Condition for handling the kernel

Question

In what condition the Kernel handles the fork() system call in System V Unix and in the traditional Unix, while swapping?

Answer 1

Kernel in traditional UNIX creates the duplicate copy of the parent's address space and attaches it to the child's process, though swapping. Kernel in System V Unix, manipulates the page table, region tables, and pfdata table entries, through incrementing the reference count of the region table of shared regions.