From: Simmy Turner (turner@capitol.com)
Date: 01/24/92 

From: turner@capitol.com (Simmy Turner)
Subject: linux/mm/memory.c
Date: Fri, 24 Jan 1992 06:33:44 GMT

While trying to add swapping to files, I ran into the following problem that
I don't understand. In the function copy_page_tables(), there is a call to
read_swap_page(). What is that called needed for?

Here is an excerpt from the code.

memory.c: line 149

                if (!(1 & this_page)) {
                        if (!(new_page = get_free_page()))
                                return -1;
>>> read_swap_page(this_page>>1, (char *) new_page);
                        *to_page_table = this_page;
                        *from_page_table = new_page | (PAGE_DIRTY | 7);
                        continue;
                }