On 5/31/21 10:21 AM, Arnd Bergmann wrote:
On Mon, May 31, 2021 at 9:38 AM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
On Mon, May 31, 2021 at 10:25:26AM +0300, Christoph Hellwig wrote:
The raw driver used to provide direct unbuffered access to block devices
before O_DIRECT was invented. It has been obsolete for more than a
decade.
What? Really? We can finally do this? Yes!
For some reason, I thought there was some IBM userspace tools that
relied on this device, if not, then great!
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
Link: https://lore.kernel.org/lkml/Pine.LNX.4.64.0703180754060.6605@CPE00045a9c397f-CM001225dbafb6/
The discussion from 2007 is the last one I could find on lore that has
useful information on when and why this was not removed in the past.
The driver was scheduled from a 2005 removal in 2004, but not removed
because both Red Hat and SuSE relied on the feature in their distros.
From what I could find out, this continued to be the case in Red Hat
Enterprise Linux 6 and SUSE Linux Enterprise server 11 that were
supported between 2009 and 2020, but the following versions dropped
the support.
Which I can confirm for SUSE.
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@xxxxxxx +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
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