diff options
| author | Hans Holmberg <hans.holmberg@cnexlabs.com> | 2017-10-13 14:46:37 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-10-13 08:34:57 -0600 |
| commit | 03661b5f756c92b9924869334a2afa19753c4fe7 (patch) | |
| tree | abe763a5913b21f5fb86440cd54b2e8be2e69e4e | |
| parent | 37ce33d5756f4ba8bdd45371a1918ceeeba5b158 (diff) | |
| download | linux-03661b5f756c92b9924869334a2afa19753c4fe7.tar.bz2 | |
lightnvm: pblk: start gc if needed during init
Start GC if needed, directly after init, as we might
need to garbage collect in order to make room for user writes.
Create a helper function that allows to kick GC without exposing the
internals of the GC/rate-limiter interaction.
Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | drivers/lightnvm/pblk-gc.c | 5 | ||||
| -rw-r--r-- | drivers/lightnvm/pblk-init.c | 4 | ||||
| -rw-r--r-- | drivers/lightnvm/pblk-rl.c | 2 | ||||
| -rw-r--r-- | drivers/lightnvm/pblk.h | 2 |
4 files changed, 12 insertions, 1 deletions
diff --git a/drivers/lightnvm/pblk-gc.c b/drivers/lightnvm/pblk-gc.c index 374089fe4326..4bac9e1531f5 100644 --- a/drivers/lightnvm/pblk-gc.c +++ b/drivers/lightnvm/pblk-gc.c @@ -510,6 +510,11 @@ void pblk_gc_should_stop(struct pblk *pblk) pblk_gc_stop(pblk, 0); } +void pblk_gc_should_kick(struct pblk *pblk) +{ + pblk_rl_update_rates(&pblk->rl); +} + void pblk_gc_sysfs_state_show(struct pblk *pblk, int *gc_enabled, int *gc_active) { diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c index f08fa2083fbc..ad9f014a086b 100644 --- a/drivers/lightnvm/pblk-init.c +++ b/drivers/lightnvm/pblk-init.c @@ -1025,6 +1025,10 @@ static void *pblk_init(struct nvm_tgt_dev *dev, struct gendisk *tdisk, pblk->rwb.nr_entries); wake_up_process(pblk->writer_ts); + + /* Check if we need to start GC */ + pblk_gc_should_kick(pblk); + return pblk; fail_stop_writer: diff --git a/drivers/lightnvm/pblk-rl.c b/drivers/lightnvm/pblk-rl.c index 0896439a91b0..739f855d4216 100644 --- a/drivers/lightnvm/pblk-rl.c +++ b/drivers/lightnvm/pblk-rl.c @@ -96,7 +96,7 @@ 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 void pblk_rl_update_rates(struct pblk_rl *rl) +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); diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h index 21438d1550a2..29ba7ec32b20 100644 --- a/drivers/lightnvm/pblk.h +++ b/drivers/lightnvm/pblk.h @@ -830,6 +830,7 @@ 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_free_full_lines(struct pblk *pblk); void pblk_gc_sysfs_state_show(struct pblk *pblk, int *gc_enabled, @@ -841,6 +842,7 @@ int pblk_gc_sysfs_force(struct pblk *pblk, int force); */ void pblk_rl_init(struct pblk_rl *rl, int budget); void pblk_rl_free(struct pblk_rl *rl); +void pblk_rl_update_rates(struct pblk_rl *rl); int pblk_rl_high_thrs(struct pblk_rl *rl); int pblk_rl_low_thrs(struct pblk_rl *rl); unsigned long pblk_rl_nr_free_blks(struct pblk_rl *rl); |