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

From: Steven Rostedt
Date: Wed Jan 21 2015 - 23:36:12 EST


On Thu, 22 Jan 2015 04:23:30 +0000
Al Viro <viro@xxxxxxxxxxxxxxxxxx> 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
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.

-- Steve
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