linux-kernel - Re: [PATCH 09/16] initrd: remove the BLKFLSBUF call in handle

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Message-ID: <54AE9966-852F-4F42-A720-8D6053F0EF52@zytor.com>
Date:   Fri, 03 Jul 2020 19:19:22 -0700
From:   hpa@...or.com
To:     antlists <antlists@...ngman.org.uk>,
        Christoph Hellwig <hch@....de>, linux-kernel@...r.kernel.org
CC:     Song Liu <song@...nel.org>, Al Viro <viro@...iv.linux.org.uk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-raid@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 09/16] initrd: remove the BLKFLSBUF call in handle_initrd

On July 3, 2020 5:18:48 PM PDT, antlists <antlists@...ngman.org.uk> wrote:
>On 03/07/2020 04:40, H. Peter Anvin wrote:
>> On 2020-06-15 05:53, Christoph Hellwig wrote:
>>> BLKFLSBUF used to be overloaded for the ramdisk driver to free the
>whole
>>> ramdisk, which was completely different behavior compared to all
>other
>>> drivers.  But this magic overload got removed in commit ff26956875c2
>>> ("brd: remove support for BLKFLSBUF"), so this call is entirely
>>> pointless now.
>>>
>>> Signed-off-by: Christoph Hellwig <hch@....de>
>> 
>> Does *anyone* use initrd as opposed to initramfs anymore? It would
>seem
>> like a good candidate for deprecation/removal.
>> 
>Reading the gentoo mailing list, it seems there's a fair few people who
>
>don't use initramfs. I get the impression they don't use initrd either,
>
>though.
>
>I don't know too much about booting without an initramfs - I switched 
>ages ago - so what is possible and what they're actually doing, I don't
>
>know.
>
>Cheers,
>Wol

Not using any init userspace at all is an entirely different issue.
-- 
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