[PATCH v3] malloc: send freed small chunks to smallbin

[DJ Delorie]

Florian Weimer <fweimer@redhat.com> writes:
> I think adding a chunk to a smallbin does not bypass coalescing.  Adding
> it to tcache or a fastbin does, but smallbins are handled by the lower
> allocator.  Or do I misunderstand your concern?

That's the point.  If we're putting chunks in the smallbin where
previously we didn't (the unsorted bin is not coalesced) then those
chunks are merged with adjacent chunks earlier than previously.  If this
happens often enough, it could have a significant effect on RSS.