31 extern void __page_ref_mod_and_test(struct page *page, int v, int ret);
32 extern void __page_ref_mod_and_return(struct page *page, int v, int ret);
34 extern void __page_ref_freeze(struct page *page, int v, int ret);
47 static inline void __page_ref_mod_and_test(struct page *page, int v, int ret)  in __page_ref_mod_and_test()  argument
50 static inline void __page_ref_mod_and_return(struct page *page, int v, int ret)  in __page_ref_mod_and_return()  argument
56 static inline void __page_ref_freeze(struct page *page, int v, int ret)  in __page_ref_freeze()  argument
107 	int ret = atomic_sub_return(nr, &page->_refcount);  in page_ref_sub_return()  local
110 		__page_ref_mod_and_return(page, -nr, ret);  in page_ref_sub_return()
111 	return ret;  in page_ref_sub_return()
130 	int ret = atomic_sub_and_test(nr, &page->_refcount);  in page_ref_sub_and_test()  local
133 		__page_ref_mod_and_test(page, -nr, ret);  in page_ref_sub_and_test()
134 	return ret;  in page_ref_sub_and_test()
139 	int ret = atomic_inc_return(&page->_refcount);  in page_ref_inc_return()  local
142 		__page_ref_mod_and_return(page, 1, ret);  in page_ref_inc_return()
143 	return ret;  in page_ref_inc_return()
148 	int ret = atomic_dec_and_test(&page->_refcount);  in page_ref_dec_and_test()  local
151 		__page_ref_mod_and_test(page, -1, ret);  in page_ref_dec_and_test()
152 	return ret;  in page_ref_dec_and_test()
157 	int ret = atomic_dec_return(&page->_refcount);  in page_ref_dec_return()  local
160 		__page_ref_mod_and_return(page, -1, ret);  in page_ref_dec_return()
161 	return ret;  in page_ref_dec_return()
166 	int ret = atomic_add_unless(&page->_refcount, nr, u);  in page_ref_add_unless()  local
169 		__page_ref_mod_unless(page, nr, ret);  in page_ref_add_unless()
170 	return ret;  in page_ref_add_unless()
175 	int ret = likely(atomic_cmpxchg(&page->_refcount, count, 0) == count);  in page_ref_freeze()  local
178 		__page_ref_freeze(page, count, ret);  in page_ref_freeze()
179 	return ret;  in page_ref_freeze()