K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2016-03-31T17:27:30.313717Z
K 7
svn:log
V 270
Tidy up the unmapped I/O code in qphysio.

- Move some blocks around to reduce the number of 'if (unmap)' checks.
- Use 'pbuf == NULL' instead of 'unmap'.
- Use nitems.
- Pull an assignment out of an if expression.

Reviewed by:	kib
Sponsored by:	Chelsio Communications

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