diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/gfp.h | 12 | ||||
| -rw-r--r-- | include/linux/mmzone.h | 10 |
2 files changed, 22 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) { diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 87a4045580f2..20ea42c45e4a 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -43,6 +43,16 @@ for (order = 0; order < MAX_ORDER; order++) \ for (type = 0; type < MIGRATE_TYPES; type++) +extern int page_group_by_mobility_disabled; + +static inline int get_pageblock_migratetype(struct page *page) +{ + if (unlikely(page_group_by_mobility_disabled)) + return MIGRATE_UNMOVABLE; + + return get_pageblock_flags_group(page, PB_migrate, PB_migrate_end); +} + struct free_area { struct list_head free_list[MIGRATE_TYPES]; unsigned long nr_free; |