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From: Olaf Hering <olaf@aepfle.de>
To: Paulina Szubarczyk <paulinaszubarczyk@gmail.com>
Cc: wei.liu2@citrix.com, ian.campbell@citrix.com,
	George.Dunlap@eu.citrix.com, dario.faggioli@citrix.com,
	ian.jackson@eu.citrix.com, xen-devel@lists.xenproject.org,
	roger.pau@citrix.com
Subject: Re: [PATCH v3 6/7] libxl: Fix libxl_set_memory_target return value
Date: Wed, 20 Apr 2016 22:56:09 +0200	[thread overview]
Message-ID: <20160420205609.GD9937@gmail.com> (raw)
In-Reply-To: <1461139444-12342-7-git-send-email-paulinaszubarczyk@gmail.com>

On Wed, Apr 20, Paulina Szubarczyk wrote:

> libxl_set_memory_target seems to have the following return values:
> 
> * 1 on failure, if the failure happens because of a xenstore error *or*
> * invalid target
> 
> * -1 if the setmaxmem hypercall
> 
> * -errno if the set_pod_target hypercall target fails
> 
> * 0 on success
> 
> Make it consistently return ERROR_FAIL on failure, unless the
> parameters were invalid, in which case return ERROR_INVAL.
> 
> In accordance with CODING_SYTLE:
> 
> 1. Leave rc uninitialized, and set when an error is detected
> 
> 2. Use 'r' for return values to functions whose return values are a
> different error space (like xc_domain_setmaxmem and
> xc_domain_set_pod_target)
> 
> 3. Use 'lrc' for return values to local functions libxl__*
> where a failure means retry, rather than fail the whole function
> (libxl__fill_dom0_memory_info), to reduce the risk of that.
> 
> Signed-off-by: George Dunlap <George.Dunlap@eu.citrix.com>
> Signed-off-by: Paulina Szubarczyk <paulinaszubarczyk@gmail.com>

Reviewed-by: Olaf Hering <olaf@aepfle.de>

Olaf

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  reply	other threads:[~2016-04-20 20:56 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-20  8:03 [PATCH v3 00/10] xl: improve coding style and return more failure on Paulina Szubarczyk
2016-04-20  8:03 ` [PATCH v3 1/7] libxl: improve return codes for some pci related functions Paulina Szubarczyk
2016-04-20 20:28   ` Olaf Hering
2016-04-27 14:31   ` Wei Liu
2016-04-20  8:03 ` [PATCH v3 2/7] libxl: style cleanups in libxl_device_pci_assignable_list() Paulina Szubarczyk
2016-04-20 20:24   ` Olaf Hering
2016-04-21  7:17     ` Paulina Szubarczyk
2016-04-20  8:04 ` [PATCH v3 3/7] xl_cmdimpl: improve return codes for cd-insert commands Paulina Szubarczyk
2016-04-20 20:30   ` Olaf Hering
2016-04-20  8:04 ` [PATCH v3 4/7] xl_cmdimpl - Add return codes for pci-detach, pci-attach, pci-asssignable-add, and pci-assignable-remove Paulina Szubarczyk
2016-04-27 14:31   ` Wei Liu
2016-04-20  8:04 ` [PATCH v3 5/7] xl: improve main_tmem_* return codes Paulina Szubarczyk
2016-04-21  9:43   ` George Dunlap
2016-04-27 14:31   ` Wei Liu
2016-04-20  8:04 ` [PATCH v3 6/7] libxl: Fix libxl_set_memory_target return value Paulina Szubarczyk
2016-04-20 20:56   ` Olaf Hering [this message]
2016-04-27 14:29   ` Wei Liu
2016-05-09  8:21     ` Paulina Szubarczyk
2016-05-09  9:48       ` George Dunlap
2016-05-09 11:15       ` Wei Liu
2016-04-20  8:04 ` [PATCH v3 7/7] libxl: libxl_tmem functions improving coding style Paulina Szubarczyk
2016-04-20 21:04   ` Olaf Hering
2016-04-27 14:31     ` Wei Liu
2016-04-27 16:53       ` Dario Faggioli
2016-04-27 16:59         ` Wei Liu
2016-04-27 14:33 ` [PATCH v3 00/10] xl: improve coding style and return more failure on Wei Liu

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