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.