From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932743AbcAYMsy (ORCPT ); Mon, 25 Jan 2016 07:48:54 -0500 Received: from mail-pa0-f48.google.com ([209.85.220.48]:33554 "EHLO mail-pa0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932429AbcAYMsp (ORCPT ); Mon, 25 Jan 2016 07:48:45 -0500 Date: Mon, 25 Jan 2016 21:46:54 +0900 From: Sergey Senozhatsky To: stable@vger.kernel.org Cc: Minchan Kim , Andrew Morton , Kyeongdon Kim , linux-kernel@vger.kernel.org, Sergey Senozhatsky , Sergey Senozhatsky Subject: [stable] upstream 3d5fe03a3ea01 -stable backport request Message-ID: <20160125124654.GA526@swordfish> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Please add upstream 'commit 3d5fe03a3ea01 ("zram/zcomp: use GFP_NOIO to allocate streams")' to stable releases. :commit 3d5fe03a3ea013060ebba2a811aeb0f23f56aefa :Author: Sergey Senozhatsky : : zram/zcomp: use GFP_NOIO to allocate streams : : We can end up allocating a new compression stream with GFP_KERNEL from : within the IO path, which may result is nested (recursive) IO : operations. That can introduce problems if the IO path in question is a : reclaimer, holding some locks that will deadlock nested IOs. : : Allocate streams and working memory using GFP_NOIO flag, forbidding : recursive IO and FS operations. -ss