Re: raid5d, page_launder and scheduling latency

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Sat Jul 14 2001 - 11:34:03 EST


> Happily, we've just fixed the four most gross sources of poor
> interactivity in the kernel, so let's knock over some of the others as
> well - a few /proc functions. That mainly leaves zap_page_range() and
> exit() with a lot of open files.

Nowhere near it. We have to fix copy_*_user and strlen_user (there are reasons
2.2 uses strnlen_user). Map the same page into 2Gig of address space filled with
non zero bytes. Map a zero terminator on the end of it. Pass pointers to this
for all your args and do an exec().

Alan

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