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Subject[PATCH 2/6] memcg: cleanup useless LRU_ALL_EVICTABLE
Date
From: Wanpeng Li <liwp@linux.vnet.ibm.com>

Since LRU_ALL_EVICTABLE is useless, just remove it.
Add LRU_ALL_UNEVICTABLE to mask unevictable pages.

Signed-off-by: Wanpeng Li <liwp.linux@gmail.com>
---
include/linux/mmzone.h | 2 +-
mm/memcontrol.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 68c569f..5873620 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -209,7 +209,7 @@ struct lruvec {
/* Mask used at gathering information at once (see memcontrol.c) */
#define LRU_ALL_FILE (BIT(LRU_INACTIVE_FILE) | BIT(LRU_ACTIVE_FILE))
#define LRU_ALL_ANON (BIT(LRU_INACTIVE_ANON) | BIT(LRU_ACTIVE_ANON))
-#define LRU_ALL_EVICTABLE (LRU_ALL_FILE | LRU_ALL_ANON)
+#define LRU_ALL_UNEVICTABLE (BIT(LRU_UNEVICTABLE))
#define LRU_ALL ((1 << NR_LRU_LISTS) - 1)

/* Isolate clean file */
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 724bd02..ccda728 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4033,11 +4033,11 @@ static int mem_control_numa_stat_show(struct cgroup *cont, struct cftype *cft,
}
seq_putc(m, '\n');

- unevictable_nr = mem_cgroup_nr_lru_pages(memcg, BIT(LRU_UNEVICTABLE));
+ unevictable_nr = mem_cgroup_nr_lru_pages(memcg, LRU_ALL_UNEVICTABLE);
seq_printf(m, "unevictable=%lu", unevictable_nr);
for_each_node_state(nid, N_HIGH_MEMORY) {
node_nr = mem_cgroup_node_nr_lru_pages(memcg, nid,
- BIT(LRU_UNEVICTABLE));
+ LRU_ALL_UNEVICTABLE);
seq_printf(m, " N%d=%lu", nid, node_nr);
}
seq_putc(m, '\n');
--
1.7.9.5


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