On Thu, Feb 20, 2020 at 03:02:22PM -0800, Linus Torvalds wrote: > On Thu, Feb 20, 2020 at 12:48 PM Eric W. Biederman > <ebiederm@xxxxxxxxxxxx> wrote: > > > > Linus, does this approach look like something you can stand? > > A couple of worries, although one of them seem to have already been > resolved by Al. > > I think the real gatekeeper should be Al in general. But other than > the small comments I had, I think this might work just fine. > > Al? I'll need to finish RTFS there; I have initially misread that patch, actually - Eric _is_ using that thing both for those directories and for sysctl inodes. And the prototype for that machinery (the one he'd pulled from proc_sysctl.c) is playing with pinning superblocks way too much; for per-pid directories that's not an issue, but for sysctl table removal you are very likely to hit a bunch of evictees on the same superblock...
