target: Remove transport_do_task_sg_chain() and associated detritus
Now that all fabrics are converted over to using se_cmd->t_data_sg directly, we can drop the task sg chaining support. With the modern memory allocation in target core, task sg chaining is needless overhead -- we would split up the main cmd sglist into pieces, and then splice those pieces back together instead of just using the original list directly. Signed-off-by:Roland Dreier <roland@purestorage.com> Reviewed-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Nicholas Bellinger <nab@linux-iscsi.org>
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