linux-kernel - RE: Drivers: scsi: FLUSH timeout

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Message-ID: <ff6a93ed5d234c14874d03415812a3ec@SN2PR03MB061.namprd03.prod.outlook.com>
Date:	Wed, 2 Oct 2013 18:29:00 +0000
From:	KY Srinivasan <kys@...rosoft.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
CC:	Mike Christie <michaelc@...wisc.edu>,
	Jack Wang <xjtuwjp@...il.com>,
	Greg KH <gregkh@...uxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"ohering@...e.com" <ohering@...e.com>,
	"jbottomley@...allels.com" <jbottomley@...allels.com>,
	"hch@...radead.org" <hch@...radead.org>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>
Subject: RE: Drivers: scsi: FLUSH timeout



> -----Original Message-----
> From: geert.uytterhoeven@...il.com [mailto:geert.uytterhoeven@...il.com]
> On Behalf Of Geert Uytterhoeven
> Sent: Wednesday, September 25, 2013 1:40 AM
> To: KY Srinivasan
> Cc: Mike Christie; Jack Wang; Greg KH; linux-kernel@...r.kernel.org;
> devel@...uxdriverproject.org; ohering@...e.com; jbottomley@...allels.com;
> hch@...radead.org; linux-scsi@...r.kernel.org
> Subject: Re: Drivers: scsi: FLUSH timeout
> 
> On Tue, Sep 24, 2013 at 11:53 PM, KY Srinivasan <kys@...rosoft.com> wrote:
> > I am not sure how that magic number was arrived at (the 60HZ number). We
> want this to be little higher -
> 
> "60 * HZ" means "60 seconds".
> 
> > would there be any issues raising this to say  180 seconds. This is the value we
> currently have for I/O
> > timeout.
> 
> So you want to replace it by "180 * HZ", which is ... another magic number?

Ideally, I want this to be adjustable like the way we can change the I/O timeout.
Since that has been attempted earlier and rejected (not clear what the reasons were),
I was suggesting that we pick a larger number. James, let me know how I should proceed here.

Regards,

K. Y
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds