Christoph Hellwig <[email protected]> wrote:
>
> On Tue, Mar 07, 2006 at 03:13:44PM -0600, Dean Roe wrote:
> > grab_swap_token() assumes that the current process has an mm struct,
> > which is not true for kernel threads invoking get_user_pages(). Since
> > this should be extremely rare, just return from grab_swap_token()
> > without doing anything.
>
> There's a few things that will break if a kernel thread calls
> get_user_pages, so we should rather fix those.
What things will break? Anything which dinks with current->mm in or
under get_user_pages() is probably already broken.
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