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

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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.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2022-04-15 06:52:52 +02:00
committed by Jens Axboe
parent f0f975a4dd
commit 5c4b4a5c6f
2 changed files with 36 additions and 33 deletions
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34
include/linux/blkdev.h
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@@ -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)
{