827c75471f
Here are some fixes I derived from the mach 3.0 VM system a couple of months ago. At the time, I was giving the memory object routines a good looking at, trying to fix the long-standing problem where vm_object_collapse() sometimes fails to collapse objects left over from the exit of a forked child. As bde has noted, the problem seems to occur when portions of the parent are paged out. These "lost" memory objects, which can eat up a huge amount of swap space, are reclaimed when the parent responsible for the fork()s is killed. |
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