lightnvm: unlock rq and free ppa_list on submission fail

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>

diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index f4bc98687d7f1acd716c78dc95fa29c114194108..748cab499580914f57f56f405abb13d3415438c1 100644 (file)
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -845,6 +845,12 @@ static int rrpc_submit_io(struct rrpc *rrpc, struct bio *bio,
        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;
        }