134 	unsigned long		thresh;		/* dirty threshold */  member
384 	unsigned long thresh;  in domain_dirty_limits()  local
409 		thresh = DIV_ROUND_UP(bytes, PAGE_SIZE);  in domain_dirty_limits()
411 		thresh = (ratio * available_memory) / PAGE_SIZE;  in domain_dirty_limits()
418 	if (bg_thresh >= thresh)  in domain_dirty_limits()
419 		bg_thresh = thresh / 2;  in domain_dirty_limits()
423 		thresh += thresh / 4 + global_wb_domain.dirty_limit / 32;  in domain_dirty_limits()
425 	dtc->thresh = thresh;  in domain_dirty_limits()
430 		trace_global_dirty_state(bg_thresh, thresh);  in domain_dirty_limits()
449 	*pdirty = gdtc.thresh;  in global_dirty_limits()
813 static unsigned long dirty_freerun_ceiling(unsigned long thresh,  in dirty_freerun_ceiling()  argument
816 	return (thresh + bg_thresh) / 2;  in dirty_freerun_ceiling()
820 				      unsigned long thresh)  in hard_dirty_limit()  argument
822 	return max(thresh, dom->dirty_limit);  in hard_dirty_limit()
865 				      unsigned long thresh)  in __wb_calc_thresh()  argument
878 	wb_thresh = (thresh * (100 * BDI_RATIO_SCALE - bdi_min_ratio)) / (100 * BDI_RATIO_SCALE);  in __wb_calc_thresh()
884 	wb_thresh += (thresh * wb_min_ratio) / (100 * BDI_RATIO_SCALE);  in __wb_calc_thresh()
885 	if (wb_thresh > (thresh * wb_max_ratio) / (100 * BDI_RATIO_SCALE))  in __wb_calc_thresh()
886 		wb_thresh = thresh * wb_max_ratio / (100 * BDI_RATIO_SCALE);  in __wb_calc_thresh()
891 unsigned long wb_calc_thresh(struct bdi_writeback *wb, unsigned long thresh)  in wb_calc_thresh()  argument
895 	return __wb_calc_thresh(&gdtc, thresh);  in wb_calc_thresh()
914 	return __wb_calc_thresh(&mdtc, mdtc.thresh);  in cgwb_calc_thresh()
1027 	unsigned long freerun = dirty_freerun_ceiling(dtc->thresh, dtc->bg_thresh);  in wb_position_ratio()
1028 	unsigned long limit = hard_dirty_limit(dtc_dom(dtc), dtc->thresh);  in wb_position_ratio()
1152 	if (unlikely(wb_thresh > dtc->thresh))  in wb_position_ratio()
1153 		wb_thresh = dtc->thresh;  in wb_position_ratio()
1166 	x = div_u64((u64)wb_thresh << 16, dtc->thresh | 1);  in wb_position_ratio()
1176 	span = (dtc->thresh - wb_thresh + 8 * write_bw) * (u64)x >> 16;  in wb_position_ratio()
1255 	unsigned long thresh = dtc->thresh;  in update_dirty_limit()  local
1261 	if (limit < thresh) {  in update_dirty_limit()
1262 		limit = thresh;  in update_dirty_limit()
1271 	thresh = max(thresh, dtc->dirty);  in update_dirty_limit()
1272 	if (limit > thresh) {  in update_dirty_limit()
1273 		limit -= (limit - thresh) >> 5;  in update_dirty_limit()
1312 	unsigned long freerun = dirty_freerun_ceiling(dtc->thresh, dtc->bg_thresh);  in wb_update_dirty_ratelimit()
1313 	unsigned long limit = hard_dirty_limit(dtc_dom(dtc), dtc->thresh);  in wb_update_dirty_ratelimit()
1541 					 unsigned long thresh)  in dirty_poll_interval()  argument
1543 	if (thresh > dirty)  in dirty_poll_interval()
1544 		return 1UL << (ilog2(thresh - dirty) >> 1);  in dirty_poll_interval()
1661 	dtc->wb_thresh = __wb_calc_thresh(dtc, dtc->thresh);  in wb_dirty_limits()
1662 	dtc->wb_bg_thresh = dtc->thresh ?  in wb_dirty_limits()
1663 		div64_u64(dtc->wb_thresh * dtc->bg_thresh, dtc->thresh) : 0;  in wb_dirty_limits()
1716 		unsigned long dirty, thresh, bg_thresh;  in balance_dirty_pages()  local
1731 			thresh = gdtc->wb_thresh;  in balance_dirty_pages()
1735 			thresh = gdtc->thresh;  in balance_dirty_pages()
1760 				m_thresh = mdtc->thresh;  in balance_dirty_pages()
1790 		if (dirty <= dirty_freerun_ceiling(thresh, bg_thresh) &&  in balance_dirty_pages()
1797 			intv = dirty_poll_interval(dirty, thresh);  in balance_dirty_pages()
1833 			((gdtc->dirty > gdtc->thresh) || strictlimit);  in balance_dirty_pages()
1860 				((mdtc->dirty > mdtc->thresh) || strictlimit);  in balance_dirty_pages()
1901 						  sdtc->thresh,  in balance_dirty_pages()
1930 					  sdtc->thresh,  in balance_dirty_pages()
2107 	unsigned long thresh;  in wb_over_bg_thresh()  local
2120 	thresh = __wb_calc_thresh(gdtc, gdtc->bg_thresh);  in wb_over_bg_thresh()
2121 	if (thresh < 2 * wb_stat_error())  in wb_over_bg_thresh()
2126 	if (reclaimable > thresh)  in wb_over_bg_thresh()
2140 		thresh = __wb_calc_thresh(mdtc, mdtc->bg_thresh);  in wb_over_bg_thresh()
2141 		if (thresh < 2 * wb_stat_error())  in wb_over_bg_thresh()
2146 		if (reclaimable > thresh)  in wb_over_bg_thresh()