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-rw-r--r--mm/memcontrol.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 266a1ab05434..3e8f1ad0fe9d 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3910,6 +3910,10 @@ static int mem_cgroup_move_charge_write(struct cgroup_subsys_state *css,
{
struct mem_cgroup *memcg = mem_cgroup_from_css(css);
+ pr_warn_once("Cgroup memory moving (move_charge_at_immigrate) is deprecated. "
+ "Please report your usecase to linux-mm@kvack.org if you "
+ "depend on this functionality.\n");
+
if (val & ~MOVE_MASK)
return -EINVAL;