Subject: Re: [PATCH 3/3] Fix problems on multi-TB filesystem and file
From: Trond Myklebust <trond.myklebust@fys.uio.no>
To: Coywolf Qi Hunt <coywolf@gmail.com>
Cc: Takashi Sato <sho@tnes.nec.co.jp>, viro@zeniv.linux.org.uk,
       linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
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Date: Fri, 16 Dec 2005 15:37:11 -0500
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On Sat, 2005-12-17 at 04:24 +0800, Coywolf Qi Hunt wrote:

> >
> > It may surprise you to learn that not all network filesystems are block
> > based.
> >
> > NFS has no truck with CONFIG_LBD at all.
> 
> I thought no network filesystems are block based from a client
> viewpoint.  (There's a network block driver though.) Client kernel
> needn't enable LBD.

Without this patch, the client _would_ have to enable LBD if it wanted
to correctly report the size of a large disk on the remote server.

The main point, though is that sector_t is a handle to a block. It is
_NOT_ the right type to use for reporting a disk size.

Cheers,
  Trond

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