update the range of submits_queues, and correct usage hints. Signed-off-by: weiping zhang <zhangweip...@didichuxing.com> --- Documentation/block/null_blk.txt | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/Documentation/block/null_blk.txt b/Documentation/block/null_blk.txt index 3140dbd860d8..1f8d92c70458 100644 --- a/Documentation/block/null_blk.txt +++ b/Documentation/block/null_blk.txt @@ -55,10 +55,10 @@ irqmode=[0-2]: Default: 1-Soft-irq completion_nsec=[ns]: Default: 10.000ns Combined with irqmode=2 (timer). The time each completion event must wait. -submit_queues=[0..nr_cpus]: +submit_queues=[1..nr_cpus]: The number of submission queues attached to the device driver. If unset, it - defaults to 1 on single-queue and bio-based instances. For multi-queue, - it is ignored when use_per_node_hctx module parameter is 1. + defaults to 1. For multi-queue, it is ignored when use_per_node_hctx module + parameter is 1. hw_queue_depth=[0..qdepth]: Default: 64 The hardware queue depth of the device. -- 2.14.2
