linux-kernel - Re: [PATCH scsi] Add NULL checking of return value from scsi_cmd_to

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Date:	Thu, 27 Sep 2012 08:44:15 +0400
From:	James Bottomley <James.Bottomley@...senPartnership.com>
To:	"Martin K. Petersen" <martin.petersen@...cle.com>
Cc:	Li Zhong <zhong@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>, linux-scsi@...r.kernel.org,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [PATCH scsi] Add NULL checking of return value from
 scsi_cmd_to_driver()

On Wed, 2012-09-26 at 22:02 -0400, Martin K. Petersen wrote:
> >>>>> "James" == James Bottomley <James.Bottomley@...senPartnership.com> writes:
> 
> James> Plus, I think it fixes a bug where you get different behaviours
> James> from REQ_TYPE_BLOCK_PC commands when a driver is and isn't
> James> attached (I've cc'd Martin to see what he thinks).
> 
> I'm fine with having the eh action be triggered for FS requests only, if
> that's what you're asking?

Sort of ... I was thinking do it for all non REQ_TYPE_BLOCK_PC commands
(which includes flush and other strange types), but if you think it
should only be for REQ_TYPE_FS, that's fine too.

James



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