linux-kernel - Re: ata

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1204850398.3062.111.camel@localhost.localdomain>
Date:	Thu, 06 Mar 2008 18:39:58 -0600
From:	James Bottomley <James.Bottomley@...senPartnership.com>
To:	Tejun Heo <htejun@...il.com>
Cc:	Mark Lord <liml@....ca>, Matthew Wilcox <matthew@....cx>,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jeff Garzik <jeff@...zik.org>
Subject: Re: ata_ram driver

On Fri, 2008-03-07 at 09:28 +0900, Tejun Heo wrote:
> James Bottomley wrote:
> >> Yeap, sure.  It's the combination of things that always made me put this
> >> off.  Is there a function I can call to just shutdown the host instead
> >> of destroying it?
> > 
> > Not really ... the process of unbinding the ULDs causes their remove
> > methods to call shudown.  It is possible to separate this in the ULDS;
> > but the original design was to make remove and shutdown be similar for
> > the very reason that if you're removing the driver with unflushed data
> > in the cache, we'd really like it flushed (flush is called from
> > shutdown) because you have no way to talk to the device after this
> > without reinserting the driver.
> 
> The problem is that libata EH and other stuff aren't ready to let go of
> the SCSI host up until the last moment and that last moment can't be
> moved before SCSI host destruction because shutdown sequence (flush and
> spindown) requires live EH.  I think this can be solved by shooting down
> individual sdev's instead of destroying the scsi_host.

Basically what scsi_scan.c:scsi_forget_host() does?  It's used
internally at the moment, but I suppose we could export it.

James


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/