Alan Cox 42d5624e1f o Stop calling useracc() in (o)sendsig() now that we use copyout()
to copy the sigframe to the user's stack.  Useracc() takes a non-trivial
   amount of time.  Eliminating it speeds up signal delivery by 15% or more.
 o Update some comments.

Submitted by:	bde
2002-03-17 04:21:19 +00:00
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