Messages in this thread | | | Date | Mon, 28 Apr 2014 17:27:10 +0200 | From | Paolo Bonzini <> | Subject | Re: [PATCH 3/2] KVM: async_pf: change async_pf_execute() to use get_user_pages(tsk => NULL) |
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Il 28/04/2014 17:03, Oleg Nesterov ha scritto: > 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> > --- > virt/kvm/async_pf.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c > index 0ced4f3..62f4223 100644 > --- a/virt/kvm/async_pf.c > +++ b/virt/kvm/async_pf.c > @@ -81,7 +81,7 @@ static void async_pf_execute(struct work_struct *work) > might_sleep(); > > down_read(&mm->mmap_sem); > - get_user_pages(current, mm, addr, 1, 1, 0, NULL, NULL); > + get_user_pages(NULL, mm, addr, 1, 1, 0, NULL, NULL); > up_read(&mm->mmap_sem); > kvm_async_page_present_sync(vcpu, apf); > >
Thanks, added a Suggested-by for Andrea and applied together with 1/2 to kvm/queue.
(Actually, I'm back from a longish vacation and I have a pretty large queue, so I haven't even compile tested these for now. Once I get round to at least smoke-test them, I'll really push to kvm/queue).
Paolo
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