[PATCH 13/14] block: remove unused queue limits API

[Christoph Hellwig <hch@lst.de>]

Remove all APIs that are unused now that sd and sr have been converted
to the atomic queue limits API.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
---
 block/blk-settings.c   | 190 -----------------------------------------
 include/linux/blkdev.h |  24 ------
 2 files changed, 214 deletions(-)

diff --git a/block/blk-settings.c b/block/blk-settings.c
index a49abdb3554834..0b038729608f4b 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -293,24 +293,6 @@ int queue_limits_set(struct request_queue *q, struct queue_limits *lim)
 }
 EXPORT_SYMBOL_GPL(queue_limits_set);
 
-/**
- * blk_queue_chunk_sectors - set size of the chunk for this queue
- * @q:  the request queue for the device
- * @chunk_sectors:  chunk sectors in the usual 512b unit
- *
- * Description:
- *    If a driver doesn't want IOs to cross a given chunk size, it can set
- *    this limit and prevent merging across chunks. Note that the block layer
- *    must accept a page worth of data at any offset. So if the crossing of
- *    chunks is a hard limitation in the driver, it must still be prepared
- *    to split single page bios.
- **/
-void blk_queue_chunk_sectors(struct request_queue *q, unsigned int chunk_sectors)
-{
-	q->limits.chunk_sectors = chunk_sectors;
-}
-EXPORT_SYMBOL(blk_queue_chunk_sectors);
-
 /**
  * blk_queue_max_discard_sectors - set max sectors for a single discard
  * @q:  the request queue for the device
@@ -352,139 +334,6 @@ void blk_queue_max_write_zeroes_sectors(struct request_queue *q,
 }
 EXPORT_SYMBOL(blk_queue_max_write_zeroes_sectors);
 
