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Commit b8b22533fed12dbb9e5a63d414cb1c768d1c28dd

Authored by Christoph Hellwig
Committed by Nicholas Bellinger
1 parent 43381ce8bb
Exists in smarc-l5.0.0_1.0.0-ga and in 5 other branches imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga

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>

Showing 1 changed file with 11 additions and 2 deletions Side-by-side Diff

drivers/target/tcm_fc/tfc_io.c
Diff comments   View file @ b8b2253
... ... @@ -183,6 +183,13 @@
183 183 return ft_queue_status(se_cmd);
184 184 }
185 185  
  186 +static void ft_execute_work(struct work_struct *work)
  187 +{
  188 + struct ft_cmd *cmd = container_of(work, struct ft_cmd, work);
  189 +
  190 + target_execute_cmd(&cmd->se_cmd);
  191 +}
  192 +
186 193 /*
187 194 * Receive write data frame.
188 195 */
... ... @@ -307,8 +314,10 @@
307 314 cmd->write_data_len += tlen;
308 315 }
309 316 last_frame:
310   - if (cmd->write_data_len == se_cmd->data_length)
311   - transport_generic_handle_data(se_cmd);
  317 + if (cmd->write_data_len == se_cmd->data_length) {
  318 + INIT_WORK(&cmd->work, ft_execute_work);
  319 + queue_work(cmd->sess->tport->tpg->workqueue, &cmd->work);
  320 + }
312 321 drop:
313 322 fc_frame_free(fp);
314 323 }