Re: open(2) says O_DIRECT works on 512 byte boundries?

[Greg KH]

On Mon, Feb 02, 2009 at 11:08:56PM +0100, Andrea Arcangeli wrote:
> Hi Greg!
> 
> > Thanks for the pointers, I'll go read the thread and follow up there.
> 
> If you also run into this final fix is attached below. Porting to
> mainline is a bit hard because of gup-fast... Perhaps we can use mmu
> notifiers to fix gup-fast... need to think more about it then I'll
> post something.
> 
> Please help testing the below on pre-gup-fast kernels, thanks!

Thanks a lot for the patch, I'll try this out tomorrow.

greg k-h
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