Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753266Ab3EaGpW (ORCPT ); Fri, 31 May 2013 02:45:22 -0400 Received: from mail-ob0-f173.google.com ([209.85.214.173]:41947 "EHLO mail-ob0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753164Ab3EaGpL (ORCPT ); Fri, 31 May 2013 02:45:11 -0400 MIME-Version: 1.0 Date: Fri, 31 May 2013 12:15:10 +0530 Message-ID: Subject: Regression introduced by commit "lib/bitmap.c: speed up bitmap_find_free_region" From: Sachin Kamat To: LKML Cc: Andrew Morton , chanho.min@lge.com, Kamil Debski , Sylwester Nawrocki , Arun Kumar K Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 935 Lines: 28 Hi, While testing MFC decoder on Exynos machines, I encountered some memory allocation errors due to failure of dma_alloc_coherent(). File: drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c Line: 38. Git bisect pointed me to the following commit as the first bad commit (linux-next tree of 20130531): commit 3d5272d9b289cd0930b2ea9984406d757a72f4dd Author: Chanho Min Date: Thu May 23 10:37:28 2013 +1000 lib/bitmap.c: speed up bitmap_find_free_region Reverting this (and the commit 197e1cf7 ("ib-bitmapc-speed-up-bitmap_find_free_region-fix") ) fixes this issue. Looks like some regression has been introduced by the above patch? --- With warm regards, Sachin -- 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/