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@(#)swapon.2 4.1 (Berkeley) 05/09/85

C 4 vswapon - add a swap device for interleaved paging/swapping

 vswapon(name)  char *name; 

Vswapon makes the argument block device available to the system for allocation for paging and swapping. The number of blocks to be made available, as well as the names of all potentially available devices are known to the system, and are present in the system configuration file (e.g. /usr/src/sys/conf/confhp.c). swapon(8) There is no way to stop swapping on a disk so that the pack may be dismounted.

This call is peculiar to this version of UNIX.