mm: memcontrol: drop unused @css argument in memcg_init_kmem

This series adds accounting of the historical "kmem" memory consumers to
the cgroup2 memory controller.

These consumers include the dentry cache, the inode cache, kernel stack
pages, and a few others that are pointed out in patch 7/8.  The
footprint of these consumers is directly tied to userspace activity in
common workloads, and so they have to be part of the minimally viable
configuration in order to present a complete feature to our users.

The cgroup2 interface of the memory controller is far from complete, but
this series, along with the socket memory accounting series, provides
the final semantic changes for the existing memory knobs in the cgroup2
interface, which is scheduled for initial release in the next merge
window.

This patch (of 8):

Remove unused css argument frmo memcg_init_kmem()

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Tejun Heo <tj@kernel.org>
Acked-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/net/tcp_memcontrol.h b/include/net/tcp_memcontrol.h
index 01ff7c6efada979784bd2ac888e3e24e19a511ed..020c2dee65e8b096a571d394e89ed41b48bd5923 100644 (file)
--- a/include/net/tcp_memcontrol.h
+++ b/include/net/tcp_memcontrol.h
@@ -4,6 +4,7 @@
 struct cgroup_subsys;
 struct mem_cgroup;
 
-int tcp_init_cgroup(struct mem_cgroup *memcg, struct cgroup_subsys *ss);
+int tcp_init_cgroup(struct mem_cgroup *memcg);
 void tcp_destroy_cgroup(struct mem_cgroup *memcg);
+
 #endif /* _TCP_MEMCG_H */

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 0eda67376df4323a62f8268975468a8dd4d91e04..f21f29cd14f9a5d93baebb88ccaf2e58d03c2611 100644 (file)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3583,7 +3583,7 @@ static int mem_cgroup_oom_control_write(struct cgroup_subsys_state *css,
 }
 
 #ifdef CONFIG_MEMCG_KMEM
-static int memcg_init_kmem(struct mem_cgroup *memcg, struct cgroup_subsys *ss)
+static int memcg_init_kmem(struct mem_cgroup *memcg)
 {
        int ret;
 
@@ -3591,7 +3591,7 @@ static int memcg_init_kmem(struct mem_cgroup *memcg, struct cgroup_subsys *ss)
        if (ret)
                return ret;
 
-       return tcp_init_cgroup(memcg, ss);
+       return tcp_init_cgroup(memcg);
 }
 
 static void memcg_deactivate_kmem(struct mem_cgroup *memcg)
@@ -4274,7 +4274,7 @@ mem_cgroup_css_online(struct cgroup_subsys_state *css)
        }
        mutex_unlock(&memcg_create_mutex);
 
-       ret = memcg_init_kmem(memcg, &memory_cgrp_subsys);
+       ret = memcg_init_kmem(memcg);
        if (ret)
                return ret;
 

diff --git a/net/ipv4/tcp_memcontrol.c b/net/ipv4/tcp_memcontrol.c
index 18bc7f745e9cadd8dde7e53ccc1fe2102fc15f8b..133eb5eac49f65eebc204b543058647a10720a33 100644 (file)
--- a/net/ipv4/tcp_memcontrol.c
+++ b/net/ipv4/tcp_memcontrol.c
@@ -6,7 +6,7 @@
 #include <linux/memcontrol.h>
 #include <linux/module.h>
 
-int tcp_init_cgroup(struct mem_cgroup *memcg, struct cgroup_subsys *ss)
+int tcp_init_cgroup(struct mem_cgroup *memcg)
 {
        struct mem_cgroup *parent = parent_mem_cgroup(memcg);
        struct page_counter *counter_parent = NULL;