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

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Message-ID: <20150121233553.19d9ac5c@grimm.local.home>
Date:	Wed, 21 Jan 2015 23:35:53 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC][PATCH 0/5] tracing: Add new file system tracefs

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