49 static struct page *__page_frag_cache_refill(struct page_frag_cache *nc,  in __page_frag_cache_refill()  argument
67 	nc->encoded_page = page ?  in __page_frag_cache_refill()
73 void page_frag_cache_drain(struct page_frag_cache *nc)  in page_frag_cache_drain()  argument
75 	if (!nc->encoded_page)  in page_frag_cache_drain()
78 	__page_frag_cache_drain(encoded_page_decode_page(nc->encoded_page),  in page_frag_cache_drain()
79 				nc->pagecnt_bias);  in page_frag_cache_drain()
80 	nc->encoded_page = 0;  in page_frag_cache_drain()
93 void *__page_frag_alloc_align(struct page_frag_cache *nc,  in __page_frag_alloc_align()  argument
97 	unsigned long encoded_page = nc->encoded_page;  in __page_frag_alloc_align()
103 		page = __page_frag_cache_refill(nc, gfp_mask);  in __page_frag_alloc_align()
107 		encoded_page = nc->encoded_page;  in __page_frag_alloc_align()
115 		nc->pagecnt_bias = PAGE_FRAG_CACHE_MAX_SIZE + 1;  in __page_frag_alloc_align()
116 		nc->offset = 0;  in __page_frag_alloc_align()
120 	offset = __ALIGN_KERNEL_MASK(nc->offset, ~align_mask);  in __page_frag_alloc_align()
137 		if (!page_ref_sub_and_test(page, nc->pagecnt_bias))  in __page_frag_alloc_align()
150 		nc->pagecnt_bias = PAGE_FRAG_CACHE_MAX_SIZE + 1;  in __page_frag_alloc_align()
154 	nc->pagecnt_bias--;  in __page_frag_alloc_align()
155 	nc->offset = offset + fragsz;  in __page_frag_alloc_align()