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-rw-r--r--arch/riscv/kernel/smpboot.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c
index 4a232600cedb..17e748312afd 100644
--- a/arch/riscv/kernel/smpboot.c
+++ b/arch/riscv/kernel/smpboot.c
@@ -30,6 +30,7 @@
#include <linux/irq.h>
#include <linux/of.h>
#include <linux/sched/task_stack.h>
+#include <linux/sched/mm.h>
#include <asm/irq.h>
#include <asm/mmu_context.h>
#include <asm/tlbflush.h>
@@ -101,7 +102,7 @@ asmlinkage void __init smp_callin(void)
struct mm_struct *mm = &init_mm;
/* All kernel threads share the same mm context. */
- atomic_inc(&mm->mm_count);
+ mmgrab(mm);
current->active_mm = mm;
trap_init();