Commit ffc548bb authored by Bart Van Assche's avatar Bart Van Assche Committed by Doug Ledford

IB/srp: Avoid that mapping failure triggers an infinite loop

The srp_queuecommand() function translates ENOMEM into QUEUE_FULL
which causes the SCSI mid-layer to retry the command. All other
error codes are translated into DID_ERROR which causes the SCSI
command to fail. Return E2BIG if mapping will always fail to
prevent that the SCSI mid-layer keeps resubmitting a command
forever.
Signed-off-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Laurence Oberman <loberman@redhat.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent fa9863f8
......@@ -1681,6 +1681,8 @@ map_complete:
unmap:
srp_unmap_data(scmnd, ch, req);
if (ret == -ENOMEM && req->nmdesc >= target->mr_pool_size)
ret = -E2BIG;
return ret;
}
......
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