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[SCSI] cleanup setting task state in scsi_error_handler()

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A quick reading of scsi_error_handler() one could come away with the
impression that it does its wakeup event check while the task state is
TASK_RUNNING.  In fact it sets TASK_INTERRUPTIBLE at the bottom of the
loop, but that is ~50 lines down.

Just set TASK_INTERRUPTIBLE at the top of loop and be done.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Dan Williams 2012-06-21 23:25:42 -07:00 committed by James Bottomley
parent 36fed49805
commit b9d5c6b7ef
1 changed files with 1 additions and 3 deletions
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4
drivers/scsi/scsi_error.c
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@ -1818,15 +1818,14 @@ int scsi_error_handler(void *data)
* We never actually get interrupted because kthread_run
* disables signal delivery for the created thread.
*/
set_current_state(TASK_INTERRUPTIBLE);
while (!kthread_should_stop()) {
set_current_state(TASK_INTERRUPTIBLE);
if ((shost->host_failed == 0 && shost->host_eh_scheduled == 0) ||
shost->host_failed != shost->host_busy) {
SCSI_LOG_ERROR_RECOVERY(1,
printk("Error handler scsi_eh_%d sleeping\n",
shost->host_no));
schedule();
set_current_state(TASK_INTERRUPTIBLE);
continue;
}
@ -1863,7 +1862,6 @@ int scsi_error_handler(void *data)
scsi_restart_operations(shost);
if (!shost->eh_noresume)
scsi_autopm_put_host(shost);
set_current_state(TASK_INTERRUPTIBLE);
}
__set_current_state(TASK_RUNNING);