[PATCH 03/20] lightnvm: pblk: spare double cpu_to_le64 calc.

From: Javier GonzÃlez
Date: Mon Jun 26 2017 - 05:58:33 EST


Spare a double calculation on the fast write path.

Signed-off-by: Javier GonzÃlez <javier@xxxxxxxxxxxx>
Signed-off-by: Matias BjÃrling <matias@xxxxxxxxxxxx>
---
drivers/lightnvm/pblk-map.c | 5 +++--
drivers/lightnvm/pblk-recovery.c | 4 ++--
2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/lightnvm/pblk-map.c b/drivers/lightnvm/pblk-map.c
index 17c16955284d..18291c238930 100644
--- a/drivers/lightnvm/pblk-map.c
+++ b/drivers/lightnvm/pblk-map.c
@@ -53,8 +53,9 @@ static void pblk_map_page_data(struct pblk *pblk, unsigned int sentry,
lba_list[paddr] = cpu_to_le64(w_ctx->lba);
le64_add_cpu(&line->emeta->nr_valid_lbas, 1);
} else {
- meta_list[i].lba = cpu_to_le64(ADDR_EMPTY);
- lba_list[paddr] = cpu_to_le64(ADDR_EMPTY);
+ u64 addr_empty = cpu_to_le64(ADDR_EMPTY);
+
+ lba_list[paddr] = meta_list[i].lba = addr_empty;
pblk_map_pad_invalidate(pblk, line, paddr);
}
}
diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
index f8f85087cd3c..82787006b865 100644
--- a/drivers/lightnvm/pblk-recovery.c
+++ b/drivers/lightnvm/pblk-recovery.c
@@ -390,12 +390,12 @@ static int pblk_recov_pad_oob(struct pblk *pblk, struct pblk_line *line,

for (j = 0; j < pblk->min_write_pgs; j++, i++, w_ptr++) {
struct ppa_addr dev_ppa;
+ u64 addr_empty = cpu_to_le64(ADDR_EMPTY);

dev_ppa = addr_to_gen_ppa(pblk, w_ptr, line->id);

pblk_map_invalidate(pblk, dev_ppa);
- meta_list[i].lba = cpu_to_le64(ADDR_EMPTY);
- lba_list[w_ptr] = cpu_to_le64(ADDR_EMPTY);
+ lba_list[w_ptr] = meta_list[i].lba = addr_empty;
rqd->ppa_list[i] = dev_ppa;
}
}
--
2.7.4