[PATCH] arm: flush: check if the folio is reserved for IMO addresses

[Matthew Wilcox]

On Thu, Feb 22, 2024 at 10:01:47PM +0800, Yongqiang Liu wrote:
> @@ -296,6 +297,9 @@ void __sync_icache_dcache(pte_t pteval)
>  		return;
>  
>  	folio = page_folio(pfn_to_page(pfn));
> +	if (test_bit(PG_reserved, &folio->flags))
> +		return;

Why are you using PG_foo directly instead of the helpers?

	if (folio_test_reserved(folio))