Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751400AbaDWWB2 (ORCPT ); Wed, 23 Apr 2014 18:01:28 -0400 Received: from mout.gmx.net ([212.227.15.18]:53174 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751178AbaDWWB0 (ORCPT ); Wed, 23 Apr 2014 18:01:26 -0400 From: Marc Dietrich To: linux-kernel Cc: Jaegeuk Kim Subject: f2fs causes system stall Date: Thu, 24 Apr 2014 00:00:59 +0200 Message-ID: <2601952.jk1l5iHOJT@ax5200p> User-Agent: KMail/4.13 (Linux/3.13.0-24-generic; KDE/4.13.0; x86_64; ; ) MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Provags-ID: V03:K0:arSfVl/+6XxJPRe5/6yZMSJUyRH6OIrqCQQriiRpkS/lC0Vxp/Z FXXmvYw1iCFSVsbyLTSHkcOuMX5bxauLt1ggwunaxsGGrdmHNJrxnddeY2m2OMsMz0PxUHf Km8GAkv1PWKDx/VeeqPK8p4qXyGwUOBE1eemSVNgJUCuKbmh4Vxrc/YUcSHQCPCT4k/pO9f 1kMcANfTbJ/HmLwYBtasg== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, it took me a while to bisect a problem which causes my ARM (tegra2) netbook to frequently stall for 5-10 seconds when I enable EXA acceleration (opentegra experimental ddx). I can only guess that the offending commit 8618b88 "f2fs: fix not to write data pages on the page reclaiming path" somehow causes high kernel latencies which may interrupt/disturb the command stream to the gpu in this particular case. Reverting this commit fixes the problem. Any hints? Regards, Marc -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/