On Fri, Jun 13, 2025 at 02:46:35PM -0700, Joanne Koong wrote: > As part of the larger effort to have iomap buffered io code support > generic io, replace map_blocks() with writeback_folio() and move the > bio writeback code into a helper function, iomap_bio_writeback_folio(), > that callers using bios can directly invoke. Hmm, what I had in mind with my suggestion was to only have a single callback, where the guts of the current code are just called by the block based file systems. I ended up implementing this this morning to see if it's feasible, and it works fine so far. Let me send out what I've got.