tree e4d818edcf6f3c90c5aa299bec6024f46636b7b7
parent 9309768c54244c3eeb6133c1bee451a0f263ee0c
author Keith Randall <khr@google.com> 1517951191 -0800
committer Keith Randall <khr@golang.org> 1517962534 +0000

gocore: distinguish released memory

Split up the free span space into 2 categories, the space which we
have released back to the OS vs the space we haven't.

Change-Id: I897c57a10e5cb4ab7321711fece8addcf5f4ab19
Reviewed-on: https://go-review.googlesource.com/92417
Reviewed-by: Austin Clements <austin@google.com>