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/freebsd-10.0-release/sys/vm/
H A Dvm_radix.hdiff 226876 Fri Oct 28 01:54:09 MDT 2011 jeff - Use a single uintptr_t for the root of the radix node that encodes the
height and a pointer so that the update to the root is atomic. This
permits safe lookups in parallel with tree expansion. Shrinking the
space requirements is a small bonus.
H A Dvm_radix.cdiff 226876 Fri Oct 28 01:54:09 MDT 2011 jeff - Use a single uintptr_t for the root of the radix node that encodes the
height and a pointer so that the update to the root is atomic. This
permits safe lookups in parallel with tree expansion. Shrinking the
space requirements is a small bonus.

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