Ensure that only power of 2 zoned devices are enabled for dm targets that supports zoned devices. This constraint can be relaxed once non power of 2 zone size support is added to the DM layer.
Signed-off-by: Pankaj Raghav <[email protected]> --- drivers/md/dm-table.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 03541cfc2317..2a8af70d1d4a 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -251,6 +251,12 @@ 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 (!is_power_of_2(zone_sectors)) { + DMWARN("%s: %pg only power of two zone size supported", + dm_device_name(ti->table->md), bdev); + return 1; + } + if (start & (zone_sectors - 1)) { DMWARN("%s: start=%llu not aligned to h/w zone size %u of %pg", dm_device_name(ti->table->md), -- 2.25.1 -- dm-devel mailing list [email protected] https://listman.redhat.com/mailman/listinfo/dm-devel
