joyent/node — pull request #4386 by bnoordhuis (2012-12-07 06:12:53+00:00)
Title: buffer: allocate memory with mmap()

Work around an issue with the glibc malloc() implementation where memory blocks
are never returned to the operating system when they are allocated with brk()
and have overlapping lifecycles.

Fixes #4283.

Reviewers: @indutny @piscisaureus