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Commit 6f9e7f01 authored by Roland Dreier's avatar Roland Dreier Committed by Nicholas Bellinger
Browse files

IB/srpt: Remove use of transport_do_task_sg_chain() 



With the modern target core, se_cmd->t_data_sg already points to a
sglist that covers the whole command.  So task_sg chaining is needless
overhead and obfuscation -- instead of splicing the split up task
sglists back into one list, we can just use the original list directly.

Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
parent e182d682

drivers/infiniband/ulp/srpt/ib_srpt.c

+2 −6
Original line number Diff line number Diff line
@@ -1099,9 +1099,8 @@ static int srpt_map_sg_to_ib_sge(struct srpt_rdma_ch *ch, 
	dir = cmd->data_direction;

	BUG_ON(dir == DMA_NONE);



	transport_do_task_sg_chain(cmd);

	ioctx->sg = sg = sg_orig = cmd->t_tasks_sg_chained;

	ioctx->sg_cnt = sg_cnt = cmd->t_tasks_sg_chained_no;

	ioctx->sg = sg = sg_orig = cmd->t_data_sg;

	ioctx->sg_cnt = sg_cnt = cmd->t_data_nents;



	count = ib_dma_map_sg(ch->sport->sdev->device, sg, sg_cnt,

			      opposite_dma_dir(dir));
@@ -4003,9 +4002,6 @@ static int __init srpt_init_module(void) 


	srpt_target->tf_ops = srpt_template;



	/* Enable SG chaining */

	srpt_target->tf_ops.task_sg_chaining = true;



	/*

	 * Set up default attribute lists.

	 */