On Fri, Feb 03, 2023 at 09:36:53AM +1100, Dave Chinner wrote: > Rather than adding more complexity to the legacy bufferhead code, > wouldn't it be better to switch the block device mapping to use > iomap+folios and get rid of the use of bufferheads altogether? It's not that simple unfortunately :( All file systems that use buffer heads also use them on the block device for metadata. I have a WIP block device iomap conversion, but it still has to offer buffer_heads similar to the legacy path in iomap to make all that work.
