Simon Sapin <simon.sapin@octobus.net> [Tue, 15 Jun 2021 12:34:14 +0200] rev 47426
revlog: use file read caching for sidedata
The previous changeset extracted this caching logic from the revlog class into
a new class. Adding a new instance of that class allows using the same logic
for side data.
Differential Revision: https://phab.mercurial-scm.org/D10879