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Message-ID: <35fb2e590510290458u47ad70d2s1f5956cb47c193c0@mail.gmail.com>
Date: Sat, 29 Oct 2005 12:58:58 +0100
From: Jon Masters <jonmasters@gmail.com>
Reply-To: jonathan@jonmasters.org
To: Evgeny Stambulchik <Evgeny.Stambulchik@weizmann.ac.il>
Subject: Re: Weirdness of "mount -o remount,rw" with write-protected floppy
Cc: linux-kernel@vger.kernel.org
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References: <4360C0A7.4050708@weizmann.ac.il>
	 <35fb2e590510270805h1739b19chf0b719948aa6f4f@mail.gmail.com>
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On 10/27/05, Jon Masters <jonmasters@gmail.com> wrote:
> On 10/27/05, Evgeny Stambulchik <Evgeny.Stambulchik@weizmann.ac.il> wrote:
>
> > # mount /dev/fd0 /mnt/floppy/
> > mount: block device /dev/fd0 is write-protected, mounting read-only
> > # mount -o remount,rw /mnt/floppy
> > # echo $?
> > 0
>
> Oops. That looks like a bug.

Callchain is:

    sys_mount -> do_mount -> do_remount

and that then calls:

    do_remount_sb

which does:

    if (!(flags & MS_RDONLY) && bdev_read_only(sb->s_bdev))
                 return -EACCES;

So I'm missing something. I'll have another look, it's failing somewhere else.

Jon.
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