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-rw-r--r--mm/page-writeback.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index e31dea9..c95eb24 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -881,6 +881,9 @@ static void wb_update_write_bandwidth(struct bdi_writeback *wb,
avg += (old - avg) >> 3;
out:
+ if (wb_has_dirty_io(wb))
+ atomic_long_add(avg - wb->avg_write_bandwidth,
+ &wb->bdi->tot_write_bandwidth);
wb->write_bandwidth = bw;
wb->avg_write_bandwidth = avg;
}
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