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

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Date:   Tue, 7 Jul 2020 11:03:50 +0200
From:   Christoph Hellwig <hch@....de>
To:     "H. Peter Anvin" <hpa@...or.com>
Cc:     Christoph Hellwig <hch@....de>, linux-kernel@...r.kernel.org,
        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 Thu, Jul 02, 2020 at 08:40:31PM -0700, 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.

I thought about that as well.  I think deprecating it at least is a good
idea and can add a patch doing that to the next version.