Date: Sat, 18 Aug 2012 14:25:24 +0100
From: Al Viro <viro@ZenIV.linux.org.uk>
To: Namjae Jeon <linkinjeon@gmail.com>
Cc: hirofumi@mail.parknet.co.jp, akpm@linux-foundation.org,
        linux-kernel@vger.kernel.org, Namjae Jeon <namjae.jeon@samsung.com>
Subject: Re: [PATCH 0/4] fat: fix ESTALE errors
Message-ID: <20120818132524.GW23464@ZenIV.linux.org.uk>
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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).
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