From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756851Ab3IES4H (ORCPT ); Thu, 5 Sep 2013 14:56:07 -0400 Received: from g1t0028.austin.hp.com ([15.216.28.35]:37522 "EHLO g1t0028.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752412Ab3IES4G (ORCPT ); Thu, 5 Sep 2013 14:56:06 -0400 From: Waiman Long Cc: Waiman Long , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, "Chandramouleeswaran, Aswin" , "Norton, Scott J" , George Spelvin , John Stoffel Subject: [PATCH v2 0/1] dcache: Translating dentry into pathname without taking rename_lock Date: Thu, 5 Sep 2013 14:55:15 -0400 Message-Id: <1378407316-59852-1-git-send-email-Waiman.Long@hp.com> X-Mailer: git-send-email 1.7.1 To: Alexander Viro , Linus Torvalds Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Change History v1->v2: - Check for internal vs external dname, taking d_lock only for external dname for safety. - Replace memchr() by a byte-by-byte checking for loop. - Try lockless dentry to pathname conversion 3 times before falling back to taking the rename_lock to prevent live-lock. - Make code re-factoring suggested by George Spelvin. Waiman Long (1): dcache: Translating dentry into pathname without taking rename_lock fs/dcache.c | 213 ++++++++++++++++++++++++++++++++++++++++++----------------- 1 files changed, 151 insertions(+), 62 deletions(-)