block: add io timeout to sysfs (65cd1d13) · Commits · 戴 / test

block/blk-sysfs.c

+27 −0

Original line number	Diff line number	Diff line
		@@ -417,6 +417,26 @@ static ssize_t queue_poll_store(struct request_queue q, const char page,
		return ret;
		}

		static ssize_t queue_io_timeout_show(struct request_queue q, char page)
		{
		return sprintf(page, "%u\n", jiffies_to_msecs(q->rq_timeout));
		}

		static ssize_t queue_io_timeout_store(struct request_queue q, const char page,
		size_t count)
		{
		unsigned int val;
		int err;

		err = kstrtou32(page, 10, &val);
		if (err \|\| val == 0)
		return -EINVAL;

		blk_queue_rq_timeout(q, msecs_to_jiffies(val));

		return count;
		}

		static ssize_t queue_wb_lat_show(struct request_queue q, char page)
		{
		if (!wbt_rq_qos(q))
		@@ -685,6 +705,12 @@ static struct queue_sysfs_entry queue_dax_entry = {
		.show = queue_dax_show,
		};

		static struct queue_sysfs_entry queue_io_timeout_entry = {
		.attr = {.name = "io_timeout", .mode = 0644 },
		.show = queue_io_timeout_show,
		.store = queue_io_timeout_store,
		};

		static struct queue_sysfs_entry queue_wb_lat_entry = {
		.attr = {.name = "wbt_lat_usec", .mode = 0644 },
		.show = queue_wb_lat_show,
		@@ -734,6 +760,7 @@ static struct attribute *default_attrs[] = {
		&queue_dax_entry.attr,
		&queue_wb_lat_entry.attr,
		&queue_poll_delay_entry.attr,
		&queue_io_timeout_entry.attr,
		#ifdef CONFIG_BLK_DEV_THROTTLING_LOW
		&throtl_sample_time_entry.attr,
		#endif