Re: Congratulations! we have got hash function screwed up

[David Masover <ninja@slaphack.com>]

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Hans Reiser wrote:
| David Masover wrote:
|
|> Hans Reiser wrote:
|>
|>> Esben Stien wrote:
|>>
|>>>
|>>> I really don't like that there is no undelete feature in reiserfs -
|>>> it's not planned for reiserfs-4 either.
|>>>
|>> Blame Linus for that.  I would put it in, but he thinks it belongs in
|>> userspace.  I may still put it in someday and just not tell him.;-)
|>> I'll just let the users know about it and not him.;-)
|>
|>
|>
|> He has some good points, though.  If you're going to have a kernel,
|> you want to keep it small, put stuff in only if it needs to be there.
|> And how much speed do we lose by putting stuff in userspace, if we do
|> it right?  C'mon, if Doom 3 can run in userspace, surely some sort of
|> trash can / recycle bin can, right?
|>
|> Oh wait... Gnome/KDE already do that.
|>
|>
|>
| the problem being that everyone uses rm not the gnome/kde trashcan....
| literal copying of Apple doesn't work for unix because we use shells
| most of the time.

"we" being people who should be able to back things up and avoid really
stupid mistakes, and people who care about performance.

But you are right, this has to be lower down -- maybe glibc, maybe vfs,
maybe fs views -- because there's no standardization once you get to
things like gnome.

My point about Doom 3 is that I like the idea of a microkernel, if it
could be done fast enough.  Games talk to kernel space and hardware very
quickly, but it seems kernel-userspace communication isn't fast enough
for things like filesystems.

Maybe someone can engineer a way around that?
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