Re: [PATCH][RFC][0/4] InfiniBand userspace verbs implementation

Arjan van de Ven
2005-04-18T19:40:54Z

On Mon, 2005-04-18 at 11:25 -0500, Timur Tabi wrote:
> Arjan van de Ven wrote:
>
> > this is a myth; linux is free to move the page about in physical memory
> > even if it's mlock()ed!!
>
> Then Linux has a very odd definition of the word "locked".
>
> > And even then, the user can munlock the memory from another thread etc
> > etc. Not a good idea.
>
> Well, that's okay, because then the app is doing something stupid, so we don't worry about
> that.

you should since that physical page can be reused, say by a root
process, and you'd be majorly screwed