linux-kernel - Re: todays git regression (2.6.32-04008.g3ff6a46): lot of device mapper warnings

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Date:	Fri, 11 Dec 2009 17:51:56 -0800 (PST)
From:	Christian Kujau <lists@...dbynature.de>
To:	Jens Axboe <jens.axboe@...cle.com>
cc:	Heinz Diehl <htd@...cy-poultry.org>,
	LKML <linux-kernel@...r.kernel.org>, martin.petersen@...cle.com
Subject: Re: todays git regression (2.6.32-04008.g3ff6a46): lot of device
 mapper warnings

On Wed, 9 Dec 2009 at 23:07, Jens Axboe wrote:
> Does this work?

Although not using LVM, these messages were popping up here too. Your 
patch made these go away with no ill effects so far.
Dmesg and .config: http://nerdbynature.de/bits/2.6.33-git/dm/

Thanks,
Christian.

> 
> diff --git a/block/blk-settings.c b/block/blk-settings.c
> index dd1f1e0..0116d29 100644
> --- a/block/blk-settings.c
> +++ b/block/blk-settings.c
> @@ -554,11 +554,13 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
>  		ret = -1;
>  	}
>  
> +#if 0
>  	if (offset &&
>  	    (offset & (b->discard_granularity - 1)) != b->discard_alignment) {
>  		t->discard_misaligned = 1;
>  		ret = -1;
>  	}
> +#endif
>  
>  	/* If top has no alignment offset, inherit from bottom */
>  	if (!t->alignment_offset)

-- 
BOFH excuse #254:

Interference from lunar radiation
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