On Tue, 8 Jan 2019 12:26:35 -0800 Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote: > > Would it be excessively cautious to put a WARN_ON_ONCE() in there for a > > while? > > I think it would ... it'd get in the way of a subsequent patch to store > only head pages in the page cache. OK, shall grab. Perhaps the changelog could gain a few words explaining the history, etc.
