Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752346AbcDBDKX (ORCPT ); Fri, 1 Apr 2016 23:10:23 -0400 Received: from g2t4623.austin.hp.com ([15.73.212.78]:55291 "EHLO g2t4623.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751183AbcDBDKW (ORCPT ); Fri, 1 Apr 2016 23:10:22 -0400 From: Waiman Long To: "Theodore Ts'o" , Andreas Dilger , Tejun Heo , Christoph Lameter Cc: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, Scott J Norton , Douglas Hatch , Toshimitsu Kani , Waiman Long Subject: [PATCH 0/3] ext4: Improve parallel I/O performance on NVDIMM Date: Fri, 1 Apr 2016 23:09:35 -0400 Message-Id: <1459566578-30221-1-git-send-email-Waiman.Long@hpe.com> X-Mailer: git-send-email 1.7.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 910 Lines: 22 This patchset aims to improve parallel I/O performance of the ext4 filesystem on fast storage devices like NVDIMM. Patch 1 eliminates duplicated inode_dio_begin()/inode_dio_end() calls. Patch 2 provides a set of simple percpu statistics count helper functions. Patch 3 converts some ext4 statistics counts into percpu counts using the helper functions. Waiman Long (3): ext4: Pass in DIO_SKIP_DIO_COUNT flag if inode_dio_begin() called percpu_stats: Simple per-cpu statistics count helper functions ext4: Make cache hits/misses per-cpu counts fs/ext4/extents_status.c | 20 +++++--- fs/ext4/extents_status.h | 11 ++++- fs/ext4/indirect.c | 10 +++- fs/ext4/inode.c | 12 ++++- include/linux/percpu_stats.h | 103 ++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 141 insertions(+), 15 deletions(-) create mode 100644 include/linux/percpu_stats.h