READ_CACHE_PAGE(9) Memory Management in Linux 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
first arg to filler(data, page) function, often left as NULL
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.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 READ_CACHE_PAGE(9)
