The pull request of XFS feature updates for Linux 6.13 sums up the activity as " a major rework that Darrick [Wong] and Christoph [Hellwig] have been doing on XFS's real-time volume, coupled with a few features to support this rework. "
The XFS Linux 6.13 highlights include:
* convert perag to use xarrays
* create a new generic allocation group structure
* Add metadata inode dir trees
* Create in-core rt allocation groups
* Shard the RT section into allocation groups
* Persist quota options with the enw metadata dir tree
* Enable quota for RT volumes
* Enable metadata directory trees
* Some bugfixes
So for real-time (RT) volumes is now quota support, in-core RT allocation groups, and other low-level enhancements.
At least the XFS file-system updates managed to be merged without any drama.