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=-5.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 74A02C43441 for ; Thu, 29 Nov 2018 08:04:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2C96720868 for ; Thu, 29 Nov 2018 08:04:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kroah.com header.i=@kroah.com header.b="o0E8M63S"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="bI51LxjZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2C96720868 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kroah.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727160AbeK2TJF (ORCPT ); Thu, 29 Nov 2018 14:09:05 -0500 Received: from out4-smtp.messagingengine.com ([66.111.4.28]:51095 "EHLO out4-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726651AbeK2TJF (ORCPT ); Thu, 29 Nov 2018 14:09:05 -0500 Received: from compute6.internal (compute6.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 4E56121D8B; Thu, 29 Nov 2018 03:04:34 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute6.internal (MEProxy); Thu, 29 Nov 2018 03:04:34 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kroah.com; h= date:from:to:cc:subject:message-id:references:mime-version :content-type:in-reply-to; s=fm2; bh=waCbptYnG0xQOkAgw24NMTj+ozh gBzsCQJ2m9msFc6U=; b=o0E8M63SqyIUba3p3Aqhkr26htiSbFC1h8LNlKYlbXb dZVZNLs/TIJoiaSnQ7ILmO9Mzqw2Z+WtBCS2xMGE0NPRoegg5/klIzvsxeucZeXr 62pK/mAFD3lzLeNWy2P70Z0wh5PX/tn9miWRrkMlGrOpIrgOugmVuMJ1jwSmBBAu Luv2H+eKoIL13BKrC1YhMrIVY4aZx2yLyvqBPU9398gS0Jj0/uMlo35Aj3b386hz DLrcaKqwe3So6Y9eWdmby8a7FLBe7wnKQksfdO00r9FZ0zxS8dYrsUeThaxCJnB/ zspILOLgq2WN0Hws+nXpdEaVGSIpoVNCWwcYIa1Qqyw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=waCbpt YnG0xQOkAgw24NMTj+ozhgBzsCQJ2m9msFc6U=; b=bI51LxjZytJkYJFZ4pf69O Bkaker2/VUjBz5C5vztDW9+7UPZH9jMX2bDSrx4P5AJ6xOytZjl+KK6LE+E0F8R6 Uu4HHo/3CpF6r3OYujU7wMmIpvU9x7aXTMZuBHPKtJ8Tqp5huHm5AQNkQZfR++vU ewy1m6yv191Anm/795FbetyfMkLCpnCMa4zdA5gTku+2XAGzACZMhJLdq6Zzgq6y OrYEmt60AQZNTgginPLVD4B7BZY+mK0rbE5P6/nAnt8ygxsA45F8nkOcS2OkYs6C os6+OFE5ESdtY8VeXJCin92gezgrYBer2LxSfnZQ4cyQWEYaq3yzX2X1fjccasSA == X-ME-Sender: X-ME-Proxy: Received: from localhost (5356596b.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) by mail.messagingengine.com (Postfix) with ESMTPA id 44CA0E405B; Thu, 29 Nov 2018 03:04:32 -0500 (EST) Date: Thu, 29 Nov 2018 09:04:30 +0100 From: Greg KH To: Dan Williams Cc: stable@vger.kernel.org, Matthew Wilcox , linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: [4.19-stable PATCH] dax: Avoid losing wakeup in dax_lock_mapping_entry Message-ID: <20181129080430.GB13859@kroah.com> References: <20181126142743.GA25618@bombadil.infradead.org> <154343119877.981933.9776503138356369421.stgit@dwillia2-desk3.amr.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <154343119877.981933.9776503138356369421.stgit@dwillia2-desk3.amr.corp.intel.com> User-Agent: Mutt/1.11.0 (2018-11-25) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Nov 28, 2018 at 10:53:44AM -0800, Dan Williams wrote: > From: Matthew Wilcox > > commit 25bbe21bf427a81b8e3ccd480ea0e1d940256156 upstream. > > After calling get_unlocked_entry(), you have to call > put_unlocked_entry() to avoid subsequent waiters losing wakeups. > > Fixes: c2a7d2a11552 ("filesystem-dax: Introduce dax_lock_mapping_entry()") > Cc: > Signed-off-by: Matthew Wilcox > Signed-off-by: Dan Williams > --- > Passes the nvdimm unit test suite which exercises the lock path. Now applied, thanks. greg k-h