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authorChristoph Hellwig <hch@lst.de>2020-11-24 09:52:59 +0100
committerJens Axboe <axboe@kernel.dk>2020-12-01 14:53:40 -0700
commitad1eaa5344b293552b6ba43f5709c76a9aa14d17 (patch)
treecb711254c057aaa967bb392a53ad0a6eb00072cc /block/genhd.c
parent71773cf797490e1cbe4909b25a2543937e7eea82 (diff)
block: switch disk_part_iter_* to use a struct block_device
Switch the partition iter infrastructure to iterate over block_device references instead of hd_struct ones mostly used to get at the block_device. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/genhd.c')
-rw-r--r--block/genhd.c59
1 files changed, 30 insertions, 29 deletions
diff --git a/block/genhd.c b/block/genhd.c
index 452f7c646e02..2d34dd2da4e9 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -244,7 +244,7 @@ EXPORT_SYMBOL_GPL(disk_part_iter_init);
* CONTEXT:
* Don't care.
*/
-struct hd_struct *disk_part_iter_next(struct disk_part_iter *piter)
+struct block_device *disk_part_iter_next(struct disk_part_iter *piter)
{
struct disk_part_tbl *ptbl;
int inc, end;
@@ -282,8 +282,9 @@ struct hd_struct *disk_part_iter_next(struct disk_part_iter *piter)
piter->idx == 0))
continue;
- get_device(part_to_dev(part->bd_part));
- piter->part = part->bd_part;
+ piter->part = bdgrab(part);
+ if (!piter->part)
+ continue;
piter->idx += inc;
break;
}
@@ -305,7 +306,8 @@ EXPORT_SYMBOL_GPL(disk_part_iter_next);
*/
void disk_part_iter_exit(struct disk_part_iter *piter)
{
- disk_put_part(piter->part);
+ if (piter->part)
+ bdput(piter->part);
piter->part = NULL;
}
EXPORT_SYMBOL_GPL(disk_part_iter_exit);
@@ -346,7 +348,6 @@ struct block_device *disk_map_sector_rcu(struct gendisk *disk, sector_t sector)
for (i = 1; i < ptbl->len; i++) {
part = rcu_dereference(ptbl->part[i]);
-
if (part && sector_in_part(part, sector)) {
rcu_assign_pointer(ptbl->last_lookup, part);
goto out_unlock;
@@ -647,7 +648,7 @@ static void register_disk(struct device *parent, struct gendisk *disk,
{
struct device *ddev = disk_to_dev(disk);
struct disk_part_iter piter;
- struct hd_struct *part;
+ struct block_device *part;
int err;
ddev->parent = parent;
@@ -697,7 +698,7 @@ static void register_disk(struct device *parent, struct gendisk *disk,
/* announce possible partitions */
disk_part_iter_init(&piter, disk, 0);
while ((part = disk_part_iter_next(&piter)))
- kobject_uevent(&part_to_dev(part)->kobj, KOBJ_ADD);
+ kobject_uevent(bdev_kobj(part), KOBJ_ADD);
disk_part_iter_exit(&piter);
if (disk->queue->backing_dev_info->dev) {
@@ -837,7 +838,7 @@ static void invalidate_partition(struct block_device *bdev)
void del_gendisk(struct gendisk *disk)
{
struct disk_part_iter piter;
- struct hd_struct *part;
+ struct block_device *part;
might_sleep();
@@ -857,8 +858,8 @@ void del_gendisk(struct gendisk *disk)
disk_part_iter_init(&piter, disk,
DISK_PITER_INCL_EMPTY | DISK_PITER_REVERSE);
while ((part = disk_part_iter_next(&piter))) {
- invalidate_partition(part->bdev);
- delete_partition(part);
+ invalidate_partition(part);
+ delete_partition(part->bd_part);
}
disk_part_iter_exit(&piter);
@@ -977,7 +978,7 @@ void __init printk_all_partitions(void)
while ((dev = class_dev_iter_next(&iter))) {
struct gendisk *disk = dev_to_disk(dev);
struct disk_part_iter piter;
- struct hd_struct *part;
+ struct block_device *part;
char name_buf[BDEVNAME_SIZE];
char devt_buf[BDEVT_SIZE];
@@ -996,14 +997,14 @@ void __init printk_all_partitions(void)
*/
disk_part_iter_init(&piter, disk, DISK_PITER_INCL_PART0);
while ((part = disk_part_iter_next(&piter))) {
- bool is_part0 = part == disk->part0->bd_part;
+ bool is_part0 = part == disk->part0;
printk("%s%s %10llu %s %s", is_part0 ? "" : " ",
- bdevt_str(part_devt(part), devt_buf),
- bdev_nr_sectors(part->bdev) >> 1,
- disk_name(disk, part->bdev->bd_partno, name_buf),
- part->bdev->bd_meta_info ?
