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-rw-r--r--include/linux/mmzone.h51
1 files changed, 29 insertions, 22 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index c60df9257cc7..02069c23486d 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -85,13 +85,6 @@ extern int page_group_by_mobility_disabled;
get_pfnblock_flags_mask(page, page_to_pfn(page), \
PB_migrate_end, MIGRATETYPE_MASK)
-static inline int get_pfnblock_migratetype(struct page *page, unsigned long pfn)
-{
- BUILD_BUG_ON(PB_migrate_end - PB_migrate != 2);
- return get_pfnblock_flags_mask(page, pfn, PB_migrate_end,
- MIGRATETYPE_MASK);
-}
-
struct free_area {
struct list_head free_list[MIGRATE_TYPES];
unsigned long nr_free;
@@ -746,8 +739,12 @@ static inline bool is_dev_zone(const struct zone *zone)
extern struct mutex zonelists_mutex;
void build_all_zonelists(pg_data_t *pgdat, struct zone *zone);
void wakeup_kswapd(struct zone *zone, int order, enum zone_type classzone_idx);
+bool __zone_watermark_ok(struct zone *z, unsigned int order, unsigned long mark,
+ int classzone_idx, unsigned int alloc_flags,
+ long free_pages);
bool zone_watermark_ok(struct zone *z, unsigned int order,
- unsigned long mark, int classzone_idx, int alloc_flags);
+ unsigned long mark, int classzone_idx,
+ unsigned int alloc_flags);
bool zone_watermark_ok_safe(struct zone *z, unsigned int order,
unsigned long mark, int classzone_idx);
enum memmap_context {
@@ -828,10 +825,7 @@ static inline int is_highmem_idx(enum zone_type idx)
static inline int is_highmem(struct zone *zone)
{
#ifdef CONFIG_HIGHMEM
- int zone_off = (char *)zone - (char *)zone->zone_pgdat->node_zones;
- return zone_off == ZONE_HIGHMEM * sizeof(*zone) ||
- (zone_off == ZONE_MOVABLE * sizeof(*zone) &&
- zone_movable_is_highmem());
+ return is_highmem_idx(zone_idx(zone));
#else
return 0;
#endif
@@ -922,6 +916,10 @@ static inline int zonelist_node_idx(struct zoneref *zoneref)
#endif /* CONFIG_NUMA */
}
+struct zoneref *__next_zones_zonelist(struct zoneref *z,
+ enum zone_type highest_zoneidx,
+ nodemask_t *nodes);
+
/**
* next_zones_zonelist - Returns the next zone at or below highest_zoneidx within the allowed nodemask using a cursor within a zonelist as a starting point
* @z - The cursor used as a starting point for the search
@@ -934,9 +932,14 @@ static inline int zonelist_node_idx(struct zoneref *zoneref)
* being examined. It should be advanced by one before calling
* next_zones_zonelist again.
*/
-struct zoneref *next_zones_zonelist(struct zoneref *z,
+static __always_inline struct zoneref *next_zones_zonelist(struct zoneref *z,
enum zone_type highest_zoneidx,
- nodemask_t *nodes);
+ nodemask_t *nodes)
+{
+ if (likely(!nodes && zonelist_zone_idx(z) <= highest_zoneidx))
+ return z;
+ return __next_zones_zonelist(z, highest_zoneidx, nodes);
+}
/**
* first_zones_zonelist - Returns the first zone at or below highest_zoneidx within the allowed nodemask in a zonelist
@@ -952,13 +955,10 @@ struct zoneref *next_zones_zonelist(struct zoneref *z,
*/
static inline struct zoneref *first_zones_zonelist(struct zonelist *zonelist,
enum zone_type highest_zoneidx,
- nodemask_t *nodes,
- struct zone **zone)
+ nodemask_t *nodes)
{
- struct zoneref *z = next_zones_zonelist(zonelist->_zonerefs,
+ return next_zones_zonelist(zonelist->_zonerefs,
highest_zoneidx, nodes);
- *zone = zonelist_zone(z);
- return z;
}
/**
@@ -973,10 +973,17 @@ static inline struct zoneref *first_zones_zonelist(struct zonelist *zonelist,
* within a given nodemask
*/
#define for_each_zone_zonelist_nodemask(zone, z, zlist, highidx, nodemask) \
- for (z = first_zones_zonelist(zlist, highidx, nodemask, &zone); \
+ for (z = first_zones_zonelist(zlist, highidx, nodemask), zone = zonelist_zone(z); \
+ zone; \
+ z = next_zones_zonelist(++z, highidx, nodemask), \
+ zone = zonelist_zone(z))
+
+#define for_next_zone_zonelist_nodemask(zone, z, zlist, highidx, nodemask) \
+ for (zone = z->zone; \
zone; \
z = next_zones_zonelist(++z, highidx, nodemask), \
- zone = zonelist_zone(z)) \
+ zone = zonelist_zone(z))
+
/**
* for_each_zone_zonelist - helper macro to iterate over valid zones in a zonelist at or below a given zone index
@@ -1056,7 +1063,7 @@ struct mem_section {
unsigned long *pageblock_flags;
#ifdef CONFIG_PAGE_EXTENSION
/*
- * If !SPARSEMEM, pgdat doesn't have page_ext pointer. We use
+ * If SPARSEMEM, pgdat doesn't have page_ext pointer. We use
* section. (see page_ext.h about this.)
*/
struct page_ext *page_ext;