[PATCH] null_blk: Fix REQ_OP_ZONE_CLOSE handling

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In order to match ZBC defined behavior, closing an empty zone must
result in the "empty" zone condition instead of the "closed" condition.

Fixes: da644b2cc1a4 ("null_blk: add zone open, close, and finish support")
Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx>
---
 drivers/block/null_blk_zoned.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/block/null_blk_zoned.c b/drivers/block/null_blk_zoned.c
index d4d88b581822..5cf49d9db95e 100644
--- a/drivers/block/null_blk_zoned.c
+++ b/drivers/block/null_blk_zoned.c
@@ -186,7 +186,10 @@ static blk_status_t null_zone_mgmt(struct nullb_cmd *cmd, enum req_opf op,
 		if (zone->cond == BLK_ZONE_COND_FULL)
 			return BLK_STS_IOERR;
 
-		zone->cond = BLK_ZONE_COND_CLOSED;
+		if (zone->wp == zone->start)
+			zone->cond = BLK_ZONE_COND_EMPTY;
+		else
+			zone->cond = BLK_ZONE_COND_CLOSED;
 		break;
 	case REQ_OP_ZONE_FINISH:
 		if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
-- 
2.24.1




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