Messages in this thread | | | Date | Tue, 31 Aug 2004 22:32:26 +0200 | From | Pavel Machek <> | Subject | Re: silent semantic changes with reiser4 |
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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! - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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