KVM: Fix __set_bit() race in mark_page_dirty() during dirty logging

[linux-flexiantxendom0-3.2.10.git] / virt / kvm / kvm_main.c

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 7287bf5..a91f980 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1543,7 +1543,7 @@ void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot,
        if (memslot && memslot->dirty_bitmap) {
                unsigned long rel_gfn = gfn - memslot->base_gfn;
 
-               if (!__test_and_set_bit_le(rel_gfn, memslot->dirty_bitmap))
+               if (!test_and_set_bit_le(rel_gfn, memslot->dirty_bitmap))
                        memslot->nr_dirty_pages++;
        }
 }