From cb21665c8d13bb7e1f6e211442c53f4675f1569d Mon Sep 17 00:00:00 2001 From: =?utf8?q?Javier=20Gonz=C3=A1lez?= Date: Tue, 9 Oct 2018 13:11:42 +0200 Subject: [PATCH] lightnvm: pblk: improve line helpers MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe --- 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 5f99cf396072..36ac9eff8ebd 100644 --- a/drivers/lightnvm/pblk-core.c +++ b/drivers/lightnvm/pblk-core.c @@ -32,7 +32,7 @@ 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", @@ -80,7 +80,7 @@ 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]; @@ -192,7 +192,6 @@ 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 */ @@ -200,8 +199,7 @@ 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); @@ -1430,7 +1428,7 @@ 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); } @@ -1688,7 +1686,7 @@ 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)); } @@ -2059,8 +2057,7 @@ 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 ad1d7713bbda..49744caaa300 100644 --- a/drivers/lightnvm/pblk-read.c +++ b/drivers/lightnvm/pblk-read.c @@ -252,9 +252,9 @@ 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 df99c45778d4..c23b65aaa27b 100644 --- a/drivers/lightnvm/pblk-write.c +++ b/drivers/lightnvm/pblk-write.c @@ -113,7 +113,7 @@ 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) { @@ -171,7 +171,7 @@ 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 f95fe75fef6e..af9477b7e803 100644 --- a/drivers/lightnvm/pblk.h +++ b/drivers/lightnvm/pblk.h @@ -984,11 +984,17 @@ 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; @@ -1039,7 +1045,7 @@ 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]; @@ -1371,8 +1377,7 @@ 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) { -- 2.30.2