Re: [PATCH] lightnvm: pblk: improve line helpers
From: Matias BjÃrling
Date: Wed Aug 29 2018 - 10:17:12 EST
On 08/29/2018 10:44 AM, Javier GonzÃlez wrote:
The current helper to obtain a line from a ppa returns the line id,
which requires its users to explicitly retrieve the pointer to the line
with the id.
Make 2 different helpers: one returning the line id and one returning
the line directly.
Signed-off-by: Javier GonzÃlez <javier@xxxxxxxxxxxx>
---
drivers/lightnvm/pblk-core.c | 15 ++++++---------
drivers/lightnvm/pblk-rb.c | 2 +-
drivers/lightnvm/pblk-read.c | 4 ++--
drivers/lightnvm/pblk-write.c | 4 ++--
drivers/lightnvm/pblk.h | 13 +++++++++----
5 files changed, 20 insertions(+), 18 deletions(-)
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index 8e3f3c5fe233..dbf037b2b32f 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -35,7 +35,7 @@ static void pblk_line_mark_bb(struct work_struct *work)
struct pblk_line *line;
int pos;
- line = &pblk->lines[pblk_ppa_to_line(*ppa)];
+ line = pblk_ppa_to_line(pblk, *ppa);
pos = pblk_ppa_to_pos(&dev->geo, *ppa);
pblk_err(pblk, "failed to mark bb, line:%d, pos:%d\n",
@@ -83,7 +83,7 @@ static void __pblk_end_io_erase(struct pblk *pblk, struct nvm_rq *rqd)
struct pblk_line *line;
int pos;
- line = &pblk->lines[pblk_ppa_to_line(rqd->ppa_addr)];
+ line = pblk_ppa_to_line(pblk, rqd->ppa_addr);
pos = pblk_ppa_to_pos(geo, rqd->ppa_addr);
chunk = &line->chks[pos];
@@ -204,7 +204,6 @@ void pblk_map_invalidate(struct pblk *pblk, struct ppa_addr ppa)
{
struct pblk_line *line;
u64 paddr;
- int line_id;
#ifdef CONFIG_NVM_PBLK_DEBUG
/* Callers must ensure that the ppa points to a device address */
@@ -212,8 +211,7 @@ void pblk_map_invalidate(struct pblk *pblk, struct ppa_addr ppa)
BUG_ON(pblk_ppa_empty(ppa));
#endif
- line_id = pblk_ppa_to_line(ppa);
- line = &pblk->lines[line_id];
+ line = pblk_ppa_to_line(pblk, ppa);
paddr = pblk_dev_ppa_to_line_addr(pblk, ppa);
__pblk_map_invalidate(pblk, line, paddr);
@@ -1493,7 +1491,7 @@ void pblk_ppa_to_line_put(struct pblk *pblk, struct ppa_addr ppa)
{
struct pblk_line *line;
- line = &pblk->lines[pblk_ppa_to_line(ppa)];
+ line = pblk_ppa_to_line(pblk, ppa);
kref_put(&line->ref, pblk_line_put_wq);
}
@@ -1759,7 +1757,7 @@ int pblk_blk_erase_async(struct pblk *pblk, struct ppa_addr ppa)
struct nvm_geo *geo = &dev->geo;
pblk_err(pblk, "could not async erase line:%d,blk:%d\n",
- pblk_ppa_to_line(ppa),
+ pblk_ppa_to_line_id(ppa),
pblk_ppa_to_pos(geo, ppa));
}
@@ -2131,8 +2129,7 @@ void pblk_lookup_l2p_seq(struct pblk *pblk, struct ppa_addr *ppas,
/* If the L2P entry maps to a line, the reference is valid */
if (!pblk_ppa_empty(ppa) && !pblk_addr_in_cache(ppa)) {
- int line_id = pblk_ppa_to_line(ppa);
- struct pblk_line *line = &pblk->lines[line_id];
+ struct pblk_line *line = pblk_ppa_to_line(pblk, ppa);
kref_get(&line->ref);
}
diff --git a/drivers/lightnvm/pblk-rb.c b/drivers/lightnvm/pblk-rb.c
index f6eec0212dfc..a7648e12f54f 100644
--- a/drivers/lightnvm/pblk-rb.c
