+via Godmar Back:
+
+* Project 3 solution needs FS lock.
+
+* Get rid of mmap syscall, add sbrk.
+
+* hash_destroy() should take function arg.
+
+* Make backtrace program accept multiple object file arguments,
+ e.g. add -u option to allow backtracing user program also.
+
+* VM projects do not use enough memory to force eviction.
+ Should reduce user limit or increase memory consumption.