get_vm_area() only accepts VM_* flags, not GFP_*.
And according to the doc of get_vm_area(), here should be
VM_ALLOC.
Signed-off-by: WANG Cong <amwang@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
        chunk->map[chunk->map_used++] = pcpu_unit_size;
        chunk->page = chunk->page_ar;
 
-       chunk->vm = get_vm_area(pcpu_chunk_size, GFP_KERNEL);
+       chunk->vm = get_vm_area(pcpu_chunk_size, VM_ALLOC);
        if (!chunk->vm) {
                free_pcpu_chunk(chunk);
                return NULL;