lkml.org 
[lkml]   [2017]   [Oct]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[GIT PULL 11/58] lightnvm: pblk: reuse pblk_gc_should_kick
Date
From: Rakesh Pandit <rakesh@tuxera.com>

This is a trivial change which reuses pblk_gc_should_kick instead of
repeating it again in pblk_rl_free_lines_inc.

Signed-off-by: Rakesh Pandit <rakesh@tuxera.com>
Made it apply to the common case.
Reviewed-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
---
drivers/lightnvm/pblk-core.c | 2 --
drivers/lightnvm/pblk-rl.c | 33 +++++++++------------------------
drivers/lightnvm/pblk.h | 1 -
3 files changed, 9 insertions(+), 27 deletions(-)

diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index 8536d38..a68c6ae 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -1591,8 +1591,6 @@ void pblk_line_close(struct pblk *pblk, struct pblk_line *line)

spin_unlock(&line->lock);
spin_unlock(&l_mg->gc_lock);
-
- pblk_gc_should_kick(pblk);
}

void pblk_line_close_meta(struct pblk *pblk, struct pblk_line *line)
diff --git a/drivers/lightnvm/pblk-rl.c b/drivers/lightnvm/pblk-rl.c
index 2e6a536..9565c3b 100644
--- a/drivers/lightnvm/pblk-rl.c
+++ b/drivers/lightnvm/pblk-rl.c
@@ -96,9 +96,11 @@ unsigned long pblk_rl_nr_free_blks(struct pblk_rl *rl)
*
* Only the total number of free blocks is used to configure the rate limiter.
*/
-static int pblk_rl_update_rates(struct pblk_rl *rl, unsigned long max)
+static void pblk_rl_update_rates(struct pblk_rl *rl)
{
+ struct pblk *pblk = container_of(rl, struct pblk, rl);
unsigned long free_blocks = pblk_rl_nr_free_blks(rl);
+ int max = rl->rb_budget;

if (free_blocks >= rl->high) {
rl->rb_user_max = max;
@@ -124,23 +126,18 @@ static int pblk_rl_update_rates(struct pblk_rl *rl, unsigned long max)
rl->rb_state = PBLK_RL_LOW;
}

- return rl->rb_state;
+ if (rl->rb_state == (PBLK_RL_MID | PBLK_RL_LOW))
+ pblk_gc_should_start(pblk);
+ else
+ pblk_gc_should_stop(pblk);
}

void pblk_rl_free_lines_inc(struct pblk_rl *rl, struct pblk_line *line)
{
- struct pblk *pblk = container_of(rl, struct pblk, rl);
int blk_in_line = atomic_read(&line->blk_in_line);
- int ret;

atomic_add(blk_in_line, &rl->free_blocks);
- /* Rates will not change that often - no need to lock update */
- ret = pblk_rl_update_rates(rl, rl->rb_budget);
-
- if (ret == (PBLK_RL_MID | PBLK_RL_LOW))
- pblk_gc_should_start(pblk);
- else
- pblk_gc_should_stop(pblk);
+ pblk_rl_update_rates(rl);
}

void pblk_rl_free_lines_dec(struct pblk_rl *rl, struct pblk_line *line)
@@ -148,19 +145,7 @@ void pblk_rl_free_lines_dec(struct pblk_rl *rl, struct pblk_line *line)
int blk_in_line = atomic_read(&line->blk_in_line);

atomic_sub(blk_in_line, &rl->free_blocks);
-}
-
-void pblk_gc_should_kick(struct pblk *pblk)
-{
- struct pblk_rl *rl = &pblk->rl;
- int ret;
-
- /* Rates will not change that often - no need to lock update */
- ret = pblk_rl_update_rates(rl, rl->rb_budget);
- if (ret == (PBLK_RL_MID | PBLK_RL_LOW))
- pblk_gc_should_start(pblk);
- else
- pblk_gc_should_stop(pblk);
+ pblk_rl_update_rates(rl);
}

int pblk_rl_high_thrs(struct pblk_rl *rl)
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index 9ece409..3a07c5b 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -824,7 +824,6 @@ int pblk_gc_init(struct pblk *pblk);
void pblk_gc_exit(struct pblk *pblk);
void pblk_gc_should_start(struct pblk *pblk);
void pblk_gc_should_stop(struct pblk *pblk);
-void pblk_gc_should_kick(struct pblk *pblk);
void pblk_gc_kick(struct pblk *pblk);
void pblk_gc_sysfs_state_show(struct pblk *pblk, int *gc_enabled,
int *gc_active);
--
2.9.3
\
 
 \ /
  Last update: 2017-10-13 15:01    [W:0.324 / U:0.604 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site