On 12/09/2015 02:26 PM, Wenwei Tao wrote:
put bio when submission fails, since we get it before submission. And return error when backend device driver doesn't provide a submit_io method, thus we can end IO properly.Signed-off-by: Wenwei Tao <ww.tao0...@gmail.com> --- drivers/lightnvm/gennvm.c | 2 +- drivers/lightnvm/rrpc.c | 4 +++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/lightnvm/gennvm.c b/drivers/lightnvm/gennvm.c index 35dde84..c8e53c5 100644 --- a/drivers/lightnvm/gennvm.c +++ b/drivers/lightnvm/gennvm.c @@ -343,7 +343,7 @@ static void gennvm_generic_to_addr_mode(struct nvm_dev *dev, struct nvm_rq *rqd) static int gennvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd) { if (!dev->ops->submit_io) - return 0; + return -ENODEV; /* Convert address space */ gennvm_generic_to_addr_mode(dev, rqd); diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c index 75e59c3..77b066f 100644 --- a/drivers/lightnvm/rrpc.c +++ b/drivers/lightnvm/rrpc.c @@ -636,11 +636,12 @@ static int rrpc_end_io(struct nvm_rq *rqd, int error) if (bio_data_dir(rqd->bio) == WRITE) rrpc_end_io_write(rrpc, rrqd, laddr, npages); + bio_put(rqd->bio); + if (rrqd->flags & NVM_IOTYPE_GC) return 0; rrpc_unlock_rq(rrpc, rqd); - bio_put(rqd->bio); if (npages > 1) nvm_dev_dma_free(rrpc->dev, rqd->ppa_list, rqd->dma_ppa_list); @@ -827,6 +828,7 @@ static int rrpc_submit_io(struct rrpc *rrpc, struct bio *bio, err = nvm_submit_io(rrpc->dev, rqd); if (err) { pr_err("rrpc: I/O submission failed: %d\n", err); + bio_put(bio); return NVM_IO_ERR; }
Thanks Tao, applied :) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
