Changelog:
 * https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.18

Backport of r46299, r46303 and r46308.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>


git-svn-id: svn://svn.openwrt.org/openwrt/branches/chaos_calmer@46309 3c298f89-4303-0410-b956-a3cf2f4a3e73