On 28 Jul 2017, at 16.06, Jens Axboe [off-list ref] wrote:

On 07/28/2017 07:13 AM, Javier González wrote:

quoted

Hi Jens,

Can you pick up this fix for 4.13? It is a fix to a read corruption in
pblk that has been there form the beginning. It is due to a bad bio
manipulation in the case that an I/O containing lbas that are invalid,
point to data in the host cache and point to data on the device, all
three in a single bio.

The patch applies on top of you for-4.13/block and is available too at:
 - https://github.com/OpenChannelSSD/linux/tree/pblk.for-4.13

I marked the patch to fix the original pblk commit, but it does not
apply anymore on the original 4.12 code. How do we handle these
situations? We make a backport when Greg makes 4.12 stable?

Greg will email you if it doesn't apply, then you can reply back
with a version that does apply against 4.12.

Makes sense. Thanks for explaining :)

Javier