Re: [PATCH] bio: ensure __bio_clone_fast copies bi_partno
From: Jens Axboe <axboe@kernel.dk>
Date: 2017-11-17 15:27:40
Also in:
linux-bcache, stable
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