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    SubjectRe: [RFC][PATCH] Cross Memory Attach
    On Thu, Sep 16, 2010 at 9:27 AM, Peter Zijlstra <peterz@infradead.org> wrote:
    > On Wed, 2010-09-15 at 08:11 -0700, Linus Torvalds wrote:
    >
    >>    if (copy_to)
    >>       ret = copy_from_user(..);
    >>    else
    >>       ret = copy_to_user(..);
    >>    kunmap(process_pages[i]);
    >>    if (ret)
    >>       goto out;
    >
    > Shouldn't we be using kmap_atomic()

    Over a copy_to/from_user? Not bloody likely.

    Linus
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