Re: [PATCH] ppc64: Fix possible race with set_pte on a present PTE

On Wed, 2004-05-26 at 14:12, Benjamin Herrenschmidt wrote:

On Wed, 2004-05-26 at 14:08, Linus Torvalds wrote:

quoted

You're right. We do use it on the do_wp_page() path, and there we actually 
use a whole new page in the "break_cow()" case. That case is in fact 
fundamentally different from the other ones.

So we should probably break up the "ptep_establish()" into its two pieces,
since the callers don't actually want to do the same thing. One really
wants to do a "clear old one, set a totally new one", and the two other
places want to actually update just the dirty and accessed bits.

Hrm... Still dies, some kind of loop it seems, I'll have a look

Ben.


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