diff options
Diffstat (limited to 'include/linux/mmzone.h')
| -rw-r--r-- | include/linux/mmzone.h | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index f4bfe824834..bad9486ee0c 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -7,6 +7,7 @@ #include <linux/spinlock.h> #include <linux/list.h> #include <linux/wait.h> +#include <linux/bitops.h> #include <linux/cache.h> #include <linux/threads.h> #include <linux/numa.h> @@ -262,10 +263,7 @@ struct zone { unsigned long nr_scan_active; unsigned long nr_scan_inactive; unsigned long pages_scanned; /* since last reclaim */ - int all_unreclaimable; /* All pages pinned */ - - /* A count of how many reclaimers are scanning this zone */ - atomic_t reclaim_in_progress; + unsigned long flags; /* zone flags, see below */ /* Zone statistics */ atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS]; @@ -343,6 +341,29 @@ struct zone { const char *name; } ____cacheline_internodealigned_in_smp; +typedef enum { + ZONE_ALL_UNRECLAIMABLE, /* all pages pinned */ + ZONE_RECLAIM_LOCKED, /* prevents concurrent reclaim */ +} zone_flags_t; + +static inline void zone_set_flag(struct zone *zone, zone_flags_t flag) +{ + set_bit(flag, &zone->flags); +} +static inline void zone_clear_flag(struct zone *zone, zone_flags_t flag) +{ + clear_bit(flag, &zone->flags); +} + +static inline int zone_is_all_unreclaimable(const struct zone *zone) +{ + return test_bit(ZONE_ALL_UNRECLAIMABLE, &zone->flags); +} +static inline int zone_is_reclaim_locked(const struct zone *zone) +{ + return test_bit(ZONE_RECLAIM_LOCKED, &zone->flags); +} + /* * The "priority" of VM scanning is how much of the queues we will scan in one * go. A value of 12 for DEF_PRIORITY implies that we will scan 1/4096th of the |