linux-kernel - Re: [PATCH 2/2] hugetlb: rename hugepage_migration_support() to ...

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Date:	Fri, 30 May 2014 05:02:03 -0700 (PDT)
From:	Hugh Dickins <hughd@...gle.com>
To:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Tony Luck <tony.luck@...el.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, trinity@...r.kernel.org
Subject: Re: [PATCH 2/2] hugetlb: rename hugepage_migration_support() to
 ..._supported()

On Fri, 30 May 2014, Naoya Horiguchi wrote:

> We already have a function named hugepage_supported(), and the similar

hugepages_supported()

> name hugepage_migration_support() is a bit unconfortable, so let's rename
> it hugepage_migration_supported().
> 
> Signed-off-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com>

Acked-by: Hugh Dickins <hughd@...gle.com>

> ---
>  include/linux/hugetlb.h | 4 ++--
>  mm/hugetlb.c            | 2 +-
>  mm/migrate.c            | 2 +-
>  3 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git v3.15-rc5.orig/include/linux/hugetlb.h v3.15-rc5/include/linux/hugetlb.h
> index c9de64cf288d..9d35e514312b 100644
> --- v3.15-rc5.orig/include/linux/hugetlb.h
> +++ v3.15-rc5/include/linux/hugetlb.h
> @@ -385,7 +385,7 @@ static inline pgoff_t basepage_index(struct page *page)
>  
>  extern void dissolve_free_huge_pages(unsigned long start_pfn,
>  				     unsigned long end_pfn);
> -static inline int hugepage_migration_support(struct hstate *h)
> +static inline int hugepage_migration_supported(struct hstate *h)
>  {
>  #ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
>  	return huge_page_shift(h) == PMD_SHIFT;
> @@ -441,7 +441,7 @@ static inline pgoff_t basepage_index(struct page *page)
>  	return page->index;
>  }
>  #define dissolve_free_huge_pages(s, e)	do {} while (0)
> -#define hugepage_migration_support(h)	0
> +#define hugepage_migration_supported(h)	0
>  
>  static inline spinlock_t *huge_pte_lockptr(struct hstate *h,
>  					   struct mm_struct *mm, pte_t *pte)
> diff --git v3.15-rc5.orig/mm/hugetlb.c v3.15-rc5/mm/hugetlb.c
> index ea42b584661a..83d936d12c1d 100644
> --- v3.15-rc5.orig/mm/hugetlb.c
> +++ v3.15-rc5/mm/hugetlb.c
> @@ -545,7 +545,7 @@ static struct page *dequeue_huge_page_node(struct hstate *h, int nid)
>  /* Movability of hugepages depends on migration support. */
>  static inline gfp_t htlb_alloc_mask(struct hstate *h)
>  {
> -	if (hugepages_treat_as_movable || hugepage_migration_support(h))
> +	if (hugepages_treat_as_movable || hugepage_migration_supported(h))
>  		return GFP_HIGHUSER_MOVABLE;
>  	else
>  		return GFP_HIGHUSER;
> diff --git v3.15-rc5.orig/mm/migrate.c v3.15-rc5/mm/migrate.c
> index bed48809e5d0..15b589ae6aaf 100644
> --- v3.15-rc5.orig/mm/migrate.c
> +++ v3.15-rc5/mm/migrate.c
> @@ -1031,7 +1031,7 @@ static int unmap_and_move_huge_page(new_page_t get_new_page,
>  	 * tables or check whether the hugepage is pmd-based or not before
>  	 * kicking migration.
>  	 */
> -	if (!hugepage_migration_support(page_hstate(hpage))) {
> +	if (!hugepage_migration_supported(page_hstate(hpage))) {
>  		putback_active_hugepage(hpage);
>  		return -ENOSYS;
>  	}
> -- 
> 1.9.3
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