The wb_calc_thresh will calculate wb's share in global wb domain. We need
to wb's share in mem_cgroup_wb_domain for mdtc. Call __wb_calc_thresh
instead of wb_calc_thresh to fix this.
Fixes: 74d369443325 ("writeback: Fix performance regression in wb_over_bg_thresh()")
Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
---
mm/page-writeback.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 9268859722c4..f6c7f3b0f495 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -2118,7 +2118,7 @@ bool wb_over_bg_thresh(struct bdi_writeback *wb)
if (mdtc->dirty > mdtc->bg_thresh)
return true;
- thresh = wb_calc_thresh(mdtc->wb, mdtc->bg_thresh);
+ thresh = __wb_calc_thresh(mdtc, mdtc->bg_thresh);
if (thresh < 2 * wb_stat_error())
reclaimable = wb_stat_sum(wb, WB_RECLAIMABLE);
else
--
2.30.0
