>
> +struct vm_area_struct *find_vma_srcu(struct mm_struct *mm, unsigned long addr)
> +{
> + struct vm_area_struct *vma;
> + unsigned int seq;
> +
> + WARN_ON_ONCE(!srcu_read_lock_held(&vma_srcu));
> +
> + do {
> + seq = read_seqbegin(&mm->mm_seq);
> + vma = __find_vma(mm, addr);
will the __find_vma() loops for ever due to the rotations in the RBtree?
> + } while (read_seqretry(&mm->mm_seq, seq));
> +
> + return vma;
> +}
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