Add a missing splx() to aio_fphysio().  (This change is a no-op in -5.0,  but potentially significant in -4.x.)
Add a missing splx() to aio_fphysio().  (This change is a no-op in -5.0,
 but potentially significant in -4.x.)

Eliminate a pointless parameter to aio_fphysio().

Remove unnecessary casts from aio_fphysio() and aio_physwakeup().

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