rcu: Improve tree.c comments and add code cleanups

This commit cleans up some comments and code in kernel/rcu/tree.c.

Signed-off-by: Zhouyi Zhou <zhouzhouyi@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Zhouyi Zhou 2021-03-30 13:47:42 -07:00 • committed by Paul E. McKenney
commit 277ffe1b70