[PATCH 1/2] block: update documentation for blk_rq_timeout()

[Julian Wiedmann <jwi@linux.ibm.com>]

Requests don't have their own timers anymore, they share the queue's
timer instead.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
---
 block/blk-timeout.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index 1b8de0417fc1..61430575cb58 100644
--- a/block/blk-timeout.c
+++ b/block/blk-timeout.c
@@ -122,8 +122,8 @@ unsigned long blk_rq_timeout(unsigned long timeout)
  * @req:	request that is about to start running.
  *
  * Notes:
- *    Each request has its own timer, and as it is added to the queue, we
- *    set up the timer. When the request completes, we cancel the timer.
+ *    Each request has its own timeout. As a request is added to the queue,
+ *    we start/adjust the queue's timer to keep track of the earliest timeout.
  */
 void blk_add_timer(struct request *req)
 {
-- 
2.17.1