linux-kernel - RE: [PATCH] drivers/scsi/emcctd: drivers/scsi/emcctd: Client driver implementation for EMC-Symmetrix GuestOS emulated Cut-Through Device

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: <82807C73E0BDBB498164AAE7B8F6A1481C61AE33@MX105CL01.corp.emc.com>
Date:	Mon, 25 Jan 2016 09:30:47 +0000
From:	"Singhal, Maneesh" <Maneesh.Singhal@....com>
To:	Johannes Thumshirn <jthumshirn@...e.de>
CC:	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"JBottomley@...n.com" <JBottomley@...n.com>,
	"martin.petersen@...cle.com" <martin.petersen@...cle.com>,
	"linux-api@...r.kernel.org" <linux-api@...r.kernel.org>
Subject: RE: [PATCH] drivers/scsi/emcctd: drivers/scsi/emcctd: Client driver
 implementation for  EMC-Symmetrix GuestOS emulated Cut-Through Device

Thanks Johannes for generously reviewing my patch. It indeed is going to improve the thing a lot. I agree with all your comments so far, and will submit a newer patch soon. 
Since this is my first patch, I have couple of questions regarding submitting the patch:

1.  Is there a page/place where I can see the review comments rather neatly ?, finding out all the comments and infact reading to entire code on text file is cumbersome. If there is no way, then its fine,... I can live with it.
2. When I address the review comments and want to resubmit the patch, do I need to submit the incremental patch or the entire code patch again ? git-format-patch gives me incremental patch only.

Thanks
Maneesh

> -----Original Message-----
> From: Johannes Thumshirn [mailto:jthumshirn@...e.de]
> Sent: Monday, January 25, 2016 2:56 PM
> To: Singhal, Maneesh
> Cc: linux-scsi@...r.kernel.org; linux-kernel@...r.kernel.org;
> JBottomley@...n.com; martin.petersen@...cle.com; linux-
> api@...r.kernel.org
> Subject: Re: [PATCH] drivers/scsi/emcctd: drivers/scsi/emcctd: Client
> driver implementation for EMC-Symmetrix GuestOS emulated Cut-
> Through Device
> 
> On Sat, Jan 23, 2016 at 05:51:50AM +0000, Singhal, Maneesh wrote:
> > Thanks for your time. My replies inlined...
> >
> 
> [...]
> 
> > > > +		}
> > > > +
> > >
> > > You don't do any cleanup work at
> > > ctd_scsi_response_sanity_check_complete. You could just reutrn 0
> > > here as well.
> > [MS>] Just avoiding multiple exit points from the function
> 
> Please have a look at Documentation/CodingStyle Chapter 7:
> Centralized exiting of functions. Especially this part:
> 
> <quote>
> The goto statement comes in handy when a function exits from
> multiple locations and some common work such as cleanup has to be
> done.  If there is no cleanup needed then just return directly.
> </quote>
> 
> and the example below that section.
> 
> > >
> > > > +
> > > > +		ctd_dprintk_crit(
> 
> [...]
> 
> > > > +	if (request && request->io_timeout < EMCCTD_MAX_RETRY) {
> > >
> > > The following block is a bit long and therefore it's hard to spot an
> > > eventual error of handling the io_mgmt_lock. Can't it be factored
> > > out in a helper function?
> > >
> > [MS>] I know its little longer, but actually fits logically together... Will
> see if it can be factored. Not sure though.
> 
> Yes please. It's not uber important but short functions and paths are
> generally favoured when debugging and reviewing code.
> 
> 
> Thanks,
> 	Johannes
> 
> --
> Johannes Thumshirn                                          Storage
> jthumshirn@...e.de                                +49 911 74053 689
> SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
> GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG
> Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D
> 2D76 0850