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Subject[PATCH 4.9 19/22] ntb: ntb_perf missing dmaengine_unmap_put
Date
4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dave Jiang <dave.jiang@intel.com>

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@intel.com>
Fixes: 8a7b6a77 ("ntb: ntb perf tool")
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
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);


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