Re: [PATCH] x86: cache pollution aware __copy_from_user_ll()

From: Linus Torvalds
Date: Mon Jun 26 2006 - 16:30:17 EST




On Mon, 26 Jun 2006, Andi Kleen wrote:
>
> Problem is that it will likely wreck pipe and AF_UNIX (= X server)
> performance. These read the buffer quickly again.

Look at the patch, dammit!

> If you do something like this it would be better to define
> a special function and use it for real FS traffic only.

Has anybody taken even a five-second look at the patch itself, or are you
all just complaining without knowing what you're complaining about?

Linus
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