On 05/04/2010 11:26 AM, James Bottomley wrote:
The other patch is fine, but I don't think this is necessary. The reason is that even returning SUCCESS here, we go straight into scsi_finish_command() (which passes it up to the driver handler) and then scsi_io_completion(). There's a catch for UNIT_ATTENTION in scsi_io_completion
The request is sent as a REQ_TYPE_BLOCK_PC (this flag is set for the request in sd_prepare_flush), and scsi_io_completion's blk_pc_request check() that returns the request upwards is before the UNIT_ATTENTION check one so we never hit the UNIT_ATTENTION check.
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