Name

filemap_nopage — read in file data for page fault handling

Synopsis

struct page * filemap_nopage (struct vm_area_struct * area,
 unsigned long address,
 int * type);
 

Arguments

area

the applicable vm_area

address

target address to read in

type

returned with VM_FAULT_{MINOR,MAJOR} if not NULL

Description

filemap_nopage is invoked via the vma operations vector for a mapped memory region to read in file data during a page fault.

The goto's are kind of ugly, but this streamlines the normal case of having it in the page cache, and handles the special cases reasonably without having a lot of duplicated code.