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/freebsd-11-stable/sys/vm/ | ||
H A D | vm_radix.c | diff 249427 Fri Apr 12 18:22:19 MDT 2013 alc Although we perform path compression to reduce the height of the trie and the number of interior nodes, we always create a level zero interior node at the root of every non-empty trie, even when that node is not strictly necessary, i.e., it has only one child. This change is the first step in eliminating those unnecessary level zero interior nodes. Specifically, it updates all of the lookup functions so that they do not require a level zero interior node at the root. Reviewed by: attilio, jeff (an earlier version) Sponsored by: EMC / Isilon Storage Division |
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