Unable to mount root when using 'quiet'

[Pierre Ossman <drzeus-list@xxxxxxxxx>]

I've encountered a really strange bug that appeared in 2.6.9-rc3 (I 
previously had 2.6.9-rc2). I'm running FC2.

When booting the machine with the kernel parameter 'quiet' the kernel is 
unable to mount the root XFS partition. It just gives error 19, says 
something about trying to kill init, then panics.

Since 'quiet' is used I do not get any decent output. Removing the 
parameter makes the problem go away.

Without debug output I don't really know how to determine what's wrong. 
Perhaps someone who knows what has been changed recently can have some 
ideas?

Rgds
Pierre Ossman

PS. I'm not subscribed so please cc me.