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async_pq_val: fix DMA memory leak

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Add missing dmaengine_unmap_put(), so we don't OOM during RAID6 sync.

Fixes: 1786b943da ("async_pq_val: convert to dmaengine_unmap_data")
Signed-off-by: Justin Maggard <jmaggard@netgear.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Justin Maggard 2016-10-04 13:17:58 -07:00 committed by Vinod Koul
parent 96622bde4c
commit c84750906b
1 changed files with 4 additions and 4 deletions
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8
crypto/async_tx/async_pq.c
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@ -368,8 +368,6 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks,
dma_set_unmap(tx, unmap);
async_tx_submit(chan, tx, submit);
return tx;
} else {
struct page *p_src = P(blocks, disks);
struct page *q_src = Q(blocks, disks);
@ -424,9 +422,11 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks,
submit->cb_param = cb_param_orig;
submit->flags = flags_orig;
async_tx_sync_epilog(submit);
return NULL;
tx = NULL;
}
dmaengine_unmap_put(unmap);
return tx;
}
EXPORT_SYMBOL_GPL(async_syndrome_val);