Minor change the API, now it just gets passed flags instead of a pointer to the nameidata
--- a/vmblock-only/linux/dentry.c	2015-02-07 03:11:55.000000000 +0300
+++ c/vmblock-only/linux/dentry.c	2015-02-24 03:58:06.038605919 +0300
@@ -32,7 +32,11 @@
 #include "block.h"
 
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0)
 static int DentryOpRevalidate(struct dentry *dentry, struct nameidata *nd);
+#else
+static int DentryOpRevalidate(struct dentry *dentry, unsigned int);
+#endif
 
 struct dentry_operations LinkDentryOps = {
    .d_revalidate = DentryOpRevalidate,
@@ -58,9 +62,12 @@
  *----------------------------------------------------------------------------
  */
 
-static int
-DentryOpRevalidate(struct dentry *dentry,  // IN: dentry revalidating
-                   struct nameidata *nd)   // IN: lookup flags & intent
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0)
+static int DentryOpRevalidate(struct dentry *dentry, struct nameidata *nd)
+#else
+static int DentryOpRevalidate(struct dentry *dentry, unsigned int flags)
+#endif
+
 {
    VMBlockInodeInfo *iinfo;
    struct nameidata actualNd;
@@ -101,7 +108,11 @@
    if (actualDentry &&
        actualDentry->d_op &&
        actualDentry->d_op->d_revalidate) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 10, 0)
+      return actualDentry->d_op->d_revalidate(actualDentry, flags);
+#else
       return actualDentry->d_op->d_revalidate(actualDentry, nd);
+#endif
    }
 
    if (compat_path_lookup(iinfo->name, 0, &actualNd)) {