Re: [PATCH 4/4] mm/memory: convert do_read_fault() to use folios

[Matthew Wilcox]

On Sun, Jul 02, 2023 at 10:58:50PM -0700, Sidhartha Kumar wrote:
> +++ b/mm/memory.c
> @@ -4528,6 +4528,7 @@ static inline bool should_fault_around(struct vm_fault *vmf)
>  static vm_fault_t do_read_fault(struct vm_fault *vmf)
>  {
>  	vm_fault_t ret = 0;
> +	struct folio *folio = page_folio(vmf->page);

Similarly, vmf->page is not initialised until after __do_fault().