mm: use self-explanatory macros rather than "2"

[sfrench/cifs-2.6.git] / include / linux / mmzone.h

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index c27fb1faffe5de0c9679a15bca00e5b2c1778695..7e0ea3fe95cabdf18f6e0bc34755f8c21cf72cbe 100644 (file)
--- 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