Re: [RFC][PATCH 0/5] tracing: Add new file system tracefs

[Tejun Heo <tj@kernel.org>]

On Wed, Jan 21, 2015 at 11:35:53PM -0500, Steven Rostedt wrote:
> On Thu, 22 Jan 2015 04:23:30 +0000
> Al Viro <viro@ZenIV.linux.org.uk> wrote:
> 
> > I would recommend against that - kernfs is overburdened by their need
> > to accomodate cgroup weirdness.  IMO it's not a good model for
> > anything, other than an anti-hard-drugs poster ("don't shoot that
> > shit, or you might end up hallucinating _this_").
> 
> OK, I'm not the only one that thought kernfs seemed to go all over the
> place. I guess I now know why. It was more of a hook for cgroups. I can

Again, not true at all.

> understand why cgroups needed it, as I found that creating files from a
> mkdir and removing them with rmdir causes some pain in vfs with
> handling of locking. As that's what I'm working on overcoming now.
> 
> But I think I solved my issues (testing it now), and hopefully by
> tomorrow, I'll have a V2 out.

I'd strongly recomment just using kernfs.  If you find something wrong
with it, let's fix it, please.

Thanks.

-- 
tejun