nvme-fc: use blk_rq_nr_phys_segments

Without this deallocate won't work properly due to the mismatch
of the bio/request size and the actual payload size.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>

diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index fcc9dcfdf67517d1352bef388a50d2dbf6c9a129..e65041c640cbc5bad3c284b77690605f071edfc3 100644 (file)
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -1663,13 +1663,13 @@ nvme_fc_map_data(struct nvme_fc_ctrl *ctrl, struct request *rq,
                return 0;
 
        freq->sg_table.sgl = freq->first_sgl;
-       ret = sg_alloc_table_chained(&freq->sg_table, rq->nr_phys_segments,
-                       freq->sg_table.sgl);
+       ret = sg_alloc_table_chained(&freq->sg_table,
+                       blk_rq_nr_phys_segments(rq), freq->sg_table.sgl);
        if (ret)
                return -ENOMEM;
 
        op->nents = blk_rq_map_sg(rq->q, rq, freq->sg_table.sgl);
-       WARN_ON(op->nents > rq->nr_phys_segments);
+       WARN_ON(op->nents > blk_rq_nr_phys_segments(rq));
        dir = (rq_data_dir(rq) == WRITE) ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
        freq->sg_cnt = fc_dma_map_sg(ctrl->lport->dev, freq->sg_table.sgl,
                                op->nents, dir);