Simplify free_page()
Simplify free_page()

Both read and mmap do the same thing except the mmap version
needs to unmap the page on free. The condition should hold
the mmap version.

Signed-off-by: Steven Rostedt <43232e92d70cc7aa53504ad0397085ee47bad87f@goodmis.org>

bigzz/trace-cmd,bigzz/trace-cmd