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SubjectRe: [PATCH] locking/test-ww_mutex: use swap()
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On 10/20/21 5:15 AM, cgel.zte@gmail.com wrote:
> From: Changcheng Deng <deng.changcheng@zte.com.cn>
>
> Use swap() in order to make code cleaner. Issue found by coccinelle.
>
> Reported-by: Zeal Robot <zealci@zte.com.cn>
> Signed-off-by: Changcheng Deng <deng.changcheng@zte.com.cn>
> ---
> kernel/locking/test-ww_mutex.c | 9 +++------
> 1 file changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/kernel/locking/test-ww_mutex.c b/kernel/locking/test-ww_mutex.c
> index 353004155d65..fa021b8a9edc 100644
> --- a/kernel/locking/test-ww_mutex.c
> +++ b/kernel/locking/test-ww_mutex.c
> @@ -389,7 +389,7 @@ struct stress {
> static int *get_random_order(int count)
> {
> int *order;
> - int n, r, tmp;
> + int n, r;
>
> order = kmalloc_array(count, sizeof(*order), GFP_KERNEL);
> if (!order)
> @@ -400,11 +400,8 @@ static int *get_random_order(int count)
>
> for (n = count - 1; n > 1; n--) {
> r = get_random_int() % (n + 1);
> - if (r != n) {
> - tmp = order[n];
> - order[n] = order[r];
> - order[r] = tmp;
> - }
> + if (r != n)
> + swap(order[n], order[r]);
> }
>
> return order;

Acked-by: Waiman Long <longman@redhat.com>

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