On Thursday 17 May 2001 17:53, Andrew Morton wrote:
> It's probably worth thinking about adding a fourth journalling
> mode: `journal=none'. Roll it all up into a single codebase
> and call it ext4.
Or ext5 (= ext2 + ext3).
> It rather depends on where the buffercache ends up. ext3 is
> a client of JBD (nee JFS). JBD does *block* level journalling.
> Any major change at that level will take rather some adjusting
> to.
Well, if you look how I did the index, it works with blocks and buffers
while still staying entirely in the page cache. This was Stephen's
suggestion, and it integrates reliably with Al's page-oriented code.
So I'm mixing pages and blocks together and it's working pretty well.
BTW, the parts of Al's patch that I converted from pages to blocks got
shorter and easier to read.
I'm now working on some code to handle non-data blocks in a similar
way, so if this works out it could make the conversion an awful lot
less painful for you.
--
Daniel
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