Re: 2.5 merge candidate list, final version. (End of "crunch time"series.)

Andrew Morton
2002-10-30T09:29:19Z

Jeff Garzik wrote:
>
> Hans Reiser wrote:
>
> > We are going to submit a patch appropriate for inclusion as an
> > experimental FS on Halloween. I hope you will forgive our pushing
> > the limit timewise, it is not by choice, but the algorithms we used to
> > more than double reiserfs V3 performance were, quite frankly, hard to
> > code.
>
> Does your merge change the core code at all? Does it add new syscalls?
>

Their changes are tiny, and sensible. See
http://www.namesys.com/snapshots/2002.10.29/

But I'd like to ask about the status of reiser3 support.

Chris had patches *ages* ago to convert it to use direct-to-BIO for
reads, and writes should be done as well. reiserfs3 is still using
buffer-head-based IO for bulk reads and writes. That's a 25-30% hit
in CPU cost, and all the old ZONE_NORMAL-full-of-buffer_heads
problems.

Any plans to get that work finished off?