Hi, I am trying to create a new virtual memory area for a process (struct vm_area_struct) that is not mapped to a file (ie, vma->vm_file = NULL). I already managed to create a VMA by mapping a file using the do_mmap() function similiar to what is done in SYSV IPC shared memory implementation. But i dont want to create a VMA by memory mapping a file. I want to allocate physical pages by using alloc_pages() and associating those pages with the the VMA that I created. i know how to create a VMA and add it to the process address space, i also know how to allocate physical pages. but not sure of how to setup the physical-virtual page mappings.. could anyone tell me what i am missing here and kernel functions for doing the same. john
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