CHANGELOG.md: document v18.01.1 release

While here, bump version.h for the v18.01.1 release

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Ie09fcf5b86a816564ac8728b8b216cf2c3cce539
Reviewed-on: https://review.gerrithub.io/408727
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>

CHANGELOG.md

@@ -1,5 +1,26 @@
 # Changelog
 
+## v18.01.1: vhost CVE fixes, NVMe getpid() caching
+
+This release contains the following fixes.  All users of SPDK v18.01 are strongly
+recommended to upgrade.
+
+### Fixes for DPDK CVE-2018-1059
+
+The SPDK vhost-scsi and vhost-blk applications now have fixes to address the DPDK rte_vhost
+vulnerability [CVE-2018-1059](http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1059).
+Please see this [security advisory](https://access.redhat.com/security/cve/cve-2018-1059)
+for additional information on this DPDK vulnerability.
+
+### NVMe driver getpid() caching
+
+The SPDK NVMe driver now caches the pid in a global variable rather than calling getpid() on
+every request.  The SPDK NVMe driver associates each request with the pid of its submitting
+process to enable multi-process support.  glibc 2.25 eliminated pid caching resulting in system
+calls when getpid() is called which degraded SPDK NVMe driver efficiency.  glibc eliminated pid
+caching for use cases (such as forking) that are not support by SPDK, so pid caching is
+an acceptable solution to eliminate this degradation.
+
 ## v18.01: Blobstore Thin Provisioning
 
 ### Build System

include/spdk/version.h

@@ -59,7 +59,7 @@
 /**
  * Version string suffix.
  */
-#define SPDK_VERSION_SUFFIX	"-pre"
+#define SPDK_VERSION_SUFFIX	""
 
 /**
  * Single numeric value representing a version number for compile-time comparisons.