linux-kernel - Re: [PATCH 00/62] initrd: remove classic initrd support

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Message-ID: <CALu+AoRt5wEgx-=S263CReDf8FmLWwjs8dF9cX4_jFcMUkuujQ@mail.gmail.com>
Date: Tue, 16 Sep 2025 09:48:40 +0800
From: Dave Young <dyoung@...hat.com>
To: Askar Safin <safinaskar@...omail.com>
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Linus Torvalds <torvalds@...ux-foundation.org>, 
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Subject: Re: [PATCH 00/62] initrd: remove classic initrd support

Hi,

On Sat, 13 Sept 2025 at 06:42, Askar Safin <safinaskar@...omail.com> wrote:
>
> Intro
> ====
> This patchset removes classic initrd (initial RAM disk) support,
> which was deprecated in 2020.
> Initramfs still stays, and RAM disk itself (brd) still stays, too.

There is one initrd use case in my mind, it can be extended to co-work
with overlayfs as a kernel built-in solution for initrd(compressed fs
image)+overlayfs.   Currently we can use compressed fs images
(squashfs or erofs) within initramfs,  and kernel loop mount together
with overlayfs, this works fine but extra pre-mount phase is needed.

Thanks
Dave