block: Stop using byte offsets

All callers of the stacking functions use 512-byte sector units rather
than byte offsets.  Simplify the code so the stacking functions take
sectors when specifying data offsets.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 5 insertions, 12 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 5c8018977efa..ffb13ad35716 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1112,18 +1112,13 @@ static inline int queue_alignment_offset(struct request_queue *q)
         return q->limits.alignment_offset;
 }
 
-static inline int queue_limit_alignment_offset(struct queue_limits *lim, sector_t offset)
+static inline int queue_limit_alignment_offset(struct queue_limits *lim, sector_t sector)
 {
         unsigned int granularity = max(lim->physical_block_size, lim->io_min);
+        unsigned int alignment = (sector << 9) & (granularity - 1);
 
-        offset &= granularity - 1;
-        return (granularity + lim->alignment_offset - offset) & (granularity - 1);
-}
-
-static inline int queue_sector_alignment_offset(struct request_queue *q,
-                                                sector_t sector)
-{
-        return queue_limit_alignment_offset(&q->limits, sector << 9);
+        return (granularity + lim->alignment_offset - alignment)
+                & (granularity - 1);
 }
 
 static inline int bdev_alignment_offset(struct block_device *bdev)
@@ -1147,10 +1142,8 @@ static inline int queue_discard_alignment(struct request_queue *q)
         return q->limits.discard_alignment;
 }
 
-static inline int queue_sector_discard_alignment(struct request_queue *q,
-                                                 sector_t sector)
+static inline int queue_limit_discard_alignment(struct queue_limits *lim, sector_t sector)
 {
-        struct queue_limits *lim = &q->limits;
         unsigned int alignment = (sector << 9) & (lim->discard_granularity - 1);
 
         return (lim->discard_granularity + lim->discard_alignment - alignment)