* Inode::_GrowStream() did not make the double indirect block writable before

adding a block to its array. This could cause all kinds of trouble, and
  fixes at least a part of #2148.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25125 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/file_systems/bfs/Inode.cpp

@@ -1754,6 +1754,8 @@ Inode::_GrowStream(Transaction &transaction, off_t size)
 				do {
 					// do we need a new array block?
 					if (array[indirectIndex % runsPerBlock].IsZero()) {
+						cached.MakeWritable(transaction);
+
 						status = _AllocateBlockArray(transaction,
 							array[indirectIndex % runsPerBlock]);
 						if (status < B_OK)