linux-kernel - Re: 2.6.25-rc8-mm2: CONFIG_ATA_SFF: panic involving mount_block

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Date:	Sat, 12 Apr 2008 09:52:48 +0300
From:	Adrian Bunk <bunk@...nel.org>
To:	Alexey Dobriyan <adobriyan@...il.com>,
	Tejun Heo <htejun@...il.com>, Jeff Garzik <jgarzik@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: 2.6.25-rc8-mm2: CONFIG_ATA_SFF: panic involving
	mount_block_root and down the road

On Sat, Apr 12, 2008 at 04:59:17AM +0400, Alexey Dobriyan wrote:
> On Sat, Apr 12, 2008 at 03:43:45AM +0400, Alexey Dobriyan wrote:
> > Pekka fixed SLUB for me, and now core2 box survives up and including to
> > not finding / :
> > 
> > Setup is SATA disk with plain old partitions, nothing lvmancy:
> > 
> > 	/dev/sda2 on / type ext3 (rw,noatime)
> > 
> > CONFIG_ATA=y
> > CONFIG_ATA_ACPI=y
> > CONFIG_SATA_AHCI=y
> > CONFIG_ATA_PIIX=y
> > CONFIG_PATA_JMICRON=y
> > 
> > sda1 is for swap.
> > 
> > 
> > [    3.920000] NET: Registered protocol family 1
> > [    3.920000] VFS: Cannot open root device "sda2" or unknown-block(0,0)
> 
> The winner is partly me, partly git-libata-all.
> 
> The latter introduced CONFIG_ATA_SFF option and put more or less every
> SATA and PATA driver under it. The former honestly answered N to when
> ATA_SFF popped up and failed to check existence of ATA_PIIX and
> PATA_JMICRON in failing .config .
> 
> Now raise hands those who knew that your ATA controller is SFF
> compliant.

Is there any technical reason why we have to bother users with the 
ATA_SFF option at all?

It sounds like a perfect canndidate for being select'ed.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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