Daniel Phillips wrote:
>
> And the third is a combination of two patches:
>
> ftp://ftp.math.psu.edu/pub/viro/ext2-dir-patch-S4.gz
> http://nl.linux.org/~phillips/htree/dx.pcache-2.4.4-6
>
These changes have a very low impact on the journalling code,
and vice versa. A few days effort to merge them once ext3/2.4
is steady. And once the pcache stuff is steady: the journalling
code is pretty complex.
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.
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.
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