Commit 27197367 authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik
Browse files

[PATCH] libata: add ATA_QCFLAG_IO 



Add a new qc flag ATA_QCFLAG_IO.  This flag gets set for normal IO
commands originating from SCSI midlayer.  This information will be
used by EH to determine transfer speed reconfiguration.

Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent e8384607

drivers/scsi/libata-scsi.c

+1 −0
Original line number Diff line number Diff line
@@ -1188,6 +1188,7 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm 
	u64 block;

	u32 n_block;



	qc->flags |= ATA_QCFLAG_IO;

	tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;



	if (scsicmd[0] == WRITE_10 || scsicmd[0] == WRITE_6 ||

include/linux/libata.h

+2 −1
Original line number Diff line number Diff line
@@ -161,7 +161,8 @@ enum { 
	ATA_QCFLAG_SG		= (1 << 1), /* have s/g table? */

	ATA_QCFLAG_SINGLE	= (1 << 2), /* no s/g, just a single buffer */

	ATA_QCFLAG_DMAMAP	= ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE,

	ATA_QCFLAG_EH_SCHEDULED = (1 << 3), /* EH scheduled */

	ATA_QCFLAG_IO		= (1 << 3), /* standard IO command */

	ATA_QCFLAG_EH_SCHEDULED = (1 << 4), /* EH scheduled */



	/* host set flags */

	ATA_HOST_SIMPLEX	= (1 << 0),	/* Host is simplex, one DMA channel per host_set only */