146 /* calculate cursor difference between old and new, where old <= new and
150 				union smc_host_cursor *old,  in smc_curs_diff()  argument
153 	if (old->wrap != new->wrap)  in smc_curs_diff()
155 			     ((size - old->count) + new->count));  in smc_curs_diff()
157 	return max_t(int, 0, (new->count - old->count));  in smc_curs_diff()
160 /* calculate cursor difference between old and new - returns negative
161  * value in case old > new
164 				union smc_host_cursor *old,  in smc_curs_comp()  argument
167 	if (old->wrap > new->wrap ||  in smc_curs_comp()
168 	    (old->wrap == new->wrap && old->count > new->count))  in smc_curs_comp()
169 		return -smc_curs_diff(size, new, old);  in smc_curs_comp()
170 	return smc_curs_diff(size, old, new);  in smc_curs_comp()
173 /* calculate cursor difference between old and new, where old <= new and
177 				      union smc_host_cursor *old,  in smc_curs_diff_large()  argument
180 	if (old->wrap < new->wrap)  in smc_curs_diff_large()
182 			     (size - old->count) + new->count +  in smc_curs_diff_large()
183 			     (new->wrap - old->wrap - 1) * size,  in smc_curs_diff_large()
186 	if (old->wrap > new->wrap) /* wrap has switched from 0xffff to 0x0000 */  in smc_curs_diff_large()
188 			     (size - old->count) + new->count +  in smc_curs_diff_large()
189 			     (new->wrap + 0xffff - old->wrap) * size,  in smc_curs_diff_large()
192 	return max_t(int, 0, (new->count - old->count));  in smc_curs_diff_large()
226 	union smc_host_cursor temp, old;  in smc_cdc_cursor_to_host()  local
229 	smc_curs_copy(&old, local, conn);  in smc_cdc_cursor_to_host()
233 	if ((old.wrap > temp.wrap) && temp.wrap)  in smc_cdc_cursor_to_host()
235 	if ((old.wrap == temp.wrap) &&  in smc_cdc_cursor_to_host()
236 	    (old.count > temp.count))  in smc_cdc_cursor_to_host()