diff mbox series

[1/7] block: remove the alignment_offset field from struct hd_struct

Message ID 20200831180239.2372776-2-hch@lst.de (mailing list archive)
State New, archived
Headers show
Series [1/7] block: remove the alignment_offset field from struct hd_struct | expand

Commit Message

Christoph Hellwig Aug. 31, 2020, 6:02 p.m. UTC 
The alignment offset is only used in slow path callers, so just calculate
it on the fly.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 block/partitions/core.c | 7 ++++---
 include/linux/blkdev.h  | 5 ++---
 include/linux/genhd.h   | 1 -
 3 files changed, 6 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/block/partitions/core.c b/block/partitions/core.c
index 328a2cb7875ba1..4baa065eef7864 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -199,7 +199,10 @@  static ssize_t part_alignment_offset_show(struct device *dev,
 					  struct device_attribute *attr, char *buf)
 {
 	struct hd_struct *p = dev_to_part(dev);
-	return sprintf(buf, "%llu\n", (unsigned long long)p->alignment_offset);
+
+	return sprintf(buf, "%u\n",
+		queue_limit_alignment_offset(&part_to_disk(p)->queue->limits,
+				p->start_sect));
 }
 
 static ssize_t part_discard_alignment_show(struct device *dev,
@@ -397,8 +400,6 @@  static struct hd_struct *add_partition(struct gendisk *disk, int partno,
 	pdev = part_to_dev(p);
 
 	p->start_sect = start;
-	p->alignment_offset =
-		queue_limit_alignment_offset(&disk->queue->limits, start);
 	p->discard_alignment =
 		queue_limit_discard_alignment(&disk->queue->limits, start);
 	p->nr_sects = len;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 0a1730b30ad210..ba1f5f5e11c647 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1456,10 +1456,9 @@  static inline int bdev_alignment_offset(struct block_device *bdev)
 
 	if (q->limits.misaligned)
 		return -1;
-
 	if (bdev != bdev->bd_contains)
-		return bdev->bd_part->alignment_offset;
-
+		return queue_limit_alignment_offset(&q->limits,
+				bdev->bd_part->start_sect);
 	return q->limits.alignment_offset;
 }
 
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 39025dc0397c04..bfa411c80dbbf8 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -65,7 +65,6 @@  struct hd_struct {
 	struct disk_stats __percpu *dkstats;
 	struct percpu_ref ref;
 
-	sector_t alignment_offset;
 	unsigned int discard_alignment;
 	struct device __dev;
 	struct kobject *holder_dir;