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bdev/ocssd: Factor out getting chunk info. offset from _get_zone_info()

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Factor out getting chunk info. offset into a helper function
bdev_ocssd_to_chunk_info_offset() and locate it next to
bdev_ocssd_to_disk_lba(). This will improve readability a little.

Besides, cache addr_shift first in bdev_ocssd_translate_lba() for
clarification.

Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: I4c078e2002638d90b000b97f9f7cda90938d02ca
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/5132
Community-CI: Broadcom CI
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Shuhei Matsumoto 2020-11-17 01:11:14 +09:00 committed by Tomasz Zawadzki
parent 74438fc588
commit ae3b179a53
1 changed files with 15 additions and 6 deletions
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21
module/bdev/nvme/bdev_ocssd.c
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@ -264,8 +264,8 @@ bdev_ocssd_translate_lba(struct ocssd_bdev *ocssd_bdev, uint64_t lba, uint64_t *
*
* which means that neighbouring zones are placed in a different group and parallel unit.
*/
*lbk = lba % geo->clba;
addr_shift = geo->clba;
*lbk = lba % addr_shift;
punit = range->begin + (lba / addr_shift) % ocssd_range_num_parallel_units(range);
@ -324,6 +324,18 @@ bdev_ocssd_to_disk_lba(struct ocssd_bdev *ocssd_bdev, uint64_t lba)
(grp << offsets->grp);
}
static uint64_t
bdev_ocssd_to_chunk_info_offset(struct ocssd_bdev *ocssd_bdev, uint64_t lba)
{
struct bdev_ocssd_ns *ocssd_ns = bdev_ocssd_get_ns_from_bdev(ocssd_bdev);
const struct spdk_ocssd_geometry_data *geo = &ocssd_ns->geometry;
uint64_t grp, pu, chk, lbk;
bdev_ocssd_translate_lba(ocssd_bdev, lba, &grp, &pu, &chk, &lbk);
return grp * geo->num_pu * geo->num_chk + pu * geo->num_chk + chk;
}
static bool
bdev_ocssd_lba_in_range(struct ocssd_bdev *ocssd_bdev, uint64_t lba)
{
@ -659,15 +671,12 @@ _bdev_ocssd_get_zone_info(struct spdk_bdev_io *bdev_io)
{
struct ocssd_bdev *ocssd_bdev = bdev_io->bdev->ctxt;
struct nvme_bdev *nvme_bdev = &ocssd_bdev->nvme_bdev;
struct bdev_ocssd_ns *ocssd_ns = bdev_ocssd_get_ns_from_bdev(ocssd_bdev);
const struct spdk_ocssd_geometry_data *geo = &ocssd_ns->geometry;
struct bdev_ocssd_io *ocdev_io = (struct bdev_ocssd_io *)bdev_io->driver_ctx;
uint64_t lba, grp, pu, chk, lbk, offset;
uint64_t lba, offset;
lba = bdev_io->u.zone_mgmt.zone_id + ocdev_io->zone_info.chunk_offset *
nvme_bdev->disk.zone_size;
bdev_ocssd_translate_lba(ocssd_bdev, lba, &grp, &pu, &chk, &lbk);
offset = grp * geo->num_pu * geo->num_chk + pu * geo->num_chk + chk;
offset = bdev_ocssd_to_chunk_info_offset(ocssd_bdev, lba);
return spdk_nvme_ctrlr_cmd_get_log_page(nvme_bdev->nvme_ns->ctrlr->ctrlr,
SPDK_OCSSD_LOG_CHUNK_INFO,