On 10/25/2016 04:50 PM, James Bottomley wrote:
On Tue, 2016-10-25 at 23:18 +0000, Bart Van Assche wrote:
Anyway, currently the following functions interpret the SCSI sense
buffer:
* scsi_io_completion() in scsi_lib.c.
* scsi_mode_sense() in scsi_lib.c.
* scsi_test_unit_ready_flags() in scsi_lib.c.
* scsi_probe_lun() in scsi_scan.c.
* scsi_report_lun_scan() in scsi_scan.c.
* ioctl_internal_command() in scsi_ioctl.c.
* sg_rq_end_io() in sg.c.
* scsi_check_sense() in scsi_error.c.
* spi_execute() in scsi_transport_spi.c.
Are you sure we should add sense code interpretation code in a tenth
function in the SCSI core?
In the absence of a better proposal, yes. I originally looked into
better BLOCK_PC error handling in scsi_io_completion, but that has some
knock on problems, so it seems best to leave it alone.
Can you elaborate on this? Since the sense buffer is available in
scsi_io_completion() and since that function already calls
scsi_command_normalize_sense() this function seems like a good candidate
to me to add retry logic for REQ_TYPE_BLOCK_PC requests.
Thanks,
Bart.
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