Merge pull request #2633 from brauner/2018-09-21/cgfsng_ops_attribute

cgfsng: mark ops with __cgfsng_ops__ attribute

diff --cc src/lxc/cgroups/cgfsng.c
index 40517c22d02de7154f0cc3c28742adf9aaf6ea79,761dc2b1133747d80e906d6ee0a0e1ffa3c565e5..bd72b38b2a5e7e52d65d594719d98b6958b7c803
--- 1/src/lxc/cgroups/cgfsng.c
--- 2/src/lxc/cgroups/cgfsng.c
+++ b/src/lxc/cgroups/cgfsng.c
@@@ -2546,10 -2554,10 +2554,10 @@@ static bool cg_init(struct cgroup_ops *
        if (ret == CGROUP2_SUPER_MAGIC)
                return true;
  
 -      return cg_hybrid_init(ops, keep);
 +      return cg_hybrid_init(ops, relative);
  }
  
- static bool cgfsng_data_init(struct cgroup_ops *ops)
+ __cgfsng_ops__ static bool cgfsng_data_init(struct cgroup_ops *ops)
  {
        const char *cgroup_pattern;