diff --git a/MAINTAINERS b/MAINTAINERS
index 207a65905f5e9dea3c1ef4562fd7def94fc213bd..f26270a41878cd352dfe39c89f1ad115763a563d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3536,7 +3536,7 @@ F:	Documentation/filesystems/befs.rst
 F:	fs/befs/
 
 BFQ I/O SCHEDULER
-M:	Paolo Valente <paolo.valente@linaro.org>
+M:	Paolo Valente <paolo.valente@unimore.it>
 M:	Jens Axboe <axboe@kernel.dk>
 L:	linux-block@vger.kernel.org
 S:	Maintained
diff --git a/block/blk-core.c b/block/blk-core.c
index 00c74330fa92c221422a629361607068a65eda99..1da77e7d62894651d3e307dbd1be1930983baad8 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -520,7 +520,7 @@ static inline int bio_check_eod(struct bio *bio)
 	sector_t maxsector = bdev_nr_sectors(bio->bi_bdev);
 	unsigned int nr_sectors = bio_sectors(bio);
 
-	if (nr_sectors && maxsector &&
+	if (nr_sectors &&
 	    (nr_sectors > maxsector ||
 	     bio->bi_iter.bi_sector > maxsector - nr_sectors)) {
 		pr_info_ratelimited("%s: attempt to access beyond end of device\n"
diff --git a/block/blk-map.c b/block/blk-map.c
index 04c55f1c492eb144b332139478b5cc390dbbf075..46eed2e627c363a4ab6a3797b538380be6a45ef6 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -248,7 +248,7 @@ static struct bio *blk_rq_map_bio_alloc(struct request *rq,
 {
 	struct bio *bio;
 
-	if (rq->cmd_flags & REQ_ALLOC_CACHE) {
+	if (rq->cmd_flags & REQ_ALLOC_CACHE && (nr_vecs <= BIO_INLINE_VECS)) {
 		bio = bio_alloc_bioset(NULL, nr_vecs, rq->cmd_flags, gfp_mask,
 					&fs_bio_set);
 		if (!bio)
diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index d6af9d431dc631989dce6709971d1fc042e89dc1..dfd81cab57888b33a39b7b8b8e7d8d1c3bae0506 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -39,16 +39,20 @@ void __blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx)
 {
 	unsigned int users;
 
+	/*
+	 * calling test_bit() prior to test_and_set_bit() is intentional,
+	 * it avoids dirtying the cacheline if the queue is already active.
+	 */
 	if (blk_mq_is_shared_tags(hctx->flags)) {
 		struct request_queue *q = hctx->queue;
 
-		if (test_bit(QUEUE_FLAG_HCTX_ACTIVE, &q->queue_flags))
+		if (test_bit(QUEUE_FLAG_HCTX_ACTIVE, &q->queue_flags) ||
+		    test_and_set_bit(QUEUE_FLAG_HCTX_ACTIVE, &q->queue_flags))
 			return;
-		set_bit(QUEUE_FLAG_HCTX_ACTIVE, &q->queue_flags);
 	} else {
-		if (test_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state))
+		if (test_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state) ||
+		    test_and_set_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state))
 			return;
-		set_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state);
 	}
 
 	users = atomic_inc_return(&hctx->tags->active_queues);
diff --git a/block/blk-wbt.c b/block/blk-wbt.c
index e49a4868453276744e02561c6bfef1dfe68aa2c2..9ec2a2f1eda3882b8d174b90c2e5f14ae5d07679 100644
--- a/block/blk-wbt.c
+++ b/block/blk-wbt.c
@@ -730,14 +730,16 @@ void wbt_enable_default(struct gendisk *disk)
 {
 	struct request_queue *q = disk->queue;
 	struct rq_qos *rqos;
-	bool disable_flag = q->elevator &&
-		    test_bit(ELEVATOR_FLAG_DISABLE_WBT, &q->elevator->flags);
+	bool enable = IS_ENABLED(CONFIG_BLK_WBT_MQ);
+
+	if (q->elevator &&
+	    test_bit(ELEVATOR_FLAG_DISABLE_WBT, &q->elevator->flags))
+		enable = false;
 
 	/* Throttling already enabled? */
 	rqos = wbt_rq_qos(q);
 	if (rqos) {
-		if (!disable_flag &&
-		    RQWB(rqos)->enable_state == WBT_STATE_OFF_DEFAULT)
+		if (enable && RQWB(rqos)->enable_state == WBT_STATE_OFF_DEFAULT)
 			RQWB(rqos)->enable_state = WBT_STATE_ON_DEFAULT;
 		return;
 	}
@@ -746,7 +748,7 @@ void wbt_enable_default(struct gendisk *disk)
 	if (!blk_queue_registered(q))
 		return;
 
-	if (queue_is_mq(q) && !disable_flag)
+	if (queue_is_mq(q) && enable)
 		wbt_init(disk);
 }
 EXPORT_SYMBOL_GPL(wbt_enable_default);
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 32244582fdb08352caf0c54202b0a38d803ba73b..492f319ebdf37ad838dacbb5237f1a804b243840 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3424,6 +3424,8 @@ static const struct pci_device_id nvme_id_table[] = {
 		.driver_data = NVME_QUIRK_BOGUS_NID, },
 	{ PCI_DEVICE(0x1e4B, 0x1202),   /* MAXIO MAP1202 */
 		.driver_data = NVME_QUIRK_BOGUS_NID, },
+	{ PCI_DEVICE(0x1e4B, 0x1602),   /* MAXIO MAP1602 */
+		.driver_data = NVME_QUIRK_BOGUS_NID, },
 	{ PCI_DEVICE(0x1cc1, 0x5350),   /* ADATA XPG GAMMIX S50 */
 		.driver_data = NVME_QUIRK_BOGUS_NID, },
 	{ PCI_DEVICE(0x1dbe, 0x5236),   /* ADATA XPG GAMMIX S70 */