Merge 6.3-rc5 into driver-core-next

We need the fixes in here for testing, as well as the driver core
changes for documentation updates to build on.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

6 files changed, 22 insertions, 27 deletions

diff --git a/block/Kconfig b/block/Kconfig
index 5d9d9c84d516..941b2dca70db 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -204,9 +204,6 @@ config BLK_INLINE_ENCRYPTION_FALLBACK
 
 source "block/partitions/Kconfig"
 
-config BLOCK_COMPAT
-	def_bool COMPAT
-
 config BLK_MQ_PCI
 	def_bool PCI
 
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index 8a8d4441519c..d9ed3108c17a 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -2854,11 +2854,11 @@ bfq_setup_stable_merge(struct bfq_data *bfqd, struct bfq_queue *bfqq,
 {
 	int proc_ref = min(bfqq_process_refs(bfqq),
 			   bfqq_process_refs(stable_merge_bfqq));
-	struct bfq_queue *new_bfqq;
+	struct bfq_queue *new_bfqq = NULL;
 
-	if (idling_boosts_thr_without_issues(bfqd, bfqq) ||
-	    proc_ref == 0)
-		return NULL;
+	bfqq_data->stable_merge_bfqq = NULL;
+	if (idling_boosts_thr_without_issues(bfqd, bfqq) || proc_ref == 0)
+		goto out;
 
 	/* next function will take at least one ref */
 	new_bfqq = bfq_setup_merge(bfqq, stable_merge_bfqq);
@@ -2873,6 +2873,11 @@ bfq_setup_stable_merge(struct bfq_data *bfqd, struct bfq_queue *bfqq,
 			new_bfqq_data->stably_merged = true;
 		}
 	}
+
+out:
+	/* deschedule stable merge, because done or aborted here */
+	bfq_put_stable_ref(stable_merge_bfqq);
+
 	return new_bfqq;
 }
 
@@ -2933,11 +2938,6 @@ bfq_setup_cooperator(struct bfq_data *bfqd, struct bfq_queue *bfqq,
 			struct bfq_queue *stable_merge_bfqq =
 				bfqq_data->stable_merge_bfqq;
 
-			/* deschedule stable merge, because done or aborted here */
-			bfq_put_stable_ref(stable_merge_bfqq);
-
-			bfqq_data->stable_merge_bfqq = NULL;
-
 			return bfq_setup_stable_merge(bfqd, bfqq,
 						      stable_merge_bfqq,
 						      bfqq_data);
diff --git a/block/blk-core.c b/block/blk-core.c
index 9e5e0277a4d9..42926e6cb83c 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -959,16 +959,11 @@ again:
 	}
 }
 
-unsigned long bdev_start_io_acct(struct block_device *bdev,
-				 unsigned int sectors, enum req_op op,
+unsigned long bdev_start_io_acct(struct block_device *bdev, enum req_op op,
 				 unsigned long start_time)
 {
-	const int sgrp = op_stat_group(op);
-
 	part_stat_lock();
 	update_io_ticks(bdev, start_time, false);
-	part_stat_inc(bdev, ios[sgrp]);
-	part_stat_add(bdev, sectors[sgrp], sectors);
 	part_stat_local_inc(bdev, in_flight[op_is_write(op)]);
 	part_stat_unlock();
 
@@ -984,13 +979,12 @@ EXPORT_SYMBOL(bdev_start_io_acct);
  */
 unsigned long bio_start_io_acct(struct bio *bio)
 {
-	return bdev_start_io_acct(bio->bi_bdev, bio_sectors(bio),
-				  bio_op(bio), jiffies);
+	return bdev_start_io_acct(bio->bi_bdev, bio_op(bio), jiffies);
 }
 EXPORT_SYMBOL_GPL(bio_start_io_acct);
 
 void bdev_end_io_acct(struct block_device *bdev, enum req_op op,
-		      unsigned long start_time)
+		      unsigned int sectors, unsigned long start_time)
 {
 	const int sgrp = op_stat_group(op);
 	unsigned long now = READ_ONCE(jiffies);
@@ -998,6 +992,8 @@ void bdev_end_io_acct(struct block_device *bdev, enum req_op op,
 
