linux-kernel - Re: swsusp regression [Was: 2.6.18-rc3-mm2]

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Date:	Tue, 8 Aug 2006 19:53:43 +0200
From:	Jens Axboe <axboe@...e.de>
To:	Jiri Slaby <jirislaby@...il.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, Jason Lunz <lunz@...ennom.net>,
	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	andre@...ux-ide.org, pavel@...e.cz, linux-pm@...l.org,
	linux-ide@...r.kernel.org
Subject: Re: swsusp regression [Was: 2.6.18-rc3-mm2]

On Tue, Aug 08 2006, Jiri Slaby wrote:
> Jens Axboe wrote:
> >On Tue, Aug 08 2006, Rafael J. Wysocki wrote:
> >>On Tuesday 08 August 2006 13:19, Jens Axboe wrote:
> >>>On Tue, Aug 08 2006, Rafael J. Wysocki wrote:
> >>>>On Tuesday 08 August 2006 13:07, Jens Axboe wrote:
> >>>>>On Tue, Aug 08 2006, Jens Axboe wrote:
> >>>>>>>Indeed, that looks broken now. That must be what is screwing it up. 
> >>>>>>>With
> >>>>>>the former patch applied, did cdrom detection still look funny to you?
> >>>>Hm, I'm not sure what you mean ...
> >>>-hdc: ATAPI 63X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache, UDMA(33)
> >>>+hdc: ATAPI CD-ROM drive, 0kB Cache, UDMA(33)
> >>Ah, that.
> >>
> >>>But perhaps that wasn't you?
> >>No, that wasn't me. :-)
> 
> It was me and it's OK.
> 
> >>>>>>I'll concoct a fix for that breakage.
> >>>>>Something like this.
> >>>>Looks good, I'll give it a try.
> >>>Thanks!
> >>It fixes this particular issue for me, but your first patch (appended)
> >>is also needed to prevent the box from hanging later during the resume
> >>(when it tries to save the image).
> >
> >Yes certainly, that's a separate bug, sorry if I didn't make that clear.
> >Both fixes are in the block repo now, so next -mm should work fine
> >again.
> 
> And even this is OK.

Good.

> I'm just curious, what
> @@ -387,3 +398,5 @@
>  EXT3 FS on md0, internal journal
>  EXT3-fs: mounted filesystem with ordered data mode.
>  Adding 506036k swap on /dev/hda3.  Priority:-1 extents:1 across:506036k
> +JBD: barrier-based sync failed on hda2 - disabling barriers
> +JBD: barrier-based sync failed on md0 - disabling barriers

I think that -mm also added barriers on by default for ext3, so I don't
think it's anything to worry about.

-- 
Jens Axboe

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