Allocate pages for ps-rx on a skb and preserve pfmemalloc data
struct page * __skb_alloc_pages(gfp_t gfp_mask, struct sk_buff * skb, unsigned int order);
gfp_mask
alloc_pages_node mask. Set __GFP_NOMEMALLOC if not for network packet RX
skb
skb to set pfmemalloc on if __GFP_MEMALLOC is used
order
size of the allocation
Allocate a new page.
NULL is returned if there is no free memory.