On Wed, Jun 28, 2023 at 07:23:54PM -0700, Ira Weiny wrote: > Matthew Wilcox wrote: > > Here's a more comprehensive read_folio patch. It's not at all > > efficient, but then if we wanted an efficient vboxsf, we'd implement > > vboxsf_readahead() and actually do an async call with deferred setting > > of the uptodate flag. I can consult with anyone who wants to do all > > this work. > > > > I haven't even compiled this, just trying to show the direction this > > should take. > > I'm a bit confused. Is this progressing toward having the folio passed > down to vboxsf_read() or just an expanded vboxsf_read_folio which can > handle larger folios as well as fix the kmap? This just handles large folios & switches to kmap_local_folio(). Doing this properly is a _lot_ of work, and needs someone who can commit to actually testing it.
