From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935336Ab1IOXHL (ORCPT ); Thu, 15 Sep 2011 19:07:11 -0400 Received: from mga11.intel.com ([192.55.52.93]:47940 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935277Ab1IOXHG (ORCPT ); Thu, 15 Sep 2011 19:07:06 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.68,390,1312182000"; d="scan'208";a="54225744" From: Andi Kleen To: viro@zeniv.linux.org.uk Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Improve lseek scalability v3 Date: Thu, 15 Sep 2011 16:06:46 -0700 Message-Id: <1316128013-21980-1-git-send-email-andi@firstfloor.org> X-Mailer: git-send-email 1.7.4.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently generic_file_llseek users synchronize all on the inode i_mutex, which is very heavy handed because it affects even different processes. This patchkit attempts to make generic_file_llseek (mostly) lockless. For details see the individual patches. v2: Forward ported to recent kernel. Add SEEK_DATA/HOLE support. Fix a nasty SEEK_END bug in the previous version. v3: No changes, except rebase. All reviews passed. Just reposting for merging. -Andi