linux-kernel - Re: [PATCH] fs: stub out ioprio_check_cap for !CONFIG

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Date:   Tue, 5 Jun 2018 13:59:44 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Al Viro <viro@...iv.linux.org.uk>
Cc:     Jeff Moyer <jmoyer@...hat.com>, Christoph Hellwig <hch@....de>,
        Adam Manzanares <adam.manzanares@....com>,
        Arnd Bergmann <arnd@...db.de>, Ingo Molnar <mingo@...nel.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] fs: stub out ioprio_check_cap for !CONFIG_BLOCK

On Tue, Jun 5, 2018 at 1:47 PM, Arnd Bergmann <arnd@...db.de> wrote:
> When CONFIG_BLOCK is disabled, we now run into a link error:
>
> fs/aio.o: In function `aio_prep_rw':
> aio.c:(.text+0xf68): undefined reference to `ioprio_check_cap'
>
> Since the priorities are unused without block devices, this adds a stub
> that always returns success.
>
> Fixes: d9a08a9e616b ("fs: Add aio iopriority support")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
> Not sure if my assertion is correct, please check that returning zero
> actually makes sense here.

Nevermind, I just saw a different patch fixes this in today's linux-next

       Arnd