@@ -348,6 +348,26 @@ 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 struct queue_sysfs_entry queue_requests_entry = {
.attr = {.name = "nr_requests", .mode = S_IRUGO | S_IWUSR },
.show = queue_requests_show,
@@ -479,6 +499,12 @@ static struct queue_sysfs_entry queue_poll_entry = {
.store = queue_poll_store,
};
+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 attribute *default_attrs[] = {
&queue_requests_entry.attr,
&queue_ra_entry.attr,
@@ -504,6 +530,7 @@ static struct attribute *default_attrs[] = {
&queue_iostats_entry.attr,
&queue_random_entry.attr,
&queue_poll_entry.attr,
+ &queue_io_timeout_entry.attr,
NULL,
};