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Date: Tue, 27 Mar 2007 17:25:06 +0100 (BST)
From: Hugh Dickins <hugh@veritas.com>
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To: James Bottomley <James.Bottomley@SteelEye.com>
cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: CONFIG_SCSI_WAIT_SCAN=m
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I'm not using an initrd, most of my kernel is builtin,
just a few modules for occasional filesystems.

CONFIG_MODULES=y
CONFIG_SCSI=y
CONFIG_SCSI_SCAN_ASYNC=y
CONFIG_SCSI_WAIT_SCAN=m

2.6.21-rc5-mm2 VFS panics unable to find my root on /dev/sda2,
but boots okay if I change drivers/scsi/Kconfig to "default y"
instead of "default m" for SCSI_WAIT_SCAN.

I'm sure that's not the right fix, but I don't know what is.

I've had no trouble with SCSI_SCAN_ASYNC=y until now: I could
turn it off, but others may have trouble with the same regression.

Hugh