Mongodb startup warnings after update or install

if u get this error

MongoDB shell version: 3.0.1
connecting to: test  
Server has startup warnings: 
2015-04-03T13:37:53.536+0530 I CONTROL  [initandlisten] 
2015-04-03T13:37:53.536+0530 I CONTROL  [initandlisten] ** WARNING:        /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2015-04-03T13:37:53.536+0530 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2015-04-03T13:37:53.536+0530 I CONTROL  [initandlisten] 
2015-04-03T13:37:53.537+0530 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2015-04-03T13:37:53.537+0530 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2015-04-03T13:37:53.537+0530 I CONTROL  [initandlisten] 

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 solve

sudo gedit /etc/rc.local
add these lines after exit 0

if test -f /sys/kernel/mm/transparent_hugepage/khugepaged/defrag; then
echo 0 > /sys/kernel/mm/transparent_hugepage/khugepaged/defrag
fi
if test -f /sys/kernel/mm/transparent_hugepage/defrag; then
echo never > /sys/kernel/mm/transparent_hugepage/defrag
fi
if test -f /sys/kernel/mm/transparent_hugepage/enabled; then
echo never > /sys/kernel/mm/transparent_hugepage/enabled
fi

restart pc
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enjoy..............................................................................................................