linux-kernel - Re: [PATCH] proc: Add a way to make proc files writable

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Message-Id: <20241031191453.a4c55e8b2bfb4bf8349f4287@linux-foundation.org>
Date: Thu, 31 Oct 2024 19:14:53 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Qingjie Xing <xqjcool@...il.com>
Cc: christophe.jaillet@...adoo.fr, willy@...radead.org, brauner@...nel.org,
 adobriyan@...il.com, viro@...iv.linux.org.uk, linux-kernel@...r.kernel.org,
 linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] proc: Add a way to make proc files writable

On Thu, 31 Oct 2024 18:39:20 -0700 Qingjie Xing <xqjcool@...il.com> wrote:

> Provide an extra function, proc_create_single_write_data() that
> act like its non-write version but also set a write method in
> the proc_dir_entry struct. Alse provide a macro
> proc_create_single_write to reduces the boilerplate code in the callers.
> 

Please fully describe the reason for making this change.

Also, we are reluctant to add a new interface to Linux unless we add
new users of that interface at the same time.

Thanks.