On Wed, Jun 08, 2022 at 05:02:40PM +0100, Matthew Wilcox wrote: > On Wed, Jun 08, 2022 at 01:02:22AM -0700, Christoph Hellwig wrote: > > On Sun, Jun 05, 2022 at 08:38:47PM +0100, Matthew Wilcox (Oracle) wrote: > > > If the folio is large, it may overlap the beginning or end of the > > > unused range. If it does, we need to avoid invalidating it. > > > > It's never going to be larger for ext4, is it? But either way, > > those precautions looks fine. > > I don't want to say "never". Today, it's not, but if ext4 ever does > gain support for large folios, then this is a precaution it will need > to take. I'm trying not to leave traps when I do conversions. FYI, this wasn't an objection to the patch, just a hint that the commit log could spell this out a bit better.
