On Wed, Feb 12, 2014 at 12:08:35PM +0100, Hannes Reinecke wrote: > What happens when another CPU is just modifying the starved list > at this point? > We probably won't be seeing the update until when the next command > completed.
That's correct if the last was emptry previous. list_empty won't return true when adding an additional command. > Which probably doesn't matter if the HBA has run out of resources > (which means there are plenty of other commands outstanding), > but it'll surely influence the load balancing when using several > devices, won't it? Only when first adding an item to the starved list. Load balancing isn't that important when just dealing with two commands but more for a long lasting overload. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
