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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) (?)
Date: Thu, 26 Sep 2002 15:05:57 +0100	[thread overview]
Message-ID: <20020926150557.A18323@infradead.org> (raw)
In-Reply-To: <20020926134435.GA9400@think.thunk.org>; from tytso@mit.edu on Thu, Sep 26, 2002 at 09:44:35AM -0400

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..


  reply	other threads:[~2002-09-26 14:00 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-09-24  7:21 jbd bug(s) (?) Jakob Oestergaard
2002-09-25 16:36 ` Stephen C. Tweedie
2002-09-26 12:21   ` Jakob Oestergaard
2002-09-26 12:27     ` Stephen C. Tweedie
2002-09-26 12:56       ` Jakob Oestergaard
2002-09-26 13:44         ` Theodore Ts'o
2002-09-26 14:05           ` Christoph Hellwig [this message]
2002-09-26 14:25             ` Theodore Ts'o
2002-09-26 14:41               ` Christoph Hellwig

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