tree e09060e41e1bd966e56ccc566a05325eca5f2628
parent a8334d4fbb80fe5c09fedf9aab461c48f7d6e305
author Barret Rhoden <brho@cs.berkeley.edu> 1569442673 -0400
committer Barret Rhoden <brho@cs.berkeley.edu> 1570569071 -0400

slab: use a singly-linked list for bufctls

It saves a pointer for each bufctl.

I glanced at arena.c for the same thing.  The code for those
FOREACH-remove_if_X are a little more involved, but not a big deal.  But
the big one is untrack_free_seg, which isn't called from a list-foreach.

Signed-off-by: Barret Rhoden <brho@cs.berkeley.edu>