Subject: Re: [PATCH v2 14/20] mm: Provide speculative fault infrastructure

From: Sergey Senozhatsky <[email-masked]>
Date: Sun, 20 Aug 2017 21:11:55 +0900

On (08/18/17 00:05), Laurent Dufour wrote:
[..]
> +	/*
> +	 * MPOL_INTERLEAVE implies additional check in mpol_misplaced() which
> +	 * are not compatible with the speculative page fault processing.
> +	 */
> +	pol = __get_vma_policy(vma, address);
> +	if (!pol)
> +		pol = get_task_policy(current);
> +	if (pol && pol->mode == MPOL_INTERLEAVE)
> +		goto unlock;

include/linux/mempolicy.h defines

struct mempolicy *get_task_policy(struct task_struct *p);
struct mempolicy *__get_vma_policy(struct vm_area_struct *vma,
		unsigned long addr);

only for CONFIG_NUMA configs.

	-ss