-/**
- * blk_queue_max_zone_append_sectors - set max sectors for a single zone append
- * @q:  the request queue for the device
- * @max_zone_append_sectors: maximum number of sectors to write per command
- *
- * Sets the maximum number of sectors allowed for zone append commands. If
- * Specifying 0 for @max_zone_append_sectors indicates that the queue does
- * not natively support zone append operations and that the block layer must
- * emulate these operations using regular writes.
- **/
-void blk_queue_max_zone_append_sectors(struct request_queue *q,
-		unsigned int max_zone_append_sectors)
-{
-	unsigned int max_sectors = 0;
-
-	if (WARN_ON(!blk_queue_is_zoned(q)))
-		return;
-
-	if (max_zone_append_sectors) {
-		max_sectors = min(q->limits.max_hw_sectors,
-				  max_zone_append_sectors);
-		max_sectors = min(q->limits.chunk_sectors, max_sectors);
-
-		/*
-		 * Signal eventual driver bugs resulting in the max_zone_append
-		 * sectors limit being 0 due to the chunk_sectors limit (zone
-		 * size) not set or the max_hw_sectors limit not set.
-		 */
-		WARN_ON_ONCE(!max_sectors);
-	}
-
-	q->limits.max_zone_append_sectors = max_sectors;
-}
-EXPORT_SYMBOL_GPL(blk_queue_max_zone_append_sectors);
-
-/**
- * blk_queue_logical_block_size - set logical block size for the queue
- * @q:  the request queue for the device
- * @size:  the logical block size, in bytes
- *
- * Description:
- *   This should be set to the lowest possible block size that the
- *   storage device can address.  The default of 512 covers most
- *   hardware.
- **/
-void blk_queue_logical_block_size(struct request_queue *q, unsigned int size)
-{
-	struct queue_limits *limits = &q->limits;
-
-	limits->logical_block_size = size;
-
-	if (limits->discard_granularity < limits->logical_block_size)
-		limits->discard_granularity = limits->logical_block_size;
-
-	if (limits->physical_block_size < size)
-		limits->physical_block_size = size;
-
-	if (limits->io_min < limits->physical_block_size)
-		limits->io_min = limits->physical_block_size;
-
-	limits->max_hw_sectors =
-		round_down(limits->max_hw_sectors, size >> SECTOR_SHIFT);
-	limits->max_sectors =
-		round_down(limits->max_sectors, size >> SECTOR_SHIFT);
-}
-EXPORT_SYMBOL(blk_queue_logical_block_size);
-
-/**
- * blk_queue_physical_block_size - set physical block size for the queue
- * @q:  the request queue for the device
- * @size:  the physical block size, in bytes
- *
- * Description:
- *   This should be set to the lowest possible sector size that the
- *   hardware can operate on without reverting to read-modify-write
- *   operations.
- */
-void blk_queue_physical_block_size(struct request_queue *q, unsigned int size)
-{
-	q->limits.physical_block_size = size;
-
-	if (q->limits.physical_block_size < q->limits.logical_block_size)
-		q->limits.physical_block_size = q->limits.logical_block_size;
-
-	if (q->limits.discard_granularity < q->limits.physical_block_size)
-		q->limits.discard_granularity = q->limits.physical_block_size;
-
-	if (q->limits.io_min < q->limits.physical_block_size)
-		q->limits.io_min = q->limits.physical_block_size;
-}
-EXPORT_SYMBOL(blk_queue_physical_block_size);
-
-/**
- * blk_queue_zone_write_granularity - set zone write granularity for the queue
- * @q:  the request queue for the zoned device
- * @size:  the zone write granularity size, in bytes
- *
- * Description:
- *   This should be set to the lowest possible size allowing to write in
- *   sequential zones of a zoned block device.
- */
-void blk_queue_zone_write_granularity(struct request_queue *q,
-				      unsigned int size)
-{
-	if (WARN_ON_ONCE(!blk_queue_is_zoned(q)))
-		return;
-
-	q->limits.zone_write_granularity = size;
-
-	if (q->limits.zone_write_granularity < q->limits.logical_block_size)
-		q->limits.zone_write_granularity = q->limits.logical_block_size;
-}
-EXPORT_SYMBOL_GPL(blk_queue_zone_write_granularity);
-
-/**
- * blk_queue_alignment_offset - set physical block alignment offset
- * @q:	the request queue for the device
- * @offset: alignment offset in bytes
- *
- * Description:
- *   Some devices are naturally misaligned to compensate for things like
- *   the legacy DOS partition table 63-sector offset.  Low-level drivers
- *   should call this function for devices whose first sector is not
- *   naturally aligned.
- */
-void blk_queue_alignment_offset(struct request_queue *q, unsigned int offset)
-{
-	q->limits.alignment_offset =
-		offset & (q->limits.physical_block_size - 1);
-	q->limits.misaligned = 0;
-}
-EXPORT_SYMBOL(blk_queue_alignment_offset);
-
 void disk_update_readahead(struct gendisk *disk)
 {
 	blk_apply_bdi_limits(disk->bdi, &disk->queue->limits);
@@ -514,26 +363,6 @@ void blk_limits_io_min(struct queue_limits *limits, unsigned int min)
 }
 EXPORT_SYMBOL(blk_limits_io_min);
 
-/**
- * blk_queue_io_min - set minimum request size for the queue
- * @q:	the request queue for the device
- * @min:  smallest I/O size in bytes
- *
- * Description:
- *   Storage devices may report a granularity or preferred minimum I/O
- *   size which is the smallest request the device can perform without
- *   incurring a performance penalty.  For disk drives this is often the
- *   physical block size.  For RAID arrays it is often the stripe chunk
- *   size.  A properly aligned multiple of minimum_io_size is the
- *   preferred request size for workloads where a high number of I/O
- *   operations is desired.
- */
-void blk_queue_io_min(struct request_queue *q, unsigned int min)
-{
-	blk_limits_io_min(&q->limits, min);
-}
-EXPORT_SYMBOL(blk_queue_io_min);
-
 /**
  * blk_limits_io_opt - set optimal request size for a device
  * @limits: the queue limits
@@ -841,25 +670,6 @@ void blk_queue_write_cache(struct request_queue *q, bool wc, bool fua)
 }
 EXPORT_SYMBOL_GPL(blk_queue_write_cache);
 
