this needs to be folded into mm/filemap: add AS_KERNEL_FILE for it to build with CONFIG_MEMCG unset. Apologies for the churn. Signed-off-by: Boris Burkov --- include/linux/memcontrol.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 9fa3afc90dd5..e693978b2022 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -1059,6 +1059,8 @@ extern int mem_cgroup_init(void); #define MEM_CGROUP_ID_SHIFT 0 +#define root_mem_cgroup (NULL) + static inline struct mem_cgroup *folio_memcg(struct folio *folio) { return NULL; -- 2.50.1