diff options
Diffstat (limited to 'include/linux/gfp.h')
| -rw-r--r-- | include/linux/gfp.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h index f8ffcd401c5f..7e93a9ae7064 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -104,6 +104,18 @@ struct vm_area_struct; /* 4GB DMA on some platforms */ #define GFP_DMA32 __GFP_DMA32 +/* Convert GFP flags to their corresponding migrate type */ +static inline int allocflags_to_migratetype(gfp_t gfp_flags) +{ + WARN_ON((gfp_flags & GFP_MOVABLE_MASK) == GFP_MOVABLE_MASK); + + if (unlikely(page_group_by_mobility_disabled)) + return MIGRATE_UNMOVABLE; + + /* Group based on mobility */ + return (((gfp_flags & __GFP_MOVABLE) != 0) << 1) | + ((gfp_flags & __GFP_RECLAIMABLE) != 0); +} static inline enum zone_type gfp_zone(gfp_t flags) { |