linux-kernel - Re: LXC broken with 5.10-stable?, ok with 5.9-stable (Re: Linux 5.10.3)

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Message-ID: <CAHk-=wgy6NQrTMwiEWpHUPvW-nfgX7XrBrsxQ6TkRy6NasSFQg@mail.gmail.com>
Date:   Sun, 27 Dec 2020 11:05:52 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Jussi Kivilinna <jussi.kivilinna@....fi>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        stable <stable@...r.kernel.org>, lwn@....net,
        Jiri Slaby <jslaby@...e.cz>
Subject: Re: LXC broken with 5.10-stable?, ok with 5.9-stable (Re: Linux 5.10.3)

On Sun, Dec 27, 2020 at 10:39 AM Jussi Kivilinna <jussi.kivilinna@....fi> wrote:
>
> 5.10.3 with patch compiles fine, but does not solve the issue.

Duh. adding the read_iter only fixes kernel_read(). For splice, it also needs a

        .splice_read = generic_file_splice_read,

in the file operations, something like this...

Does that get things working?

              Linus

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