Re: [PATCH] userfaultfd/selftests: use swap() instead of open coding it

[Muchun Song]

On Thu, Apr 07, 2022 at 08:31:41PM +0800, Guo Zhengkui wrote:
> Address the following coccicheck warning:
> 
> tools/testing/selftests/vm/userfaultfd.c:1536:21-22: WARNING opportunity
> for swap().
> tools/testing/selftests/vm/userfaultfd.c:1540:33-34: WARNING opportunity
> for swap().
> 
> by using swap() for the swapping of variable values and drop
> `tmp_area` that is not needed any more.
> 
> `swap()` macro in userfaultfd.c is introduced in commit 681696862bc18
> ("selftests: vm: remove dependecy from internal kernel macros")
> 
> It has been tested with gcc (Debian 8.3.0-6) 8.3.0.
> 
> Signed-off-by: Guo Zhengkui <guozhengkui@xxxxxxxx>

Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>

Thanks.