From: Stefan Haberland sth@linux.ibm.com
commit 05f1d8ed03f547054efbc4d29bb7991c958ede95 upstream.
Quiesce and resume are functions that tell the DASD driver to stop/resume issuing I/Os to a specific DASD.
On resume dasd_schedule_block_bh() is called to kick handling of IO requests again. This does unfortunately not cover internal requests which are used for path verification for example.
This could lead to a hanging device when a path event or anything else that triggers internal requests occurs on a quiesced device.
Fix by also calling dasd_schedule_device_bh() which triggers handling of internal requests on resume.
Fixes: 8e09f21574ea ("[S390] dasd: add hyper PAV support to DASD device driver, part 1")
Cc: stable@vger.kernel.org Signed-off-by: Stefan Haberland sth@linux.ibm.com Reviewed-by: Jan Hoeppner hoeppner@linux.ibm.com Link: https://lore.kernel.org/r/20230721193647.3889634-2-sth@linux.ibm.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/s390/block/dasd_ioctl.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/s390/block/dasd_ioctl.c +++ b/drivers/s390/block/dasd_ioctl.c @@ -131,6 +131,7 @@ static int dasd_ioctl_resume(struct dasd spin_unlock_irqrestore(get_ccwdev_lock(base->cdev), flags);
dasd_schedule_block_bh(block); + dasd_schedule_device_bh(base); return 0; }