 	part_stat_lock();
 	update_io_ticks(bdev, now, true);
+	part_stat_inc(bdev, ios[sgrp]);
+	part_stat_add(bdev, sectors[sgrp], sectors);
 	part_stat_add(bdev, nsecs[sgrp], jiffies_to_nsecs(duration));
 	part_stat_local_dec(bdev, in_flight[op_is_write(op)]);
 	part_stat_unlock();
@@ -1007,7 +1003,7 @@ EXPORT_SYMBOL(bdev_end_io_acct);
 void bio_end_io_acct_remapped(struct bio *bio, unsigned long start_time,
 			      struct block_device *orig_bdev)
 {
-	bdev_end_io_acct(orig_bdev, bio_op(bio), start_time);
+	bdev_end_io_acct(orig_bdev, bio_op(bio), bio_sectors(bio), start_time);
 }
 EXPORT_SYMBOL_GPL(bio_end_io_acct_remapped);
 
diff --git a/block/blk-mq.c b/block/blk-mq.c
index d0cb2ef18fe2..cf1a39adf9a5 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2725,6 +2725,7 @@ static void blk_mq_dispatch_plug_list(struct blk_plug *plug, bool from_sched)
 	struct blk_mq_hw_ctx *this_hctx = NULL;
 	struct blk_mq_ctx *this_ctx = NULL;
 	struct request *requeue_list = NULL;
+	struct request **requeue_lastp = &requeue_list;
 	unsigned int depth = 0;
 	LIST_HEAD(list);
 
@@ -2735,10 +2736,10 @@ static void blk_mq_dispatch_plug_list(struct blk_plug *plug, bool from_sched)
 			this_hctx = rq->mq_hctx;
 			this_ctx = rq->mq_ctx;
 		} else if (this_hctx != rq->mq_hctx || this_ctx != rq->mq_ctx) {
-			rq_list_add(&requeue_list, rq);
+			rq_list_add_tail(&requeue_lastp, rq);
 			continue;
 		}
-		list_add_tail(&rq->queuelist, &list);
+		list_add(&rq->queuelist, &list);
 		depth++;
 	} while (!rq_list_empty(plug->mq_list));
 
diff --git a/block/blk-mq.h b/block/blk-mq.h
index ef59fee62780..a7482d2cc82e 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -378,12 +378,13 @@ static inline bool hctx_may_queue(struct blk_mq_hw_ctx *hctx,
 #define __blk_mq_run_dispatch_ops(q, check_sleep, dispatch_ops)	\
 do {								\
 	if ((q)->tag_set->flags & BLK_MQ_F_BLOCKING) {		\
+		struct blk_mq_tag_set *__tag_set = (q)->tag_set; \
 		int srcu_idx;					\
 								\
 		might_sleep_if(check_sleep);			\
-		srcu_idx = srcu_read_lock((q)->tag_set->srcu);	\
+		srcu_idx = srcu_read_lock(__tag_set->srcu);	\
 		(dispatch_ops);					\
-		srcu_read_unlock((q)->tag_set->srcu, srcu_idx);	\
+		srcu_read_unlock(__tag_set->srcu, srcu_idx);	\
 	} else {						\
 		rcu_read_lock();				\
 		(dispatch_ops);					\
diff --git a/block/genhd.c b/block/genhd.c
index af7208a37c53..618f495ae67f 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -385,7 +385,7 @@ int disk_scan_partitions(struct gendisk *disk, fmode_t mode)
 	if (IS_ERR(bdev))
 		ret =  PTR_ERR(bdev);
 	else
-		blkdev_put(bdev, mode);
+		blkdev_put(bdev, mode & ~FMODE_EXCL);
 
 	if (!(mode & FMODE_EXCL))
 		bd_abort_claiming(disk->part0, disk_scan_partitions);