From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754760Ab2IQOOp (ORCPT ); Mon, 17 Sep 2012 10:14:45 -0400 Received: from mail-wg0-f44.google.com ([74.125.82.44]:65471 "EHLO mail-wg0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753457Ab2IQOOo (ORCPT ); Mon, 17 Sep 2012 10:14:44 -0400 MIME-Version: 1.0 In-Reply-To: <87k3vs6bjm.fsf@devron.myhome.or.jp> References: <1347798099-2592-1-git-send-email-linkinjeon@gmail.com> <87k3vs6bjm.fsf@devron.myhome.or.jp> Date: Mon, 17 Sep 2012 23:14:42 +0900 Message-ID: Subject: Re: [PATCH v3 0/5] fat: make persistent inode numbers and stablize for NFS. From: Namjae Jeon To: OGAWA Hirofumi Cc: akpm@linux-foundation.org, bfields@fieldses.org, viro@zeniv.linux.org.uk, linux-kernel@vger.kernel.org, Namjae Jeon Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2012/9/17 OGAWA Hirofumi : > Namjae Jeon writes: > >> From: Namjae Jeon >> >> This patch-set eliminates the client side ESTALE errors when a FAT partition >> exported over NFS has its dentries evicted from the cache. >> >> One of the reasons for this error is lack of permanent inode numbers on FAT >> which makes it difficult to construct persistent file handles. >> This can be overcome by using the on-disk location of the directory entries >> (i_pos) as the inode numbers. >> >> Once the i_pos is available, it is only a matter of reading the directory >> entries from the disk clusters to locate the matching entry and rebuild >> the corresponding inode. >> >> We reached the conclusion support stable inode's read-only export first after >> discussing with OGAWA and Bruce. >> And will make it writable with some operation(unlink and rename) limitation >> next time. >> >> Namjae Jeon (4) >> fat: modify nfs mount option >> fat: allocate persistent inode numbers >> fat (exportfs): rebuild inode if ilookup() fails >> fat (exportfs): rebuild directory-inode if fat_dget() fails >> Documentation: update nfs option in filesystem/vfat.txt > > Sorry for late, I will review at next weekend. No, problem. Thanks~ > > Thanks. > -- > OGAWA Hirofumi