Hello, Akira! In response to your excellent feedback on my attempt to add a lumber analogy to the temporal properties of locking, I have added the following commits: a7a722ddae4c ("SMPdesign: Work in the spacetime partitioning viewpoint") cb7335f0af79 ("locking: Fold saw-kerf section into existing 7.1.4") 3d14659144cd ("defer/rcuusage: Relate RCU time/space properties to other primitives") For completeness, the lumber analogy was attempted in these commits: 16131c2c320c ("locking: Add section describing temporal properties of locks") 8da652f6c958 ("locking: Add labels to saw-kerf diagram") 7f5c537e8a46 ("locking: Wordsmithing") If these updates look good to you, I will cut a release. Thanx, Paul