linux-kernel - [PATCH V2] lightnvm: pblk fix for 4.13

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Message-Id: <1501247596-23999-1-git-send-email-javier@javigon.com>
Date:   Fri, 28 Jul 2017 15:13:15 +0200
From:   "Javier González" <jg@...htnvm.io>
To:     mb@...htnvm.io, axboe@...com
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        Javier González <javier@...igon.com>
Subject: [PATCH V2] lightnvm: pblk fix for 4.13

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?

Changes since V1:
 - Make advanced_bio a bool to improve readability, as suggested by Jens

Thanks,
Javier

Javier González (1):
  lightnvm: pblk: advance bio according to lba index

 drivers/lightnvm/pblk-rb.c   |  4 ++--
 rivers/lightnvm/pblk-read.c | 23 ++++++++++++++++-------
 drivers/lightnvm/pblk.h      |  2 +-
 3 files changed, 19 insertions(+), 10 deletions(-)

-- 
2.7.4