Updated main branch

kernel/kernel_compat.h

@@ -0,0 +1,24 @@
+#ifndef __KSU_H_KERNEL_COMPAT
+#define __KSU_H_KERNEL_COMPAT
+
+#include <linux/fs.h>
+#include <linux/version.h>
+
+/*
+ * ksu_copy_from_user_retry
+ * try nofault copy first, if it fails, try with plain
+ * paramters are the same as copy_from_user
+ * 0 = success
+ */
+static long ksu_copy_from_user_retry(void *to, 
+        const void __user *from, unsigned long count)
+{
+    long ret = copy_from_user_nofault(to, from, count);
+    if (likely(!ret))
+        return ret;
+
+    // we faulted! fallback to slow path
+    return copy_from_user(to, from, count);
+}
+
+#endif