On Fri, Jun 20, 2014 at 05:49:40PM +0200, Vlastimil Babka wrote:
> From: David Rientjes <[email protected]>
> 
> The page allocator has gfp flags (like __GFP_WAIT) and alloc flags (like
> ALLOC_CPUSET) that have separate semantics.
> 
> The function allocflags_to_migratetype() actually takes gfp flags, not alloc
> flags, and returns a migratetype.  Rename it to gfpflags_to_migratetype().
> 
> Signed-off-by: David Rientjes <[email protected]>
> Signed-off-by: Vlastimil Babka <[email protected]>
> Reviewed-by: Zhang Yanfei <[email protected]>
> Acked-by: Minchan Kim <[email protected]>
> Cc: Mel Gorman <[email protected]>
> Cc: Joonsoo Kim <[email protected]>
> Cc: Michal Nazarewicz <[email protected]>
> Cc: Naoya Horiguchi <[email protected]>
> Cc: Christoph Lameter <[email protected]>
> Cc: Rik van Riel <[email protected]>

Reviewed-by: Naoya Horiguchi <[email protected]>

> ---
>  include/linux/gfp.h | 2 +-
>  mm/compaction.c     | 4 ++--
>  mm/page_alloc.c     | 6 +++---
>  3 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/include/linux/gfp.h b/include/linux/gfp.h
> index 5e7219d..41b30fd 100644
> --- a/include/linux/gfp.h
> +++ b/include/linux/gfp.h
> @@ -156,7 +156,7 @@ struct vm_area_struct;
>  #define GFP_DMA32    __GFP_DMA32
>  
>  /* Convert GFP flags to their corresponding migrate type */
> -static inline int allocflags_to_migratetype(gfp_t gfp_flags)
> +static inline int gfpflags_to_migratetype(const gfp_t gfp_flags)
>  {
>       WARN_ON((gfp_flags & GFP_MOVABLE_MASK) == GFP_MOVABLE_MASK);
>  
> diff --git a/mm/compaction.c b/mm/compaction.c
> index df0961b..32c768b 100644
> --- a/mm/compaction.c
> +++ b/mm/compaction.c
> @@ -1185,7 +1185,7 @@ static unsigned long compact_zone_order(struct zone 
> *zone, int order,
>               .nr_freepages = 0,
>               .nr_migratepages = 0,
>               .order = order,
> -             .migratetype = allocflags_to_migratetype(gfp_mask),
> +             .migratetype = gfpflags_to_migratetype(gfp_mask),
>               .zone = zone,
>               .mode = mode,
>       };
> @@ -1237,7 +1237,7 @@ unsigned long try_to_compact_pages(struct zonelist 
> *zonelist,
>  
>       *deferred = true;
>  #ifdef CONFIG_CMA
> -     if (allocflags_to_migratetype(gfp_mask) == MIGRATE_MOVABLE)
> +     if (gfpflags_to_migratetype(gfp_mask) == MIGRATE_MOVABLE)
>               alloc_flags |= ALLOC_CMA;
>  #endif
>       /* Compact each zone in the list */
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 6593f79..70b8297 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -2473,7 +2473,7 @@ gfp_to_alloc_flags(gfp_t gfp_mask)
>                       alloc_flags |= ALLOC_NO_WATERMARKS;
>       }
>  #ifdef CONFIG_CMA
> -     if (allocflags_to_migratetype(gfp_mask) == MIGRATE_MOVABLE)
> +     if (gfpflags_to_migratetype(gfp_mask) == MIGRATE_MOVABLE)
>               alloc_flags |= ALLOC_CMA;
>  #endif
>       return alloc_flags;
> @@ -2716,7 +2716,7 @@ __alloc_pages_nodemask(gfp_t gfp_mask, unsigned int 
> order,
>       struct zone *preferred_zone;
>       struct zoneref *preferred_zoneref;
>       struct page *page = NULL;
> -     int migratetype = allocflags_to_migratetype(gfp_mask);
> +     int migratetype = gfpflags_to_migratetype(gfp_mask);
>       unsigned int cpuset_mems_cookie;
>       int alloc_flags = ALLOC_WMARK_LOW|ALLOC_CPUSET|ALLOC_FAIR;
>       int classzone_idx;
> @@ -2750,7 +2750,7 @@ retry_cpuset:
>       classzone_idx = zonelist_zone_idx(preferred_zoneref);
>  
>  #ifdef CONFIG_CMA
> -     if (allocflags_to_migratetype(gfp_mask) == MIGRATE_MOVABLE)
> +     if (gfpflags_to_migratetype(gfp_mask) == MIGRATE_MOVABLE)
>               alloc_flags |= ALLOC_CMA;
>  #endif
>  retry:
> -- 
> 1.8.4.5
> 
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