Re: [PATCH v5 1/3] kernel/resource: Allow region_intersects users to hold resource_lock

[David Hildenbrand]

On 19.04.21 09:01, Alistair Popple wrote:
> Introduce a version of region_intersects() that can be called with the
> resource_lock already held. This is used in a future fix to
> __request_free_mem_region().
>
> Signed-off-by: Alistair Popple <apopple@xxxxxxxxxx>
> ---
>   kernel/resource.c | 52 ++++++++++++++++++++++++++++-------------------
>   1 file changed, 31 insertions(+), 21 deletions(-)
>
> diff --git a/kernel/resource.c b/kernel/resource.c
> index 627e61b0c124..736768587d2d 100644
> --- a/kernel/resource.c
> +++ b/kernel/resource.c
> @@ -523,6 +523,34 @@ int __weak page_is_ram(unsigned long pfn)
>   }
>   EXPORT_SYMBOL_GPL(page_is_ram);
>   
> +int __region_intersects(resource_size_t start, size_t size, unsigned long flags,
> +			unsigned long desc)
> +{
> +	struct resource res;

I'd do

struct resource res, *p;

Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>


--
Thanks,

David / dhildenb