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From: Hannes Reinecke <hare@suse.de>
To: Bart Van Assche <bvanassche@acm.org>
Cc: James Bottomley <jbottomley@parallels.com>,
	linux-scsi@vger.kernel.org, Joern Engel <joern@logfs.org>,
	Ewan Milne <emilne@redhat.com>,
	James Smart <james.smart@emulex.com>,
	Ren Mingxin <renmx@cn.fujitsu.com>,
	Roland Dreier <roland@purestorage.com>,
	Bryn Reeves <bmr@redhat.com>,
	Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH 7/7] scsi: Add 'eh_deadline' to limit SCSI EH runtime
Date: Fri, 28 Jun 2013 09:42:47 +0200	[thread overview]
Message-ID: <51CD3E77.60100@suse.de> (raw)
In-Reply-To: <51CD3B62.9010609@acm.org>

On 06/28/2013 09:29 AM, Bart Van Assche wrote:
> On 06/10/13 13:11, Hannes Reinecke wrote:
>> +static int sdev_eh_deadline(struct Scsi_Host *shost,
>> +               unsigned long eh_start)
>> +{
>> +    if (!shost->eh_deadline)
>> +        return 0;
>> +
>> +    if (shost->last_reset != 0 &&
>> +        time_before(shost->last_reset, eh_start))
>> +        eh_start = shost->last_reset;
>> +
>> +    if (time_before(jiffies,
>> +            eh_start + shost->eh_deadline))
>> +        return 0;
>> +
>> +    return 1;
>> +}
>> +
>> +static int scsi_host_eh_deadline(struct Scsi_Host *shost)
>> +{
>> +    if (!shost->last_reset)
>> +        return 0;
>> +
>> +    return sdev_eh_deadline(shost, shost->last_reset);
>> +}
> 
> Hello Hannes,
> 
> I would appreciate if you would choose other names for these two
> functions and also for shost->eh_deadline. To me a deadline is a
> time instant. As far as I can see the two functions above check
> whether a deadline has been passed, and shost->eh_deadline is a time
> interval. How about the following names: sdev_eh_past_deadline(),
> shost_eh_past_deadline() and shost->max_eh_jiffies ?
> 
Sure. I changed the naming once already, so I don't have any issues
with that.
And yes, the suggested naming does make more sense.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare@suse.de			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
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  reply	other threads:[~2013-06-28  7:42 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-10 11:11 [PATCH 0/7] Limit overall SCSI EH runtime Hannes Reinecke
2013-06-10 11:11 ` [PATCH 1/7] dpt_i2o: Remove DPTI_STATE_IOCTL Hannes Reinecke
2013-06-10 11:11 ` [PATCH 2/7] dpt_i2o: return SCSI_MLQUEUE_HOST_BUSY when in reset Hannes Reinecke
2013-06-10 11:11 ` [PATCH 3/7] advansys: Remove 'last_reset' references Hannes Reinecke
2013-06-10 11:11 ` [PATCH 4/7] tmscsim: Move 'last_reset' into host structure Hannes Reinecke
2013-06-10 11:11 ` [PATCH 5/7] dc395: Move 'last_reset' into internal " Hannes Reinecke
2013-06-10 11:11 ` [PATCH 6/7] scsi: remove check for 'resetting' Hannes Reinecke
2013-06-10 11:11 ` [PATCH 7/7] scsi: Add 'eh_deadline' to limit SCSI EH runtime Hannes Reinecke
2013-06-27 14:33   ` Ewan Milne
2013-06-28  7:14     ` Hannes Reinecke
2013-06-28 12:54       ` Ewan Milne
2013-06-28  7:29   ` Bart Van Assche
2013-06-28  7:42     ` Hannes Reinecke [this message]
2013-06-27  9:23 ` [PATCH 0/7] Limit overall " Ren Mingxin
  -- strict thread matches above, loose matches on Subject: below --
2013-07-01  6:50 [PATCHv2 " Hannes Reinecke
2013-07-01  6:50 ` [PATCH 7/7] scsi: Add 'eh_deadline' to limit " Hannes Reinecke
2013-09-20  7:48   ` Ren Mingxin
2013-10-16 19:22   ` James Bottomley
2013-10-17 14:27     ` Ewan Milne
2013-10-23  9:25     ` Hannes Reinecke
2013-10-23  7:46       ` James Bottomley
2013-10-23  9:49         ` Hannes Reinecke

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