Fix VSwap configurations

(1) Set barrier of oomguarpages and vmguarpages to 0
    (i.e. no guarantees by default)

(2) Set KMEMSIZE limit to half of PHYSPAGES
    (with 10% gap between the barrier and the limit)

(3) Set LOCKEDPAGES to half of PHYSPAGES

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
3 files changed