linux-kernel - Re: [PATCH v3 4/4] block/badblocks: fix the bug of reverse order

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Message-ID: <907bbe2d-9cbf-480c-be57-3289d113c42a@huaweicloud.com>
Date:   Sun, 25 Jun 2023 17:22:08 +0800
From:   Li Nan <linan666@...weicloud.com>
To:     Ashok Raj <ashok_raj@...ux.intel.com>, linan666@...weicloud.com
Cc:     axboe@...nel.dk, dan.j.williams@...el.com,
        vishal.l.verma@...el.com, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, yukuai3@...wei.com,
        yi.zhang@...wei.com, houtao1@...wei.com, yangerkun@...wei.com,
        Ashok Raj <ashok.raj@...el.com>, linan122@...wei.com
Subject: Re: [PATCH v3 4/4] block/badblocks: fix the bug of reverse order



在 2023/6/21 22:15, Ashok Raj 写道:
> On Thu, Jun 22, 2023 at 01:20:52AM +0800, linan666@...weicloud.com wrote:
>> From: Li Nan <linan122@...wei.com>
>>
>> Order of badblocks will be reversed if we set a large area at once. 'hi'
>> remains unchanged while adding continuous badblocks is wrong, the next
>> setting is greater than 'hi', it should be added to the next position.
>> Let 'hi' +1 each cycle.
> 
> The commitlog needs more work.

OK, I will improve this.

>>
>>    # echo 0 2048 > bad_blocks
>>    # cat bad_blocks
>>      1536 512
>>      1024 512
>>      512 512
>>      0 512
> 
> Is the above before or after this patch is applied?

All badblocks are arranged from small to large. after patch:

# cat bad_blocks
   0 512
   512 512
   1024 512
   1536 512

I will show it in next version. Thanks for your suggestion.

> 
>>
>> Fixes: 9e0e252a048b ("badblocks: Add core badblock management code")
>> Signed-off-by: Li Nan <linan122@...wei.com>
>> ---
>>   block/badblocks.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/block/badblocks.c b/block/badblocks.c
>> index 2c2ef8284a3f..3b816690b940 100644
>> --- a/block/badblocks.c
>> +++ b/block/badblocks.c
>> @@ -301,6 +301,7 @@ int badblocks_set(struct badblocks *bb, sector_t s, int sectors,
>>   			p[hi] = BB_MAKE(s, this_sectors, acknowledged);
>>   			sectors -= this_sectors;
>>   			s += this_sectors;
>> +			hi++;
>>   			changed = true;
>>   		}
>>   	}
>> -- 
>> 2.39.2
>>
> 
> .

-- 
Thanks,
Nan