vma_assert_locked() is needed to replace mmap_assert_locked() once we
start using per-vma locks in userfaultfd operations.
In !CONFIG_PER_VMA_LOCK case when mm is locked, it implies that the
given VMA is locked.
Signed-off-by: Lokesh Gidra <lokeshgidra@xxxxxxxxxx>
---
include/linux/mm.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 3c85634b186c..5ece3ad34ef8 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -781,6 +781,11 @@ static inline struct vm_area_struct *lock_vma_under_rcu(struct mm_struct *mm,
return NULL;
}
+static inline void vma_assert_locked(struct vm_area_struct *vma)
+{
+ mmap_assert_locked(vma->vm_mm);
+}
+
static inline void release_fault_lock(struct vm_fault *vmf)
{
mmap_read_unlock(vmf->vma->vm_mm);
--
2.43.0.687.g38aa6559b0-goog
