Re: [PATCH] iommu/amd: Take mmap_sem when calling get_user_pages

[Suravee Suthikulanit]

On 5/6/2014 1:14 PM, Joerg Roedel wrote:
> On Mon, Apr 28, 2014 at 05:27:46PM -0500, Suthikulpanit, Suravee wrote:
> > From: Jay Cornwall <jay.cornwall@xxxxxxx>
> >
> > get_user_pages requires caller to hold a read lock on mmap_sem.
>
> Right, but can't we just switch to get_user_pages_fast instead?
>
>
> 	Joerg

You're right. I think it can. Let me spin out another patch.

Suravee

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