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[SCSI] scsi_dh: make check_sense return ADD_TO_MLQUEUE 

Change scsi_dh check_sense functions to return ADD_TO_MLQUEUE
to allow retries to occur without restriction of blk_noretry_request
check.

Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com>
Acked-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Mike Anderson 2008-08-12 12:11:57 -07:00 committed by James Bottomley
parent 025270f0ea
commit c7dbb627a2
3 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/scsi/device_handler/scsi_dh_alua.c
View File

@ -425,7 +425,7 @@ static int alua_check_sense(struct scsi_device *sdev,
/*
* LUN Not Accessible - ALUA state transition
*/
return NEEDS_RETRY;
return ADD_TO_MLQUEUE;
if (sense_hdr->asc == 0x04 && sense_hdr->ascq == 0x0b)
/*
* LUN Not Accessible -- Target port in standby state
@ -447,18 +447,18 @@ static int alua_check_sense(struct scsi_device *sdev,
/*
* Power On, Reset, or Bus Device Reset, just retry.
*/
return NEEDS_RETRY;
return ADD_TO_MLQUEUE;
if (sense_hdr->asc == 0x2a && sense_hdr->ascq == 0x06) {
/*
* ALUA state changed
*/
return NEEDS_RETRY;
return ADD_TO_MLQUEUE;
}
if (sense_hdr->asc == 0x2a && sense_hdr->ascq == 0x07) {
/*
* Implicit ALUA state transition failed
*/
return NEEDS_RETRY;
return ADD_TO_MLQUEUE;
}
break;
}
@ -490,7 +490,7 @@ static int alua_stpg(struct scsi_device *sdev, int state,
if (!err)
return SCSI_DH_IO;
err = alua_check_sense(sdev, &sense_hdr);
if (retry > 0 && err == NEEDS_RETRY) {
if (retry > 0 && err == ADD_TO_MLQUEUE) {
retry--;
goto retry;
}
@ -535,7 +535,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_dh_data *h)
return SCSI_DH_IO;
err = alua_check_sense(sdev, &sense_hdr);
if (err == NEEDS_RETRY)
if (err == ADD_TO_MLQUEUE)
goto retry;
sdev_printk(KERN_INFO, sdev,
"%s: rtpg sense code %02x/%02x/%02x\n",

4
drivers/scsi/device_handler/scsi_dh_emc.c
View File

@ -439,7 +439,7 @@ static int clariion_check_sense(struct scsi_device *sdev,
* Unit Attention Code. This is the first IO
* to the new path, so just retry.
*/
return NEEDS_RETRY;
return ADD_TO_MLQUEUE;
break;
}
@ -514,7 +514,7 @@ retry:
return SCSI_DH_IO;
err = clariion_check_sense(sdev, &sshdr);
if (retry > 0 && err == NEEDS_RETRY) {
if (retry > 0 && err == ADD_TO_MLQUEUE) {
retry--;
goto retry;
}

4
drivers/scsi/device_handler/scsi_dh_rdac.c
View File

@ -551,7 +551,7 @@ static int rdac_check_sense(struct scsi_device *sdev,
*
* Just retry and wait.
*/
return NEEDS_RETRY;
return ADD_TO_MLQUEUE;
break;
case ILLEGAL_REQUEST:
if (sense_hdr->asc == 0x94 && sense_hdr->ascq == 0x01) {
@ -568,7 +568,7 @@ static int rdac_check_sense(struct scsi_device *sdev,
/*
* Power On, Reset, or Bus Device Reset, just retry.
*/
return NEEDS_RETRY;
return ADD_TO_MLQUEUE;
break;
}
/* success just means we do not care what scsi-ml does */