diff options
Diffstat (limited to 'block/blk-wbt.c')
| -rw-r--r-- | block/blk-wbt.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/block/blk-wbt.c b/block/blk-wbt.c index b3b79149d3a0..26e1bb617877 100644 --- a/block/blk-wbt.c +++ b/block/blk-wbt.c @@ -665,6 +665,25 @@ void wbt_disable_default(struct request_queue *q) } EXPORT_SYMBOL_GPL(wbt_disable_default); +/* + * Enable wbt if defaults are configured that way + */ +void wbt_enable_default(struct request_queue *q) +{ + /* Throttling already enabled? */ + if (q->rq_wb) + return; + + /* Queue not registered? Maybe shutting down... */ + if (!test_bit(QUEUE_FLAG_REGISTERED, &q->queue_flags)) + return; + + if ((q->mq_ops && IS_ENABLED(CONFIG_BLK_WBT_MQ)) || + (q->request_fn && IS_ENABLED(CONFIG_BLK_WBT_SQ))) + wbt_init(q); +} +EXPORT_SYMBOL_GPL(wbt_enable_default); + u64 wbt_default_latency_nsec(struct request_queue *q) { /* |