From: Christoph Hellwig <hch@infradead.org>
To: Andries Brouwer <aebr@win.tue.nl>,
Pierre Ossman <drzeus-list@drzeus.cx>,
Al Viro <viro@ftp.uk.linux.org>, Jens Axboe <axboe@suse.de>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] MMC block removable flag
Date: Sat, 8 Jan 2005 12:05:17 +0000 [thread overview]
Message-ID: <20050108120517.GA27414@infradead.org> (raw)
In-Reply-To: <20050108110957.D7065@flint.arm.linux.org.uk>
On Sat, Jan 08, 2005 at 11:09:57AM +0000, Russell King wrote:
> Your point 2 isn't user space though.
>
> Also, it's buggy. Consider a SCSI PCMCIA card with SCSI disks attached.
> When you eject that card, your SCSI disks disappear, yet they aren't
> marked as removable. If user space is relying on /sys/block/*/removable
> to tell it if things may go away, then user space is buggy.
It means removable media. The actual device can disappear for just about
any driver these days, considering pci hotplug or PCMCIA or usb or..
> Maybe it's for devices which may be present (eg, floppy driver), but
> which have removable media (eg, floppy disk), rather than removable
> devices?
Yes. Else there would be very little driver that don't set the flag.
next prev parent reply other threads:[~2005-01-08 12:05 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-30 2:14 [PATCH] MMC block removable flag Pierre Ossman
2004-12-30 9:54 ` Russell King
2004-12-30 15:56 ` Pierre Ossman
2005-01-07 12:39 ` Russell King
2005-01-07 14:00 ` Andries Brouwer
2005-01-08 11:09 ` Russell King
2005-01-08 12:05 ` Christoph Hellwig [this message]
2005-01-08 12:45 ` Russell King
2005-01-08 13:07 ` Andries Brouwer
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