return 1;
}
+static bool scsi_cmd_retry_allowed(struct scsi_cmnd *cmd)
+{
+ if (cmd->allowed == SCSI_CMD_RETRIES_NO_LIMIT)
+ return true;
+
+ return ++cmd->retries <= cmd->allowed;
+}
+
/**
* scmd_eh_abort_handler - Handle command aborts
* @work: command to be aborted.
"eh timeout, not retrying "
"aborted command\n"));
} else if (!scsi_noretry_cmd(scmd) &&
- (++scmd->retries <= scmd->allowed)) {
+ scsi_cmd_retry_allowed(scmd)) {
SCSI_LOG_ERROR_RECOVERY(3,
scmd_printk(KERN_WARNING, scmd,
"retry aborted command\n"));
* upper level.
*/
if (rtn == SUCCESS)
- /* we don't want this command reissued, just
- * finished with the sense data, so set
- * retries to the max allowed to ensure it
- * won't get reissued */
- scmd->retries = scmd->allowed;
+ /*
+ * We don't want this command reissued, just finished
+ * with the sense data, so set retries to the max
+ * allowed to ensure it won't get reissued. If the user
+ * has requested infinite retries, we also want to
+ * finish this command, so force completion by setting
+ * retries and allowed to the same value.
+ */
+ if (scmd->allowed == SCSI_CMD_RETRIES_NO_LIMIT)
+ scmd->retries = scmd->allowed = 1;
+ else
+ scmd->retries = scmd->allowed;
else if (rtn != NEEDS_RETRY)
continue;
* the request was not marked fast fail. Note that above,
* even if the request is marked fast fail, we still requeue
* for queue congestion conditions (QUEUE_FULL or BUSY) */
- if ((++scmd->retries) <= scmd->allowed
- && !scsi_noretry_cmd(scmd)) {
+ if (scsi_cmd_retry_allowed(scmd) && !scsi_noretry_cmd(scmd)) {
return NEEDS_RETRY;
} else {
/*
list_for_each_entry_safe(scmd, next, done_q, eh_entry) {
list_del_init(&scmd->eh_entry);
if (scsi_device_online(scmd->device) &&
- !scsi_noretry_cmd(scmd) &&
- (++scmd->retries <= scmd->allowed)) {
+ !scsi_noretry_cmd(scmd) && scsi_cmd_retry_allowed(scmd)) {
SCSI_LOG_ERROR_RECOVERY(3,
scmd_printk(KERN_INFO, scmd,
"%s: flush retry cmd\n",
scsi_mq_requeue_cmd(cmd);
}
+static bool scsi_cmd_runtime_exceeced(struct scsi_cmnd *cmd)
+{
+ struct request *req = cmd->request;
+ unsigned long wait_for;
+
+ if (cmd->allowed == SCSI_CMD_RETRIES_NO_LIMIT)
+ return false;
+
+ wait_for = (cmd->allowed + 1) * req->timeout;
+ if (time_before(cmd->jiffies_at_alloc + wait_for, jiffies)) {
+ scmd_printk(KERN_ERR, cmd, "timing out command, waited %lus\n",
+ wait_for/HZ);
+ return true;
+ }
+ return false;
+}
+
/* Helper for scsi_io_completion() when special action required. */
static void scsi_io_completion_action(struct scsi_cmnd *cmd, int result)
{
int level = 0;
enum {ACTION_FAIL, ACTION_REPREP, ACTION_RETRY,
ACTION_DELAYED_RETRY} action;
- unsigned long wait_for = (cmd->allowed + 1) * req->timeout;
struct scsi_sense_hdr sshdr;
bool sense_valid;
bool sense_current = true; /* false implies "deferred sense" */
} else
action = ACTION_FAIL;
- if (action != ACTION_FAIL &&
- time_before(cmd->jiffies_at_alloc + wait_for, jiffies))
+ if (action != ACTION_FAIL && scsi_cmd_runtime_exceeced(cmd))
action = ACTION_FAIL;
switch (action) {
static void scsi_softirq_done(struct request *rq)
{
struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq);
- unsigned long wait_for = (cmd->allowed + 1) * rq->timeout;
int disposition;
INIT_LIST_HEAD(&cmd->eh_entry);
atomic_inc(&cmd->device->ioerr_cnt);
disposition = scsi_decide_disposition(cmd);
- if (disposition != SUCCESS &&
- time_before(cmd->jiffies_at_alloc + wait_for, jiffies)) {
- scmd_printk(KERN_ERR, cmd,
- "timing out command, waited %lus\n",
- wait_for/HZ);
+ if (disposition != SUCCESS && scsi_cmd_runtime_exceeced(cmd))
disposition = SUCCESS;
- }
scsi_log_completion(cmd, disposition);