From dd439496dfbcfee1eb1e0d14984f98acb2b84c16 Mon Sep 17 00:00:00 2001 From: Igor Konopko Date: Tue, 11 Dec 2018 20:16:22 +0100 Subject: lightnvm: pblk: move lba list to partial read context MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently DMA allocated memory is reused on partial read for lba_list_mem and lba_list_media arrays. In preparation for dynamic DMA pool sizes we need to move this arrays into pblk_pr_ctx structures. Reviewed-by: Javier González Signed-off-by: Igor Konopko Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe --- drivers/lightnvm/pblk-read.c | 20 +++++--------------- drivers/lightnvm/pblk.h | 2 ++ 2 files changed, 7 insertions(+), 15 deletions(-) (limited to 'drivers/lightnvm') diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c index 9fba614adeeb..19917d3c19b3 100644 --- a/drivers/lightnvm/pblk-read.c +++ b/drivers/lightnvm/pblk-read.c @@ -224,7 +224,6 @@ static void pblk_end_partial_read(struct nvm_rq *rqd) unsigned long *read_bitmap = pr_ctx->bitmap; int nr_secs = pr_ctx->orig_nr_secs; int nr_holes = nr_secs - bitmap_weight(read_bitmap, nr_secs); - __le64 *lba_list_mem, *lba_list_media; void *src_p, *dst_p; int hole, i; @@ -237,13 +236,9 @@ static void pblk_end_partial_read(struct nvm_rq *rqd) rqd->ppa_list[0] = ppa; } - /* Re-use allocated memory for intermediate lbas */ - lba_list_mem = (((void *)rqd->ppa_list) + pblk_dma_ppa_size); - lba_list_media = (((void *)rqd->ppa_list) + 2 * pblk_dma_ppa_size); - for (i = 0; i < nr_secs; i++) { - lba_list_media[i] = meta_list[i].lba; - meta_list[i].lba = lba_list_mem[i]; + pr_ctx->lba_list_media[i] = meta_list[i].lba; + meta_list[i].lba = pr_ctx->lba_list_mem[i]; } /* Fill the holes in the original bio */ @@ -255,7 +250,7 @@ static void pblk_end_partial_read(struct nvm_rq *rqd) line = pblk_ppa_to_line(pblk, rqd->ppa_list[i]); kref_put(&line->ref, pblk_line_put); - meta_list[hole].lba = lba_list_media[i]; + meta_list[hole].lba = pr_ctx->lba_list_media[i]; src_bv = new_bio->bi_io_vec[i++]; dst_bv = bio->bi_io_vec[bio_init_idx + hole]; @@ -295,13 +290,9 @@ static int pblk_setup_partial_read(struct pblk *pblk, struct nvm_rq *rqd, struct pblk_g_ctx *r_ctx = nvm_rq_to_pdu(rqd); struct pblk_pr_ctx *pr_ctx; struct bio *new_bio, *bio = r_ctx->private; - __le64 *lba_list_mem; int nr_secs = rqd->nr_ppas; int i; - /* Re-use allocated memory for intermediate lbas */ - lba_list_mem = (((void *)rqd->ppa_list) + pblk_dma_ppa_size); - new_bio = bio_alloc(GFP_KERNEL, nr_holes); if (pblk_bio_add_pages(pblk, new_bio, GFP_KERNEL, nr_holes)) @@ -312,12 +303,12 @@ static int pblk_setup_partial_read(struct pblk *pblk, struct nvm_rq *rqd, goto fail_free_pages; } - pr_ctx = kmalloc(sizeof(struct pblk_pr_ctx), GFP_KERNEL); + pr_ctx = kzalloc(sizeof(struct pblk_pr_ctx), GFP_KERNEL); if (!pr_ctx) goto fail_free_pages; for (i = 0; i < nr_secs; i++) - lba_list_mem[i] = meta_list[i].lba; + pr_ctx->lba_list_mem[i] = meta_list[i].lba; new_bio->bi_iter.bi_sector = 0; /* internal bio */ bio_set_op_attrs(new_bio, REQ_OP_READ, 0); @@ -325,7 +316,6 @@ static int pblk_setup_partial_read(struct pblk *pblk, struct nvm_rq *rqd, rqd->bio = new_bio; rqd->nr_ppas = nr_holes; - pr_ctx->ppa_ptr = NULL; pr_ctx->orig_bio = bio; bitmap_copy(pr_ctx->bitmap, read_bitmap, NVM_MAX_VLBA); pr_ctx->bio_init_idx = bio_init_idx; diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h index e5b88a25d4d6..0e9d3960ac4c 100644 --- a/drivers/lightnvm/pblk.h +++ b/drivers/lightnvm/pblk.h @@ -132,6 +132,8 @@ struct pblk_pr_ctx { unsigned int bio_init_idx; void *ppa_ptr; dma_addr_t dma_ppa_list; + __le64 lba_list_mem[NVM_MAX_VLBA]; + __le64 lba_list_media[NVM_MAX_VLBA]; }; /* Pad context */ -- cgit