diff options
author | Javier González <javier@cnexlabs.com> | 2017-10-13 14:46:08 +0200 |
---|---|---|
committer | Jens Axboe <axboe@kernel.dk> | 2017-10-13 08:34:57 -0600 |
commit | 0d880398cb6254ab3e110e2a8a659da65a56ffee (patch) | |
tree | 226aacdbbef55ec17523569a30bc4e3f426e4e5b /drivers/lightnvm | |
parent | b84ae4a8b883b96b95fff0e3979ff2c65bbf96b0 (diff) |
lightnvm: pblk: decouple read/erase mempools
Since read and erase paths offer different guarantees for inflight I/Os,
separate the mempools to set the right min_nr for each on creation.
Reported-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/lightnvm')
-rw-r--r-- | drivers/lightnvm/pblk-core.c | 8 | ||||
-rw-r--r-- | drivers/lightnvm/pblk-init.c | 22 | ||||
-rw-r--r-- | drivers/lightnvm/pblk.h | 5 |
3 files changed, 22 insertions, 13 deletions
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c index b92532211866..0c22e5ccdfdd 100644 --- a/drivers/lightnvm/pblk-core.c +++ b/drivers/lightnvm/pblk-core.c @@ -64,7 +64,7 @@ static void pblk_end_io_erase(struct nvm_rq *rqd) struct pblk *pblk = rqd->private; __pblk_end_io_erase(pblk, rqd); - mempool_free(rqd, pblk->g_rq_pool); + mempool_free(rqd, pblk->e_rq_pool); } void __pblk_map_invalidate(struct pblk *pblk, struct pblk_line *line, @@ -161,7 +161,7 @@ struct nvm_rq *pblk_alloc_rqd(struct pblk *pblk, int rw) pool = pblk->w_rq_pool; rq_size = pblk_w_rq_size; } else { - pool = pblk->g_rq_pool; + pool = pblk->r_rq_pool; rq_size = pblk_g_rq_size; } @@ -178,7 +178,7 @@ void pblk_free_rqd(struct pblk *pblk, struct nvm_rq *rqd, int rw) if (rw == WRITE) pool = pblk->w_rq_pool; else - pool = pblk->g_rq_pool; + pool = pblk->r_rq_pool; mempool_free(rqd, pool); } @@ -1479,7 +1479,7 @@ int pblk_blk_erase_async(struct pblk *pblk, struct ppa_addr ppa) struct nvm_rq *rqd; int err; - rqd = mempool_alloc(pblk->g_rq_pool, GFP_KERNEL); + rqd = mempool_alloc(pblk->e_rq_pool, GFP_KERNEL); memset(rqd, 0, pblk_g_rq_size); pblk_setup_e_rq(pblk, rqd, ppa); diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c index 340552253580..2f8d3f9ffbaf 100644 --- a/drivers/lightnvm/pblk-init.c +++ b/drivers/lightnvm/pblk-init.c @@ -261,15 +261,20 @@ static int pblk_core_init(struct pblk *pblk) if (!pblk->rec_pool) goto free_gen_ws_pool; - pblk->g_rq_pool = mempool_create_slab_pool(PBLK_READ_REQ_POOL_SIZE, + pblk->r_rq_pool = mempool_create_slab_pool(geo->nr_luns, pblk_g_rq_cache); - if (!pblk->g_rq_pool) + if (!pblk->r_rq_pool) goto free_rec_pool; - pblk->w_rq_pool = mempool_create_slab_pool(geo->nr_luns * 2, + pblk->e_rq_pool = mempool_create_slab_pool(geo->nr_luns, + pblk_g_rq_cache); + if (!pblk->e_rq_pool) + goto free_r_rq_pool; + + pblk->w_rq_pool = mempool_create_slab_pool(geo->nr_luns, pblk_w_rq_cache); if (!pblk->w_rq_pool) - goto free_g_rq_pool; + goto free_e_rq_pool; pblk->line_meta_pool = mempool_create_slab_pool(PBLK_META_POOL_SIZE, @@ -304,8 +309,10 @@ free_line_meta_pool: mempool_destroy(pblk->line_meta_pool); free_w_rq_pool: mempool_destroy(pblk->w_rq_pool); -free_g_rq_pool: - mempool_destroy(pblk->g_rq_pool); +free_e_rq_pool: + mempool_destroy(pblk->e_rq_pool); +free_r_rq_pool: + mempool_destroy(pblk->r_rq_pool); free_rec_pool: mempool_destroy(pblk->rec_pool); free_gen_ws_pool: @@ -326,7 +333,8 @@ static void pblk_core_free(struct pblk *pblk) mempool_destroy(pblk->page_bio_pool); mempool_destroy(pblk->gen_ws_pool); mempool_destroy(pblk->rec_pool); - mempool_destroy(pblk->g_rq_pool); + mempool_destroy(pblk->r_rq_pool); + mempool_destroy(pblk->e_rq_pool); mempool_destroy(pblk->w_rq_pool); mempool_destroy(pblk->line_meta_pool); diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h index efaa781abb06..419e1b7328e4 100644 --- a/drivers/lightnvm/pblk.h +++ b/drivers/lightnvm/pblk.h @@ -41,7 +41,6 @@ #define PBLK_MAX_REQ_ADDRS_PW (6) #define PBLK_META_POOL_SIZE (128) -#define PBLK_READ_REQ_POOL_SIZE (1024) #define PBLK_NR_CLOSE_JOBS (4) @@ -60,6 +59,7 @@ #define ERASE 2 /* READ = 0, WRITE = 1 */ +/* Static pool sizes */ #define PBLK_GEN_WS_POOL_SIZE (2) enum { @@ -624,8 +624,9 @@ struct pblk { mempool_t *page_bio_pool; mempool_t *gen_ws_pool; mempool_t *rec_pool; - mempool_t *g_rq_pool; + mempool_t *r_rq_pool; mempool_t *w_rq_pool; + mempool_t *e_rq_pool; mempool_t *line_meta_pool; struct workqueue_struct *close_wq; |