From: Avi Kivity <avi@qumranet.com>
Date: Tue, 26 Aug 2008 14:31:31 +0000 (+0300)
Subject: KVM: Don't call get_user_pages(.force = 1)
X-Git-Tag: v2.6.28-rc1~269^2~64
X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=d657c7335b97d746aa6123c56504b46c20e37df3;p=linux-2.6-omap-h63xx.git

KVM: Don't call get_user_pages(.force = 1)

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>
---

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 0309571fcb2..de3b029f6ad 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -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)) {