This is a note to let you know that I've just added the patch titled
ntb: ntb_perf missing dmaengine_unmap_put
to the 4.9-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:
ntb-ntb_perf-missing-dmaengine_unmap_put.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9644347c5240d0ee3ba7472ef332aaa4ff4db398 Mon Sep 17 00:00:00 2001
From: Dave Jiang <dave.jiang@xxxxxxxxx>
Date: Mon, 30 Jan 2017 14:21:17 -0700
Subject: ntb: ntb_perf missing dmaengine_unmap_put
From: Dave Jiang <dave.jiang@xxxxxxxxx>
commit 9644347c5240d0ee3ba7472ef332aaa4ff4db398 upstream.
In the normal I/O execution path, ntb_perf is missing a call to
dmaengine_unmap_put() after submission. That causes us to leak
unmap objects.
Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx>
Fixes: 8a7b6a77 ("ntb: ntb perf tool")
Signed-off-by: Jon Mason <jdmason@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/ntb/test/ntb_perf.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/ntb/test/ntb_perf.c
+++ b/drivers/ntb/test/ntb_perf.c
@@ -265,6 +265,8 @@ static ssize_t perf_copy(struct pthr_ctx
if (dma_submit_error(cookie))
goto err_set_unmap;
+ dmaengine_unmap_put(unmap);
+
atomic_inc(&pctx->dma_sync);
dma_async_issue_pending(chan);
Patches currently in stable-queue which might be from dave.jiang@xxxxxxxxx are
queue-4.9/ntb-ntb_perf-missing-dmaengine_unmap_put.patch