K 10
svn:author
V 8
hselasky
K 8
svn:date
V 27
2017-07-07T13:44:14.317159Z
K 7
svn:log
V 473
Complete r320189 which allows a NULL VM fault handler in the LinuxKPI.
Instead of mapping a dummy page upon a page fault, map the page
pointed to by the physical address given by IDX_TO_OFF(vmap->vm_pfn).
To simplify the implementation use OBJT_DEVICE to implement our own
linux_cdev_pager_fault() instead of using the existing
linux_cdev_pager_populate().

Some minor code factoring while at it.

Reviewed by:	markj @
MFC after:	1 week
Sponsored by:	Mellanox Technologies

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