lkml.org 
[lkml]   [2012]   [Aug]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH 0/4] fat: fix ESTALE errors
Date
Al Viro <viro@ZenIV.linux.org.uk> writes:

> On Sat, Aug 18, 2012 at 05:41:39AM -0400, Namjae Jeon wrote:
>> From: Namjae Jeon <namjae.jeon@samsung.com>
>>
>> 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.
--
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>


\
 
 \ /
  Last update: 2012-08-18 16:41    [W:0.291 / U:0.220 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site