[master] d97817be3 doc 32bit workspace_backend bump

[Nils Goroll]

commit d97817be3992eadb4fc8ecd148c195502362782a
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Mon Mar 11 16:36:55 2019 +0100

    doc 32bit workspace_backend bump
    
    Ref 8be771d17aea9a82f453cabdfeac2ac0fc68a57c
    Ref #2932

diff --git a/doc/sphinx/whats-new/changes-trunk.rst b/doc/sphinx/whats-new/changes-trunk.rst
index d21dec31a..e027faea1 100644
--- a/doc/sphinx/whats-new/changes-trunk.rst
+++ b/doc/sphinx/whats-new/changes-trunk.rst
@@ -77,6 +77,10 @@ the flag is turned on, C sources and shared object libraries that were
 generated from VCL sources are retained in the Varnish working
 directory (see the notes about ``varnishtest`` below).
 
+For 32bit Platforms, we have increased the default
+:ref:`ref_param_workspace_backend` from 16k to 20k accomodate larger
+response headers have become common.
+
 Other changes in varnishd
 ~~~~~~~~~~~~~~~~~~~~~~~~~