static inline void __vma_unlink_prev(struct mm_struct *mm,
				     struct vm_area_struct *vma,
				     struct vm_area_struct *prev)
{
	__vma_unlink_common(mm, vma, prev, true, vma);
}

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.