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-rw-r--r--Documentation/block/biodoc.txt4
-rw-r--r--block/blk-core.c4
-rw-r--r--drivers/scsi/53c700.c6
-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_osm.c2
-rw-r--r--drivers/scsi/scsi_lib.c13
-rw-r--r--drivers/usb/storage/uas.c2
-rw-r--r--include/linux/blkdev.h1
-rw-r--r--include/scsi/scsi_cmnd.h4
-rw-r--r--include/scsi/scsi_tcq.h6
9 files changed, 22 insertions, 20 deletions
diff --git a/Documentation/block/biodoc.txt b/Documentation/block/biodoc.txt
index 2101e718670..6b972b28779 100644
--- a/Documentation/block/biodoc.txt
+++ b/Documentation/block/biodoc.txt
@@ -827,10 +827,6 @@ but in the event of any barrier requests in the tag queue we need to ensure
that requests are restarted in the order they were queue. This may happen
if the driver needs to use blk_queue_invalidate_tags().
-Tagging also defines a new request flag, REQ_QUEUED. This is set whenever
-a request is currently tagged. You should not use this flag directly,
-blk_rq_tagged(rq) is the portable way to do so.
-
3.3 I/O Submission
The routine submit_bio() is used to submit a single io. Higher level i/o
diff --git a/block/blk-core.c b/block/blk-core.c
index 0421b53e643..2e7424b4294 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1266,7 +1266,7 @@ void blk_requeue_request(struct request_queue *q, struct request *rq)
blk_clear_rq_complete(rq);
trace_block_rq_requeue(q, rq);
- if (blk_rq_tagged(rq))
+ if (rq->cmd_flags & REQ_QUEUED)
blk_queue_end_tag(q, rq);
BUG_ON(blk_queued_rq(rq));
@@ -2554,7 +2554,7 @@ EXPORT_SYMBOL_GPL(blk_unprep_request);
*/
void blk_finish_request(struct request *req, int error)
{
- if (blk_rq_tagged(req))
+ if (req->cmd_flags & REQ_QUEUED)
blk_queue_end_tag(req->q, req);
BUG_ON(blk_queued_rq(req));
diff --git a/drivers/scsi/53c700.c b/drivers/scsi/53c700.c
index 474cc6dc98e..5143d3213e8 100644
--- a/drivers/scsi/53c700.c
+++ b/drivers/scsi/53c700.c
@@ -1767,7 +1767,7 @@ NCR_700_queuecommand_lck(struct scsi_cmnd *SCp, void (*done)(struct scsi_cmnd *)
*/
if(NCR_700_get_depth(SCp->device) != 0
&& (!(hostdata->tag_negotiated & (1<<scmd_id(SCp)))
- || !blk_rq_tagged(SCp->request))) {
+ || !(SCp->flags & SCMD_TAGGED))) {
CDEBUG(KERN_ERR, SCp, "has non zero depth %d\n",
NCR_700_get_depth(SCp->device));
return SCSI_MLQUEUE_DEVICE_BUSY;
@@ -1795,7 +1795,7 @@ NCR_700_queuecommand_lck(struct scsi_cmnd *SCp, void (*done)(struct scsi_cmnd *)
printk("53c700: scsi%d, command ", SCp->device->host->host_no);
scsi_print_command(SCp);
#endif
- if(blk_rq_tagged(SCp->request)
+ if ((SCp->flags & SCMD_TAGGED)
&& (hostdata->tag_negotiated &(1<<scmd_id(SCp))) == 0
&& NCR_700_get_tag_neg_state(SCp->device) == NCR_700_START_TAG_NEGOTIATION) {
scmd_printk(KERN_ERR, SCp, "Enabling Tag Command Queuing\n");
@@ -1809,7 +1809,7 @@ NCR_700_queuecommand_lck(struct scsi_cmnd *SCp, void (*done)(struct scsi_cmnd *)
*
* FIXME: This will royally screw up on multiple LUN devices
* */
- if(!blk_rq_tagged(SCp->request)
+ if (!(SCp->flags & SCMD_TAGGED)
&& (hostdata->tag_negotiated &(1<<scmd_id(SCp)))) {
scmd_printk(KERN_INFO, SCp, "Disabling Tag Command Queuing\n");
hostdata->tag_negotiated &= ~(1<<scmd_id(SCp));
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index d2c9bf39033..63bae7c65c9 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -1447,7 +1447,7 @@ ahc_linux_run_command(struct ahc_softc *ahc, struct ahc_linux_device *dev,
* we are storing a full busy target *lun*
* table in SCB space.
