This patch implements newly introduced zone reset all operation for null_blk driver.
Signed-off-by: Chaitanya Kulkarni <[email protected]> --- drivers/block/null_blk_main.c | 3 +++ drivers/block/null_blk_zoned.c | 28 ++++++++++++++++++++++------ 2 files changed, 25 insertions(+), 6 deletions(-) diff --git a/drivers/block/null_blk_main.c b/drivers/block/null_blk_main.c index 99328ded60d1..99c56d72ff78 100644 --- a/drivers/block/null_blk_main.c +++ b/drivers/block/null_blk_main.c @@ -1214,6 +1214,8 @@ static blk_status_t null_handle_cmd(struct nullb_cmd *cmd) null_zone_write(cmd, sector, nr_sectors); else if (op == REQ_OP_ZONE_RESET) null_zone_reset(cmd, sector); + else if (op == REQ_OP_ZONE_RESET_ALL) + null_zone_reset(cmd, 0); } out: /* Complete IO by inline, softirq or timer */ @@ -1688,6 +1690,7 @@ static int null_add_dev(struct nullb_device *dev) blk_queue_chunk_sectors(nullb->q, dev->zone_size_sects); nullb->q->limits.zoned = BLK_ZONED_HM; + blk_queue_flag_set(QUEUE_FLAG_ZONE_RESETALL, nullb->q); } nullb->q->queuedata = nullb; diff --git a/drivers/block/null_blk_zoned.c b/drivers/block/null_blk_zoned.c index cb28d93f2bd1..8c7f5bf81975 100644 --- a/drivers/block/null_blk_zoned.c +++ b/drivers/block/null_blk_zoned.c @@ -125,12 +125,28 @@ void null_zone_reset(struct nullb_cmd *cmd, sector_t sector) struct nullb_device *dev = cmd->nq->dev; unsigned int zno = null_zone_no(dev, sector); struct blk_zone *zone = &dev->zones[zno]; + size_t i; + + switch (req_op(cmd->rq)) { + case REQ_OP_ZONE_RESET_ALL: + for (i = 0; i < dev->nr_zones; i++) { + if (zone[i].type == BLK_ZONE_TYPE_CONVENTIONAL) + continue; + zone[i].cond = BLK_ZONE_COND_EMPTY; + zone[i].wp = zone[i].start; + } + break; + case REQ_OP_ZONE_RESET: + if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) { + cmd->error = BLK_STS_IOERR; + return; + } - if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) { - cmd->error = BLK_STS_IOERR; - return; + zone->cond = BLK_ZONE_COND_EMPTY; + zone->wp = zone->start; + break; + default: + cmd->error = BLK_STS_NOTSUPP; + break; } - - zone->cond = BLK_ZONE_COND_EMPTY; - zone->wp = zone->start; } -- 2.17.0
