diff options
Diffstat (limited to 'drivers/block/null_blk_zoned.c')
| -rw-r--r-- | drivers/block/null_blk_zoned.c | 69 |
1 files changed, 43 insertions, 26 deletions
diff --git a/drivers/block/null_blk_zoned.c b/drivers/block/null_blk_zoned.c index fa0cc70f05e6..7d94f2d47a6a 100644 --- a/drivers/block/null_blk_zoned.c +++ b/drivers/block/null_blk_zoned.c @@ -220,29 +220,34 @@ static void null_close_first_imp_zone(struct nullb_device *dev) } } -static bool null_can_set_active(struct nullb_device *dev) +static blk_status_t null_check_active(struct nullb_device *dev) { if (!dev->zone_max_active) - return true; + return BLK_STS_OK; + + if (dev->nr_zones_exp_open + dev->nr_zones_imp_open + + dev->nr_zones_closed < dev->zone_max_active) + return BLK_STS_OK; - return dev->nr_zones_exp_open + dev->nr_zones_imp_open + - dev->nr_zones_closed < dev->zone_max_active; + return BLK_STS_ZONE_ACTIVE_RESOURCE; } -static bool null_can_open(struct nullb_device *dev) +static blk_status_t null_check_open(struct nullb_device *dev) { if (!dev->zone_max_open) - return true; + return BLK_STS_OK; if (dev->nr_zones_exp_open + dev->nr_zones_imp_open < dev->zone_max_open) - return true; + return BLK_STS_OK; - if (dev->nr_zones_imp_open && null_can_set_active(dev)) { - null_close_first_imp_zone(dev); - return true; + if (dev->nr_zones_imp_open) { + if (null_check_active(dev) == BLK_STS_OK) { + null_close_first_imp_zone(dev); + return BLK_STS_OK; + } } - return false; + return BLK_STS_ZONE_OPEN_RESOURCE; } /* @@ -258,19 +263,22 @@ static bool null_can_open(struct nullb_device *dev) * it is not certain that closing an implicit open zone will allow a new zone * to be opened, since we might already be at the active limit capacity. */ -static bool null_has_zone_resources(struct nullb_device *dev, struct blk_zone *zone) +static blk_status_t null_check_zone_resources(struct nullb_device *dev, struct blk_zone *zone) { + blk_status_t ret; + switch (zone->cond) { case BLK_ZONE_COND_EMPTY: - if (!null_can_set_active(dev)) - return false; + ret = null_check_active(dev); + if (ret != BLK_STS_OK) + return ret; fallthrough; case BLK_ZONE_COND_CLOSED: - return null_can_open(dev); + return null_check_open(dev); default: /* Should never be called for other states */ WARN_ON(1); - return false; + return BLK_STS_IOERR; } } @@ -293,8 +301,9 @@ static blk_status_t null_zone_write(struct nullb_cmd *cmd, sector_t sector, return BLK_STS_IOERR; case BLK_ZONE_COND_EMPTY: case BLK_ZONE_COND_CLOSED: - if (!null_has_zone_resources(dev, zone)) - return BLK_STS_IOERR; + ret = null_check_zone_resources(dev, zone); + if (ret != BLK_STS_OK) + return ret; break; case BLK_ZONE_COND_IMP_OPEN: case BLK_ZONE_COND_EXP_OPEN: @@ -349,6 +358,8 @@ static blk_status_t null_zone_write(struct nullb_cmd *cmd, sector_t sector, static blk_status_t null_open_zone(struct nullb_device *dev, struct blk_zone *zone) { + blk_status_t ret; + if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) return BLK_STS_IOERR; @@ -357,15 +368,17 @@ static blk_status_t null_open_zone(struct nullb_device *dev, struct blk_zone *zo /* open operation on exp open is not an error */ return BLK_STS_OK; case BLK_ZONE_COND_EMPTY: - if (!null_has_zone_resources(dev, zone)) - return BLK_STS_IOERR; + ret = null_check_zone_resources(dev, zone); + if (ret != BLK_STS_OK) + return ret; break; case BLK_ZONE_COND_IMP_OPEN: dev->nr_zones_imp_open--; break; case BLK_ZONE_COND_CLOSED: - if (!null_has_zone_resources(dev, zone)) - return BLK_STS_IOERR; + ret = null_check_zone_resources(dev, zone); + if (ret != BLK_STS_OK) + return ret; dev->nr_zones_closed--; break; case BLK_ZONE_COND_FULL: @@ -381,6 +394,8 @@ static blk_status_t null_open_zone(struct nullb_device *dev, struct blk_zone *zo static blk_status_t null_finish_zone(struct nullb_device *dev, struct blk_zone *zone) { + blk_status_t ret; + if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) return BLK_STS_IOERR; @@ -389,8 +404,9 @@ static blk_status_t null_finish_zone(struct nullb_device *dev, struct blk_zone * /* finish operation on full is not an error */ return BLK_STS_OK; case BLK_ZONE_COND_EMPTY: - if (!null_has_zone_resources(dev, zone)) - return BLK_STS_IOERR; + ret = null_check_zone_resources(dev, zone); + if (ret != BLK_STS_OK) + return ret; break; case BLK_ZONE_COND_IMP_OPEN: dev->nr_zones_imp_open--; @@ -399,8 +415,9 @@ static blk_status_t null_finish_zone(struct nullb_device *dev, struct blk_zone * dev->nr_zones_exp_open--; break; case BLK_ZONE_COND_CLOSED: - if (!null_has_zone_resources(dev, zone)) - return BLK_STS_IOERR; + ret = null_check_zone_resources(dev, zone); + if (ret != BLK_STS_OK) + return ret; dev->nr_zones_closed--; break; default: |