diff options
Diffstat (limited to 'include/linux/page_counter.h')
| -rw-r--r-- | include/linux/page_counter.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/include/linux/page_counter.h b/include/linux/page_counter.h index 46406f3fe34d..d649b6bbbc87 100644 --- a/include/linux/page_counter.h +++ b/include/linux/page_counter.h @@ -9,10 +9,12 @@ struct page_counter { /* - * Make sure 'usage' does not share cacheline with any other field. The - * memcg->memory.usage is a hot member of struct mem_cgroup. + * Make sure 'usage' does not share cacheline with any other field in + * v2. The memcg->memory.usage is a hot member of struct mem_cgroup. */ atomic_long_t usage; + unsigned long failcnt; /* v1-only field */ + CACHELINE_PADDING(_pad1_); /* effective memory.min and memory.min usage tracking */ @@ -28,12 +30,12 @@ struct page_counter { unsigned long watermark; /* Latest cg2 reset watermark */ unsigned long local_watermark; - unsigned long failcnt; /* Keep all the read most fields in a separete cacheline. */ CACHELINE_PADDING(_pad2_); bool protection_support; + bool track_failcnt; unsigned long min; unsigned long low; unsigned long high; @@ -58,6 +60,7 @@ static inline void page_counter_init(struct page_counter *counter, counter->max = PAGE_COUNTER_MAX; counter->parent = parent; counter->protection_support = protection_support; + counter->track_failcnt = false; } static inline unsigned long page_counter_read(struct page_counter *counter) |