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null_blk: make sure submit_queues > 0 

set submit_queues to 1 by default, and make sure it's value > 0.

Signed-off-by: weiping zhang <zhangweiping@didichuxing.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
hifive-unleashed-5.1
weiping zhang 2017-08-03 00:27:37 +08:00 committed by Jens Axboe
parent 558ab300c8
commit d424681cc9
1 changed files with 2 additions and 2 deletions
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4
drivers/block/null_blk.c
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@ -65,7 +65,7 @@ enum {
NULL_Q_MQ = 2,
};
static int submit_queues;
static int submit_queues = 1;
module_param(submit_queues, int, S_IRUGO);
MODULE_PARM_DESC(submit_queues, "Number of submission queues");
@ -849,7 +849,7 @@ static int __init null_init(void)
}
} else if (submit_queues > nr_cpu_ids)
submit_queues = nr_cpu_ids;
else if (!submit_queues)
else if (submit_queues <= 0)
submit_queues = 1;
if (queue_mode == NULL_Q_MQ && shared_tags) {