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Date: Thu, 26 Sep 2002 15:05:57 +0100
From: Christoph Hellwig <hch@infradead.org>
To: "Theodore Ts'o" <tytso@mit.edu>, Jakob Oestergaard <jakob@unthought.net>,
       "Stephen C. Tweedie" <sct@redhat.com>, linux-kernel@vger.kernel.org,
       Andrew Morton <akpm@zip.com.au>
Subject: Re: jbd bug(s) (?)
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	Theodore Ts'o <tytso@mit.edu>,
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On Thu, Sep 26, 2002 at 09:44:35AM -0400, Theodore Ts'o wrote:
> block size).  So we could add larger block sizes, but it would mean
> adding a huge amount of complexity for minimal gain (and if you really
> want that, you can always use XFS, which pays that complexity cost).

XFS does't support blocksize > PAGE_CACHE_SIZE under linux. In fact the
latest public XFS/Linux release doesn't even support any blocksize other
than PAGE_CACHE_SIZE.  This has changed in the development tree now and
the version merged in 2.5 and the next public 2.4 release will have that
support.  Doing blocksize > PAGE_CACHE_SIZE will difficult if not
impossible due VM locking issues with the 2.4 and 2.5 VM code.

> It'd be nice to get real VM support for this, but that will almost
> certainly have to wait for 2.6.

I don't really see this happening before Halloween..

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