[PATCH] malloc: Move mmap code out of __libc_free hotpath

[Wilco Dijkstra]

Hi DJ,

> ... the rest of this looks ok, but it leaves _libc_free and _int_free as
> being very small functions.  Do we need them?  Or are we relying on the
> inlining to make them efficient?

No we don't need them - the next step is move _int_free-* into __libc_free,
simplify the code and use a similar tailcall approach as __libc_malloc. This
gives similar speedups as malloc!

Cheers,
Wilco