read_cache_page(9)
NAME
read_cache_page - read into page cache, fill it if needed
SYNOPSIS
struct page * read_cache_page(struct address_space * mapping,
pgoff_t index,
int (*filler) (void *,struct page*),
void * data);
ARGUMENTS
- mapping
- the page´s address_space
- index
- the page index
- filler
- function to perform the read
- data
- destination for read data
DESCRIPTION
Read into the page cache. If a page already exists, and PageUptodate is
not set, try to fill the page then wait for it to become unlocked.
If the page does not get brought uptodate, return -EIO.