[CentOS] page allocation failure

CentOS 6.4

/var/log/messages-20131013:Oct  9 03:16:36 vixen kernel: EMT: page 
allocation failure. order:4, mode:0xd0
/var/log/messages-20131020:Oct 14 13:15:11 vixen kernel: httpd: page 
allocation failure. order:2, mode:0x20
/var/log/messages-20131020:Oct 14 13:15:11 vixen kernel: httpd: page 
allocation failure. order:2, mode:0x20
/var/log/messages-20131027:Oct 20 16:00:47 vixen kernel: sshd: page 
allocation failure. order:2, mode:0x20
/var/log/messages-20131027:Oct 20 16:14:28 vixen kernel: sshd: page 
allocation failure. order:2, mode:0x20
/var/log/messages-20131027:Oct 20 16:14:28 vixen kernel: swapper: page 
allocation failure. order:1, mode:0x20
/var/log/messages-20131027:Oct 20 16:14:28 vixen kernel: sshd: page 
allocation failure. order:2, mode:0x20
/var/log/messages-20131027:Oct 23 10:22:41 vixen kernel: httpd: page 
allocation failure. order:1, mode:0x20

I know It's been discussed about a year ago but I can't view the bug 
reports mentioned in the thread. It seems to require an active RHEL 
subscription. What was that workaround again?

Thanks