From 8dd768326c4a9261481a70b2f2d8962c6c67c120 Mon Sep 17 00:00:00 2001
From: Sotaro Ikeda <sikeda@mozilla.com>
Date: Fri, 21 Mar 2014 09:57:01 -0700
Subject: [PATCH] Bug 986253 - Limt a number of Fence to 4 per message r=nical

---
 gfx/layers/ipc/CompositableTransactionParent.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gfx/layers/ipc/CompositableTransactionParent.cpp b/gfx/layers/ipc/CompositableTransactionParent.cpp
index 16f25127238..18977695b4d 100644
--- a/gfx/layers/ipc/CompositableTransactionParent.cpp
+++ b/gfx/layers/ipc/CompositableTransactionParent.cpp
@@ -318,6 +318,11 @@ CompositableParentManager::ReturnTextureDataIfNecessary(CompositableHost* aCompo
         aCompositable->GetCompositableBackendSpecificData()->GetPendingReleaseFenceTextureList();
   // Return pending Texture data
   for (size_t i = 0; i < textureList.size(); i++) {
+    // File descriptor number is limited to 4 per IPC message.
+    // See Bug 986253
+    if (mPrevFenceHandles.size() >= 4) {
+      break;
+    }
     TextureHostOGL* hostOGL = textureList[i]->AsHostOGL();
     PTextureParent* actor = textureList[i]->GetIPDLActor();
     if (!hostOGL || !actor) {