- part->bdev->bd_meta_info->uuid : "");
+ bdevt_str(part->bd_dev, devt_buf),
+ bdev_nr_sectors(part) >> 1,
+ disk_name(disk, part->bd_partno, name_buf),
+ part->bd_meta_info ?
+ part->bd_meta_info->uuid : "");
if (is_part0) {
if (dev->parent && dev->parent->driver)
printk(" driver: %s\n",
@@ -1079,7 +1080,7 @@ static int show_partition(struct seq_file *seqf, void *v)
{
struct gendisk *sgp = v;
struct disk_part_iter piter;
- struct hd_struct *part;
+ struct block_device *part;
char buf[BDEVNAME_SIZE];
/* Don't show non-partitionable removeable devices or empty devices */
@@ -1093,9 +1094,9 @@ static int show_partition(struct seq_file *seqf, void *v)
disk_part_iter_init(&piter, sgp, DISK_PITER_INCL_PART0);
while ((part = disk_part_iter_next(&piter)))
seq_printf(seqf, "%4d %7d %10llu %s\n",
- MAJOR(part_devt(part)), MINOR(part_devt(part)),
- bdev_nr_sectors(part->bdev) >> 1,
- disk_name(sgp, part->bdev->bd_partno, buf));
+ MAJOR(part->bd_dev), MINOR(part->bd_dev),
+ bdev_nr_sectors(part) >> 1,
+ disk_name(sgp, part->bd_partno, buf));
disk_part_iter_exit(&piter);
return 0;
@@ -1489,7 +1490,7 @@ static int diskstats_show(struct seq_file *seqf, void *v)
{
struct gendisk *gp = v;
struct disk_part_iter piter;
- struct hd_struct *hd;
+ struct block_device *hd;
char buf[BDEVNAME_SIZE];
unsigned int inflight;
struct disk_stats stat;
@@ -1504,11 +1505,11 @@ static int diskstats_show(struct seq_file *seqf, void *v)
disk_part_iter_init(&piter, gp, DISK_PITER_INCL_EMPTY_PART0);
while ((hd = disk_part_iter_next(&piter))) {
- part_stat_read_all(hd, &stat);
+ part_stat_read_all(hd->bd_part, &stat);
if (queue_is_mq(gp->queue))
- inflight = blk_mq_in_flight(gp->queue, hd->bdev);
+ inflight = blk_mq_in_flight(gp->queue, hd);
else
- inflight = part_in_flight(hd->bdev);
+ inflight = part_in_flight(hd);
seq_printf(seqf, "%4d %7d %s "
"%lu %lu %lu %u "
@@ -1517,8 +1518,8 @@ static int diskstats_show(struct seq_file *seqf, void *v)
"%lu %lu %lu %u "
"%lu %u"
"\n",
- MAJOR(part_devt(hd)), MINOR(part_devt(hd)),
- disk_name(gp, hd->bdev->bd_partno, buf),
+ MAJOR(hd->bd_dev), MINOR(hd->bd_dev),
+ disk_name(gp, hd->bd_partno, buf),
stat.ios[STAT_READ],
stat.merges[STAT_READ],
stat.sectors[STAT_READ],
@@ -1673,7 +1674,7 @@ static void set_disk_ro_uevent(struct gendisk *gd, int ro)
void set_disk_ro(struct gendisk *disk, int flag)
{
struct disk_part_iter piter;
- struct hd_struct *part;
+ struct block_device *part;
if (disk->part0->bd_read_only != flag) {
set_disk_ro_uevent(disk, flag);
@@ -1682,7 +1683,7 @@ void set_disk_ro(struct gendisk *disk, int flag)
disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY);
while ((part = disk_part_iter_next(&piter)))
- part->bdev->bd_read_only = flag;
+ part->bd_read_only = flag;
disk_part_iter_exit(&piter);
}