Re: [PATCH v2 1/1] mm/page_isolation: fix clang deadcode warning

[David Hildenbrand]

On 21.10.22 07:19, Maria Yu wrote:
> When !CONFIG_VM_BUG_ON, there is warning of
> clang-analyzer-deadcode.DeadStores:
> Value stored to 'mt' during its initialization
> is never read.
>
> Signed-off-by: Maria Yu <quic_aiquny@xxxxxxxxxxx>
> ---
>   mm/page_isolation.c | 5 ++---
>   1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/mm/page_isolation.c b/mm/page_isolation.c
> index 04141a9bea70..a7a478a22123 100644
> --- a/mm/page_isolation.c
> +++ b/mm/page_isolation.c
> @@ -330,9 +330,8 @@ static int isolate_single_pageblock(unsigned long boundary_pfn, int flags,
>   				      zone->zone_start_pfn);
>   
>   	if (skip_isolation) {
> -		int mt = get_pageblock_migratetype(pfn_to_page(isolate_pageblock));

__maybe_unused should work as well. Was that considered?

--
Thanks,

David / dhildenb