From: Paolo Valente <paolo.valente@linaro.org>
Date: Mon, 3 Feb 2020 10:41:00 +0000 (+0100)
Subject: block, bfq: clarify the goal of bfq_split_bfqq()
X-Git-Tag: v5.6-rc1~49^2~2
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=c92bddee77353a773f0df76115c1a01877ce1eae;p=users%2Fjedix%2Flinux-maple.git

block, bfq: clarify the goal of bfq_split_bfqq()

The exact, general goal of the function bfq_split_bfqq() is not that
apparent. Add a comment to make it clear.

Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index fff76c920968..8c436abfaf14 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -5979,6 +5979,8 @@ static void bfq_finish_requeue_request(struct request *rq)
 }
 
 /*
+ * Removes the association between the current task and bfqq, assuming
+ * that bic points to the bfq iocontext of the task.
  * Returns NULL if a new bfqq should be allocated, or the old bfqq if this
  * was the last process referring to that bfqq.
  */