> On 14 Mar 2019, at 17.04, Igor Konopko <igor.j.konopko@intel.com> wrote:
> 
> This patch replaces few remaining usages of rqd->ppa_list[] with
> existing nvm_rq_to_ppa_list() helpers. This is needed for theoretical
> devices with ws_min/ws_opt equal to 1.
> 
> Signed-off-by: Igor Konopko <igor.j.konopko@intel.com>
> ---
> drivers/lightnvm/pblk-core.c     | 26 ++++++++++++++------------
> drivers/lightnvm/pblk-recovery.c | 13 ++++++++-----
> 2 files changed, 22 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
> index 6817f8f..7338a44 100644
> --- a/drivers/lightnvm/pblk-core.c
> +++ b/drivers/lightnvm/pblk-core.c
> @@ -562,11 +562,9 @@ int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd)
> 
> int pblk_submit_io_sync_sem(struct pblk *pblk, struct nvm_rq *rqd)
> {
> -	struct ppa_addr *ppa_list;
> +	struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
> 	int ret;
> 
> -	ppa_list = (rqd->nr_ppas > 1) ? rqd->ppa_list : &rqd->ppa_addr;
> -
> 	pblk_down_chunk(pblk, ppa_list[0]);
> 	ret = pblk_submit_io_sync(pblk, rqd);
> 	pblk_up_chunk(pblk, ppa_list[0]);
> @@ -727,6 +725,7 @@ static int pblk_line_smeta_read_copy(struct pblk *pblk,
> 	struct nvm_geo *geo = &dev->geo;
> 	struct pblk_line_meta *lm = &pblk->lm;
> 	struct bio *bio;
> +	struct ppa_addr *ppa_list;
> 	struct nvm_rq rqd;
> 	int i, ret;
> 
> @@ -750,6 +749,7 @@ static int pblk_line_smeta_read_copy(struct pblk *pblk,
> 	rqd.opcode = NVM_OP_PREAD;
> 	rqd.nr_ppas = lm->smeta_sec / lm->smeta_copies;
> 	rqd.is_seq = 1;
> +	ppa_list = nvm_rq_to_ppa_list(&rqd);
> 
> 	for (i = 0; i < rqd.nr_ppas; i++, paddr++) {
> 		struct ppa_addr ppa = addr_to_gen_ppa(pblk, paddr, line->id);
> @@ -761,7 +761,7 @@ static int pblk_line_smeta_read_copy(struct pblk *pblk,
> 			pos = pblk_ppa_to_pos(geo, ppa);
> 		}
> 
> -		rqd.ppa_list[i] = ppa;
> +		ppa_list[i] = ppa;
> 		pblk_get_meta(pblk, rqd.meta_list, i)->lba =
> 				  cpu_to_le64(ADDR_EMPTY);
> 	}
> @@ -812,6 +812,7 @@ static int pblk_line_smeta_write(struct pblk *pblk, struct pblk_line *line)
> 	struct nvm_geo *geo = &dev->geo;
> 	struct pblk_line_meta *lm = &pblk->lm;
> 	struct bio *bio;
> +	struct ppa_addr *ppa_list;
> 	struct nvm_rq rqd;
> 	__le64 *lba_list = emeta_to_lbas(pblk, line->emeta->buf);
> 	__le64 addr_empty = cpu_to_le64(ADDR_EMPTY);
> @@ -863,6 +864,7 @@ static int pblk_line_smeta_write(struct pblk *pblk, struct pblk_line *line)
> 	rqd.opcode = NVM_OP_PWRITE;
> 	rqd.nr_ppas = smeta_cpy_sec;
> 	rqd.is_seq = 1;
> +	ppa_list = nvm_rq_to_ppa_list(&rqd);
> 
> 	for (i = 0; i < rqd.nr_ppas; i++, paddr++) {
> 		void *meta_list = rqd.meta_list;
> @@ -875,7 +877,7 @@ static int pblk_line_smeta_write(struct pblk *pblk, struct pblk_line *line)
> 			pos = pblk_ppa_to_pos(geo, ppa);
> 		}
> 
> -		rqd.ppa_list[i] = ppa;
> +		ppa_list[i] = ppa;
> 		pblk_get_meta(pblk, meta_list, i)->lba = addr_empty;
> 		lba_list[paddr] = addr_empty;
> 	}
> @@ -911,8 +913,9 @@ int pblk_line_emeta_read(struct pblk *pblk, struct pblk_line *line,
> 	struct nvm_geo *geo = &dev->geo;
> 	struct pblk_line_mgmt *l_mg = &pblk->l_mg;
> 	struct pblk_line_meta *lm = &pblk->lm;
> -	void *ppa_list, *meta_list;
> +	void *ppa_list_buf, *meta_list;
> 	struct bio *bio;
> +	struct ppa_addr *ppa_list;
> 	struct nvm_rq rqd;
> 	u64 paddr = line->emeta_ssec;
> 	dma_addr_t dma_ppa_list, dma_meta_list;
> @@ -928,7 +931,7 @@ int pblk_line_emeta_read(struct pblk *pblk, struct pblk_line *line,
> 	if (!meta_list)
> 		return -ENOMEM;
> 
> -	ppa_list = meta_list + pblk_dma_meta_size(pblk);
> +	ppa_list_buf = meta_list + pblk_dma_meta_size(pblk);
> 	dma_ppa_list = dma_meta_list + pblk_dma_meta_size(pblk);
