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Subject[PATCH 5/6] mm: memcontrol: push down mem_cgroup_nr_lru_pages()
Date
mem_cgroup_nr_lru_pages() is just a convenience wrapper around
memcg_page_state() that takes bitmasks of lru indexes and aggregates
the counts for those.

Replace callsites where the bitmask is simple enough with direct
memcg_page_state() call(s).

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
---
mm/memcontrol.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 73eb8333bc73..6d0c3374669f 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1354,7 +1354,7 @@ void mem_cgroup_print_oom_meminfo(struct mem_cgroup *memcg)

for (i = 0; i < NR_LRU_LISTS; i++)
pr_cont(" %s:%luKB", mem_cgroup_lru_names[i],
- K(mem_cgroup_nr_lru_pages(iter, BIT(i))));
+ K(memcg_page_state(iter, NR_LRU_BASE + i)));

pr_cont("\n");
}
@@ -2987,8 +2987,8 @@ static void accumulate_memcg_tree(struct mem_cgroup *memcg,
acc->events_array ? acc->events_array[i] : i);

for (i = 0; i < NR_LRU_LISTS; i++)
- acc->lru_pages[i] +=
- mem_cgroup_nr_lru_pages(mi, BIT(i));
+ acc->lru_pages[i] += memcg_page_state(mi,
+ NR_LRU_BASE + i);
}
}

@@ -3418,7 +3418,8 @@ static int memcg_stat_show(struct seq_file *m, void *v)

for (i = 0; i < NR_LRU_LISTS; i++)
seq_printf(m, "%s %lu\n", mem_cgroup_lru_names[i],
- mem_cgroup_nr_lru_pages(memcg, BIT(i)) * PAGE_SIZE);
+ memcg_page_state(memcg, NR_LRU_BASE + i) *
+ PAGE_SIZE);

/* Hierarchical information */
memory = memsw = PAGE_COUNTER_MAX;
@@ -3909,8 +3910,8 @@ void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages,

/* this should eventually include NR_UNSTABLE_NFS */
*pwriteback = memcg_page_state(memcg, NR_WRITEBACK);
- *pfilepages = mem_cgroup_nr_lru_pages(memcg, (1 << LRU_INACTIVE_FILE) |
- (1 << LRU_ACTIVE_FILE));
+ *pfilepages = memcg_page_state(memcg, NR_INACTIVE_FILE) +
+ memcg_page_state(memcg, NR_ACTIVE_FILE);
*pheadroom = PAGE_COUNTER_MAX;

while ((parent = parent_mem_cgroup(memcg))) {
--
2.20.1
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