58 #define GET_SWAP_RA_VAL(vma)					\  argument
59 	(atomic_long_read(&(vma)->swap_readahead_info) ? : 4)
331 struct page *lookup_swap_cache(swp_entry_t entry, struct vm_area_struct *vma,  in lookup_swap_cache()  argument
346 		if (vma) {  in lookup_swap_cache()
347 			ra_info = GET_SWAP_RA_VAL(vma);  in lookup_swap_cache()
352 			atomic_long_set(&vma->swap_readahead_info,  in lookup_swap_cache()
357 			if (!vma)  in lookup_swap_cache()
365 			struct vm_area_struct *vma, unsigned long addr,  in __read_swap_cache_async()  argument
398 			new_page = alloc_page_vma(gfp_mask, vma, addr);  in __read_swap_cache_async()
464 		struct vm_area_struct *vma, unsigned long addr, bool do_poll)  in read_swap_cache_async()  argument
468 			vma, addr, &page_was_allocated);  in read_swap_cache_async()
556 			struct vm_area_struct *vma, unsigned long addr)  in swapin_readahead()  argument
582 			gfp_mask, vma, addr, &page_allocated);  in swapin_readahead()
599 	return read_swap_cache_async(entry, gfp_mask, vma, addr, do_poll);  in swapin_readahead()
637 static inline void swap_ra_clamp_pfn(struct vm_area_struct *vma,  in swap_ra_clamp_pfn()  argument
644 	*start = max3(lpfn, PFN_DOWN(vma->vm_start),  in swap_ra_clamp_pfn()
646 	*end = min3(rpfn, PFN_DOWN(vma->vm_end),  in swap_ra_clamp_pfn()
653 	struct vm_area_struct *vma = vmf->vma;  in swap_readahead_detect()  local
676 	page = lookup_swap_cache(entry, vma, faddr);  in swap_readahead_detect()
681 	swap_ra_info = GET_SWAP_RA_VAL(vma);  in swap_readahead_detect()
687 	atomic_long_set(&vma->swap_readahead_info,  in swap_readahead_detect()
695 		swap_ra_clamp_pfn(vma, faddr, fpfn, fpfn + win, &start, &end);  in swap_readahead_detect()
697 		swap_ra_clamp_pfn(vma, faddr, fpfn - win + 1, fpfn + 1,  in swap_readahead_detect()
701 		swap_ra_clamp_pfn(vma, faddr, fpfn - left, fpfn + win - left,  in swap_readahead_detect()
723 	struct vm_area_struct *vma = vmf->vma;  in do_swap_page_readahead()  local
744 		page = __read_swap_cache_async(entry, gfp_mask, vma,  in do_swap_page_readahead()
761 	return read_swap_cache_async(fentry, gfp_mask, vma, vmf->address,  in do_swap_page_readahead()