clang with W=1 reports
drivers/md/raid5.c:7719:6: error: variable 'working_disks'
  set but not used [-Werror,-Wunused-but-set-variable]
        int working_disks = 0;
            ^
This variable is not used so remove it.

Signed-off-by: Tom Rix <trix@redhat.com>
---
 drivers/md/raid5.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 7b820b81d8c2..2b1e78c46817 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -7716,7 +7716,6 @@ static void raid5_set_io_opt(struct r5conf *conf)
 static int raid5_run(struct mddev *mddev)
 {
 	struct r5conf *conf;
-	int working_disks = 0;
 	int dirty_parity_disks = 0;
 	struct md_rdev *rdev;
 	struct md_rdev *journal_dev = NULL;
@@ -7913,7 +7912,6 @@ static int raid5_run(struct mddev *mddev)
 			goto abort;
 		}
 		if (test_bit(In_sync, &rdev->flags)) {
-			working_disks++;
 			continue;
 		}
 		/* This disc is not fully in-sync.  However if it
-- 
2.27.0

Hi,

在 2023/03/26 20:56, Tom Rix 写道:
> clang with W=1 reports
> drivers/md/raid5.c:7719:6: error: variable 'working_disks'
>    set but not used [-Werror,-Wunused-but-set-variable]
>          int working_disks = 0;
>              ^
> This variable is not used so remove it.

Other than some nits below, this patch looks good to me, feel free to
add:

Reviewed-by: Yu Kuai <yukuai3@huawei.com>

Please also mention that commit 908f4fbd2657 ("md/raid5: be more
thorough in calculating 'degraded' value.") remove the last reference.
> 
> Signed-off-by: Tom Rix <trix@redhat.com>
> ---
>   drivers/md/raid5.c | 2 --
>   1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
> index 7b820b81d8c2..2b1e78c46817 100644
> --- a/drivers/md/raid5.c
> +++ b/drivers/md/raid5.c
> @@ -7716,7 +7716,6 @@ static void raid5_set_io_opt(struct r5conf *conf)
>   static int raid5_run(struct mddev *mddev)
>   {
>   	struct r5conf *conf;
> -	int working_disks = 0;
>   	int dirty_parity_disks = 0;
>   	struct md_rdev *rdev;
>   	struct md_rdev *journal_dev = NULL;
> @@ -7913,7 +7912,6 @@ static int raid5_run(struct mddev *mddev)
>   			goto abort;
>   		}
>   		if (test_bit(In_sync, &rdev->flags)) {
> -			working_disks++;
Please remove the braces as well,

Thanks,
Kuai
>   			continue;
>   		}
>   		/* This disc is not fully in-sync.  However if it
>