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-rw-r--r--block/blk-mq-debugfs.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index 9547569aa619..bd21d5b9f65f 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -206,11 +206,27 @@ static ssize_t queue_write_hint_store(void *data, const char __user *buf,
return count;
}
+static int queue_zone_wlock_show(void *data, struct seq_file *m)
+{
+ struct request_queue *q = data;
+ unsigned int i;
+
+ if (!q->seq_zones_wlock)
+ return 0;
+
+ for (i = 0; i < blk_queue_nr_zones(q); i++)
+ if (test_bit(i, q->seq_zones_wlock))
+ seq_printf(m, "%u\n", i);
+
+ return 0;
+}
+
static const struct blk_mq_debugfs_attr blk_mq_debugfs_queue_attrs[] = {
{ "poll_stat", 0400, queue_poll_stat_show },
{ "requeue_list", 0400, .seq_ops = &queue_requeue_list_seq_ops },
{ "state", 0600, queue_state_show, queue_state_write },
{ "write_hints", 0600, queue_write_hint_show, queue_write_hint_store },
+ { "zone_wlock", 0400, queue_zone_wlock_show, NULL },
{ },
};