diff options
Diffstat (limited to 'include/linux/mmzone.h')
| -rw-r--r-- | include/linux/mmzone.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 078ecb81e209..cfa870107abe 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -93,7 +93,7 @@ struct free_area { struct pglist_data; /* - * zone->lock and zone->lru_lock are two of the hottest locks in the kernel. + * zone->lock and the zone lru_lock are two of the hottest locks in the kernel. * So add a wild amount of padding here to ensure that they fall into separate * cachelines. There are very few zone structures in the machine, so space * consumption is not a concern here. @@ -496,7 +496,6 @@ struct zone { /* Write-intensive fields used by page reclaim */ /* Fields commonly accessed by the page reclaim scanner */ - spinlock_t lru_lock; struct lruvec lruvec; /* @@ -690,6 +689,9 @@ typedef struct pglist_data { /* Number of pages migrated during the rate limiting time interval */ unsigned long numabalancing_migrate_nr_pages; #endif + /* Write-intensive fields used by page reclaim */ + ZONE_PADDING(_pad1_) + spinlock_t lru_lock; #ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT /* @@ -721,6 +723,10 @@ typedef struct pglist_data { #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) #define node_end_pfn(nid) pgdat_end_pfn(NODE_DATA(nid)) +static inline spinlock_t *zone_lru_lock(struct zone *zone) +{ + return &zone->zone_pgdat->lru_lock; +} static inline unsigned long pgdat_end_pfn(pg_data_t *pgdat) { |