Commit f6804743 authored by weiping zhang's avatar weiping zhang Committed by Jens Axboe
Browse files

blk-sysfs: remove NULL pointer checking in queue_wb_lat_store



wbt_init doesn't set q->rq_wb to NULL, if wbt_init return 0,
so check return value is enough, remove NULL checking.
Signed-off-by: default avatarweiping zhang <zhangweiping@didichuxing.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 612ea091
......@@ -450,12 +450,9 @@ static ssize_t queue_wb_lat_store(struct request_queue *q, const char *page,
ret = wbt_init(q);
if (ret)
return ret;
rwb = q->rq_wb;
if (!rwb)
return -EINVAL;
}
rwb = q->rq_wb;
if (val == -1)
rwb->min_lat_nsec = wbt_default_latency_nsec(q);
else if (val >= 0)
......
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