[PATCH 2/2] block: add BLK_DEF_TIMEOUT

[Weiping Zhang]

Add an obvious definition for default request timeout.

Signed-off-by: Weiping Zhang <zhangweip...@didiglobal.com>
---
 block/blk-mq.c | 2 +-
 block/blk.h    | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 900550594651..53337d5c37af 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2845,7 +2845,7 @@ struct request_queue *blk_mq_init_allocated_queue(struct 
blk_mq_tag_set *set,
                goto err_hctxs;
 
        INIT_WORK(&q->timeout_work, blk_mq_timeout_work);
-       blk_queue_rq_timeout(q, set->timeout ? set->timeout : 30 * HZ);
+       blk_queue_rq_timeout(q, set->timeout ? set->timeout : BLK_DEF_TIMEOUT);
 
        q->tag_set = set;
 
diff --git a/block/blk.h b/block/blk.h
index f0d0a18fb276..7905b952b7b3 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -7,6 +7,9 @@
 #include <xen/xen.h>
 #include "blk-mq.h"
 
+/* the default request timeout */
+#define BLK_DEF_TIMEOUT (30 * HZ)
+
 #ifdef CONFIG_DEBUG_FS
 extern struct dentry *blk_debugfs_root;
 #endif
-- 
2.14.1