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-rw-r--r--arch/um/include/asm/mmu_context.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/um/include/asm/mmu_context.h b/arch/um/include/asm/mmu_context.h
index 62262c5c7785..17ddd4edf875 100644
--- a/arch/um/include/asm/mmu_context.h
+++ b/arch/um/include/asm/mmu_context.h
@@ -8,6 +8,7 @@
#include <linux/sched.h>
#include <linux/mm_types.h>
+#include <linux/mmap_lock.h>
#include <asm/mmu.h>
@@ -47,7 +48,7 @@ static inline void activate_mm(struct mm_struct *old, struct mm_struct *new)
* when the new ->mm is used for the first time.
*/
__switch_mm(&new->context.id);
- down_write_nested(&new->mmap_sem, 1);
+ mmap_write_lock_nested(new, SINGLE_DEPTH_NESTING);
uml_setup_stubs(new);
mmap_write_unlock(new);
}