From: SF Markus Elfring <elfring@users.sourceforge.net>
To: "Jürgen Groß" <jgross@suse.com>
Cc: linux-scsi@vger.kernel.org, kernel-janitors@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>,
Julia Lawall <julia.lawall@lip6.fr>,
David Vrabel <david.vrabel@citrix.com>,
xen-devel@lists.xenproject.org,
Boris Ostrovsky <boris.ostrovsky@oracle.com>
Subject: Re: [PATCH 2/3] xen-scsiback: One function call less in scsiback_device_action() after error detection
Date: Tue, 19 Jul 2016 16:56:35 +0200 [thread overview]
Message-ID: <8806e9cb-4200-8154-7914-6735805dfbe0@users.sourceforge.net> (raw)
In-Reply-To: <fb5824ad-fb09-e471-7dc4-3e32564cc334@suse.com>
>> @@ -606,7 +606,7 @@ static void scsiback_device_action(struct vscsibk_pend *pending_req,
>> tmr = kzalloc(sizeof(struct scsiback_tmr), GFP_KERNEL);
>> if (!tmr) {
>> target_put_sess_cmd(se_cmd);
>> - goto err;
>> + goto do_resp;
>> }
>
> Hmm, I'm not convinced this is an improvement.
>
> I'd rather rename the new error label to "put_cmd" and get rid of the
> braces in above if statement:
>
> - if (!tmr) {
> - target_put_sess_cmd(se_cmd);
> - goto err;
> - }
> + if (!tmr)
> + goto put_cmd;
>
> and then in the error path:
>
> -err:
> +put_cmd:
> + target_put_sess_cmd(se_cmd);
I am unsure on the relevance of this function on such a source position.
Would it make sense to move it further down at the end?
> +free_tmr:
> kfree(tmr);
How do you think about to skip this function call after a memory
allocation failure?
Regards,
Markus
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next prev parent reply other threads:[~2016-07-19 14:56 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <5307CAA2.8060406@users.sourceforge.net>
[not found] ` <alpine.DEB.2.02.1402212321410.2043@localhost6.localdomain6>
[not found] ` <530A086E.8010901@users.sourceforge.net>
[not found] ` <alpine.DEB.2.02.1402231635510.1985@localhost6.localdomain6>
[not found] ` <530A72AA.3000601@users.sourceforge.net>
[not found] ` <alpine.DEB.2.02.1402240658210.2090@localhost6.localdomain6>
[not found] ` <530B5FB6.6010207@users.sourceforge.net>
[not found] ` <alpine.DEB.2.10.1402241710370.2074@hadrien>
[not found] ` <530C5E18.1020800@users.sourceforge.net>
[not found] ` <alpine.DEB.2.10.1402251014170.2080@hadrien>
[not found] ` <530CD2C4.4050903@users.sourceforge.net>
[not found] ` <alpine.DEB.2.10.1402251840450.7035@hadrien>
[not found] ` <530CF8FF.8080600@users.sourceforge.net>
[not found] ` <alpine.DEB.2.02.1402252117150.2047@localhost6.localdomain6>
[not found] ` <530DD06F.4090703@users.sourceforge.net>
[not found] ` <alpine.DEB.2.02.1402262129250.2221@localhost6.localdomain6>
[not found] ` <5317A59D.4@users.sourceforge.net>
2014-11-02 15:12 ` [PATCH 1/1] PCI: Deletion of unnecessary checks before three function calls SF Markus Elfring
[not found] ` <545649DE.80304@users.sourceforge.net>
2014-11-11 4:07 ` Bjorn Helgaas
2016-07-16 20:20 ` [PATCH 0/3] xen-scsiback: Fine-tuning for scsiback_device_action() SF Markus Elfring
[not found] ` <59e51c7d-f7bb-c55f-d2fe-06dccfef6a99@users.sourceforge.net>
2016-07-16 20:22 ` [PATCH 1/3] xen-scsiback: Delete an unnecessary check before the function call "kfree" SF Markus Elfring
2016-07-16 20:23 ` [PATCH 2/3] xen-scsiback: One function call less in scsiback_device_action() after error detection SF Markus Elfring
2016-07-16 20:24 ` [PATCH 3/3] xen-scsiback: Pass a failure indication as a constant SF Markus Elfring
[not found] ` <fa839c03-b076-0264-c363-5581d0298632@users.sourceforge.net>
2016-07-18 5:01 ` [PATCH 1/3] xen-scsiback: Delete an unnecessary check before the function call "kfree" Juergen Gross
[not found] ` <e447cf62-ffc7-4b82-cff2-947c8874756a@users.sourceforge.net>
2016-07-18 5:05 ` [PATCH 3/3] xen-scsiback: Pass a failure indication as a constant Juergen Gross
[not found] ` <87e55a72-71ad-d0a1-b936-12565bbc6508@users.sourceforge.net>
2016-07-18 5:11 ` [PATCH 2/3] xen-scsiback: One function call less in scsiback_device_action() after error detection Juergen Gross
[not found] ` <fb5824ad-fb09-e471-7dc4-3e32564cc334@suse.com>
2016-07-19 14:56 ` SF Markus Elfring [this message]
2016-07-20 4:35 ` Juergen Gross
[not found] ` <83b0b1e2-900b-eefc-160b-7d837730571c@suse.com>
2016-07-20 5:10 ` SF Markus Elfring
2016-07-20 5:26 ` Juergen Gross
[not found] ` <85b948e0-bf37-dff0-6792-77b5dacef9a0@suse.com>
2016-07-20 11:27 ` [PATCH v2 0/3] xen-scsiback: Fine-tuning for scsiback_device_action() SF Markus Elfring
2016-07-20 11:30 ` [PATCH v2 1/3] xen-scsiback: Delete an unnecessary check before the function call "kfree" SF Markus Elfring
2016-07-20 11:44 ` Juergen Gross
2016-07-20 11:34 ` [PATCH v2 2/3] xen-scsiback: Rename jump labels in scsiback_device_action() SF Markus Elfring
2016-07-20 11:45 ` Juergen Gross
2016-07-20 11:36 ` [PATCH v2 3/3] xen-scsiback: Pass a failure indication as a constant SF Markus Elfring
2016-07-20 11:44 ` Juergen Gross
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