Re: Bug in knfsd unlink.

Alan Cox (alan@lxorguk.ukuu.org.uk)
Tue, 16 Feb 1999 13:09:32 +0000 (GMT)

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> 1. have a user daemon make a system call periodically.
> 2. have a user daemon send a signal periodically
> 3. have the kernel call a subroutine periodically.
>
> To me 3. is the best solution, but I don't know how to set
> an alarm in the kernel.
>
> I'll keep looking.

#3 is easy to do, but raises other questions. Notably it needs to wake
something up not play with the cache from an interrupt, at least by
my reading of the code.

(See include/linux/timer.h) - init_timer/add_timer/del_timer.

net/appletalk/aarp.c has a good example of playing with timers
(aarp_proto_init etc)

Alan

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