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    scsi: add DID_REQUEUE to the error handling · bf341919
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    We have a DID_IMM_RETRY to require a retry at once, but we could do with
    a DID_REQUEUE to instruct the mid-layer to treat this command in the
    same manner as QUEUE_FULL or BUSY (i.e. halt the submission until
    another command returns ... or the queue pressure builds if there are no
    outstanding commands).
    
    Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
    bf341919