linux-kernel - Re: [PATCH 2/2] fat (exportfs): reconnect file handles to evicted inodes/dentries

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Message-ID: <87sjd1nj7s.fsf@devron.myhome.or.jp>
Date:	Mon, 09 Jul 2012 22:43:19 +0900
From:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
To:	"Steven J. Magnani" <steve@...idescorp.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] fat (exportfs): reconnect file handles to evicted inodes/dentries

"Steven J. Magnani" <steve@...idescorp.com> writes:

>> How do you prevent to modify or free the those inode/blocks from other
>> path?  Yeah, it is racy. And if races is not solved, that's simply wrong
>> and not solution.
>> 
>> Although I'm not thinking deeply about NFS support on FAT. Just a idea,
>> the one of possible solutions would be register it to hash, and find it
>> on all path. So, all path will use same inode and lock.
>> 
>> We need the key, possible key is - if it is only directory, FAT may be
>> able to use i_start as additional search key.
>
> Interesting idea. I think this, and reformulating the FAT NFS file
> handle to include the parent's i_ino, will greatly simplify (and speed
> up) the code.

Does it work even if the inode was rename()'ed?
-- 
OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
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