From linux-fsdevel  Sun Apr 28 18:46:05 2024
From: Linus Torvalds <torvalds () linux-foundation ! org>
Date: Sun, 28 Apr 2024 18:46:05 +0000
To: linux-fsdevel
Subject: Re: [PATCH 4/7] swapon(2): open swap with O_EXCL
Message-Id: <CAHk-=wgPpeg1fj4zk0mvCmpYrrs0jVqrFrRONNFgA8Yq6nLTeg () mail ! gmail ! com>
X-MARC-Message: https://marc.info/?l=linux-fsdevel&m=171432981822988

On Sun, 28 Apr 2024 at 11:19, Al Viro <viro@zeniv.linux.org.uk> wrote:
>
> FWIW, pretty much the same can be done with zram - open with O_EXCL and to
> hell with reopening.  Guys, are there any objections to that?

Please do. The fewer of these strange "re-open block device" things we
have, the better.

I particularly dislike our "holder" logic, and this re-opening is one
source of nasty confusion, and if we could replace them all with just
the "O_EXCL uses the file itself as the holder", that would be
absolutely _lovely_.

                Linus