Re: [RFC PATCH 0/6] debugfs: Replace dentry with an opaque handle in debugfs API

[Al Viro]

On Sun, Feb 09, 2025 at 09:20:20PM -0800, David Reaver wrote:
> Overview
> ========
> 
> This patch series replaces raw dentry pointers in the debugfs API with
> an opaque wrapper struct:
> 
> 	struct debugfs_node {
> 		struct dentry dentry;
> 	};
> 
> Intermediate commits rely on "#define debugfs_node dentry" to migrate
> debugfs users without breaking the build. The final commit introduces
> the struct and updates debugfs internals accordingly.
> 
> Why an RFC?
> ===========
> 
> This is a large change, and I expect a few iterations -- unless this
> entire approach is NACKed of course :) Any advice is appreciated, and
> I'm particularly looking for feedback on the following:

Do not embed struct dentry into anything else.

Do not take over its lifetime rules.

For the record:

	Anything of that sort is going to be vetoed.