block: move {bdev,queue_limit}_discard_alignment out of line

No need to inline these fairly larger helpers.  Also fix the return value
to be unsigned, just like the field in struct queue_limits.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20220415045258.199825-22-hch@lst.deSigned-off-by: Jens Axboe <axboe@kernel.dk>

block/blk-settings.c

@@ -478,6 +478,30 @@ static int queue_limit_alignment_offset(struct queue_limits *lim,
 	return (granularity + lim->alignment_offset - alignment) % granularity;
 }
 
+static unsigned int queue_limit_discard_alignment(struct queue_limits *lim,
+		sector_t sector)
+{
+	unsigned int alignment, granularity, offset;
+
+	if (!lim->max_discard_sectors)
+		return 0;
+
+	/* Why are these in bytes, not sectors? */
+	alignment = lim->discard_alignment >> SECTOR_SHIFT;
+	granularity = lim->discard_granularity >> SECTOR_SHIFT;
+	if (!granularity)
+		return 0;
+
+	/* Offset of the partition start in 'granularity' sectors */
+	offset = sector_div(sector, granularity);
+
+	/* And why do we do this modulus *again* in blkdev_issue_discard()? */
+	offset = (granularity + alignment - offset) % granularity;
+
+	/* Turn it back into bytes, gaah */
+	return offset << SECTOR_SHIFT;
+}
+
 static unsigned int blk_round_down_sectors(unsigned int sectors, unsigned int lbs)
 {
 	sectors = round_down(sectors, lbs >> SECTOR_SHIFT);
@@ -924,3 +948,14 @@ int bdev_alignment_offset(struct block_device *bdev)
 	return q->limits.alignment_offset;
 }
 EXPORT_SYMBOL_GPL(bdev_alignment_offset);
+
+unsigned int bdev_discard_alignment(struct block_device *bdev)
+{
+	struct request_queue *q = bdev_get_queue(bdev);
+
+	if (bdev_is_partition(bdev))
+		return queue_limit_discard_alignment(&q->limits,
+				bdev->bd_start_sect);
+	return q->limits.discard_alignment;
+}
+EXPORT_SYMBOL_GPL(bdev_discard_alignment);

include/linux/blkdev.h

@@ -1252,39 +1252,7 @@ bdev_zone_write_granularity(struct block_device *bdev)
 }
 
 int bdev_alignment_offset(struct block_device *bdev);
-
-static inline int queue_limit_discard_alignment(struct queue_limits *lim, sector_t sector)
-{
-	unsigned int alignment, granularity, offset;
-
-	if (!lim->max_discard_sectors)
-		return 0;
-
-	/* Why are these in bytes, not sectors? */
-	alignment = lim->discard_alignment >> SECTOR_SHIFT;
-	granularity = lim->discard_granularity >> SECTOR_SHIFT;
-	if (!granularity)
-		return 0;
-
-	/* Offset of the partition start in 'granularity' sectors */
-	offset = sector_div(sector, granularity);
-
-	/* And why do we do this modulus *again* in blkdev_issue_discard()? */
-	offset = (granularity + alignment - offset) % granularity;
-
-	/* Turn it back into bytes, gaah */
-	return offset << SECTOR_SHIFT;
-}
-
-static inline int bdev_discard_alignment(struct block_device *bdev)
-{
-	struct request_queue *q = bdev_get_queue(bdev);
-
-	if (bdev_is_partition(bdev))
-		return queue_limit_discard_alignment(&q->limits,
-				bdev->bd_start_sect);
-	return q->limits.discard_alignment;
-}
+unsigned int bdev_discard_alignment(struct block_device *bdev);
 
 static inline unsigned int bdev_write_zeroes_sectors(struct block_device *bdev)
 {