[PATCH 16/27] block: use bdev_alignment_offset in part_alignment_offset_show

[Christoph Hellwig <hch@xxxxxx>]

Replace the open coded offset calculation with the proper helper.
This is an ABI change in that the -1 for a misaligned partition is
properly propagated, which can be considered a bug fix and matches
what is done on the whole device.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
---
 block/partitions/core.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/block/partitions/core.c b/block/partitions/core.c
index 2ef8dfa1e5c85..240b3fff521e4 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -200,11 +200,7 @@ static ssize_t part_ro_show(struct device *dev,
 static ssize_t part_alignment_offset_show(struct device *dev,
                                          struct device_attribute *attr, char 
*buf)
 {
-       struct block_device *bdev = dev_to_bdev(dev);
-
-       return sprintf(buf, "%u\n",
-               queue_limit_alignment_offset(&bdev_get_queue(bdev)->limits,
-                               bdev->bd_start_sect));
+       return sprintf(buf, "%u\n", bdev_alignment_offset(dev_to_bdev(dev)));
 }
 
 static ssize_t part_discard_alignment_show(struct device *dev,
-- 
2.30.2