+++ b/drivers/lightnvm/pblk-rb.c
@@ -225,7 +225,7 @@ static int __pblk_rb_update_l2p(struct pblk_rb *rb, unsigned int to_update)
pblk_update_map_dev(pblk, w_ctx->lba, w_ctx->ppa,
entry->cacheline);
- line = &pblk->lines[pblk_ppa_to_line(w_ctx->ppa)];
+ line = pblk_ppa_to_line(pblk, w_ctx->ppa);
kref_put(&line->ref, pblk_line_put);
clean_wctx(w_ctx);
rb->l2p_update = (rb->l2p_update + 1) & (rb->nr_entries - 1);
diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c
index 97d602f153e2..6d13763f2f6a 100644
--- a/drivers/lightnvm/pblk-read.c
+++ b/drivers/lightnvm/pblk-read.c
@@ -249,9 +249,9 @@ static void pblk_end_partial_read(struct nvm_rq *rqd)
i = 0;
hole = find_first_zero_bit(read_bitmap, nr_secs);
do {
- int line_id = pblk_ppa_to_line(rqd->ppa_list[i]);
- struct pblk_line *line = &pblk->lines[line_id];
+ struct pblk_line *line;
+ 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];
diff --git a/drivers/lightnvm/pblk-write.c b/drivers/lightnvm/pblk-write.c
index a3c77092ad3f..8ea66bb83c29 100644
--- a/drivers/lightnvm/pblk-write.c
+++ b/drivers/lightnvm/pblk-write.c
@@ -148,7 +148,7 @@ static void pblk_map_remaining(struct pblk *pblk, struct ppa_addr *ppa)
u64 paddr;
int done = 0;
- line = &pblk->lines[pblk_ppa_to_line(*ppa)];
+ line = pblk_ppa_to_line(pblk, *ppa);
spin_lock(&line->lock);
while (!done) {
@@ -198,7 +198,7 @@ static void pblk_prepare_resubmit(struct pblk *pblk, unsigned int sentry,
/* Decrese the reference count to the line as we will
* re-map these entries
*/
- line = &pblk->lines[pblk_ppa_to_line(w_ctx->ppa)];
+ line = pblk_ppa_to_line(pblk, w_ctx->ppa);
kref_put(&line->ref, pblk_line_put);
pos = (pos + 1) & (rb->nr_entries - 1);
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index 23e6b3528852..6195e3f5d2e6 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -994,11 +994,17 @@ static inline int pblk_pad_distance(struct pblk *pblk)
return geo->mw_cunits * geo->all_luns * geo->ws_opt;
}
-static inline int pblk_ppa_to_line(struct ppa_addr p)
+static inline int pblk_ppa_to_line_id(struct ppa_addr p)
{
return p.a.blk;
}
+static inline struct pblk_line *pblk_ppa_to_line(struct pblk *pblk,
+ struct ppa_addr p)
+{
+ return &pblk->lines[pblk_ppa_to_line_id(p)];
+}
+
static inline int pblk_ppa_to_pos(struct nvm_geo *geo, struct ppa_addr p)
{
return p.a.lun * geo->num_ch + p.a.ch;
@@ -1049,7 +1055,7 @@ static inline struct nvm_chk_meta *pblk_dev_ppa_to_chunk(struct pblk *pblk,
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
- struct pblk_line *line = &pblk->lines[pblk_ppa_to_line(p)];
+ struct pblk_line *line = pblk_ppa_to_line(pblk, p);
int pos = pblk_ppa_to_pos(geo, p);
return &line->chks[pos];
@@ -1391,8 +1397,7 @@ static inline int pblk_check_io(struct pblk *pblk, struct nvm_rq *rqd)
int i;
for (i = 0; i < rqd->nr_ppas; i++) {
- ppa = ppa_list[i];
- line = &pblk->lines[pblk_ppa_to_line(ppa)];
+ line = pblk_ppa_to_line(pblk, ppa_list[i]);
spin_lock(&line->lock);
if (line->state != PBLK_LINESTATE_OPEN) {
Thanks. Applied for 4.20.