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[SCSI] sd: disentangle barriers in SCSI

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Our current implementation has a generic set of barrier functions that
go through the SCSI driver model.  Realistically, this is unnecessary,
because the only device that can use barriers (sd) can set the flush
functions up at probe or revalidate time.  This patch pulls the barrier
functions out of the mid layer and scsi driver model and relocates them
directly in sd.

Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
James Bottomley
2007-08-03 16:41:11 -05:00
committed by James Bottomley
parent 66dbfbe6fd
commit 03a5743a12
4 changed files with 11 additions and 24 deletions
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include/scsi/scsi_driver.h
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@@ -13,8 +13,6 @@ struct scsi_driver {
int (*init_command)(struct scsi_cmnd *);
void (*rescan)(struct device *);
int (*issue_flush)(struct device *, sector_t *);
int (*prepare_flush)(struct request_queue *, struct request *);
};
#define to_scsi_driver(drv) \
container_of((drv), struct scsi_driver, gendrv)