linux-kernel - [PATCH] block/mq-deadline: Fix compilation warning.

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Date:   Thu,  2 Sep 2021 21:20:44 +1000
From:   Imran Khan <imran.f.khan@...cle.com>
To:     axboe@...nel.dk
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] block/mq-deadline: Fix compilation warning.

dd_queued is only being used by show function corresponding to queued
attribute. So compilation without BLK_DEBUG_FS gives unused-function
warning for dd_queued.
Move dd_queued under BLK_DEBUG_FS to fix compilation issue.

Fixes: 7b05bf771084 ("Revert "block/mq-deadline: Prioritize high-priority requests"")

Signed-off-by: Imran Khan <imran.f.khan@...cle.com>
---
 block/mq-deadline.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/block/mq-deadline.c b/block/mq-deadline.c
index 3c3693c34f061..3c45838daf12c 100644
--- a/block/mq-deadline.c
+++ b/block/mq-deadline.c
@@ -270,12 +270,6 @@ deadline_move_request(struct deadline_data *dd, struct dd_per_prio *per_prio,
 	deadline_remove_request(rq->q, per_prio, rq);
 }
 
-/* Number of requests queued for a given priority level. */
-static u32 dd_queued(struct deadline_data *dd, enum dd_prio prio)
-{
-	return dd_sum(dd, inserted, prio) - dd_sum(dd, completed, prio);
-}
-
 /*
  * deadline_check_fifo returns 0 if there are no expired requests on the fifo,
  * 1 otherwise. Requires !list_empty(&dd->fifo_list[data_dir])
@@ -926,6 +920,12 @@ DEADLINE_DEBUGFS_DDIR_ATTRS(DD_IDLE_PRIO, DD_READ, read2);
 DEADLINE_DEBUGFS_DDIR_ATTRS(DD_IDLE_PRIO, DD_WRITE, write2);
 #undef DEADLINE_DEBUGFS_DDIR_ATTRS
 
+/* Number of requests queued for a given priority level. */
+static u32 dd_queued(struct deadline_data *dd, enum dd_prio prio)
+{
+	return dd_sum(dd, inserted, prio) - dd_sum(dd, completed, prio);
+}
+
 static int deadline_batching_show(void *data, struct seq_file *m)
 {
 	struct request_queue *q = data;
-- 
2.30.2