From: Tang Yizhou <redacted>

In the current implementation, the last_issue and last_comp members of
struct rq_wb are used only by read requests and not by non-throttled write
requests. Therefore, eliminate the ambiguity here.

Signed-off-by: Tang Yizhou <redacted>
---
  block/blk-wbt.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/blk-wbt.c b/block/blk-wbt.c
index 30886d44f6cd..eb8037bae0bd 100644
--- a/block/blk-wbt.c
+++ b/block/blk-wbt.c

@@ -85,8 +85,8 @@ struct rq_wb {
  	u64 sync_issue;
  	void *sync_cookie;
  
-	unsigned long last_issue;		/* last non-throttled issue */
-	unsigned long last_comp;		/* last non-throttled comp */
+	unsigned long last_issue;	/* issue time of last read rq */
+	unsigned long last_comp;	/* completion time of last read rq */
  	unsigned long min_lat_nsec;
  	struct rq_qos rqos;
  	struct rq_wait rq_wait[WBT_NUM_RWQ];