"User-space data may not be resident in RAM"

Posted Jul 9, 2020 17:06 UTC (Thu) by JGR (subscriber, #93631)
In reply to: "User-space data may not be resident in RAM" by Fowl
Parent article: Sleepable BPF programs

Your fork_nocow() is probably closest to vfork(2), which is approximately the same as forking but without a new stack or any CoW. However vfork is only really useful for the child to immediately call exec().