find_or_create_page9
Locate or add a pagecache page
Usage
struct page * find_or_create_page(struct address_space * mapping, pgoff_t index, gfp_t gfp_mask);
Arguments
mapping
the page's address_space
index
the page's index into the mapping
gfp_mask
page allocation mode
Overview
Locates a page in the pagecache. If the page is not present, a new page is allocated using gfp_mask and is added to the pagecache and to the VM's LRU list. The returned page is locked and has its reference count incremented.
find_or_create_page may sleep, even if gfp_flags specifies an atomic allocation!
find_or_create_page returns the desired page's address, or zero on memory exhaustion.
Releases
4 releases since Debian 4.0 (Etch); the text changed 3 times.