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author | Javier González <javier@cnexlabs.com> | 2017-10-13 14:46:12 +0200 |
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committer | Jens Axboe <axboe@kernel.dk> | 2017-10-13 08:34:57 -0600 |
commit | 9f6cb13bb40bd9067498e908a3272aba998c0309 (patch) | |
tree | c72d82d859d5b805324058c3ae7507465b81088e /drivers/lightnvm | |
parent | 3627896a4b12ea6bb9e0ff77724a24f53726db2d (diff) | |
download | linux-stable-9f6cb13bb40bd9067498e908a3272aba998c0309.tar.gz linux-stable-9f6cb13bb40bd9067498e908a3272aba998c0309.tar.bz2 linux-stable-9f6cb13bb40bd9067498e908a3272aba998c0309.zip |
lightnvm: pblk: normalize ppa namings
Normalize the way we name ppa variables to improve code readability.
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 | 48 |
1 files changed, 25 insertions, 23 deletions
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c index 0da58869006b..b6d7c6660149 100644 --- a/drivers/lightnvm/pblk-core.c +++ b/drivers/lightnvm/pblk-core.c @@ -1746,7 +1746,7 @@ void pblk_up_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas, void pblk_update_map(struct pblk *pblk, sector_t lba, struct ppa_addr ppa) { - struct ppa_addr l2p_ppa; + struct ppa_addr ppa_l2p; /* logic error: lba out-of-bounds. Ignore update */ if (!(lba < pblk->rl.nr_secs)) { @@ -1755,10 +1755,10 @@ void pblk_update_map(struct pblk *pblk, sector_t lba, struct ppa_addr ppa) } spin_lock(&pblk->trans_lock); - l2p_ppa = pblk_trans_map_get(pblk, lba); + ppa_l2p = pblk_trans_map_get(pblk, lba); - if (!pblk_addr_in_cache(l2p_ppa) && !pblk_ppa_empty(l2p_ppa)) - pblk_map_invalidate(pblk, l2p_ppa); + if (!pblk_addr_in_cache(ppa_l2p) && !pblk_ppa_empty(ppa_l2p)) + pblk_map_invalidate(pblk, ppa_l2p); pblk_trans_map_set(pblk, lba, ppa); spin_unlock(&pblk->trans_lock); @@ -1775,16 +1775,16 @@ void pblk_update_map_cache(struct pblk *pblk, sector_t lba, struct ppa_addr ppa) pblk_update_map(pblk, lba, ppa); } -int pblk_update_map_gc(struct pblk *pblk, sector_t lba, struct ppa_addr ppa, +int pblk_update_map_gc(struct pblk *pblk, sector_t lba, struct ppa_addr ppa_new, struct pblk_line *gc_line) { - struct ppa_addr l2p_ppa; + struct ppa_addr ppa_l2p; int ret = 1; #ifdef CONFIG_NVM_DEBUG /* Callers must ensure that the ppa points to a cache address */ - BUG_ON(!pblk_addr_in_cache(ppa)); - BUG_ON(pblk_rb_pos_oob(&pblk->rwb, pblk_addr_to_cacheline(ppa))); + BUG_ON(!pblk_addr_in_cache(ppa_new)); + BUG_ON(pblk_rb_pos_oob(&pblk->rwb, pblk_addr_to_cacheline(ppa_new))); #endif /* logic error: lba out-of-bounds. Ignore update */ @@ -1794,36 +1794,38 @@ int pblk_update_map_gc(struct pblk *pblk, sector_t lba, struct ppa_addr ppa, } spin_lock(&pblk->trans_lock); - l2p_ppa = pblk_trans_map_get(pblk, lba); + ppa_l2p = pblk_trans_map_get(pblk, lba); /* Prevent updated entries to be overwritten by GC */ - if (pblk_addr_in_cache(l2p_ppa) || pblk_ppa_empty(l2p_ppa) || - pblk_tgt_ppa_to_line(l2p_ppa) != gc_line->id) { + if (pblk_addr_in_cache(ppa_l2p) || pblk_ppa_empty(ppa_l2p) || + pblk_tgt_ppa_to_line(ppa_l2p) != gc_line->id) { + ret = 0; goto out; } - pblk_trans_map_set(pblk, lba, ppa); + pblk_trans_map_set(pblk, lba, ppa_new); out: spin_unlock(&pblk->trans_lock); return ret; } -void pblk_update_map_dev(struct pblk *pblk, sector_t lba, struct ppa_addr ppa, - struct ppa_addr entry_line) +void pblk_update_map_dev(struct pblk *pblk, sector_t lba, + struct ppa_addr ppa_mapped, struct ppa_addr ppa_cache) { - struct ppa_addr l2p_line; + struct ppa_addr ppa_l2p; #ifdef CONFIG_NVM_DEBUG /* Callers must ensure that the ppa points to a device address */ - BUG_ON(pblk_addr_in_cache(ppa)); + BUG_ON(pblk_addr_in_cache(ppa_mapped)); #endif /* Invalidate and discard padded entries */ if (lba == ADDR_EMPTY) { #ifdef CONFIG_NVM_DEBUG atomic_long_inc(&pblk->padded_wb); #endif - pblk_map_invalidate(pblk, ppa); + if (!pblk_ppa_empty(ppa_mapped)) + pblk_map_invalidate(pblk, ppa_mapped); return; } @@ -1834,22 +1836,22 @@ void pblk_update_map_dev(struct pblk *pblk, sector_t lba, struct ppa_addr ppa, } spin_lock(&pblk->trans_lock); - l2p_line = pblk_trans_map_get(pblk, lba); + ppa_l2p = pblk_trans_map_get(pblk, lba); /* Do not update L2P if the cacheline has been updated. In this case, * the mapped ppa must be invalidated */ - if (l2p_line.ppa != entry_line.ppa) { - if (!pblk_ppa_empty(ppa)) - pblk_map_invalidate(pblk, ppa); + if (!pblk_ppa_comp(ppa_l2p, ppa_cache)) { + if (!pblk_ppa_empty(ppa_mapped)) + pblk_map_invalidate(pblk, ppa_mapped); goto out; } #ifdef CONFIG_NVM_DEBUG - WARN_ON(!pblk_addr_in_cache(l2p_line) && !pblk_ppa_empty(l2p_line)); + WARN_ON(!pblk_addr_in_cache(ppa_l2p) && !pblk_ppa_empty(ppa_l2p)); #endif - pblk_trans_map_set(pblk, lba, ppa); + pblk_trans_map_set(pblk, lba, ppa_mapped); out: spin_unlock(&pblk->trans_lock); } |