Il 21/05/2014 15:30, Bart Van Assche ha scritto:
+static bool scmd_being_handled_in_other_context(struct scsi_cmnd *scmd)
+{
+ struct Scsi_Host *shost = scmd->device->host;
+ struct scsi_cmnd *c;
+ unsigned long flags;
+ bool ret = false;
+
+ if (!blk_rq_completed(scmd->request))
+ return true;
+
+ spin_lock_irqsave(shost->host_lock, flags);
+ list_for_each_entry(c, &shost->eh_cmd_q, eh_entry) {
+ if (c == scmd) {
+ ret = true;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(shost->host_lock, flags);
+
+ return ret;
+}
+
/**
* scmd_eh_abort_handler - Handle command aborts
* @work: command to be aborted.
@@ -120,6 +142,8 @@ scmd_eh_abort_handler(struct work_struct *work)
struct scsi_device *sdev = scmd->device;
int rtn;
+ WARN_ON_ONCE(scmd_being_handled_in_other_context(scmd));
What about a simpler, though less accuracte
WARN_ON(!blk_rq_completed(scmd->request));
that doesn't need the host_lock?
Paolo
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