scsi_track_queue_full (9) - Linux Manuals

scsi_track_queue_full: track QUEUE_FULL events to adjust queue depth

Command to display scsi_track_queue_full manual in Linux: $ man 9 scsi_track_queue_full

NAME

scsi_track_queue_full - track QUEUE_FULL events to adjust queue depth

SYNOPSIS

int scsi_track_queue_full(struct scsi_device * sdev, int depth);

ARGUMENTS

sdev

: SCSI Device in question

depth

: Current number of outstanding SCSI commands on this device, not counting the one returned as QUEUE_FULL.

DESCRIPTION

This function will track successive QUEUE_FULL events on a specific SCSI device to determine if and when there is a need to adjust the queue depth on the device.

RETURN

0 - No change needed, >0 - Adjust queue depth to this new depth, -1 - Drop back to untagged operation using host->cmd_per_lun as the untagged command depth

Lock Status: None held on entry

NOTES

Low level drivers may call this at any time and we will do "The Right Thing." We are interrupt context safe.

AUTHORS

James Bottomley <James.Bottomley [at] hansenpartnership.com>

: Author.

Rob Landley <rob [at] landley.net>

: Author.