Merge tag 'for-5.13/block-2021-04-27' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:
 "Pretty quiet round this time, which is nice. In detail:

   - Series revamping bounce buffer support (Christoph)

   - Dead code removal (Christoph, Bart)

   - Partition iteration revamp, now using xarray (Christoph)

   - Passthrough request scheduler improvements (Lin)

   - Series of BFQ improvements (Paolo)

   - Fix ioprio task iteration (Peter)

   - Various little tweaks and fixes (Tejun, Saravanan, Bhaskar, Max,
     Nikolay)"

* tag 'for-5.13/block-2021-04-27' of git://git.kernel.dk/linux-block: (41 commits)
  blk-iocost: don't ignore vrate_min on QD contention
  blk-mq: Fix spurious debugfs directory creation during initialization
  bfq/mq-deadline: remove redundant check for passthrough request
  blk-mq: bypass IO scheduler's limit_depth for passthrough request
  block: Remove an obsolete comment from sg_io()
  block: move bio_list_copy_data to pktcdvd
  block: remove zero_fill_bio_iter
  block: add queue_to_disk() to get gendisk from request_queue
  block: remove an incorrect check from blk_rq_append_bio
  block: initialize ret in bdev_disk_changed
  block: Fix sys_ioprio_set(.which=IOPRIO_WHO_PGRP) task iteration
  block: remove disk_part_iter
  block: simplify diskstats_show
  block: simplify show_partition
  block: simplify printk_all_partitions
  block: simplify partition_overlaps
  block: simplify partition removal
  block: take bd_mutex around delete_partitions in del_gendisk
  block: refactor blk_drop_partitions
  block: move more syncing and invalidation to delete_partition
  ...

1 files changed, 20 insertions, 26 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 158aefae1030..c1278f8f4f1f 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -272,6 +272,12 @@ static inline bool bio_is_passthrough(struct bio *bio)
 	return blk_op_is_scsi(op) || blk_op_is_private(op);
 }
 
+static inline bool blk_op_is_passthrough(unsigned int op)
+{
+	return (blk_op_is_scsi(op & REQ_OP_MASK) ||
+			blk_op_is_private(op & REQ_OP_MASK));
+}
+
 static inline unsigned short req_get_ioprio(struct request *req)
 {
 	return req->ioprio;
@@ -311,8 +317,17 @@ enum blk_zoned_model {
 	BLK_ZONED_HM,		/* Host-managed zoned block device */
 };
 
+/*
+ * BLK_BOUNCE_NONE:	never bounce (default)
+ * BLK_BOUNCE_HIGH:	bounce all highmem pages
+ */
+enum blk_bounce {
+	BLK_BOUNCE_NONE,
+	BLK_BOUNCE_HIGH,
+};
+
 struct queue_limits {
-	unsigned long		bounce_pfn;
+	enum blk_bounce		bounce;
 	unsigned long		seg_boundary_mask;
 	unsigned long		virt_boundary_mask;
 
@@ -434,11 +449,6 @@ struct request_queue {
 	 */
 	int			id;
 
-	/*
-	 * queue needs bounce pages for pages above this limit
-	 */
-	gfp_t			bounce_gfp;
-
 	spinlock_t		queue_lock;
 
 	/*
@@ -683,6 +693,8 @@ static inline bool blk_account_rq(struct request *rq)
 	dma_map_page_attrs(dev, (bv)->bv_page, (bv)->bv_offset, (bv)->bv_len, \
 	(dir), (attrs))
 
+#define queue_to_disk(q)	(dev_to_disk(kobj_to_dev((q)->kobj.parent)))
+
 static inline bool queue_is_mq(struct request_queue *q)
 {
 	return q->mq_ops;
@@ -838,24 +850,6 @@ static inline unsigned int blk_queue_depth(struct request_queue *q)
 	return q->nr_requests;
 }
 
-extern unsigned long blk_max_low_pfn, blk_max_pfn;
-
-/*
- * standard bounce addresses:
- *
- * BLK_BOUNCE_HIGH	: bounce all highmem pages
- * BLK_BOUNCE_ANY	: don't bounce anything
- * BLK_BOUNCE_ISA	: bounce pages above ISA DMA boundary
- */
-
-#if BITS_PER_LONG == 32
-#define BLK_BOUNCE_HIGH		((u64)blk_max_low_pfn << PAGE_SHIFT)
-#else
-#define BLK_BOUNCE_HIGH		-1ULL
-#endif
-#define BLK_BOUNCE_ANY		(-1ULL)
-#define BLK_BOUNCE_ISA		(DMA_BIT_MASK(24))
-
 /*
  * default timeout for SG_IO if none specified
  */
@@ -921,7 +915,7 @@ extern int blk_rq_prep_clone(struct request *rq, struct request *rq_src,
 extern void blk_rq_unprep_clone(struct request *rq);
 extern blk_status_t blk_insert_cloned_request(struct request_queue *q,
 				     struct request *rq);
-extern int blk_rq_append_bio(struct request *rq, struct bio **bio);
+int blk_rq_append_bio(struct request *rq, struct bio *bio);
 extern void blk_queue_split(struct bio **);
 extern int scsi_verify_blk_ioctl(struct block_device *, unsigned int);
 extern int scsi_cmd_blk_ioctl(struct block_device *, fmode_t,
@@ -1139,7 +1133,7 @@ extern void blk_abort_request(struct request *);
  * Access functions for manipulating queue properties
  */
 extern void blk_cleanup_queue(struct request_queue *);
-extern void blk_queue_bounce_limit(struct request_queue *, u64);
+void blk_queue_bounce_limit(struct request_queue *q, enum blk_bounce limit);
 extern void blk_queue_max_hw_sectors(struct request_queue *, unsigned int);
 extern void blk_queue_chunk_sectors(struct request_queue *, unsigned int);
 extern void blk_queue_max_segments(struct request_queue *, unsigned short);