It's... Linux kernel 2.6.27 Oct 10, 2008, 15 :17 UTC (0 Talkback[s]) (2630 reads) (Other stories by M-Saunders)
"...the page-cache is now lockless; much improved Direct I/O scalability and performance; delayed allocation for ext4; multiqueue networking; an alternative hibernation implementation based on kexec/kdump;..."