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Diffstat (limited to 'include/linux/mmzone.h')
-rw-r--r--include/linux/mmzone.h11
1 files changed, 7 insertions, 4 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index dcf1b66a96ab..5b4bfb90fb94 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -269,10 +269,10 @@ enum zone_watermarks {
NR_WMARK
};
-#define min_wmark_pages(z) (z->_watermark[WMARK_MIN])
-#define low_wmark_pages(z) (z->_watermark[WMARK_LOW])
-#define high_wmark_pages(z) (z->_watermark[WMARK_HIGH])
-#define wmark_pages(z, i) (z->_watermark[i])
+#define min_wmark_pages(z) (z->_watermark[WMARK_MIN] + z->watermark_boost)
+#define low_wmark_pages(z) (z->_watermark[WMARK_LOW] + z->watermark_boost)
+#define high_wmark_pages(z) (z->_watermark[WMARK_HIGH] + z->watermark_boost)
+#define wmark_pages(z, i) (z->_watermark[i] + z->watermark_boost)
struct per_cpu_pages {
int count; /* number of pages in the list */
@@ -364,6 +364,7 @@ struct zone {
/* zone watermarks, access with *_wmark_pages(zone) macros */
unsigned long _watermark[NR_WMARK];
+ unsigned long watermark_boost;
unsigned long nr_reserved_highatomic;
@@ -890,6 +891,8 @@ static inline int is_highmem(struct zone *zone)
struct ctl_table;
int min_free_kbytes_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
+int watermark_boost_factor_sysctl_handler(struct ctl_table *, int,
+ void __user *, size_t *, loff_t *);
int watermark_scale_factor_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES];