Re: [RFC] [PATCH] cache pollution aware __copy_from_user_ll()

Andi Kleen
2005-09-02T02:17:16Z

On Friday 02 September 2005 04:08, Andrew Morton wrote:

> I suppose I'll queue it up in -mm for a while, although I'm a bit dubious
> about the whole idea... We'll gain some and we'll lose some - how do we
> know it's a net gain?

I suspect it'll gain more than it loses. The only case where it might
not gain is immediately someone reading the data from the page cache again
after the write. But I suppose that's far less frequent than writing the data.

-Andi