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SubjectRe: Commit 7eaceaccab5f40 causing boot hang.
On 2011-03-29 08:19, Rob Landley wrote:
> Using the attached config (run through oldconfig and holding down
> enter), 2.6.38 boots but current -git hangs. I've bisected it to this
> commit:
>
> 7eaceaccab5f40bbfda044629a6298616aeaed50 is the first bad commit
> commit 7eaceaccab5f40bbfda044629a6298616aeaed50
> Author: Jens Axboe <jaxboe@fusionio.com>
> Date: Thu Mar 10 08:52:07 2011 +0100
>
> block: remove per-queue plugging
>
> Code has been converted over to the new explicit on-stack plugging,
> and delay users have been converted to use the new API for that.
> So lets kill off the old plugging along with aops->sync_page().
>
> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
>
> I suspect it broke CONFIG_IDE_GD_ATA. (The symptoms change a bit in
> later versions, when that was first introduced it hung right after
> discovering hda, now it makes it to freeing kernel memory and then hangs
> trying to launch init. But "the disk hangs a lot" still seems to
> describe the problem.)

That is the case even with 9ced0b95b3993660e7990cf6bf68c1a80f31544e,
which was otherwise supposed to fix this queue stall?

--
Jens Axboe



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