Post Syndicated from jake original https://lwn.net/Articles/974958/

The iomap
block-mapping abstraction is being used by more filesystems, in part
because of its support for large folios. But there are some challenges in
adopting iomap, which was the topic of a discussion led by Ritesh Harjani
in a combined storage and filesystem session at the 2024 Linux Storage,
Filesystem, Memory Management, and BPF Summit. One of the main trouble
spots is how to handle metadata, which is not an area that iomap has been aimed
at.