>>>>> "Christoph" == Christoph Hellwig <hch@xxxxxx> writes:
Christoph> Avoid taking the host-wide host_lock to check the per-host
Christoph> queue limit. Instead we do an atomic_inc_return early on to
Christoph> grab our slot in the queue, and if nessecary decrement it
Christoph> after finishing all checks.
More nitpicking. In the two previous atomic conversion patches you kept
%hu for the atomic_t. Here it's %d.
+static ssize_t
+sdev_show_device_busy(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+ return snprintf(buf, 20, "%d\n", atomic_read(&sdev->device_busy));
+}
+static DEVICE_ATTR(device_busy, S_IRUGO, sdev_show_device_busy, NULL);
Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
--
Martin K. Petersen Oracle Linux Engineering
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