Re: jbd bug(s) (?)

[Theodore Ts'o]

On Thu, Sep 26, 2002 at 03:05:57PM +0100, Christoph Hellwig wrote:
> 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.

My mistake.  At one point I was talking to Mark Lord and I had gotten
the impression they had some Irix-VM-to-Linux-VM mapping layer which
would make blocksize > PAGE_SIZE possible.

						- Ted