Re: [RFC v3 2/3] mm: make optimistic check for swapin readahead

["Kirill A. Shutemov" <kirill@shutemov.name>]

On Mon, Jul 13, 2015 at 11:28:03PM +0300, Ebru Akagunduz wrote:
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index 595edd9..b4cef9d 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -24,6 +24,7 @@
>  #include <linux/migrate.h>
>  #include <linux/hashtable.h>
>  #include <linux/userfaultfd_k.h>
> +#include <linux/swapops.h>
>  
>  #include <asm/tlb.h>
>  #include <asm/pgalloc.h>
> @@ -2671,11 +2672,11 @@ static int khugepaged_scan_pmd(struct mm_struct *mm,
>  {
>  	pmd_t *pmd;
>  	pte_t *pte, *_pte;
> -	int ret = 0, none_or_zero = 0;
> +	int ret = 0, none_or_zero = 0, unmapped = 0;
>  	struct page *page = NULL;
>  	unsigned long _address;
>  	spinlock_t *ptl;
> -	int node = NUMA_NO_NODE;
> +	int node = NUMA_NO_NODE, max_ptes_swap = HPAGE_PMD_NR/8;

So, you've decide to ignore knob request for max_ptes_swap.
Why?

-- 
 Kirill A. Shutemov

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