On Wed, Apr 12, 2023 at 12:18:29PM +0200, Hannes Reinecke wrote: > Ceterum censeo ... > > Having looked at implementing large blocksizes I constantly get bogged down > by buffer_heads and being as they are intricately linked into filesystems > and mm. > > And also everyone seems to have agreed to phase out buffer_heads eventually. > > So maybe it's time to start discussing exactly _how_ this could be done. > And LSF/MM seems to be the idea location for it. > > So far I've came across the following issues: > > - reading superblocks / bread(): maybe convert to ->read_folio() ? > - bh_lru and friends (maybe pointless once bread() has been converted) > - How to handle legacy filesystems still running on buffer_heads > > I'm sure this is an incomplete list, and I'm equally sure that several > people have their own ideas what should or need to be done. > > So this BOF will be about collecting these ideas and coming up with a design > how we can deprecated buffer_heads. Might be worth reviewing this thread: https://lore.kernel.org/linux-fsdevel/20230129044645.3cb2ayyxwxvxzhah@garbanzo/
