>so here is my proposed fix to this problem.
>There are a few interface changes:
>- amap_extend() gains a flags parameter, can be either M_NOWAIT or M_WAITOK
>  (amap_extend() use malloc)

yes, amap_extend() uses malloc, but at the same time, it will only get
called from a process context when extending an amap.  kernel map
entries don't use amaps.

i haven't really looked closely at the raid autoconfig stuff, but i
don't think it involves a "process", so this part seems like an
unnecessary change.

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