Re: [PATCH 1/1] virtio-blk: add num_io_queues module parameter
From: Christoph Hellwig <hch@infradead.org>
Date: 2021-08-30 16:49:28
Also in:
linux-block, virtualization
On Mon, Aug 30, 2021 at 03:00:23PM +0300, Max Gurtovoy wrote:
+static int virtblk_queue_count_set(const char *val,
+ const struct kernel_param *kp)
+{
+ unsigned int n;
+ int ret;
+
+ ret = kstrtouint(val, 10, &n);
+ if (ret != 0 || n > nr_cpu_ids)
+ return -EINVAL;
+ return param_set_uint(val, kp);
+}Thi can use param_set_uint_minmax.