Patch "[PATCH 030/135] lightnvm: unlock rq and free ppa_list on submission" has been added to the 4.4-stable tree

Patch "[PATCH 030/135] lightnvm: unlock rq and free ppa_list on submission" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    [PATCH 030/135] lightnvm: unlock rq and free ppa_list on submission

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     0030-lightnvm-unlock-rq-and-free-ppa_list-on-submission-f.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 479a951226470515dcfd473205d1c5ee18e79c01 Mon Sep 17 00:00:00 2001
From: Wenwei Tao <ww.tao0320@gmail.com>
Date: Tue, 12 Jan 2016 07:49:18 +0100
Subject: [PATCH 030/135] lightnvm: unlock rq and free ppa_list on submission
 fail
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

[ Upstream commit c27278bddd75a3ee755c8e83c6bcc3fdd7271ef6 ]

When rrpc_write_ppalist_rq and rrpc_read_ppalist_rq succeed, we setup
rq correctly, but nvm_submit_io may afterward fail since it cannot
allocate request or nvme_nvm_command, we return error but forget to
cleanup the previous work.

Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/lightnvm/rrpc.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -845,6 +845,12 @@ static int rrpc_submit_io(struct rrpc *r
 	if (err) {
 		pr_err("rrpc: I/O submission failed: %d\n", err);
 		bio_put(bio);
+		if (!(flags & NVM_IOTYPE_GC)) {
+			rrpc_unlock_rq(rrpc, rqd);
+			if (rqd->nr_pages > 1)
+				nvm_dev_dma_free(rrpc->dev,
+			rqd->ppa_list, rqd->dma_ppa_list);
+		}
 		return NVM_IO_ERR;
 	}
 


Patches currently in stable-queue which might be from ww.tao0320@gmail.com are

queue-4.4/0030-lightnvm-unlock-rq-and-free-ppa_list-on-submission-f.patch
queue-4.4/0033-NVMe-fix-build-with-CONFIG_NVM-enabled.patch
queue-4.4/0031-lightnvm-fix-locking-and-mempool-in-rrpc_lun_gc.patch
queue-4.4/0027-lightnvm-fix-bio-submission-issue.patch