Messages in this thread |  | | From | "Petr Vandrovec" <> | Date | Mon, 26 Nov 2001 21:47:38 MET-1 | Subject | Re: New ac patch??? |
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On 26 Nov 01 at 20:39, Alan Cox wrote: > > If it will go into mainstream, please change it to config option or > > something like that. I'm doing > > > > for a in /dev/hd[a-z]; do hdparm -Y $a; done > > Thats somewhat undefined in its behaviour. You might also page after the > hdparm -Y
cat /sbin/halt > /dev/null cat /bin/sleep > /dev/null for a in /dev/hd[a-z]; do /sbin/hdparm -Y $a; done /bin/sleep 1 /sbin/halt -d -f -i -p -h
works without a glitch - libc & co. is already in memory due to running other code, hdparm is read during first pass through the loop, and cat brings /sbin/halt into the memory. And as root filesystem is mounted read-only at that time, there are of course no atime updates pending from these accesses. Best regards, Petr Vandrovec vandrove@vc.cvut.cz - 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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