NAME
ipc_init - initialise ipc subsystem
SYNOPSIS
int ipc_init(void);
ARGUMENTS
void
no arguments
DESCRIPTION
The various sysv ipc resources (semaphores, messages and shared memory) are initialised.
A callback routine is registered into the memory hotplug notifier chain: since msgmni scales to lowmem this callback routine will be called upon successful memory add / remove to recompute msmgni.