read_cache_page_gfp — read into page cache, using specified page allocation flags.
struct page * read_cache_page_gfp ( | struct address_space * mapping, |
| pgoff_t index, | |
gfp_t gfp); |
mappingthe page's address_space
indexthe page index
gfpthe page allocator flags to use if allocating
This is the same as “read_mapping_page(mapping, index, NULL)”, but with any new page allocations done using the specified allocation flags. Note that the Radix tree operations will still use GFP_KERNEL, so you can't expect to do this atomically or anything like that - but you can pass in other page requirements.
If the page does not get brought uptodate, return -EIO.