From: "=?UTF-8?q?Javier=20Gonz=C3=A1lez?=" <jg@lightnvm.io>
To: mb@lightnvm.io, axboe@fb.com
Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
        =?UTF-8?q?Javier=20Gonz=C3=A1lez?= <javier@javigon.com>
Subject: [PATCH V2] lightnvm: pblk fix for 4.13
Date: Fri, 28 Jul 2017 15:13:15 +0200
Message-Id: <1501247596-23999-1-git-send-email-javier@javigon.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1026
Lines: 32

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