linux-kernel - Re: [dm-devel] [PATCH v2 1/3] block: add sysfs entry for discard

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Date:	Tue, 03 Jul 2012 13:51:13 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Vivek Goyal <vgoyal@...hat.com>
CC:	linux-kernel@...r.kernel.org, axboe@...nel.dk, snitzer@...hat.com,
	martin.petersen@...cle.com, david@...morbit.com, xfs@....sgi.com,
	dm-devel@...hat.com, hch@....de
Subject: Re: [dm-devel] [PATCH v2 1/3] block: add sysfs entry for discard_alignment

Il 03/07/2012 04:34, Vivek Goyal ha scritto:
>> > The next patches will actually use the alignment, expose it in sysfs
>> > for ease of debugging.
>> > 
> Don't we already have discard_alignment exported as device attribute.
> 
> /sys/block/<dev>/discard_alignment

Ah, interesting, I missed it completely.  I guess it's because queue/
directories only exist for full disks, and the correct alignment varies
for each partition.  So this patch is unnecessary.

Paolo
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