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Subject: Re: [PATCH 2/2] scsi: ufs: Return a bsg request immediatley if
 eh-in-progress
To:     Avri Altman <Avri.Altman@wdc.com>,
        "James E . J . Bottomley" <jejb@linux.vnet.ibm.com>,
        "Martin K . Petersen" <martin.petersen@oracle.com>
Cc:     "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Adrian Hunter <adrian.hunter@intel.com>
References: <20211108120804.10405-1-avri.altman@wdc.com>
 <20211108120804.10405-3-avri.altman@wdc.com>
 <fa7dae1f-06ac-9d5a-616d-cc00c38e5feb@acm.org>
 <DM6PR04MB6575F4831649503EE848C4CFFC919@DM6PR04MB6575.namprd04.prod.outlook.com>
From:   Bart Van Assche <bvanassche@acm.org>
Message-ID: <06c95606-ac89-5750-224f-04c72b5cc111@acm.org>
Date:   Mon, 8 Nov 2021 09:32:07 -0800
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On 11/8/21 9:24 AM, Avri Altman wrote:
> I am not sure. I would expect a retry / polling / other, if any, to
> be done in user-space and not in the kernel. e.g. a common practice
> in the code that send SG_IO or other ioctls is to retry on EBUSY. Not
> sure that this is the case in ufs-utils though.
Shouldn't we aim to make sure that user space code does not have to use 
busy waiting?

Thanks,

Bart.