linux-kernel - Re: [PATCH] BTRFS: Transpose parent_objectid and parent_gen in struct btrfs

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Message-Id: <1237395629.10384.2.camel@think.oraclecorp.com>
Date:	Wed, 18 Mar 2009 13:00:29 -0400
From:	Chris Mason <chris.mason@...cle.com>
To:	David Howells <dhowells@...hat.com>
Cc:	balajirrao@...il.com, dwmw2@...radead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] BTRFS: Transpose parent_objectid and parent_gen in
 struct btrfs_fid

On Wed, 2009-03-18 at 16:16 +0000, David Howells wrote:
> Transpose parent_objectid and parent_gen in struct btrfs_fid so that gen and
> parent_gen (both u32) are adjacent, thus packing nicely between the u64
> members.
> 
> This would seem to be reasonable as the parent generation number is always
> used if the parent objectid is.
> 

Won't this confuse any handles the clients already have if the server
reboots with the new handle format?

-chris


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