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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>
This commit is contained in:
Yu Zhao 2020-10-15 20:09:55 -07:00 committed by Linus Torvalds
parent 955cc774f2
commit ed0173733d
3 changed files with 10 additions and 6 deletions
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12
include/linux/mmzone.h
View File

@ -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

2
include/linux/vmstat.h
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@ -28,7 +28,7 @@ struct reclaim_stat {
unsigned nr_writeback;
unsigned nr_immediate;
unsigned nr_pageout;
unsigned nr_activate[2];
unsigned nr_activate[ANON_AND_FILE];
unsigned nr_ref_keep;
unsigned nr_unmap_fail;
unsigned nr_lazyfree_fail;

2
mm/vmscan.c
View File

@ -2239,7 +2239,7 @@ static void get_scan_count(struct lruvec *lruvec, struct scan_control *sc,
struct mem_cgroup *memcg = lruvec_memcg(lruvec);
unsigned long anon_cost, file_cost, total_cost;
int swappiness = mem_cgroup_swappiness(memcg);
u64 fraction[2];
u64 fraction[ANON_AND_FILE];
u64 denominator = 0; /* gcc */
enum scan_balance scan_balance;
unsigned long ap, fp;