LU-6791 build: Update ZFS/SPL version to 0.6.4.2

Updates ZFS and SPL to latest maintence version.  Includes the
following:

Bug Fixes:
* Fix panic due to corrupt nvlist when running utilities
(zfsonlinux/zfs#3335)
* Fix hard lockup due to infinite loop in zfs_zget()
(zfsonlinux/zfs#3349)
* Fix panic on unmount due to iput taskq (zfsonlinux/zfs#3281)
* Improve metadata shrinker performance on pre-3.1 kernels
(zfsonlinux/zfs#3501)
* Linux 4.1 compat: use read_iter() / write_iter()
* Linux 3.12 compat: NUMA-aware per-superblock shrinker
* Fix spurious hung task watchdog stack traces (zfsonlinux/zfs#3402)
* Fix module loading in zfs import systemd service
(zfsonlinux/zfs#3440)
* Fix intermittent libzfs_init() failure to open /dev/zfs
(zfsonlinux/zfs#2556)

Signed-off-by: Nathaniel Clark <nathaniel.l.clark@intel.com>
Change-Id: I053087317ff9e5bedc1671bb46062e96bfe6f074
Reviewed-on: http://review.whamcloud.com/15481
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Tested-by: Jenkins
Reviewed-by: Isaac Huang <he.huang@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>

diff --git a/contrib/lbuild/lbuild b/contrib/lbuild/lbuild
index 7de6716..37826fc 100755 (executable)
--- a/contrib/lbuild/lbuild
+++ b/contrib/lbuild/lbuild
@@ -1050,7 +1050,7 @@ build_spl_zfs() {
     # The spl/zfs spec files expect RPM_BUILD_ROOT to point to the root of the
     # destination for the rpms
     export RPM_BUILD_ROOT=$TOPDIR
-    SPLZFSVER=${SPLZFSVER:-0.6.4.1}
+    SPLZFSVER=${SPLZFSVER:-0.6.4.2}
     SPLZFSTAG=${SPLZFSTAG:-}
 
     # The files expect a kver to be set to the kernel version .