Post Syndicated from original https://lwn.net/Articles/933616/

At the end of our February article about
the debate around the composefs read-only,
integrity-protected
filesystem, it was predicted that the topic would come up at the
2023 Linux Storage, Filesystem,
Memory-Management and BPF Summit. That happened on the second day of
the summit when
Alexander Larsson led a session on composefs. While the mailing-list
discussion was
somewhat contentious, the session was less so, since overlayfs can
be made to fit the needs of the composefs use cases. It turns
out that an entirely new
filesystem is not really needed.