> 
> next_rq:
> @@ -949,11 +952,12 @@ int pblk_line_emeta_read(struct pblk *pblk, struct pblk_line *line,
> 
> 	rqd.bio = bio;
> 	rqd.meta_list = meta_list;
> -	rqd.ppa_list = ppa_list;
> +	rqd.ppa_list = ppa_list_buf;
> 	rqd.dma_meta_list = dma_meta_list;
> 	rqd.dma_ppa_list = dma_ppa_list;
> 	rqd.opcode = NVM_OP_PREAD;
> 	rqd.nr_ppas = rq_ppas;
> +	ppa_list = nvm_rq_to_ppa_list(&rqd);
> 
> 	for (i = 0; i < rqd.nr_ppas; ) {
> 		struct ppa_addr ppa = addr_to_gen_ppa(pblk, paddr, line_id);
> @@ -981,7 +985,7 @@ int pblk_line_emeta_read(struct pblk *pblk, struct pblk_line *line,
> 		}
> 
> 		for (j = 0; j < min; j++, i++, paddr++)
> -			rqd.ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line_id);
> +			ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line_id);
> 	}
> 
> 	ret = pblk_submit_io_sync(pblk, &rqd);
> @@ -1608,11 +1612,9 @@ void pblk_ppa_to_line_put(struct pblk *pblk, struct ppa_addr ppa)
> 
> void pblk_rq_to_line_put(struct pblk *pblk, struct nvm_rq *rqd)
> {
> -	struct ppa_addr *ppa_list;
> +	struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
> 	int i;
> 
> -	ppa_list = (rqd->nr_ppas > 1) ? rqd->ppa_list : &rqd->ppa_addr;
> -
> 	for (i = 0; i < rqd->nr_ppas; i++)
> 		pblk_ppa_to_line_put(pblk, ppa_list[i]);
> }
> diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
> index 4e4db38..4051b93 100644
> --- a/drivers/lightnvm/pblk-recovery.c
> +++ b/drivers/lightnvm/pblk-recovery.c
> @@ -185,6 +185,7 @@ static int pblk_recov_pad_line(struct pblk *pblk, struct pblk_line *line,
> 	struct pblk_pad_rq *pad_rq;
> 	struct nvm_rq *rqd;
> 	struct bio *bio;
> +	struct ppa_addr *ppa_list;
> 	void *data;
> 	__le64 *lba_list = emeta_to_lbas(pblk, line->emeta->buf);
> 	u64 w_ptr = line->cur_sec;
> @@ -245,6 +246,7 @@ static int pblk_recov_pad_line(struct pblk *pblk, struct pblk_line *line,
> 	rqd->end_io = pblk_end_io_recov;
> 	rqd->private = pad_rq;
> 
> +	ppa_list = nvm_rq_to_ppa_list(rqd);
> 	meta_list = rqd->meta_list;
> 
> 	for (i = 0; i < rqd->nr_ppas; ) {
> @@ -272,17 +274,17 @@ static int pblk_recov_pad_line(struct pblk *pblk, struct pblk_line *line,
> 			lba_list[w_ptr] = addr_empty;
> 			meta = pblk_get_meta(pblk, meta_list, i);
> 			meta->lba = addr_empty;
> -			rqd->ppa_list[i] = dev_ppa;
> +			ppa_list[i] = dev_ppa;
> 		}
> 	}
> 
> 	kref_get(&pad_rq->ref);
> -	pblk_down_chunk(pblk, rqd->ppa_list[0]);
> +	pblk_down_chunk(pblk, ppa_list[0]);
> 
> 	ret = pblk_submit_io(pblk, rqd);
> 	if (ret) {
> 		pblk_err(pblk, "I/O submission failed: %d\n", ret);
> -		pblk_up_chunk(pblk, rqd->ppa_list[0]);
> +		pblk_up_chunk(pblk, ppa_list[0]);
> 		kref_put(&pad_rq->ref, pblk_recov_complete);
> 		pblk_free_rqd(pblk, rqd, PBLK_WRITE_INT);
> 		bio_put(bio);
> @@ -426,6 +428,7 @@ static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line,
> 	rqd->ppa_list = ppa_list;
> 	rqd->dma_ppa_list = dma_ppa_list;
> 	rqd->dma_meta_list = dma_meta_list;
> +	ppa_list = nvm_rq_to_ppa_list(rqd);
> 
> 	if (pblk_io_aligned(pblk, rq_ppas))
> 		rqd->is_seq = 1;
> @@ -444,7 +447,7 @@ static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line,
> 		}
> 
> 		for (j = 0; j < pblk->min_write_pgs; j++, i++)
> -			rqd->ppa_list[i] =
> +			ppa_list[i] =
> 				addr_to_gen_ppa(pblk, paddr + j, line->id);
> 	}
> 
> @@ -500,7 +503,7 @@ static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line,
> 			continue;
> 
> 		line->nr_valid_lbas++;
> -		pblk_update_map(pblk, lba, rqd->ppa_list[i]);
> +		pblk_update_map(pblk, lba, ppa_list[i]);
> 	}
> 
> 	left_ppas -= rq_ppas;
> --
> 2.9.5

This is a good fix. Thanks!

Reviewed-by: Javier González <javier@javigon.com>