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path: root/drivers/lightnvm/pblk-read.c
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Diffstat (limited to 'drivers/lightnvm/pblk-read.c')
-rw-r--r--drivers/lightnvm/pblk-read.c66
1 files changed, 38 insertions, 28 deletions
diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c
index 9fba614adeeb..3789185144da 100644
--- a/drivers/lightnvm/pblk-read.c
+++ b/drivers/lightnvm/pblk-read.c
@@ -43,7 +43,7 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd,
struct bio *bio, sector_t blba,
unsigned long *read_bitmap)
{
- struct pblk_sec_meta *meta_list = rqd->meta_list;
+ void *meta_list = rqd->meta_list;
struct ppa_addr ppas[NVM_MAX_VLBA];
int nr_secs = rqd->nr_ppas;
bool advanced_bio = false;
@@ -53,12 +53,15 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd,
for (i = 0; i < nr_secs; i++) {
struct ppa_addr p = ppas[i];
+ struct pblk_sec_meta *meta = pblk_get_meta(pblk, meta_list, i);
sector_t lba = blba + i;
retry:
if (pblk_ppa_empty(p)) {
+ __le64 addr_empty = cpu_to_le64(ADDR_EMPTY);
+
WARN_ON(test_and_set_bit(i, read_bitmap));
- meta_list[i].lba = cpu_to_le64(ADDR_EMPTY);
+ meta->lba = addr_empty;
if (unlikely(!advanced_bio)) {
bio_advance(bio, (i) * PBLK_EXPOSED_PAGE_SIZE);
@@ -78,7 +81,7 @@ retry:
goto retry;
}
WARN_ON(test_and_set_bit(i, read_bitmap));
- meta_list[i].lba = cpu_to_le64(lba);
+ meta->lba = cpu_to_le64(lba);
advanced_bio = true;
#ifdef CONFIG_NVM_PBLK_DEBUG
atomic_long_inc(&pblk->cache_reads);
@@ -105,12 +108,16 @@ next:
static void pblk_read_check_seq(struct pblk *pblk, struct nvm_rq *rqd,
sector_t blba)
{
- struct pblk_sec_meta *meta_lba_list = rqd->meta_list;
+ void *meta_list = rqd->meta_list;
int nr_lbas = rqd->nr_ppas;
int i;
+ if (!pblk_is_oob_meta_supported(pblk))
+ return;
+
for (i = 0; i < nr_lbas; i++) {
- u64 lba = le64_to_cpu(meta_lba_list[i].lba);
+ struct pblk_sec_meta *meta = pblk_get_meta(pblk, meta_list, i);
+ u64 lba = le64_to_cpu(meta->lba);
if (lba == ADDR_EMPTY)
continue;
@@ -134,17 +141,22 @@ static void pblk_read_check_seq(struct pblk *pblk, struct nvm_rq *rqd,
static void pblk_read_check_rand(struct pblk *pblk, struct nvm_rq *rqd,
u64 *lba_list, int nr_lbas)
{
- struct pblk_sec_meta *meta_lba_list = rqd->meta_list;
+ void *meta_lba_list = rqd->meta_list;
int i, j;
+ if (!pblk_is_oob_meta_supported(pblk))
+ return;
+
for (i = 0, j = 0; i < nr_lbas; i++) {
+ struct pblk_sec_meta *meta = pblk_get_meta(pblk,
+ meta_lba_list, j);
u64 lba = lba_list[i];
u64 meta_lba;
if (lba == ADDR_EMPTY)
continue;
- meta_lba = le64_to_cpu(meta_lba_list[j].lba);
+ meta_lba = le64_to_cpu(meta->lba);
if (lba != meta_lba) {
#ifdef CONFIG_NVM_PBLK_DEBUG
@@ -216,15 +228,15 @@ static void pblk_end_partial_read(struct nvm_rq *rqd)
struct pblk *pblk = rqd->private;
struct pblk_g_ctx *r_ctx = nvm_rq_to_pdu(rqd);
struct pblk_pr_ctx *pr_ctx = r_ctx->private;
+ struct pblk_sec_meta *meta;
struct bio *new_bio = rqd->bio;
struct bio *bio = pr_ctx->orig_bio;
struct bio_vec src_bv, dst_bv;
- struct pblk_sec_meta *meta_list = rqd->meta_list;
+ void *meta_list = rqd->meta_list;
int bio_init_idx = pr_ctx->bio_init_idx;
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 +249,10 @@ 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];
+ meta = pblk_get_meta(pblk, meta_list, i);
+ pr_ctx->lba_list_media[i] = le64_to_cpu(meta->lba);
+ meta->lba = cpu_to_le64(pr_ctx->lba_list_mem[i]);
}
/* Fill the holes in the original bio */
@@ -255,7 +264,8 @@ 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 = pblk_get_meta(pblk, meta_list, hole);
+ meta->lba = cpu_to_le64(pr_ctx->lba_list_media[i]);
src_bv = new_bio->bi_io_vec[i++];
dst_bv = bio->bi_io_vec[bio_init_idx + hole];
@@ -291,17 +301,13 @@ static int pblk_setup_partial_read(struct pblk *pblk, struct nvm_rq *rqd,
unsigned long *read_bitmap,
int nr_holes)
{
- struct pblk_sec_meta *meta_list = rqd->meta_list;
+ void *meta_list = rqd->meta_list;
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 +318,15 @@ 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;
+ for (i = 0; i < nr_secs; i++) {
+ struct pblk_sec_meta *meta = pblk_get_meta(pblk, meta_list, i);
+
+ pr_ctx->lba_list_mem[i] = le64_to_cpu(meta->lba);
+ }
new_bio->bi_iter.bi_sector = 0; /* internal bio */
bio_set_op_attrs(new_bio, REQ_OP_READ, 0);
@@ -325,7 +334,6 @@ 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;
@@ -383,7 +391,7 @@ err:
static void pblk_read_rq(struct pblk *pblk, struct nvm_rq *rqd, struct bio *bio,
sector_t lba, unsigned long *read_bitmap)
{
- struct pblk_sec_meta *meta_list = rqd->meta_list;
+ struct pblk_sec_meta *meta = pblk_get_meta(pblk, rqd->meta_list, 0);
struct ppa_addr ppa;
pblk_lookup_l2p_seq(pblk, &ppa, lba, 1);
@@ -394,8 +402,10 @@ static void pblk_read_rq(struct pblk *pblk, struct nvm_rq *rqd, struct bio *bio,
retry:
if (pblk_ppa_empty(ppa)) {
+ __le64 addr_empty = cpu_to_le64(ADDR_EMPTY);
+
WARN_ON(test_and_set_bit(0, read_bitmap));
- meta_list[0].lba = cpu_to_le64(ADDR_EMPTY);
+ meta->lba = addr_empty;
return;
}
@@ -409,7 +419,7 @@ retry:
}
WARN_ON(test_and_set_bit(0, read_bitmap));
- meta_list[0].lba = cpu_to_le64(lba);
+ meta->lba = cpu_to_le64(lba);
#ifdef CONFIG_NVM_PBLK_DEBUG
atomic_long_inc(&pblk->cache_reads);
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