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-rw-r--r--include/linux/mmzone.h38
1 files changed, 3 insertions, 35 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 0d12c3cf1f86..b5c21122c299 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -418,20 +418,9 @@ extern struct pglist_data contig_page_data;
418 418
419#endif /* !CONFIG_NEED_MULTIPLE_NODES */ 419#endif /* !CONFIG_NEED_MULTIPLE_NODES */
420 420
421static inline struct pglist_data *first_online_pgdat(void) 421extern struct pglist_data *first_online_pgdat(void);
422{ 422extern struct pglist_data *next_online_pgdat(struct pglist_data *pgdat);
423 return NODE_DATA(first_online_node); 423extern struct zone *next_zone(struct zone *zone);
424}
425
426static inline struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
427{
428 int nid = next_online_node(pgdat->node_id);
429
430 if (nid == MAX_NUMNODES)
431 return NULL;
432 return NODE_DATA(nid);
433}
434
435 424
436/** 425/**
437 * for_each_pgdat - helper macro to iterate over all nodes 426 * for_each_pgdat - helper macro to iterate over all nodes
@@ -441,27 +430,6 @@ static inline struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
441 for (pgdat = first_online_pgdat(); \ 430 for (pgdat = first_online_pgdat(); \
442 pgdat; \ 431 pgdat; \
443 pgdat = next_online_pgdat(pgdat)) 432 pgdat = next_online_pgdat(pgdat))
444
445/*
446 * next_zone - helper magic for for_each_zone()
447 * Thanks to William Lee Irwin III for this piece of ingenuity.
448 */
449static inline struct zone *next_zone(struct zone *zone)
450{
451 pg_data_t *pgdat = zone->zone_pgdat;
452
453 if (zone < pgdat->node_zones + MAX_NR_ZONES - 1)
454 zone++;
455 else {
456 pgdat = next_online_pgdat(pgdat);
457 if (pgdat)
458 zone = pgdat->node_zones;
459 else
460 zone = NULL;
461 }
462 return zone;
463}
464
465/** 433/**
466 * for_each_zone - helper macro to iterate over all memory zones 434 * for_each_zone - helper macro to iterate over all memory zones
467 * @zone - pointer to struct zone variable 435 * @zone - pointer to struct zone variable