134 	unsigned long		thresh;		/* dirty threshold */  member
386 	unsigned long thresh;  in domain_dirty_limits()  local
411 		thresh = DIV_ROUND_UP(bytes, PAGE_SIZE);  in domain_dirty_limits()
413 		thresh = (ratio * available_memory) / PAGE_SIZE;  in domain_dirty_limits()
423 		thresh += thresh / 4 + global_wb_domain.dirty_limit / 32;  in domain_dirty_limits()
429 	if (thresh > UINT_MAX)  in domain_dirty_limits()
430 		thresh = UINT_MAX;  in domain_dirty_limits()
432 	if (bg_thresh >= thresh)  in domain_dirty_limits()
433 		bg_thresh = thresh / 2;  in domain_dirty_limits()
434 	dtc->thresh = thresh;  in domain_dirty_limits()
439 		trace_global_dirty_state(bg_thresh, thresh);  in domain_dirty_limits()
458 	*pdirty = gdtc.thresh;  in global_dirty_limits()
843 static unsigned long dirty_freerun_ceiling(unsigned long thresh,  in dirty_freerun_ceiling()  argument
846 	return (thresh + bg_thresh) / 2;  in dirty_freerun_ceiling()
850 				      unsigned long thresh)  in hard_dirty_limit()  argument
852 	return max(thresh, dom->dirty_limit);  in hard_dirty_limit()
923 				      unsigned long thresh)  in __wb_calc_thresh()  argument
938 	wb_thresh = (thresh * (100 * BDI_RATIO_SCALE - bdi_min_ratio)) / (100 * BDI_RATIO_SCALE);  in __wb_calc_thresh()
944 	wb_thresh += (thresh * wb_min_ratio) / (100 * BDI_RATIO_SCALE);  in __wb_calc_thresh()
953 	if (thresh > dtc->dirty) {  in __wb_calc_thresh()
955 			wb_thresh = max(wb_thresh, (thresh - dtc->dirty) / 100);  in __wb_calc_thresh()
957 			wb_thresh = max(wb_thresh, (thresh - dtc->dirty) / 8);  in __wb_calc_thresh()
960 	wb_max_thresh = thresh * wb_max_ratio / (100 * BDI_RATIO_SCALE);  in __wb_calc_thresh()
967 unsigned long wb_calc_thresh(struct bdi_writeback *wb, unsigned long thresh)  in wb_calc_thresh()  argument
972 	return __wb_calc_thresh(&gdtc, thresh);  in wb_calc_thresh()
984 	return __wb_calc_thresh(&mdtc, mdtc.thresh);  in cgwb_calc_thresh()
1097 	unsigned long freerun = dirty_freerun_ceiling(dtc->thresh, dtc->bg_thresh);  in wb_position_ratio()
1098 	unsigned long limit = hard_dirty_limit(dtc_dom(dtc), dtc->thresh);  in wb_position_ratio()
1216 	if (unlikely(wb_thresh > dtc->thresh))  in wb_position_ratio()
1217 		wb_thresh = dtc->thresh;  in wb_position_ratio()
1222 	x = div_u64((u64)wb_thresh << 16, dtc->thresh | 1);  in wb_position_ratio()
1232 	span = (dtc->thresh - wb_thresh + 8 * write_bw) * (u64)x >> 16;  in wb_position_ratio()
1311 	unsigned long thresh = dtc->thresh;  in update_dirty_limit()  local
1317 	if (limit < thresh) {  in update_dirty_limit()
1318 		limit = thresh;  in update_dirty_limit()
1327 	thresh = max(thresh, dtc->dirty);  in update_dirty_limit()
1328 	if (limit > thresh) {  in update_dirty_limit()
1329 		limit -= (limit - thresh) >> 5;  in update_dirty_limit()
1368 	unsigned long freerun = dirty_freerun_ceiling(dtc->thresh, dtc->bg_thresh);  in wb_update_dirty_ratelimit()
1369 	unsigned long limit = hard_dirty_limit(dtc_dom(dtc), dtc->thresh);  in wb_update_dirty_ratelimit()
1590 					 unsigned long thresh)  in dirty_poll_interval()  argument
1592 	if (thresh > dirty)  in dirty_poll_interval()
1593 		return 1UL << (ilog2(thresh - dirty) >> 1);  in dirty_poll_interval()
1710 	dtc->wb_thresh = __wb_calc_thresh(dtc, dtc->thresh);  in wb_dirty_limits()
1711 	dtc->wb_bg_thresh = dtc->thresh ?  in wb_dirty_limits()
1712 		div_u64((u64)dtc->wb_thresh * dtc->bg_thresh, dtc->thresh) : 0;  in wb_dirty_limits()
1736 	unsigned long dirty, thresh;  in domain_poll_intv()  local
1740 		thresh = dtc->wb_thresh;  in domain_poll_intv()
1743 		thresh = dtc->thresh;  in domain_poll_intv()
1746 	return dirty_poll_interval(dirty, thresh);  in domain_poll_intv()
1761 	unsigned long dirty, thresh, bg_thresh;  in domain_dirty_freerun()  local
1766 		thresh = dtc->wb_thresh;  in domain_dirty_freerun()
1770 		thresh = dtc->thresh;  in domain_dirty_freerun()
1773 	dtc->freerun = dirty <= dirty_freerun_ceiling(thresh, bg_thresh);  in domain_dirty_freerun()
1809 		((dtc->dirty > dtc->thresh) || strictlimit);  in wb_dirty_exceeded()
1965 						  sdtc->thresh,  in balance_dirty_pages()
1994 					  sdtc->thresh,  in balance_dirty_pages()