K 10
svn:author
V 3
alc
K 8
svn:date
V 27
2003-09-08T02:45:03.000000Z
K 7
svn:log
V 321
Introduce a new pmap function, pmap_extract_and_hold().  This function
atomically extracts and holds the physical page that is associated with the
given pmap and virtual address.  Such a function is needed to make the
memory mapping optimizations used by, for example, pipes and raw disk I/O
MP-safe.

Reviewed by:	tegge

END