register_shrinker() might return -ENOMEM error since Linux 3.12.
Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Cc: Izik Eidus <izik.eidus@xxxxxxxxxxxxxxxxxx>
Cc: Avi Kivity <avi@xxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
---
arch/x86/kvm/mmu.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index e5e66e5..432da2e 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -5482,7 +5482,10 @@ int kvm_mmu_module_init(void)
if (percpu_counter_init(&kvm_total_used_mmu_pages, 0, GFP_KERNEL))
goto nomem;
- register_shrinker(&mmu_shrinker);
+ if (register_shrinker(&mmu_shrinker)) {
+ percpu_counter_destroy(&kvm_total_used_mmu_pages);
+ goto nomem;
+ }
return 0;
--
1.8.3.1
