aboutsummaryrefslogtreecommitdiffstatshomepage
diff options
context:
space:
mode:
Diffstat
-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 2101e718670d..6b972b287795 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 0421b53e6431..2e7424b42947 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 474cc6dc98e2..5143d3213e86 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 d2c9bf39033d..63bae7c65c9f 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 38f8c85957b6..994eb083fff9 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 89b24349269e..b38bc1318a60 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 aac0f9ea952a..6d76b8b4aa2b 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 522a5f27f553..e119142e565e 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 1712dab6e00e..032df74b66d7 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;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.