diff -r 00a8773f7268 -r 97dc170a3064 src/mem/ruby/slicc_interface/Message.hh
--- a/src/mem/ruby/slicc_interface/Message.hh	Mon Jul 20 16:10:38 2015 -0500
+++ b/src/mem/ruby/slicc_interface/Message.hh	Mon Jul 20 16:10:41 2015 -0500
@@ -103,6 +103,8 @@
     int getVnet() const { return vnet; }
     void setVnet(int net) { vnet = net; }
 
+    virtual bool bypassBlocked() const { return false; }
+
   private:
     const Tick m_time;
     Tick m_LastEnqueueTime; // my last enqueue time
diff -r 00a8773f7268 -r 97dc170a3064 src/mem/ruby/slicc_interface/RubyRequest.hh
--- a/src/mem/ruby/slicc_interface/RubyRequest.hh	Mon Jul 20 16:10:38 2015 -0500
+++ b/src/mem/ruby/slicc_interface/RubyRequest.hh	Mon Jul 20 16:10:41 2015 -0500
@@ -85,6 +85,8 @@
     void print(std::ostream& out) const;
     bool functionalRead(Packet *pkt);
     bool functionalWrite(Packet *pkt);
+
+    bool bypassBlocked() const { return (m_Type == RubyRequestType_Locked_RMW_Write); }
 };
 
 inline std::ostream&
diff -r 00a8773f7268 -r 97dc170a3064 src/mem/slicc/ast/PeekStatementAST.py
--- a/src/mem/slicc/ast/PeekStatementAST.py	Mon Jul 20 16:10:38 2015 -0500
+++ b/src/mem/slicc/ast/PeekStatementAST.py	Mon Jul 20 16:10:41 2015 -0500
@@ -70,7 +70,8 @@
             code('''
     if (m_is_blocking &&
         (m_block_map.count(in_msg_ptr->m_$address_field) == 1) &&
-        (m_block_map[in_msg_ptr->m_$address_field] != &$qcode)) {
+        ((m_block_map[in_msg_ptr->m_$address_field] != &$qcode) ||
+        (in_msg_ptr->bypassBlocked() ))) {
             $qcode.delayHead();
             continue;
     }