[PATCH v14 10/13] dm-table: allow zoned devices with non power-of-2 zone sizes

Pankaj Raghav
2022-09-20T09:18:41Z

Allow dm to support zoned devices with non power-of-2(po2) zone sizes as
the block layer now supports it.

Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Mike Snitzer <snitzer@kernel.org>
---
drivers/md/dm-table.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index e42016359a77..38b83c383e8f 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -250,7 +250,7 @@ static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev,
if (bdev_is_zoned(bdev)) {
unsigned int zone_sectors = bdev_zone_sectors(bdev);

- if (start & (zone_sectors - 1)) {
+ if (!bdev_is_zone_start(bdev, start)) {
DMERR("%s: start=%llu not aligned to h/w zone size %u of %pg",
dm_device_name(ti->table->md),
(unsigned long long)start,
@@ -267,7 +267,7 @@ static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev,
* devices do not end up with a smaller zone in the middle of
* the sector range.
*/
- if (len & (zone_sectors - 1)) {
+ if (!bdev_is_zone_start(bdev, len)) {
DMERR("%s: len=%llu not aligned to h/w zone size %u of %pg",
dm_device_name(ti->table->md),
(unsigned long long)len,
@@ -1647,8 +1647,7 @@ static int validate_hardware_zoned_model(struct dm_table *t,
return -EINVAL;
}

- /* Check zone size validity and compatibility */
- if (!zone_sectors || !is_power_of_2(zone_sectors))
+ if (!zone_sectors)
return -EINVAL;

if (dm_table_any_dev_attr(t, device_not_matches_zone_sectors, &zone_sectors)) {
--
2.25.1