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author | Christoph Hellwig <hch@lst.de> | 2014-11-03 20:15:14 +0100 |
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committer | Christoph Hellwig <hch@lst.de> | 2014-11-12 11:19:43 +0100 |
commit | c8b09f6fb67df7fc1b51ced1037fa9b677428149 (patch) | |
tree | 87527c3e17a7539c0ffa9f64fbd85ec2ad3dabf1 /include/scsi/scsi_device.h | |
parent | 2ecb204d07ac8debe3893c362415919bc78bebd6 (diff) | |
download | op-kernel-dev-c8b09f6fb67df7fc1b51ced1037fa9b677428149.zip op-kernel-dev-c8b09f6fb67df7fc1b51ced1037fa9b677428149.tar.gz |
scsi: don't set tagging state from scsi_adjust_queue_depth
Remove the tagged argument from scsi_adjust_queue_depth, and just let it
handle the queue depth. For most drivers those two are fairly separate,
given that most modern drivers don't care about the SCSI "tagged" status
of a command at all, and many old drivers allow queuing of multiple
untagged commands in the driver.
Instead we start out with the ->simple_tags flag set before calling
->slave_configure, which is how all drivers actually looking at
->simple_tags except for one worke anyway. The one other case looks
broken, but I've kept the behavior as-is for now.
Except for that we only change ->simple_tags from the ->change_queue_type,
and when rejecting a tag message in a single driver, so keeping this
churn out of scsi_adjust_queue_depth is a clear win.
Now that the usage of scsi_adjust_queue_depth is more obvious we can
also remove all the trivial instances in ->slave_alloc or ->slave_configure
that just set it to the cmd_per_lun default.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/scsi/scsi_device.h')
-rw-r--r-- | include/scsi/scsi_device.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index e8fecb5..0aeaa00 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -380,7 +380,7 @@ extern struct scsi_device *__scsi_iterate_devices(struct Scsi_Host *, #define __shost_for_each_device(sdev, shost) \ list_for_each_entry((sdev), &((shost)->__devices), siblings) -extern void scsi_adjust_queue_depth(struct scsi_device *, int, int); +extern void scsi_adjust_queue_depth(struct scsi_device *, int); extern int scsi_track_queue_full(struct scsi_device *, int); extern int scsi_set_medium_removal(struct scsi_device *, char); |