linux-kernel - Re: Commit 7eaceaccab5f40 causing boot hang.

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Message-ID: <4D91E9DA.4050504@fusionio.com>
Date:	Tue, 29 Mar 2011 16:16:58 +0200
From:	Jens Axboe <jaxboe@...ionio.com>
To:	Rob Landley <rlandley@...allels.com>
CC:	linux-kernel <linux-kernel@...r.kernel.org>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>
Subject: Re: Commit 7eaceaccab5f40 causing boot hang.

On 2011-03-29 16:13, Rob Landley wrote:
> On 03/29/2011 08:59 AM, Jens Axboe wrote:
>> On 2011-03-29 10:52, Rob Landley wrote:
>>> I'm booting all this under kvm or qemu, by the way:
>>>
>>> qemu-system-x86_64 -m 1024 -kernel arch/x86/boot/bzImage \
>>>   -hda ~/sid.ext3 -append "root=/dev/hda rw"
>>>
>>> Sometimes with init=/bin/bash in that last quoted bit.  The root
>>> filesystem's debian sid but that's probably not relevant because it
>>> worked fine with .38.
>>
>> Does this help?
>>
>> diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
>> index 0e406d73..ca27d30 100644
>> --- a/drivers/ide/ide-io.c
>> +++ b/drivers/ide/ide-io.c
>> @@ -570,8 +570,7 @@ void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq)
>>  	spin_unlock_irqrestore(q->queue_lock, flags);
>>  
>>  	/* Use 3ms as that was the old plug delay */
>> -	if (rq)
>> -		blk_delay_queue(q, 3);
>> +	blk_delay_queue(q, 3);
>>  }
>>  
>>  static int drive_is_ready(ide_drive_t *drive)
>>
> 
> Nope, still hung the same way.

Funky. I'll try and reproduce this tonight.

-- 
Jens Axboe

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