VM_STACK_INCOMPLETE_SETUP
vm_flags |= VM_STACK_INCOMPLETE_SETUP;
vm_flags_clear(vma, VM_STACK_INCOMPLETE_SETUP);
if ((vma->vm_flags & VM_STACK_INCOMPLETE_SETUP) ==
VM_STACK_INCOMPLETE_SETUP)
unsigned long flags = VM_STACK_FLAGS | VM_STACK_INCOMPLETE_SETUP;
VM_WARN_ON_ONCE(VM_STACK_FLAGS & VM_STACK_INCOMPLETE_SETUP);