1 files changed, 1 insertions, 1 deletions

diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c
index 278c40abce82..633c4cf6fdb0 100644
--- a/arch/sparc/kernel/sun4m_smp.c
+++ b/arch/sparc/kernel/sun4m_smp.c
@@ -59,7 +59,7 @@ void sun4m_cpu_pre_online(void *arg)
                              : "memory" /* paranoid */);
 
         /* Attach to the address space of init_task. */
-        atomic_inc(&init_mm.mm_count);
+        mmgrab(&init_mm);
         current->active_mm = &init_mm;
 
         while (!cpumask_test_cpu(cpuid, &smp_commenced_mask))