Welcome to the LWN.net Weekly Edition for March 25, 2021

• WireGuard bounces off FreeBSD—for now: FreeBSD 13 was set to release with WireGuard support; then things got messy.
• Clarifying memory management with page folios: a new abstraction to help keep different types of pages straight — and improve performance too.
• Lockless patterns: more read-modify-write operations: the series continues with a deeper look at what can be done with RMW.
• Patching until the COWs come home (part 1): an exploitable bug turns up in the kernel's complex copy-on-write code.
• Extending Python's enums: Python developers explore ways to add membership tests to enum types.

This week's edition also includes these inner pages:

• Brief items: Brief news items from throughout the community.
• Announcements: Newsletters, conferences, security updates, patches, and more.

Please enjoy this week's edition, and, as always, thank you for supporting LWN.net.