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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 ED81CC76194 for ; Mon, 22 Jul 2019 16:15:36 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id C5F2A2199C for ; Mon, 22 Jul 2019 16:15:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="fhMK6IS2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C5F2A2199C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=MjrAtMG/5fj0ebu3QSGHj8I71jmxPqeTzY/rCShAXdQ=; b=fhMK6IS2SFk2x4 ArIPSpllflsVVpmmJTQ4VWqIOUdrajhyy3D6oD3jOWLjKGawCvdaSV0/sIFydn1sc4rNuZtUNLXjQ nH48cTLFmHKo6ilKtOMl9MfkVMwlW2DJCpaGSj8EXDG+a78yQ2U9iKw6dE1bXe4/0ZjdGBSFj+oNM DfCjvWOOBwfXhBRnqIVoBscgx0Ux/bOh69uF5K+Nrzpuzgk+qLa8xGo7ocR13YBJAZnzCoBiZGCRb E0q8PFAVRdeIzT54QZMXG/aUeojiIPRWKum5AT0D0WRe0U3Vbc4lvL/GVE/G02WZ/hCLJxzME+eR2 65q4lchnDaIUP1/oKStg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hpayO-0005qt-AR; Mon, 22 Jul 2019 16:15:36 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hpayL-0005qR-AW for linux-arm-kernel@lists.infradead.org; Mon, 22 Jul 2019 16:15:34 +0000 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8B3EEC057F88; Mon, 22 Jul 2019 16:15:32 +0000 (UTC) Received: from redhat.com (ovpn-124-54.rdu2.redhat.com [10.10.124.54]) by smtp.corp.redhat.com (Postfix) with SMTP id E40705D9D3; Mon, 22 Jul 2019 16:15:23 +0000 (UTC) Date: Mon, 22 Jul 2019 12:15:22 -0400 From: "Michael S. Tsirkin" To: Jason Gunthorpe Subject: Re: RFC: call_rcu_outstanding (was Re: WARNING in __mmdrop) Message-ID: <20190722121441-mutt-send-email-mst@kernel.org> References: <20190721044615-mutt-send-email-mst@kernel.org> <20190721081933-mutt-send-email-mst@kernel.org> <20190721131725.GR14271@linux.ibm.com> <20190721210837.GC363@bombadil.infradead.org> <20190721233113.GV14271@linux.ibm.com> <20190722035042-mutt-send-email-mst@kernel.org> <20190722115149.GY14271@linux.ibm.com> <20190722134152.GA13013@ziepe.ca> <20190722155235.GF14271@linux.ibm.com> <20190722160448.GH7607@ziepe.ca> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190722160448.GH7607@ziepe.ca> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Mon, 22 Jul 2019 16:15:32 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190722_091533_392525_7ED167DD X-CRM114-Status: GOOD ( 12.86 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mhocko@suse.com, peterz@infradead.org, jasowang@redhat.com, ldv@altlinux.org, james.bottomley@hansenpartnership.com, linux-mm@kvack.org, namit@vmware.com, "Paul E. McKenney" , mingo@kernel.org, elena.reshetova@intel.com, aarcange@redhat.com, davem@davemloft.net, Matthew Wilcox , hch@infradead.org, linux-arm-kernel@lists.infradead.org, keescook@chromium.org, syzkaller-bugs@googlegroups.com, jglisse@redhat.com, viro@zeniv.linux.org.uk, christian@brauner.io, wad@chromium.org, linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org, luto@amacapital.net, ebiederm@xmission.com, akpm@linux-foundation.org, guro@fb.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Jul 22, 2019 at 01:04:48PM -0300, Jason Gunthorpe wrote: > On Mon, Jul 22, 2019 at 08:52:35AM -0700, Paul E. McKenney wrote: > > So why then is there a problem? > > I'm not sure there is a real problem, I thought Michael was just > asking how to design with RCU in the case where the user controls the > kfree_rcu?? Right it's all based on documentation saying we should worry :) > Sounds like the answer is "don't worry about it" ? > > Thanks, > Jason _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel