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-rw-r--r--block/bfq-iosched.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index 12bbc6b8657d..60a6835265fc 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -3483,11 +3483,17 @@ static void bfq_update_wr_data(struct bfq_data *bfqd, struct bfq_queue *bfqq)
}
}
}
- /* Update weight both if it must be raised and if it must be lowered */
+ /*
+ * To improve latency (for this or other queues), immediately
+ * update weight both if it must be raised and if it must be
+ * lowered. Since, entity may be on some active tree here, and
+ * might have a pending change of its ioprio class, invoke
+ * next function with the last parameter unset (see the
+ * comments on the function).
+ */
if ((entity->weight > entity->orig_weight) != (bfqq->wr_coeff > 1))
- __bfq_entity_update_weight_prio(
- bfq_entity_service_tree(entity),
- entity);
+ __bfq_entity_update_weight_prio(bfq_entity_service_tree(entity),
+ entity, false);
}
/*