Revert "LU-5568 lnet: fix kernel crash when network failed to start"

Isaac has found many issues with the patch and advise to revert it.

This reverts commit 8fab48a8ef0bad6961c2ca1e2959726252ba43ac.

Change-Id: I9d8422e018d9dc809eed53dcfe376cb5154181af
Reviewed-on: http://review.whamcloud.com/12502
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Tested-by: Oleg Drokin <oleg.drokin@intel.com>
LU-5584 llite: ensure all data flush out when umount

Write out all extents when clear inode. Otherwise we
may lose data while umount.

Change-Id: I199217c96a7ba49c2f3577a65750e7956a9af63a
Signed-off-by: Yang Sheng <yang.sheng@intel.com>
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/12103
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>