Merge tag 'block-5.17-2022-01-21' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Various little minor fixes that should go into this release:

   - Fix issue with cloned bios and IO accounting (Christoph)

   - Remove redundant assignments (Colin, GuoYong)

   - Fix an issue with the mq-deadline async_depth sysfs interface (me)

   - Fix brd module loading race (Tetsuo)

   - Shared tag map wakeup fix (Laibin)

   - End of bdev read fix (OGAWA)

   - srcu leak fix (Ming)"

* tag 'block-5.17-2022-01-21' of git://git.kernel.dk/linux-block:
  block: fix async_depth sysfs interface for mq-deadline
  block: Fix wrong offset in bio_truncate()
  block: assign bi_bdev for cloned bios in blk_rq_prep_clone
  block: cleanup q->srcu
  block: Remove unnecessary variable assignment
  brd: remove brd_devices_mutex mutex
  aoe: remove redundant assignment on variable n
  loop: remove redundant initialization of pointer node
  blk-mq: fix tag_get wait task can't be awakened

1 files changed, 22 insertions, 3 deletions

diff --git a/lib/sbitmap.c b/lib/sbitmap.c
index 2709ab825499..6220fa67fb7e 100644
--- a/lib/sbitmap.c
+++ b/lib/sbitmap.c
@@ -457,10 +457,9 @@ int sbitmap_queue_init_node(struct sbitmap_queue *sbq, unsigned int depth,
 }
 EXPORT_SYMBOL_GPL(sbitmap_queue_init_node);
 
-static void sbitmap_queue_update_wake_batch(struct sbitmap_queue *sbq,
-					    unsigned int depth)
+static inline void __sbitmap_queue_update_wake_batch(struct sbitmap_queue *sbq,
+					    unsigned int wake_batch)
 {
-	unsigned int wake_batch = sbq_calc_wake_batch(sbq, depth);
 	int i;
 
 	if (sbq->wake_batch != wake_batch) {
@@ -476,6 +475,26 @@ static void sbitmap_queue_update_wake_batch(struct sbitmap_queue *sbq,
 	}
 }
 
+static void sbitmap_queue_update_wake_batch(struct sbitmap_queue *sbq,
+					    unsigned int depth)
+{
+	unsigned int wake_batch;
+
+	wake_batch = sbq_calc_wake_batch(sbq, depth);
+	__sbitmap_queue_update_wake_batch(sbq, wake_batch);
+}
+
+void sbitmap_queue_recalculate_wake_batch(struct sbitmap_queue *sbq,
+					    unsigned int users)
+{
+	unsigned int wake_batch;
+
+	wake_batch = clamp_val((sbq->sb.depth + users - 1) /
+			users, 4, SBQ_WAKE_BATCH);
+	__sbitmap_queue_update_wake_batch(sbq, wake_batch);
+}
+EXPORT_SYMBOL_GPL(sbitmap_queue_recalculate_wake_batch);
+
 void sbitmap_queue_resize(struct sbitmap_queue *sbq, unsigned int depth)
 {
 	sbitmap_queue_update_wake_batch(sbq, depth);