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tcm_fc: Offload WRITE I/O backend submission to tpg workqueue 

Defer the write processing to the internal to be able to use
target_execute_cmd.  I'm not even entirely sure the calling code requires
this due to the convoluted structure in libfc, but let's be safe for now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Mark Rustad <mark.d.rustad@intel.com>
Cc: Kiran Patil <Kiran.patil@intel.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
hifive-unleashed-5.1
Christoph Hellwig 2012-07-08 15:58:45 -04:00 committed by Nicholas Bellinger
parent 43381ce8bb
commit b8b22533fe
1 changed files with 11 additions and 2 deletions
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13
drivers/target/tcm_fc/tfc_io.c
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@ -183,6 +183,13 @@ int ft_queue_data_in(struct se_cmd *se_cmd)
return ft_queue_status(se_cmd);
}
static void ft_execute_work(struct work_struct *work)
{
struct ft_cmd *cmd = container_of(work, struct ft_cmd, work);
target_execute_cmd(&cmd->se_cmd);
}
/*
* Receive write data frame.
*/
@ -307,8 +314,10 @@ void ft_recv_write_data(struct ft_cmd *cmd, struct fc_frame *fp)
cmd->write_data_len += tlen;
}
last_frame:
if (cmd->write_data_len == se_cmd->data_length)
transport_generic_handle_data(se_cmd);
if (cmd->write_data_len == se_cmd->data_length) {
INIT_WORK(&cmd->work, ft_execute_work);
queue_work(cmd->sess->tport->tpg->workqueue, &cmd->work);
}
drop:
fc_frame_free(fp);
}