Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754159Ab2HTETz (ORCPT ); Mon, 20 Aug 2012 00:19:55 -0400 Received: from mail-vc0-f174.google.com ([209.85.220.174]:49169 "EHLO mail-vc0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753439Ab2HTETw (ORCPT ); Mon, 20 Aug 2012 00:19:52 -0400 MIME-Version: 1.0 In-Reply-To: <87pq6op9zz.fsf@devron.myhome.or.jp> References: <1345282899-7534-1-git-send-email-linkinjeon@gmail.com> <20120818132524.GW23464@ZenIV.linux.org.uk> <87pq6op9zz.fsf@devron.myhome.or.jp> Date: Mon, 20 Aug 2012 13:19:51 +0900 Message-ID: Subject: Re: [PATCH 0/4] fat: fix ESTALE errors From: Namjae Jeon To: OGAWA Hirofumi Cc: Al Viro , akpm@linux-foundation.org, 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 Content-Length: 1323 Lines: 34 2012/8/18, OGAWA Hirofumi : > Al Viro writes: > >> On Sat, Aug 18, 2012 at 05:41:39AM -0400, Namjae Jeon wrote: >>> 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 number. >> >> The hell it can. You've just made them unstable on rename(2). > > As more hint. We can't use i_pos as the inode number. > > E.g. inode is unlinked but is still opened (orphaned inode), the dir > entry is free and you can create the inode on same i_pos. After that, > both inodes have same i_pos (so inode number). > > Thanks. Hi. Ogawa. Thanks for specific explanation. I will check it. > -- > OGAWA Hirofumi > -- 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/