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ublk: return -EINTR if breaking from waiting for existed users in DEL_DEV

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If user interrupts wait_event_interruptible() in ublk_ctrl_del_dev(),
return -EINTR and let user know what happens.

Fixes: 0abe39dec0 ("block: ublk: improve handling device deletion")
Reported-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20230726144502.566785-4-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei 2023-07-26 22:45:02 +08:00 committed by Jens Axboe
parent 0c0cbd4ebc
commit 3e9dce80db
1 changed files with 2 additions and 2 deletions
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4
drivers/block/ublk_drv.c
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@ -2126,8 +2126,8 @@ static int ublk_ctrl_del_dev(struct ublk_device **p_ub)
* - the device number is freed already, we will not find this
* device via ublk_get_device_from_id()
*/
wait_event_interruptible(ublk_idr_wq, ublk_idr_freed(idx));
if (wait_event_interruptible(ublk_idr_wq, ublk_idr_freed(idx)))
return -EINTR;
return 0;
}