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lightnvm: store rrpc->soffset in device sector size

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Since we mainly use soffset in device sector size, we therefore store
this value in rrpc->soffset, instead of the offset in 512byte sector
size. This eliminates the "(ilog2(dev->sec_size) - 9)" calculation on
each I/O.

Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Updated patch description.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Wenwei Tao 2016-05-06 20:03:01 +02:00 committed by Jens Axboe
parent 66e3d07f75
commit 909049a719
1 changed files with 10 additions and 7 deletions
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17
drivers/lightnvm/rrpc.c
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@ -1039,11 +1039,8 @@ static int rrpc_map_init(struct rrpc *rrpc)
{ {
struct nvm_dev *dev = rrpc->dev; struct nvm_dev *dev = rrpc->dev;
sector_t i; sector_t i;
u64 slba;
int ret; int ret;
slba = rrpc->soffset >> (ilog2(dev->sec_size) - 9);
rrpc->trans_map = vzalloc(sizeof(struct rrpc_addr) * rrpc->nr_sects); rrpc->trans_map = vzalloc(sizeof(struct rrpc_addr) * rrpc->nr_sects);
if (!rrpc->trans_map) if (!rrpc->trans_map)
return -ENOMEM; return -ENOMEM;
@ -1065,8 +1062,8 @@ static int rrpc_map_init(struct rrpc *rrpc)
return 0; return 0;
/* Bring up the mapping table from device */ /* Bring up the mapping table from device */
ret = dev->ops->get_l2p_tbl(dev, slba, rrpc->nr_sects, rrpc_l2p_update, ret = dev->ops->get_l2p_tbl(dev, rrpc->soffset, rrpc->nr_sects,
rrpc); rrpc_l2p_update, rrpc);
if (ret) { if (ret) {
pr_err("nvm: rrpc: could not read L2P table.\n"); pr_err("nvm: rrpc: could not read L2P table.\n");
return -EINVAL; return -EINVAL;
@ -1220,18 +1217,24 @@ static int rrpc_area_init(struct rrpc *rrpc, sector_t *begin)
struct nvm_dev *dev = rrpc->dev; struct nvm_dev *dev = rrpc->dev;
struct nvmm_type *mt = dev->mt; struct nvmm_type *mt = dev->mt;
sector_t size = rrpc->nr_sects * dev->sec_size; sector_t size = rrpc->nr_sects * dev->sec_size;
int ret;
size >>= 9; size >>= 9;
return mt->get_area(dev, begin, size); ret = mt->get_area(dev, begin, size);
if (!ret)
*begin >>= (ilog2(dev->sec_size) - 9);
return ret;
} }
static void rrpc_area_free(struct rrpc *rrpc) static void rrpc_area_free(struct rrpc *rrpc)
{ {
struct nvm_dev *dev = rrpc->dev; struct nvm_dev *dev = rrpc->dev;
struct nvmm_type *mt = dev->mt; struct nvmm_type *mt = dev->mt;
sector_t begin = rrpc->soffset << (ilog2(dev->sec_size) - 9);
mt->put_area(dev, rrpc->soffset); mt->put_area(dev, begin);
} }
static void rrpc_free(struct rrpc *rrpc) static void rrpc_free(struct rrpc *rrpc)