142 	unsigned long		thresh;		/* dirty threshold */  member
404 	unsigned long thresh;  in domain_dirty_limits()  local
429 		thresh = DIV_ROUND_UP(bytes, PAGE_SIZE);  in domain_dirty_limits()
431 		thresh = (ratio * available_memory) / PAGE_SIZE;  in domain_dirty_limits()
438 	if (bg_thresh >= thresh)  in domain_dirty_limits()
439 		bg_thresh = thresh / 2;  in domain_dirty_limits()
443 		thresh += thresh / 4 + global_wb_domain.dirty_limit / 32;  in domain_dirty_limits()
445 	dtc->thresh = thresh;  in domain_dirty_limits()
450 		trace_global_dirty_state(bg_thresh, thresh);  in domain_dirty_limits()
469 	*pdirty = gdtc.thresh;  in global_dirty_limits()
713 static unsigned long dirty_freerun_ceiling(unsigned long thresh,  in dirty_freerun_ceiling()  argument
716 	return (thresh + bg_thresh) / 2;  in dirty_freerun_ceiling()
720 				      unsigned long thresh)  in hard_dirty_limit()  argument
722 	return max(thresh, dom->dirty_limit);  in hard_dirty_limit()
764 	unsigned long thresh = dtc->thresh;  in __wb_calc_thresh()  local
775 	wb_thresh = (thresh * (100 - bdi_min_ratio)) / 100;  in __wb_calc_thresh()
781 	wb_thresh += (thresh * wb_min_ratio) / 100;  in __wb_calc_thresh()
782 	if (wb_thresh > (thresh * wb_max_ratio) / 100)  in __wb_calc_thresh()
783 		wb_thresh = thresh * wb_max_ratio / 100;  in __wb_calc_thresh()
788 unsigned long wb_calc_thresh(struct bdi_writeback *wb, unsigned long thresh)  in wb_calc_thresh()  argument
791 					       .thresh = thresh };  in wb_calc_thresh()
905 	unsigned long freerun = dirty_freerun_ceiling(dtc->thresh, dtc->bg_thresh);  in wb_position_ratio()
906 	unsigned long limit = hard_dirty_limit(dtc_dom(dtc), dtc->thresh);  in wb_position_ratio()
1030 	if (unlikely(wb_thresh > dtc->thresh))  in wb_position_ratio()
1031 		wb_thresh = dtc->thresh;  in wb_position_ratio()
1044 	x = div_u64((u64)wb_thresh << 16, dtc->thresh | 1);  in wb_position_ratio()
1054 	span = (dtc->thresh - wb_thresh + 8 * write_bw) * (u64)x >> 16;  in wb_position_ratio()
1133 	unsigned long thresh = dtc->thresh;  in update_dirty_limit()  local
1139 	if (limit < thresh) {  in update_dirty_limit()
1140 		limit = thresh;  in update_dirty_limit()
1149 	thresh = max(thresh, dtc->dirty);  in update_dirty_limit()
1150 	if (limit > thresh) {  in update_dirty_limit()
1151 		limit -= (limit - thresh) >> 5;  in update_dirty_limit()
1190 	unsigned long freerun = dirty_freerun_ceiling(dtc->thresh, dtc->bg_thresh);  in wb_update_dirty_ratelimit()
1191 	unsigned long limit = hard_dirty_limit(dtc_dom(dtc), dtc->thresh);  in wb_update_dirty_ratelimit()
1408 					 unsigned long thresh)  in dirty_poll_interval()  argument
1410 	if (thresh > dirty)  in dirty_poll_interval()
1411 		return 1UL << (ilog2(thresh - dirty) >> 1);  in dirty_poll_interval()
1529 	dtc->wb_bg_thresh = dtc->thresh ?  in wb_dirty_limits()
1530 		div_u64((u64)dtc->wb_thresh * dtc->bg_thresh, dtc->thresh) : 0;  in wb_dirty_limits()
1582 		unsigned long dirty, thresh, bg_thresh;  in balance_dirty_pages()  local
1597 			thresh = gdtc->wb_thresh;  in balance_dirty_pages()
1601 			thresh = gdtc->thresh;  in balance_dirty_pages()
1626 				m_thresh = mdtc->thresh;  in balance_dirty_pages()
1646 		if (dirty <= dirty_freerun_ceiling(thresh, bg_thresh) &&  in balance_dirty_pages()
1653 			intv = dirty_poll_interval(dirty, thresh);  in balance_dirty_pages()
1688 			((gdtc->dirty > gdtc->thresh) || strictlimit);  in balance_dirty_pages()
1715 				((mdtc->dirty > mdtc->thresh) || strictlimit);  in balance_dirty_pages()
1759 						  sdtc->thresh,  in balance_dirty_pages()
1788 					  sdtc->thresh,  in balance_dirty_pages()
1955 	unsigned long thresh;  in wb_over_bg_thresh()  local
1968 	thresh = wb_calc_thresh(gdtc->wb, gdtc->bg_thresh);  in wb_over_bg_thresh()
1969 	if (thresh < 2 * wb_stat_error())  in wb_over_bg_thresh()
1974 	if (reclaimable > thresh)  in wb_over_bg_thresh()
1988 		thresh = wb_calc_thresh(mdtc->wb, mdtc->bg_thresh);  in wb_over_bg_thresh()
1989 		if (thresh < 2 * wb_stat_error())  in wb_over_bg_thresh()
1994 		if (reclaimable > thresh)  in wb_over_bg_thresh()