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loop: Make user notify for adding loop device failed
There is no error number returned if loop driver fails in function alloc_disk to add new loop device. Add a correct error number to make user notify in this case. Signed-off-by: Minfei Huang <mnghuan@gmail.com> Reviewed-by: Ming Lei <tom.leiming@gmail.com> Reviewed-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
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@ -1765,6 +1765,7 @@ static int loop_add(struct loop_device **l, int i)
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*/
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queue_flag_set_unlocked(QUEUE_FLAG_NOMERGES, lo->lo_queue);
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err = -ENOMEM;
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disk = lo->lo_disk = alloc_disk(1 << part_shift);
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if (!disk)
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goto out_free_queue;
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