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From: dinghao.liu@zju.edu.cn
To: "Bean Huo (beanhuo)" <beanhuo@micron.com>
Cc: "kjlu@umn.edu" <kjlu@umn.edu>,
	"Alim Akhtar" <alim.akhtar@samsung.com>,
	"Avri Altman" <avri.altman@wdc.com>,
	"James E.J. Bottomley" <jejb@linux.ibm.com>,
	"Martin K. Petersen" <martin.petersen@oracle.com>,
	"Bart Van Assche" <bvanassche@acm.org>,
	"Can Guo" <cang@codeaurora.org>,
	"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: RE: RE: [EXT] [PATCH] scsi: ufs-bsg: Fix runtime PM imbalance on error
Date: Sat, 23 May 2020 18:10:25 +0800 (GMT+08:00)
Message-ID: <2ca4e9a1.c1e27.1724103291c.Coremail.dinghao.liu@zju.edu.cn> (raw)
In-Reply-To: <SN6PR08MB5693D06B4B30D0A76824D2BBDBB40@SN6PR08MB5693.namprd08.prod.outlook.com>

> Hi, Dinghao
> 
> > Thank you for your advice! Moving original pm_runtime_put_sync() to after
> > "out" label will influence an error path branched from
> > ups_bsg_verify_query_size(). So I think changing "goto out" to "break" is a good
> > idea. But in this case we may execute an extra
> > sg_copy_from_buffer() and an extra kfree() compared with unpatched version.
> > Does this matter?
> > 
> What do you mean " unpatched version "? 
>
> I see, below goto will bypass sg_copy_from_buffer() and an extra kfree()
> In case ufs_bsg_alloc_desc_buffer() fails. 
> 

That's exactly what I want to express. If using "break" is OK I will send
a new patch to fix this problem.

> Bean
> 

Regaeds,
Dinghao

      reply index

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-22  4:59 Dinghao Liu
2020-05-22  8:36 ` [EXT] " Bean Huo (beanhuo)
2020-05-22  8:54   ` dinghao.liu
2020-05-22 14:55     ` Bean Huo (beanhuo)
2020-05-23 10:10       ` dinghao.liu [this message]

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