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-rw-r--r--include/linux/mm.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index d0f289bfef01..0619f9fa7581 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -719,6 +719,9 @@ static inline void vma_mark_detached(struct vm_area_struct *vma, bool detached)
vma->detached = detached;
}
+struct vm_area_struct *lock_vma_under_rcu(struct mm_struct *mm,
+ unsigned long address);
+
#else /* CONFIG_PER_VMA_LOCK */
static inline void vma_init_lock(struct vm_area_struct *vma) {}