> >> Log Message:
> >> Introduce uvm_is_swap_device(), to check if the passed struct vnode * is
> >> used as a swap device or not.
> >>
> >> Okay mrg@.
> 
> > for what purpose can this racy test make sense?
> 
> you mean racy because I forgot another lock that should be held when
> calling swaplist_find() or a different reason?

i meant, nothing except kernel_lock prevents the state changed before
you examine the return value of the function.
of course, whether it can actually be a problem or not depends
on its usage.  hence my question above.

YAMAMOTO Takashi