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libata: flush is an IO command

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ATA_QCFLAG_IO is used to mark commands which are used to perform
regluar IO transfers via block layer.  These commands are assumed to
be valid and taken more seriously during error handling.  Cache flush
is used by regular IO path and necessary for data integrity.  Mark it
with ATA_QCFLAG_IO.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2007-10-26 15:53:59 +09:00 committed by Jeff Garzik
parent 5595ddf98c
commit b666da35d9
1 changed files with 3 additions and 0 deletions
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3
drivers/ata/libata-scsi.c
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@ -1108,6 +1108,9 @@ static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc)
else
tf->command = ATA_CMD_FLUSH;
/* flush is critical for IO integrity, consider it an IO command */
qc->flags |= ATA_QCFLAG_IO;
return 0;
}