-/**
- * disk_set_zoned - inidicate a zoned device
- * @disk:	gendisk to configure
- */
-void disk_set_zoned(struct gendisk *disk)
-{
-	struct request_queue *q = disk->queue;
-
-	WARN_ON_ONCE(!IS_ENABLED(CONFIG_BLK_DEV_ZONED));
-
-	/*
-	 * Set the zone write granularity to the device logical block
-	 * size by default. The driver can change this value if needed.
-	 */
-	q->limits.zoned = true;
-	blk_queue_zone_write_granularity(q, queue_logical_block_size(q));
-}
-EXPORT_SYMBOL_GPL(disk_set_zoned);
-
 int bdev_alignment_offset(struct block_device *bdev)
 {
 	struct request_queue *q = bdev_get_queue(bdev);
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 24c36929920b76..ad995e7a769811 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -332,8 +332,6 @@ struct queue_limits {
 typedef int (*report_zones_cb)(struct blk_zone *zone, unsigned int idx,
 			       void *data);
 
-void disk_set_zoned(struct gendisk *disk);
-
 #define BLK_ALL_ZONES  ((unsigned int)-1)
 int blkdev_report_zones(struct block_device *bdev, sector_t sector,
 		unsigned int nr_zones, report_zones_cb cb, void *data);
@@ -638,18 +636,6 @@ static inline unsigned int disk_zone_no(struct gendisk *disk, sector_t sector)
 	return sector >> ilog2(disk->queue->limits.chunk_sectors);
 }
 
-static inline void disk_set_max_open_zones(struct gendisk *disk,
-		unsigned int max_open_zones)
-{
-	disk->queue->limits.max_open_zones = max_open_zones;
-}
-
-static inline void disk_set_max_active_zones(struct gendisk *disk,
-		unsigned int max_active_zones)
-{
-	disk->queue->limits.max_active_zones = max_active_zones;
-}
-
 static inline unsigned int bdev_max_open_zones(struct block_device *bdev)
 {
 	return bdev->bd_disk->queue->limits.max_open_zones;
@@ -929,24 +915,14 @@ static inline void queue_limits_cancel_update(struct request_queue *q)
 /*
  * Access functions for manipulating queue properties
  */
-extern void blk_queue_chunk_sectors(struct request_queue *, unsigned int);
 void blk_queue_max_secure_erase_sectors(struct request_queue *q,
 		unsigned int max_sectors);
 extern void blk_queue_max_discard_sectors(struct request_queue *q,
 		unsigned int max_discard_sectors);
 extern void blk_queue_max_write_zeroes_sectors(struct request_queue *q,
 		unsigned int max_write_same_sectors);
-extern void blk_queue_logical_block_size(struct request_queue *, unsigned int);
-extern void blk_queue_max_zone_append_sectors(struct request_queue *q,
-		unsigned int max_zone_append_sectors);
-extern void blk_queue_physical_block_size(struct request_queue *, unsigned int);
-void blk_queue_zone_write_granularity(struct request_queue *q,
-				      unsigned int size);
-extern void blk_queue_alignment_offset(struct request_queue *q,
-				       unsigned int alignment);
 void disk_update_readahead(struct gendisk *disk);
 extern void blk_limits_io_min(struct queue_limits *limits, unsigned int min);
-extern void blk_queue_io_min(struct request_queue *q, unsigned int min);
 extern void blk_limits_io_opt(struct queue_limits *limits, unsigned int opt);
 extern void blk_set_queue_depth(struct request_queue *q, unsigned int depth);
 extern void blk_set_stacking_limits(struct queue_limits *lim);
-- 
2.43.0