Re: silent semantic changes with reiser4
From: Pavel Machek
Date: Tue Aug 31 2004 - 15:41:01 EST
Hi!
> > You do need extra tools anyway, placing them in the kernel is cheating (and
> > absolutely pointless, IMHO).
>
> I agree.
>
> There's no point to having the kernel export information that is already
> inherent in the main stream.
>
> I've seen all these examples of exposing MP3 ID information as a "side
> stream", and that's TOTALLY POINTLESS! The information is already there,
> it's in a standard format, and exporting it as a stream buys you
> absolutely nothing.
It buys me caching. I do quite often
bzcat patch.2.6.8.bz2 | less (read the patch)
(sometimes repeat that few times because I hit ^c when I should not
have etc).
cd ...clean; bzcat patch.2.6.8.bz2 | patch -Esp1
cd ...linux; bzcat patch.2.6.8.bz2 | patch -Esp1
Now... that's total waste of cpu. bzip2 decompression takes quite some
time.
I could do
bzcat patch.2.6.8.bz2 > /tmp/delete.me.when.you.are.done
...but I'd probably forget to delete that one and anyway, it requires
me to think about it. Nicest way would be
cat patch.2.6.8.bz2/ubz | less
cd ...clean; cat patch.2.6.8.bz2/ubz | patch -Esp1
cd ...linux; cat patch.2.6.8.bz2/ubz | patch -Esp1
with kernel intelligently caching uncompressed data. I believe this
can not be done completely in userspace.
Pavel
--
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!
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