suse man page for read_cache_page_gfp

READ_CACHE_PAGE_GFP(9)					    Memory Management in Linux					    READ_CACHE_PAGE_GFP(9)

NAME
       read_cache_page_gfp - read into page cache, using specified page allocation flags.

SYNOPSIS
       struct page * read_cache_page_gfp(struct address_space * mapping, pgoff_t index, gfp_t gfp);

ARGUMENTS
       mapping
	   the page's address_space

       index
	   the page index

       gfp
	   the page allocator flags to use if allocating

DESCRIPTION
       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.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010						    READ_CACHE_PAGE_GFP(9)