READ_CACHE_PAGE_GFP(9) Memory Management in Linux READ_CACHE_PAGE_GFP(9)NAMEread_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.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 READ_CACHE_PAGE_GFP(9)