linux-kernel - Re: [PATCH bpf-next 3/4] bpf: Introduce path iterator

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Message-ID: <20250529173810.GJ2023217@ZenIV>
Date: Thu, 29 May 2025 18:38:10 +0100
From: Al Viro <viro@...iv.linux.org.uk>
To: Song Liu <song@...nel.org>
Cc: Jan Kara <jack@...e.cz>, bpf@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, kernel-team@...a.com,
	andrii@...nel.org, eddyz87@...il.com, ast@...nel.org,
	daniel@...earbox.net, martin.lau@...ux.dev, brauner@...nel.org,
	kpsingh@...nel.org, mattbobrowski@...gle.com, amir73il@...il.com,
	repnop@...gle.com, jlayton@...nel.org, josef@...icpanda.com,
	mic@...ikod.net, gnoack@...gle.com
Subject: Re: [PATCH bpf-next 3/4] bpf: Introduce path iterator

On Thu, May 29, 2025 at 09:53:21AM -0700, Song Liu wrote:

> Current version of path iterator only supports walking towards the root,
> with helper path_parent. But the path iterator API can be extended
> to cover other use cases.

Clarify the last part, please - call me paranoid, but that sounds like
a beginning of something that really should be discussed upfront.