linux-kernel - Re: [PATCH] Allow populate_rootfs() to be called early

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Date:	Thu, 21 Feb 2008 22:27:09 +0100
From:	Éric Piel <Eric.Piel@...mplin-utc.net>
To:	Christoph Hellwig <hch@....de>
Cc:	Sergey Vlasov <vsu@...linux.ru>, dsdt@...gusch.at,
	len.brown@...el.com, linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...l.org>, trenn@...e.de
Subject: Re: [PATCH] Allow populate_rootfs() to be called early

21/02/08 20:04, Christoph Hellwig wrote/a écrit:
> On Thu, Feb 21, 2008 at 08:02:36PM +0100, Eric Piel wrote:
>> It's been a week and no one has screamed, so I guess the idea looks fine
>> to everyone :-) 
>>
>> Here is a boot tested patch for integration. In addition to the previous
>> version, it removes also rootfs_initcall(), and uses fs_initcall_sync().
>> There should be absolutely no difference in behaviour as there was no
>> user of fs_initcall_sync() in the kernel.
>>
>> I'm not sure what should be the best tree to go through. Maybe the ACPI
>> tree, as all this is needed for CONFIG_ACPI_CUSTOM_DSDT_INITRD...
> 
> Actually I've just got a report today where we get an uninitialized
> spinlock due to this in -mm.  It's probably possible to work around it,
> though.
What do you mean by "due to this"? Due to userspace helper being called
too early? Then this patch should fix the bug.

Eric
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