2021-08-30 09:15:45

by Geert Uytterhoeven

[permalink] [raw]
Subject: [PATCH] block/mq-deadline: Move dd_queued() to fix defined but not used warning

If CONFIG_BLK_DEBUG_FS=n:

block/mq-deadline.c:274:12: warning: ‘dd_queued’ defined but not used [-Wunused-function]
274 | static u32 dd_queued(struct deadline_data *dd, enum dd_prio prio)
| ^~~~~~~~~

Fix this by moving dd_queued() just before the sole function that calls
it.

Fixes: 7b05bf771084ff78 ("Revert "block/mq-deadline: Prioritize high-priority requests"")
Signed-off-by: Geert Uytterhoeven <[email protected]>
---
v2:
- Fix prefix in one-line summary.
---
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 36920670dccc35f3..c2c724d4e668ebea 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])
@@ -951,6 +945,12 @@ static int dd_async_depth_show(void *data, struct seq_file *m)
return 0;
}

+/* 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 dd_queued_show(void *data, struct seq_file *m)
{
struct request_queue *q = data;
--
2.25.1


2021-08-30 23:25:58

by Bart Van Assche

[permalink] [raw]
Subject: Re: [PATCH] block/mq-deadline: Move dd_queued() to fix defined but not used warning

On 8/30/21 2:11 AM, Geert Uytterhoeven wrote:
> If CONFIG_BLK_DEBUG_FS=n:
>
> block/mq-deadline.c:274:12: warning: ‘dd_queued’ defined but not used [-Wunused-function]
> 274 | static u32 dd_queued(struct deadline_data *dd, enum dd_prio prio)
> | ^~~~~~~~~
>
> Fix this by moving dd_queued() just before the sole function that calls
> it.
>
> Fixes: 7b05bf771084ff78 ("Revert "block/mq-deadline: Prioritize high-priority requests"")
> Signed-off-by: Geert Uytterhoeven <[email protected]>

The Fixes tag probably should be changed into the following:

Fixes: 38ba64d12d4c ("block/mq-deadline: Track I/O statistics")

Anyway:

Reviewed-by: Bart Van Assche <[email protected]>

2021-09-02 12:42:17

by Jens Axboe

[permalink] [raw]
Subject: Re: [PATCH] block/mq-deadline: Move dd_queued() to fix defined but not used warning

On 8/30/21 3:11 AM, Geert Uytterhoeven wrote:
> If CONFIG_BLK_DEBUG_FS=n:
>
> block/mq-deadline.c:274:12: warning: ‘dd_queued’ defined but not used [-Wunused-function]
> 274 | static u32 dd_queued(struct deadline_data *dd, enum dd_prio prio)
> | ^~~~~~~~~
>
> Fix this by moving dd_queued() just before the sole function that calls
> it.

Applied, thanks.

--
Jens Axboe

2021-09-06 03:43:54

by Stephen Rothwell

[permalink] [raw]
Subject: Re: [PATCH] block/mq-deadline: Move dd_queued() to fix defined but not used warning

Hi Jens,

On Thu, 2 Sep 2021 06:35:47 -0600 Jens Axboe <[email protected]> wrote:
>
> On 8/30/21 3:11 AM, Geert Uytterhoeven wrote:
> > If CONFIG_BLK_DEBUG_FS=n:
> >
> > block/mq-deadline.c:274:12: warning: ‘dd_queued’ defined but not used [-Wunused-function]
> > 274 | static u32 dd_queued(struct deadline_data *dd, enum dd_prio prio)
> > | ^~~~~~~~~
> >
> > Fix this by moving dd_queued() just before the sole function that calls
> > it.
>
> Applied, thanks.

Can we get this to Linus ASAP as he has now made warnings fatal, so
this is causing lots of build failures.

--
Cheers,
Stephen Rothwell


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2021-09-06 03:50:06

by Jens Axboe

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Subject: Re: [PATCH] block/mq-deadline: Move dd_queued() to fix defined but not used warning

On 9/5/21 8:56 PM, Stephen Rothwell wrote:
> Hi Jens,
>
> On Thu, 2 Sep 2021 06:35:47 -0600 Jens Axboe <[email protected]> wrote:
>>
>> On 8/30/21 3:11 AM, Geert Uytterhoeven wrote:
>>> If CONFIG_BLK_DEBUG_FS=n:
>>>
>>> block/mq-deadline.c:274:12: warning: ‘dd_queued’ defined but not used [-Wunused-function]
>>> 274 | static u32 dd_queued(struct deadline_data *dd, enum dd_prio prio)
>>> | ^~~~~~~~~
>>>
>>> Fix this by moving dd_queued() just before the sole function that calls
>>> it.
>>
>> Applied, thanks.
>
> Can we get this to Linus ASAP as he has now made warnings fatal, so
> this is causing lots of build failures.

Sure, it's actually the only branch I haven't sent off yet today. Will
do so now.

--
Jens Axboe

2021-09-06 07:23:43

by Stephen Rothwell

[permalink] [raw]
Subject: Re: [PATCH] block/mq-deadline: Move dd_queued() to fix defined but not used warning

Hi Jens,

On Sun, 5 Sep 2021 21:04:17 -0600 Jens Axboe <[email protected]> wrote:
>
> Sure, it's actually the only branch I haven't sent off yet today. Will
> do so now.

Excellent, thanks.

--
Cheers,
Stephen Rothwell


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