diff -r 5af6c74cd793 -r af6ec97d9189 userlibandfileserver/fileserver/sfile/sf_cache_client.h
--- a/userlibandfileserver/fileserver/sfile/sf_cache_client.h	Wed Jun 23 11:59:44 2010 +0100
+++ b/userlibandfileserver/fileserver/sfile/sf_cache_client.h	Wed Jun 23 12:52:28 2010 +0100
@@ -57,6 +57,7 @@
 	TBool SegmentEmpty(TInt64 aPos);
 	TBool SegmentDirty(TInt64 aPos);
 	TBool TooManyLockedSegments();
+	TBool LockedSegmentsHalfUsed();
 
 	inline TInt CacheOffset(TInt64 aLinAddr) const \
 		{return(I64LOW(aLinAddr)& ((1 << iManager.SegmentSizeLog2())-1));}