KVM: Don't call get_user_pages(.force = 1)
authorAvi Kivity <avi@qumranet.com>
Tue, 26 Aug 2008 14:31:31 +0000 (17:31 +0300)
committerAvi Kivity <avi@qumranet.com>
Wed, 15 Oct 2008 08:15:23 +0000 (10:15 +0200)
This is esoteric and only needed to break COW on MAP_SHARED mappings.  Since
KVM no longer does these sorts of mappings, breaking COW on them is no longer
necessary.

Signed-off-by: Avi Kivity <avi@qumranet.com>
virt/kvm/kvm_main.c

index 0309571fcb20c07636760a65f5b701c7dc2dff28..de3b029f6adf45e1c8d750e78d645963c8ac3911 100644 (file)
@@ -734,7 +734,7 @@ pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn)
                return page_to_pfn(bad_page);
        }
 
-       npages = get_user_pages(current, current->mm, addr, 1, 1, 1, page,
+       npages = get_user_pages(current, current->mm, addr, 1, 1, 0, page,
                                NULL);
 
        if (unlikely(npages != 1)) {