On Tue, Jan 15, 2019 at 10:34 PM Dominique Martinet <asmadeus@xxxxxxxxxxxxx> wrote: > > There is a difference with your previous patch though, that used to list no > page in core when it didn't know; this patch lists pages as in core when it > refuses to tell. I don't think that's very important, though. Is there a reason not to return -EPERM in this case? > > If anything, the 0400 user-owner file might be a problem in some edge > case (e.g. if you're preloading git directories, many objects are 0444); > should we *also* check ownership?... Yes, this seems valuable. Some databases with immutable files (e.g. git, as you've mentioned) conceivably operate this way. Josh
