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diff -rupN vmnet-only.bak/userif.c vmnet-only/userif.c
--- vmnet-only.bak/userif.c	2017-04-05 10:44:29.166143701 -0400
+++ vmnet-only/userif.c	2017-04-05 10:45:46.443146453 -0400
@@ -113,12 +113,16 @@ UserifLockPage(VA addr) // IN
    int retval;
 
    down_read(&current->mm->mmap_sem);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0)
+   retval = get_user_pages(addr, 1, FOLL_WRITE, &page, NULL);
+#else
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 99)
    retval = get_user_pages(addr,
 #else
    retval = get_user_pages(current, current->mm, addr,
 #endif
 			   1, 1, 0, &page, NULL);
+#endif
    up_read(&current->mm->mmap_sem);
 
    if (retval != 1) {