memory management with mmap

Hi All I am trying to experiment a memory management - allocate memory segments in Kernel space (junk of memory segments using page allocation) so that different user process can use/access it(read/write) using mmap. For example, I have 2 different user space process A,B etc. I have to allocate memory in Kernel for each of those processes (for example 2 pages) . Each process is allowed to use only 1 page using mmap from user space. Is it possible to do with mmap?. -- Regards, S. Sengottuvelan.