Re: [PATCH] bio: ensure __bio_clone_fast copies bi_partno

Jens Axboe
2017-11-17T15:27:40Z

On 11/17/2017 12:47 AM, Michael Lyle wrote:
> A new field was introduced in 74d46992e0d9dee7f1f376de0d56d31614c8a17a,
> bi_partno, instead of using bdev->bd_contains and encoding the partition
> information in the bi_bdev field. __bio_clone_fast was changed to copy
> the disk information, but not the partition information. At minimum,
> this regressed bcache and caused data corruption.

That's not good... Fix looks good to me, I'll queue this up for a pull
today. Thanks for bisecting this, Michael.

--
Jens Axboe