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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 D8C27C47253 for ; Fri, 1 May 2020 19:02:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B6BE72173E for ; Fri, 1 May 2020 19:02:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="hL1KTYBV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729766AbgEATCd (ORCPT ); Fri, 1 May 2020 15:02:33 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:46378 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730449AbgEATCd (ORCPT ); Fri, 1 May 2020 15:02:33 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588359752; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=Jek6f1FrZy1FOjnEBD+3htgOWCPMzgLS9uHoe5URBjs=; b=hL1KTYBVPAK7yBBqk6ZJYKqytNYGAmsmJROy6ndg9C5mp9esANedmz0cj8Mr4Bzbh4kBwa dofabrozqC4FYxENVHru7MQstVNZLuQRWA1nctmcDSWwoKanlR1eGwR/IJnB7qZae37yTW NqS5ff8fvSiTrq0LLO/duU0RefvNoN8= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-273-PJVo74boNAOibribiK5KtQ-1; Fri, 01 May 2020 15:02:28 -0400 X-MC-Unique: PJVo74boNAOibribiK5KtQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 83029107ACF4; Fri, 1 May 2020 19:02:27 +0000 (UTC) Received: from pick.fieldses.org (ovpn-114-161.phx2.redhat.com [10.3.114.161]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A6F0438A; Fri, 1 May 2020 19:02:24 +0000 (UTC) Received: by pick.fieldses.org (Postfix, from userid 2815) id B9B2A1202A6; Fri, 1 May 2020 15:02:23 -0400 (EDT) Date: Fri, 1 May 2020 15:02:23 -0400 From: "J. Bruce Fields" To: Linus Torvalds Cc: Tejun Heo , "open list:NFS, SUNRPC, AND..." , Jeff Layton , David Howells , Shaohua Li , Oleg Nesterov , Linux Kernel Mailing List Subject: Re: [PATCH 0/4] allow multiple kthreadd's Message-ID: <20200501190223.GF9191@pick.fieldses.org> References: <1588348912-24781-1-git-send-email-bfields@redhat.com> <20200501182154.GG5462@mtj.thefacebook.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 01, 2020 at 11:30:38AM -0700, Linus Torvalds wrote: > On Fri, May 1, 2020 at 11:22 AM Tejun Heo wrote: > > > > Looks fine to me too. I don't quite understand the usecase tho. It looks > > like all it's being used for is to tag some kthreads as belonging to the > > same group. Can't that be done with kthread_data()? > > I _think_ Bruce wants the signal handling unification too, because > nfsd wants to react to being shut down with signals. No, maybe kthread_data() might do the job. (I don't see how this would help with signal handling. But, I'm kind of ignorant of how signalling works.) --b.