*/
- if (!blk_rq_tagged(cmd->request)
+ if (!(cmd->flags & SCMD_TAGGED)
&& (ahc->features & AHC_SCB_BTT) == 0) {
int target_offset;
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 38f8c85957b..994eb083fff 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1740,7 +1740,7 @@ static void scsi_request_fn(struct request_queue *q)
* we add the dev to the starved list so it eventually gets
* a run when a tag is freed.
*/
- if (blk_queue_tagged(q) && !blk_rq_tagged(req)) {
+ if (blk_queue_tagged(q) && !(req->cmd_flags & REQ_QUEUED)) {
spin_lock_irq(shost->host_lock);
if (list_empty(&sdev->starved_entry))
list_add_tail(&sdev->starved_entry,
@@ -1754,6 +1754,11 @@ static void scsi_request_fn(struct request_queue *q)
if (!scsi_host_queue_ready(q, shost, sdev))
goto host_not_ready;
+
+ if (sdev->simple_tags)
+ cmd->flags |= SCMD_TAGGED;
+ else
+ cmd->flags &= ~SCMD_TAGGED;
/*
* Finally, initialize any error handling parameters, and set up
@@ -1908,10 +1913,10 @@ static int scsi_queue_rq(struct blk_mq_hw_ctx *hctx, struct request *req,
blk_mq_start_request(req);
}
- if (blk_queue_tagged(q))
- req->cmd_flags |= REQ_QUEUED;
+ if (sdev->simple_tags)
+ cmd->flags |= SCMD_TAGGED;
else
- req->cmd_flags &= ~REQ_QUEUED;
+ cmd->flags &= ~SCMD_TAGGED;
scsi_init_cmd_errh(cmd);
cmd->scsi_done = scsi_mq_done;
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index 89b24349269..b38bc1318a6 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -181,7 +181,7 @@ static int uas_get_tag(struct scsi_cmnd *cmnd)
{
int tag;
- if (blk_rq_tagged(cmnd->request))
+ if (cmnd->flags & SCMD_TAGGED)
tag = cmnd->request->tag + 2;
else
tag = 1;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index aac0f9ea952..6d76b8b4aa2 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1136,7 +1136,6 @@ static inline bool blk_needs_flush_plug(struct task_struct *tsk)
/*
* tag stuff
*/
-#define blk_rq_tagged(rq) ((rq)->cmd_flags & REQ_QUEUED)
extern int blk_queue_start_tag(struct request_queue *, struct request *);
extern struct request *blk_queue_find_tag(struct request_queue *, int);
extern void blk_queue_end_tag(struct request_queue *, struct request *);
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 522a5f27f55..e119142e565 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -53,6 +53,9 @@ struct scsi_pointer {
volatile int phase;
};
+/* for scmd->flags */
+#define SCMD_TAGGED (1 << 0)
+
struct scsi_cmnd {
struct scsi_device *device;
struct list_head list; /* scsi_cmnd participates in queue lists */
@@ -132,6 +135,7 @@ struct scsi_cmnd {
* to be at an address < 16Mb). */
int result; /* Status code from lower level driver */
+ int flags; /* Command flags */
unsigned char tag; /* SCSI-II queued command tag */
};
diff --git a/include/scsi/scsi_tcq.h b/include/scsi/scsi_tcq.h
index 1712dab6e00..032df74b66d 100644
--- a/include/scsi/scsi_tcq.h
+++ b/include/scsi/scsi_tcq.h
@@ -101,11 +101,9 @@ static inline void scsi_deactivate_tcq(struct scsi_device *sdev, int depth)
**/
static inline int scsi_populate_tag_msg(struct scsi_cmnd *cmd, char *msg)
{
- struct request *req = cmd->request;
-
- if (blk_rq_tagged(req)) {
+ if (cmd->flags & SCMD_TAGGED) {
*msg++ = MSG_SIMPLE_TAG;
- *msg++ = req->tag;
+ *msg++ = cmd->request->tag;
return 2;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-29 10:29:01 +0000