Merge tag 'block-5.10-2020-10-24' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - NVMe pull request from Christoph
     - rdma error handling fixes (Chao Leng)
     - fc error handling and reconnect fixes (James Smart)
     - fix the qid displace when tracing ioctl command (Keith Busch)
     - don't use BLK_MQ_REQ_NOWAIT for passthru (Chaitanya Kulkarni)
     - fix MTDT for passthru (Logan Gunthorpe)
     - blacklist Write Same on more devices (Kai-Heng Feng)
     - fix an uninitialized work struct (zhenwei pi)"

 - lightnvm out-of-bounds fix (Colin)

 - SG allocation leak fix (Doug)

 - rnbd fixes (Gioh, Guoqing, Jack)

 - zone error translation fixes (Keith)

 - kerneldoc markup fix (Mauro)

 - zram lockdep fix (Peter)

 - Kill unused io_context members (Yufen)

 - NUMA memory allocation cleanup (Xianting)

 - NBD config wakeup fix (Xiubo)

* tag 'block-5.10-2020-10-24' of git://git.kernel.dk/linux-block: (27 commits)
  block: blk-mq: fix a kernel-doc markup
  nvme-fc: shorten reconnect delay if possible for FC
  nvme-fc: wait for queues to freeze before calling update_hr_hw_queues
  nvme-fc: fix error loop in create_hw_io_queues
  nvme-fc: fix io timeout to abort I/O
  null_blk: use zone status for max active/open
  nvmet: don't use BLK_MQ_REQ_NOWAIT for passthru
  nvmet: cleanup nvmet_passthru_map_sg()
  nvmet: limit passthru MTDS by BIO_MAX_PAGES
  nvmet: fix uninitialized work for zero kato
  nvme-pci: disable Write Zeroes on Sandisk Skyhawk
  nvme: use queuedata for nvme_req_qid
  nvme-rdma: fix crash due to incorrect cqe
  nvme-rdma: fix crash when connect rejected
  block: remove unused members for io_context
  blk-mq: remove the calling of local_memory_node()
  zram: Fix __zram_bvec_{read,write}() locking order
  skd_main: remove unused including <linux/version.h>
  sgl_alloc_order: fix memory leak
  lightnvm: fix out-of-bounds write to array devices->info[]
  ...

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: