osd: Re-introduce the "optimized" IO path.

Signed-off-by: Alex Ainscow <[email protected]>

Author: aainscow

src/osd/CMakeLists.txt

@@ -46,6 +46,10 @@ set(osd_srcs
   ECExtentCacheL.cc
   ECTransactionL.cc
   ECUtilL.cc
+  ECCommon.cc
+  ECBackend.cc
+  ExtentCache.cc
+  ECTransaction.cc
   ECUtil.cc
   ECInject.cc
   ECInject.h