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KVM: async_pf: change async_pf_execute() to use get_user_pages(tsk => NULL)
async_pf_execute() passes tsk == current to gup(), this is doesn't hurt but unnecessary and misleading. "tsk" is only used to account the number of faults and current is the random workqueue thread. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Suggested-by: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -81,7 +81,7 @@ static void async_pf_execute(struct work_struct *work)
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might_sleep();
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down_read(&mm->mmap_sem);
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get_user_pages(current, mm, addr, 1, 1, 0, NULL, NULL);
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get_user_pages(NULL, mm, addr, 1, 1, 0, NULL, NULL);
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up_read(&mm->mmap_sem);
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kvm_async_page_present_sync(vcpu, apf);
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