linux-ext4 - Re: [PATCH v2] ext4: Fix a BUG in mb_mark

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Date:	Thu, 03 Mar 2011 23:33:35 +0800
From:	Tao Ma <tm@....ma>
To:	Christoph Hellwig <hch@...radead.org>, linux-ext4@...r.kernel.org
Subject: Re: [PATCH v2] ext4: Fix a BUG in mb_mark_used during trim.

Hi Christoph,
On 03/03/2011 10:11 PM, Christoph Hellwig wrote:
> On Thu, Mar 03, 2011 at 09:59:34PM +0800, Tao Ma wrote:
>> From: Tao Ma<boyu.mt@...bao.com>
>>
>> In a bs=4096 volume, if we call FITRIM with the following parameter as
>> fstrim_range(start = 102400, len = 134144000, minlen = 10240),
> Can you add a xfstests regression test for this particular invocation?
> We already have Lukas' fstrim.c tester in the tree, so it could be a
> simple wrapper around it.
Actually these numbers are related to the block size of a ext4 volume.
To be more specific, with the above number, we have
first_block + block_len > EXT4_BLOCKS_PER_GROUP while
block_len < EXT4_BLOCKS_PER_GROUP.
So do you think it is generic enough for a test case in xfstests since 
now this
tool kit is also used to test xfs and btrfs?

Regards,
Tao




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