After a copy pair swap the block device's "device" symlink points to the secondary CCW device, but the gendisk's parent remained the primary, leaving /sys/block/ under the wrong parent. Move the gendisk to the secondary's device with device_move(), keeping the sysfs topology consistent after the swap. Fixes: 413862caad6f ("s390/dasd: add copy pair swap capability") Cc: stable@vger.kernel.org #6.1 Reviewed-by: Jan Hoeppner Signed-off-by: Stefan Haberland --- drivers/s390/block/dasd_eckd.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 88fa17aea2ec..ec0c62e5ef73 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -6150,6 +6150,7 @@ static int dasd_eckd_copy_pair_swap(struct dasd_device *device, char *prim_busid struct dasd_copy_relation *copy; struct dasd_block *block; struct gendisk *gdp; + int rc; copy = device->copy; if (!copy) @@ -6184,6 +6185,13 @@ static int dasd_eckd_copy_pair_swap(struct dasd_device *device, char *prim_busid /* swap blocklayer device link */ gdp = block->gdp; dasd_add_link_to_gendisk(gdp, secondary); + rc = device_move(disk_to_dev(gdp), &secondary->cdev->dev, DPM_ORDER_NONE); + if (rc) { + dev_err(&primary->cdev->dev, + "copy_pair_swap: moving blockdevice parent %s->%s failed (%d)\n", + dev_name(&primary->cdev->dev), + dev_name(&secondary->cdev->dev), rc); + } /* re-enable device */ dasd_device_remove_stop_bits(primary, DASD_STOPPED_PPRC); -- 2.51.0