Sep 2019 19:41:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393426AbfIFTlk convert rfc822-to-8bit (ORCPT ); Fri, 6 Sep 2019 15:41:40 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35400 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2393391AbfIFTlk (ORCPT ); Fri, 6 Sep 2019 15:41:40 -0400 Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id BEF0C7BDCB for ; Fri, 6 Sep 2019 19:41:39 +0000 (UTC) Received: by mail-wm1-f69.google.com with SMTP id k67so2545990wmf.3 for ; Fri, 06 Sep 2019 12:41:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=52DIK7NJqgCF0lriDxmYd5biSt16yJkilPd+S1AphLw=; b=Bvk7Z3PS0uCLZnHSIJUjbAqFoGFu9wqF1+71HMHvwBVLNnt4/zxJApef90t7lWxzPl KwK+Y2aM1Za9IUk94pNVDJOolGi2e1G1FOdVM33/1MJKWEnMif+hWejdo9h3l12Ekg11 3AmG6DH3DdnEVQVYDLXHx/Wc2E5h2UGtlksMfD006sH45K1VX+JeCvdI5h62dkypqwhV 1GIMDsGkDryBJX0CS7gcyOtvHg3glqUmYbOtyA8bvK7cQBRDbsp/QqXEmxJLGIymg8On arQBTr340uI/cEU5tZhJNupWkWErjZWhx8tBVSndLTPAG1P/E8XuNsU6QyvZWmzJkbCh qJiQ== X-Gm-Message-State: APjAAAW5FRRSrHrluf19rhTbXGs2FG1vuZUQB/8rGpnyOlwpCFfYNfVz t6TDw5VRvu+7HYGeDLiHYqCn11M+qVLBuHMDWfz4gTVxR/C9yILPsev+xgmPaurq1koEkI35ayX 7x6E6bOpoClxCg0Vs/5+PE6bt8ir2aMdvZYKRwLS7uQ== X-Received: by 2002:a05:600c:21d1:: with SMTP id x17mr7889440wmj.123.1567798898422; Fri, 06 Sep 2019 12:41:38 -0700 (PDT) X-Google-Smtp-Source: APXvYqxRrLCtnVzxTSoLuDOtC+daCshtNVcy84u/UeLIXysZdasC4bvLIHhDt5U2jH6ScpVJJ6HgYq0HtFjLJ/mny5c= X-Received: by 2002:a05:600c:21d1:: with SMTP id x17mr7889420wmj.123.1567798898173; Fri, 06 Sep 2019 12:41:38 -0700 (PDT) MIME-Version: 1.0 References: <156763534546.18676.3530557439501101639.stgit@warthog.procyon.org.uk> <17703.1567702907@warthog.procyon.org.uk> In-Reply-To: From: Ray Strode Date: Fri, 6 Sep 2019 15:41:01 -0400 Message-ID: Subject: Re: Why add the general notification queue and its sources To: Linus Torvalds Cc: David Howells , Greg Kroah-Hartman , Steven Whitehouse , Nicolas Dichtel , raven@themaw.net, keyrings@vger.kernel.org, linux-usb@vger.kernel.org, linux-block , Christian Brauner , LSM List , linux-fsdevel , Linux API , Linux List Kernel Mailing , Al Viro , "Ray, Debarshi" , Robbie Harwood Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Hi, On Fri, Sep 6, 2019 at 3:32 PM Ray Strode wrote: > of course, one advantage of having the tickets kernel side is nfs could > in theory access them directly, rather than up calling back to userspace... No, that's not true actually, it's still going to need to go to userspace to do hairy context setup i guess... so 🤷 dunno.