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| author | Johannes Weiner | 2016-01-15 00:20:56 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2016-01-15 01:00:49 +0100 |
| commit | 7d828602e5ef3297a69392a2d31264e4ab9c8bb7 (patch) | |
| tree | 4d6d6d82b2c68321175e4e769dadb146c72ef882 | |
| parent | mm/ksm.c: use list_for_each_entry_safe (diff) | |
| download | kernel-qcow2-linux-7d828602e5ef3297a69392a2d31264e4ab9c8bb7.tar.gz kernel-qcow2-linux-7d828602e5ef3297a69392a2d31264e4ab9c8bb7.tar.xz kernel-qcow2-linux-7d828602e5ef3297a69392a2d31264e4ab9c8bb7.zip | |
mm: memcontrol: export root_mem_cgroup
A later patch will need this symbol in files other than memcontrol.c, so
export it now and replace mem_cgroup_root_css at the same time.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: David S. Miller <davem@davemloft.net>
Reviewed-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/memcontrol.h | 3 | ||||
| -rw-r--r-- | mm/backing-dev.c | 2 | ||||
| -rw-r--r-- | mm/memcontrol.c | 5 |
3 files changed, 5 insertions, 5 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 78a1ec2e23fc..d0c724f53691 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -265,7 +265,8 @@ struct mem_cgroup { struct mem_cgroup_per_node *nodeinfo[0]; /* WARNING: nodeinfo must be the last member here */ }; -extern struct cgroup_subsys_state *mem_cgroup_root_css; + +extern struct mem_cgroup *root_mem_cgroup; /** * mem_cgroup_events - count memory events against a cgroup diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 7340353f8aea..cc5d29d2da9b 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -672,7 +672,7 @@ static int cgwb_bdi_init(struct backing_dev_info *bdi) ret = wb_init(&bdi->wb, bdi, 1, GFP_KERNEL); if (!ret) { - bdi->wb.memcg_css = mem_cgroup_root_css; + bdi->wb.memcg_css = &root_mem_cgroup->css; bdi->wb.blkcg_css = blkcg_root_css; } return ret; diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 0bc140d998ad..44ed2dee8f0c 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -76,9 +76,9 @@ struct cgroup_subsys memory_cgrp_subsys __read_mostly; EXPORT_SYMBOL(memory_cgrp_subsys); +struct mem_cgroup *root_mem_cgroup __read_mostly; + #define MEM_CGROUP_RECLAIM_RETRIES 5 -static struct mem_cgroup *root_mem_cgroup __read_mostly; -struct cgroup_subsys_state *mem_cgroup_root_css __read_mostly; /* Whether the swap controller is active */ #ifdef CONFIG_MEMCG_SWAP @@ -4241,7 +4241,6 @@ mem_cgroup_css_alloc(struct cgroup_subsys_state *parent_css) /* root ? */ if (parent_css == NULL) { root_mem_cgroup = memcg; - mem_cgroup_root_css = &memcg->css; page_counter_init(&memcg->memory, NULL); memcg->high = PAGE_COUNTER_MAX; memcg->soft_limit = PAGE_COUNTER_MAX; |