mm: use self-explanatory macros rather than "2"
Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alex Shi <alex.shi@linux.alibaba.com>
Link: http://lkml.kernel.org/r/20200831175042.3527153-2-yuzhao@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index c27fb1f..7e0ea3f 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -266,6 +266,8 @@ static inline bool is_active_lru(enum lru_list lru)
return (lru == LRU_ACTIVE_ANON || lru == LRU_ACTIVE_FILE);
}
+#define ANON_AND_FILE 2
+
enum lruvec_flags {
LRUVEC_CONGESTED, /* lruvec has many dirty pages
* backed by a congested BDI
@@ -283,8 +285,8 @@ struct lruvec {
unsigned long file_cost;
/* Non-resident age, driven by LRU movement */
atomic_long_t nonresident_age;
- /* Refaults at the time of last reclaim cycle, anon=0, file=1 */
- unsigned long refaults[2];
+ /* Refaults at the time of last reclaim cycle */
+ unsigned long refaults[ANON_AND_FILE];
/* Various lruvec state flags (enum lruvec_flags) */
unsigned long flags;
#ifdef CONFIG_MEMCG
@@ -441,6 +443,8 @@ enum zone_type {
#ifndef __GENERATING_BOUNDS_H
+#define ASYNC_AND_SYNC 2
+
struct zone {
/* Read-mostly fields */
@@ -560,8 +564,8 @@ struct zone {
#if defined CONFIG_COMPACTION || defined CONFIG_CMA
/* pfn where compaction free scanner should start */
unsigned long compact_cached_free_pfn;
- /* pfn where async and sync compaction migration scanner should start */
- unsigned long compact_cached_migrate_pfn[2];
+ /* pfn where compaction migration scanner should start */
+ unsigned long compact_cached_migrate_pfn[ASYNC_AND_SYNC];
unsigned long compact_init_migrate_pfn;
unsigned long compact_init_free_pfn;
#endif