From b814feabd7292f7024f559f5b2c50084b6eec733 Mon Sep 17 00:00:00 2001
From: Ingo Weinhold <ingo_weinhold@gmx.de>
Date: Mon, 20 May 2013 22:54:59 +0200
Subject: [PATCH] packagefs: PackageFile::DataAccessor: Avoid unnecessary
 locking

... in case of version 2 package files.
---
 .../kernel/file_systems/packagefs/package/PackageFile.cpp      | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/add-ons/kernel/file_systems/packagefs/package/PackageFile.cpp b/src/add-ons/kernel/file_systems/packagefs/package/PackageFile.cpp
index 08106735b7..2fa558cced 100644
--- a/src/add-ons/kernel/file_systems/packagefs/package/PackageFile.cpp
+++ b/src/add-ons/kernel/file_systems/packagefs/package/PackageFile.cpp
@@ -105,7 +105,8 @@ struct PackageFile::DataAccessor {
 
 		if (toRead > 0) {
 			IORequestOutput output(request);
-			MutexLocker locker(fLock);
+			MutexLocker locker(fLock, false, fData->Version() == 1);
+				// V2 readers are reentrant
 			status_t error = fReader->ReadDataToOutput(offset, toRead, &output);
 			if (error != B_OK)
 				RETURN_ERROR(error);