Messages in this thread | | | Date | Fri, 4 Apr 2014 08:03:59 -0400 | From | Tejun Heo <> | Subject | Re: [GIT PULL] cgroup changes for v3.15-rc1 |
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On Thu, Apr 03, 2014 at 01:02:45PM -0700, Linus Torvalds wrote: > > The cgroup_root should be destroyed but it isn't, I think. We'd need > > to bump cgroup_root's refcnt only when a new sb is created. It's > > kinda ugly. Hmmm... > > Ok, so I guess we can use that "new_sb_created" thing, and I'll redo > my merge resolution to reflect that. I do find this incredibly ugly.
I apparently missed the issue and designed the interface without considering this ugliness. Maybe kernfs could be made to wrap rather than providing mount/kill_sb() functions and hide details about sb or we can simply add fstype->umount() so that there's symmetry; however, the problem is kernfs-specific and other kernfs users would have single static backing store and won't need to care about this, so, for now, I think what it's a ugly but acceptable compromise.
Thanks.
-- tejun
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