Ted Ts’o sent out the EXT4 updates today for Linux 6.11. He explained in that pull request:
“Many cleanups and bug fixes in ext4, especially for the fast commit feature. Also some performance improvements; in particular, improving IOPS and throughput on fast devices running Async Direct I/O by up to 20% by optimizing jbd2_transaction_committed().”
Wait til your table with all the checksums gets messed up on an “older” btrfs install. Happened to me on a VM because I didn’t know copy-on-write should be disabled for large frequently partially updated files. It also slowed that VMs IO down a lot.
Like most file systems, BTRFS is great if you know the edge cases. I recently moved to ZFS on my new work system, which has been a great change in terms of in-line snapshots and the like.
If EXT4 meets your needs, that’s awesome. If you understand how to use a different FS well or are willing to learn (and risk), I would also encourage other options as well.