178 static struct dirty_throttle_control *mdtc_gdtc(struct dirty_throttle_control *mdtc)  in mdtc_gdtc()  argument
180 	return mdtc->gdtc;  in mdtc_gdtc()
232 static struct dirty_throttle_control *mdtc_gdtc(struct dirty_throttle_control *mdtc)  in mdtc_gdtc()  argument
691 static void mdtc_calc_avail(struct dirty_throttle_control *mdtc,  in mdtc_calc_avail()  argument
694 	struct dirty_throttle_control *gdtc = mdtc_gdtc(mdtc);  in mdtc_calc_avail()
695 	unsigned long clean = filepages - min(filepages, mdtc->dirty);  in mdtc_calc_avail()
699 	mdtc->avail = filepages + min(headroom, other_clean);  in mdtc_calc_avail()
1304 				  struct dirty_throttle_control *mdtc,  in __wb_update_bandwidth()  argument
1340 		if (IS_ENABLED(CONFIG_CGROUP_WRITEBACK) && mdtc) {  in __wb_update_bandwidth()
1341 			domain_update_bandwidth(mdtc, now);  in __wb_update_bandwidth()
1342 			wb_update_dirty_ratelimit(mdtc, dirtied, elapsed);  in __wb_update_bandwidth()
1526 	struct dirty_throttle_control * const mdtc = mdtc_valid(&mdtc_stor) ?  in balance_dirty_pages()  local
1574 		if (mdtc) {  in balance_dirty_pages()
1582 					    &mdtc->dirty, &writeback);  in balance_dirty_pages()
1583 			mdtc->dirty += writeback;  in balance_dirty_pages()
1584 			mdtc_calc_avail(mdtc, filepages, headroom);  in balance_dirty_pages()
1586 			domain_dirty_limits(mdtc);  in balance_dirty_pages()
1589 				wb_dirty_limits(mdtc);  in balance_dirty_pages()
1590 				m_dirty = mdtc->wb_dirty;  in balance_dirty_pages()
1591 				m_thresh = mdtc->wb_thresh;  in balance_dirty_pages()
1592 				m_bg_thresh = mdtc->wb_bg_thresh;  in balance_dirty_pages()
1594 				m_dirty = mdtc->dirty;  in balance_dirty_pages()
1595 				m_thresh = mdtc->thresh;  in balance_dirty_pages()
1596 				m_bg_thresh = mdtc->bg_thresh;  in balance_dirty_pages()
1613 		    (!mdtc ||  in balance_dirty_pages()
1620 			if (mdtc)  in balance_dirty_pages()
1642 		if (mdtc) {  in balance_dirty_pages()
1650 				wb_dirty_limits(mdtc);  in balance_dirty_pages()
1652 			dirty_exceeded |= (mdtc->wb_dirty > mdtc->wb_thresh) &&  in balance_dirty_pages()
1653 				((mdtc->dirty > mdtc->thresh) || strictlimit);  in balance_dirty_pages()
1655 			wb_position_ratio(mdtc);  in balance_dirty_pages()
1656 			if (mdtc->pos_ratio < gdtc->pos_ratio)  in balance_dirty_pages()
1657 				sdtc = mdtc;  in balance_dirty_pages()
1666 			__wb_update_bandwidth(gdtc, mdtc, start_time, true);  in balance_dirty_pages()
1887 	struct dirty_throttle_control * const mdtc = mdtc_valid(&mdtc_stor) ?  in wb_over_bg_thresh()  local
1906 	if (mdtc) {  in wb_over_bg_thresh()
1909 		mem_cgroup_wb_stats(wb, &filepages, &headroom, &mdtc->dirty,  in wb_over_bg_thresh()
1911 		mdtc_calc_avail(mdtc, filepages, headroom);  in wb_over_bg_thresh()
1912 		domain_dirty_limits(mdtc);	/* ditto, ignore writeback */  in wb_over_bg_thresh()
1914 		if (mdtc->dirty > mdtc->bg_thresh)  in wb_over_bg_thresh()
1918 		    wb_calc_thresh(mdtc->wb, mdtc->bg_thresh))  in wb_over_bg_thresh()