tree 200694afba54d5b9cec984e52689943766eea119
parent 91bbfbda8d41f834c70c47d6f8c95245c90019e5
author <[EMAIL PROTECTED]> Wed, 13 Apr 2005 03:49:09 -0500
committer James Bottomley <[EMAIL PROTECTED]> Sun, 17 Apr 2005 06:16:08 -0500
scsi: add DID_REQUEUE to the error handling
We have a DID_IMM_RETRY to require a retry at once, but we could do with
a DID_REQUEUE to instruct the mid-layer to treat this command in the
same manner as QUEUE_FULL or BUSY (i.e. halt the submission until
another command returns ... or the queue pressure builds if there are no
outstanding commands).
Signed-off-by: James Bottomley <[EMAIL PROTECTED]>
scsi/scsi_error.c | 3 +++
scsi/scsi.h | 2 ++
2 files changed, 5 insertions(+)
Index: drivers/scsi/scsi_error.c
===================================================================
--- ae603f3613b47a0312034000d3e44276a6513d6d/drivers/scsi/scsi_error.c
(mode:100644 sha1:13bac93fc3971260b5fd47f19cfd478285d35c31)
+++ 200694afba54d5b9cec984e52689943766eea119/drivers/scsi/scsi_error.c
(mode:100644 sha1:203a0812508a1962c2c9d58020d3a6a9bc61aaf5)
@@ -1306,6 +1306,9 @@
case DID_IMM_RETRY:
return NEEDS_RETRY;
+ case DID_REQUEUE:
+ return ADD_TO_MLQUEUE;
+
case DID_ERROR:
if (msg_byte(scmd->result) == COMMAND_COMPLETE &&
status_byte(scmd->result) == RESERVATION_CONFLICT)
Index: include/scsi/scsi.h
===================================================================
--- ae603f3613b47a0312034000d3e44276a6513d6d/include/scsi/scsi.h (mode:100644
sha1:3507b3d7c0ebeed2fddc6bb8ac08e782d4063329)
+++ 200694afba54d5b9cec984e52689943766eea119/include/scsi/scsi.h (mode:100644
sha1:659ecf48fb4ac3777001cd71f887a5fbe569a6ec)
@@ -295,6 +295,8 @@
#define DID_PASSTHROUGH 0x0a /* Force command past mid-layer */
#define DID_SOFT_ERROR 0x0b /* The low level driver just wish a retry */
#define DID_IMM_RETRY 0x0c /* Retry without decrementing retry count */
+#define DID_REQUEUE 0x0d /* Requeue command (no immediate retry) also
+ * without decrementing the retry count */
#define DRIVER_OK 0x00 /* Driver status */
/*
-
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