get_unmapped_area handles MAP_FIXED on parisc

get_unmapped_area handles MAP_FIXED on parisc

Handle MAP_FIXED in parisc arch_get_unmapped_area(), just return the address.
We might want to also check for possible cache aliasing issues now that we get
called in that case (like ARM or MIPS), leave a comment for the maintainers to
pick up.

Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Cc: Kyle McMartin <[email protected]>
Cc: Grant Grundler <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>