Nick Piggin <[email protected]> writes:
> I would be happy if you come up with a quick fix, I'm just trying to
> stamp out a few big bugs in mm. However I did prefer my way of moving
> all the exapand code into generic_cont_expand, out of prepare_write, and
> avoiding holding the target page locked while we're doing all the expand
> work (strictly, you might be able to get away with this, but it is
> fragile and ugly).
>
> AFAIKS, the only reason to use prepare_write is to avoid passing the
> get_block into generic_cont_expand?
IIRC, because generic_cont_expand is designed as really generic. It
can also use for non moronic filesystem.
In the case of reiserfs, it ->prepare_write might be necessary.
--
OGAWA Hirofumi <[email protected]>
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