cgroup_memory_nosocket, cgroup_memory_nokmem and cgroup_memory_noswap are initialized during the kernel initialization and never change their value afterwards. cgroup_memory_nosocket, cgroup_memory_nokmem are written only from cgroup_memory(), which is marked as __init. cgroup_memory_noswap is written from setup_swap_account() and mem_cgroup_swap_init(), both are marked as __init. Mark all three variables as __ro_after_init. Signed-off-by: Roman Gushchin <guro@xxxxxx> --- mm/memcontrol.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index e064ac0d850a..e6203ee24a11 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -80,14 +80,14 @@ struct mem_cgroup *root_mem_cgroup __read_mostly; DEFINE_PER_CPU(struct mem_cgroup *, int_active_memcg); /* Socket memory accounting disabled? */ -static bool cgroup_memory_nosocket; +static bool cgroup_memory_nosocket __ro_after_init; /* Kernel memory accounting disabled? */ -static bool cgroup_memory_nokmem; +static bool cgroup_memory_nokmem __ro_after_init; /* Whether the swap controller is active */ #ifdef CONFIG_MEMCG_SWAP -bool cgroup_memory_noswap __read_mostly; +bool cgroup_memory_noswap __ro_after_init; #else #define cgroup_memory_noswap 1 #endif -- 2.31.1
