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Diffstat (limited to 'include/linux/page_counter.h')
-rw-r--r--include/linux/page_counter.h26
1 files changed, 20 insertions, 6 deletions
diff --git a/include/linux/page_counter.h b/include/linux/page_counter.h
index c15ab80ad32d..bab7e57f659b 100644
--- a/include/linux/page_counter.h
+++ b/include/linux/page_counter.h
@@ -7,10 +7,22 @@
#include <asm/page.h>
struct page_counter {
- atomic_long_t count;
- unsigned long limit;
+ atomic_long_t usage;
+ unsigned long min;
+ unsigned long low;
+ unsigned long max;
struct page_counter *parent;
+ /* effective memory.min and memory.min usage tracking */
+ unsigned long emin;
+ atomic_long_t min_usage;
+ atomic_long_t children_min_usage;
+
+ /* effective memory.low and memory.low usage tracking */
+ unsigned long elow;
+ atomic_long_t low_usage;
+ atomic_long_t children_low_usage;
+
/* legacy */
unsigned long watermark;
unsigned long failcnt;
@@ -25,14 +37,14 @@ struct page_counter {
static inline void page_counter_init(struct page_counter *counter,
struct page_counter *parent)
{
- atomic_long_set(&counter->count, 0);
- counter->limit = PAGE_COUNTER_MAX;
+ atomic_long_set(&counter->usage, 0);
+ counter->max = PAGE_COUNTER_MAX;
counter->parent = parent;
}
static inline unsigned long page_counter_read(struct page_counter *counter)
{
- return atomic_long_read(&counter->count);
+ return atomic_long_read(&counter->usage);
}
void page_counter_cancel(struct page_counter *counter, unsigned long nr_pages);
@@ -41,7 +53,9 @@ bool page_counter_try_charge(struct page_counter *counter,
unsigned long nr_pages,
struct page_counter **fail);
void page_counter_uncharge(struct page_counter *counter, unsigned long nr_pages);
-int page_counter_limit(struct page_counter *counter, unsigned long limit);
+void page_counter_set_min(struct page_counter *counter, unsigned long nr_pages);
+void page_counter_set_low(struct page_counter *counter, unsigned long nr_pages);
+int page_counter_set_max(struct page_counter *counter, unsigned long nr_pages);
int page_counter_memparse(const char *buf, const char *max,
unsigned long *nr_pages);