[$] A change in direction for security-module stacking?

The long-running effort to complete the work on stacking (or composing) theLinux security modules (LSMs) recently encountered a barrier-in the form ofa "suggestion" to discontinue it from Linus Torvalds. His complaintrevolved around the indirect function calls that are used to implementLSMs, but he also did not think much of the effort to switch away fromthose calls. While it does not appear that a major course-change is in storefor LSMs, it is clear that Torvalds is not happy with the direction of thatsubsystem.