K 10
svn:author
V 3
pjd
K 8
svn:date
V 27
2010-05-16T15:12:34.588941Z
K 7
svn:log
V 288
Add task structure to zio and use it instead of allocating one.
This eliminates the only place where we can sleep when calling zio_interrupt().
As a side-effect this can actually improve performance a little as we
allocate one less thing for every I/O.

Prodded by:	kib
MFC after:	1 week

END