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

From: Andi Kleen
Date: Thu Sep 01 2005 - 21:19:19 EST


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
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