461d4e90c8
All ordered request related stuff delegated to HLD. Midlayer now doens't deal with ordered setting or prepare_flush callback. sd.c updated to deal with blk_queue_ordered setting. Currently, ordered tag isn't used as SCSI midlayer cannot guarantee request ordering. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jens Axboe <axboe@suse.de>
31 lines
762 B
C
31 lines
762 B
C
#ifndef _SCSI_SCSI_DRIVER_H
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#define _SCSI_SCSI_DRIVER_H
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#include <linux/device.h>
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struct module;
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struct scsi_cmnd;
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struct scsi_driver {
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struct module *owner;
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struct device_driver gendrv;
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int (*init_command)(struct scsi_cmnd *);
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void (*rescan)(struct device *);
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int (*issue_flush)(struct device *, sector_t *);
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int (*prepare_flush)(struct request_queue *, struct request *);
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};
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#define to_scsi_driver(drv) \
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container_of((drv), struct scsi_driver, gendrv)
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extern int scsi_register_driver(struct device_driver *);
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#define scsi_unregister_driver(drv) \
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driver_unregister(drv);
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extern int scsi_register_interface(struct class_interface *);
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#define scsi_unregister_interface(intf) \
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class_interface_unregister(intf)
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#endif /* _SCSI_SCSI_DRIVER_H */
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