[PATCH] Remove ->waiting member from struct request
As the comments indicates in blkdev.h, we can fold it into ->end_io_data
usage as that is really what ->waiting is. Fixup the users of
blk_end_sync_rq().
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/block/elevator.c b/block/elevator.c
index cbbc36b..924b81b 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -67,8 +67,7 @@
/*
* same device and no special stuff set, merge is ok
*/
- if (rq->rq_disk == bio->bi_bdev->bd_disk &&
- !rq->waiting && !rq->special)
+ if (rq->rq_disk == bio->bi_bdev->bd_disk && !rq->special)
return 1;
return 0;
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index d388486..3b6aad2 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -291,7 +291,6 @@
rq->buffer = NULL;
rq->ref_count = 1;
rq->q = q;
- rq->waiting = NULL;
rq->special = NULL;
rq->data_len = 0;
rq->data = NULL;
@@ -451,6 +450,7 @@
rq->cmd_flags = REQ_HARDBARRIER;
rq_init(q, rq);
rq->elevator_private = NULL;
+ rq->elevator_private2 = NULL;
rq->rq_disk = q->bar_rq.rq_disk;
rq->rl = NULL;
rq->end_io = end_io;
@@ -479,6 +479,7 @@
rq->cmd_flags |= REQ_RW;
rq->cmd_flags |= q->ordered & QUEUE_ORDERED_FUA ? REQ_FUA : 0;
rq->elevator_private = NULL;
+ rq->elevator_private2 = NULL;
rq->rl = NULL;
init_request_from_bio(rq, q->orig_bar_rq->bio);
rq->end_io = bar_end_io;
@@ -2569,10 +2570,9 @@
rq->sense_len = 0;
}
- rq->waiting = &wait;
+ rq->end_io_data = &wait;
blk_execute_rq_nowait(q, bd_disk, rq, at_head, blk_end_sync_rq);
wait_for_completion(&wait);
- rq->waiting = NULL;
if (rq->errors)
err = -EIO;
@@ -2736,9 +2736,9 @@
*/
void blk_end_sync_rq(struct request *rq, int error)
{
- struct completion *waiting = rq->waiting;
+ struct completion *waiting = rq->end_io_data;
- rq->waiting = NULL;
+ rq->end_io_data = NULL;
__blk_put_request(rq->q, rq);
/*
@@ -2801,7 +2801,7 @@
if (rq_data_dir(req) != rq_data_dir(next)
|| req->rq_disk != next->rq_disk
- || next->waiting || next->special)
+ || next->special)
return 0;
/*
@@ -2886,7 +2886,6 @@
req->nr_phys_segments = bio_phys_segments(req->q, bio);
req->nr_hw_segments = bio_hw_segments(req->q, bio);
req->buffer = bio_data(bio); /* see ->buffer comment above */
- req->waiting = NULL;
req->bio = req->biotail = bio;
req->ioprio = bio_prio(bio);
req->rq_disk = bio->bi_bdev->bd_disk;
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index a360215..2568640 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -3331,7 +3331,7 @@
Command->DmaDirection = PCI_DMA_TODEVICE;
Command->CommandType = DAC960_WriteCommand;
}
- Command->Completion = Request->waiting;
+ Command->Completion = Request->end_io_data;
Command->LogicalDriveNumber = (long)Request->rq_disk->private_data;
Command->BlockNumber = Request->sector;
Command->BlockCount = Request->nr_sectors;
diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
index 12ff1a2..500d2eb 100644
--- a/drivers/block/paride/pd.c
+++ b/drivers/block/paride/pd.c
@@ -722,11 +722,10 @@
rq.rq_status = RQ_ACTIVE;
rq.rq_disk = disk->gd;
rq.ref_count = 1;
- rq.waiting = &wait;
+ rq.end_io_data = &wait;
rq.end_io = blk_end_sync_rq;
blk_insert_request(disk->gd->queue, &rq, 0, func);
wait_for_completion(&wait);
- rq.waiting = NULL;
if (rq.errors)
err = -EIO;
blk_put_request(&rq);
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 42891d2..888d1ac 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -375,7 +375,7 @@
rq->cmd_len = COMMAND_SIZE(rq->cmd[0]);
rq->ref_count++;
- rq->waiting = &wait;
+ rq->end_io_data = &wait;
rq->end_io = blk_end_sync_rq;
elv_add_request(q, rq, ELEVATOR_INSERT_BACK, 1);
generic_unplug_device(q);
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 3436b1f..a3ffb04 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -141,7 +141,7 @@
static void ide_complete_power_step(ide_drive_t *drive, struct request *rq, u8 stat, u8 error)
{
- struct request_pm_state *pm = rq->end_io_data;
+ struct request_pm_state *pm = rq->data;
if (drive->media != ide_disk)
return;
@@ -164,7 +164,7 @@
static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *rq)
{
- struct request_pm_state *pm = rq->end_io_data;
+ struct request_pm_state *pm = rq->data;
ide_task_t *args = rq->special;
memset(args, 0, sizeof(*args));
@@ -421,7 +421,7 @@
}
}
} else if (blk_pm_request(rq)) {
- struct request_pm_state *pm = rq->end_io_data;
+ struct request_pm_state *pm = rq->data;
#ifdef DEBUG_PM
printk("%s: complete_power_step(step: %d, stat: %x, err: %x)\n",
drive->name, rq->pm->pm_step, stat, err);
@@ -933,7 +933,7 @@
static void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
{
- struct request_pm_state *pm = rq->end_io_data;
+ struct request_pm_state *pm = rq->data;
if (blk_pm_suspend_request(rq) &&
pm->pm_step == ide_pm_state_start_suspend)
@@ -1018,7 +1018,7 @@
rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
return execute_drive_cmd(drive, rq);
else if (blk_pm_request(rq)) {
- struct request_pm_state *pm = rq->end_io_data;
+ struct request_pm_state *pm = rq->data;
#ifdef DEBUG_PM
printk("%s: start_power_step(step: %d)\n",
drive->name, rq->pm->pm_step);
@@ -1718,7 +1718,7 @@
*/
if (must_wait) {
rq->ref_count++;
- rq->waiting = &wait;
+ rq->end_io_data = &wait;
rq->end_io = blk_end_sync_rq;
}
@@ -1736,7 +1736,6 @@
err = 0;
if (must_wait) {
wait_for_completion(&wait);
- rq->waiting = NULL;
if (rq->errors)
err = -EIO;
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 643e4b9..66f9678 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -2773,7 +2773,7 @@
return;
}
#endif /* IDETAPE_DEBUG_BUGS */
- rq->waiting = &wait;
+ rq->end_io_data = &wait;
rq->end_io = blk_end_sync_rq;
spin_unlock_irq(&tape->spinlock);
wait_for_completion(&wait);
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 9384a3f..2b1a138 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -1219,7 +1219,7 @@
memset(&args, 0, sizeof(args));
rq.cmd_type = REQ_TYPE_PM_SUSPEND;
rq.special = &args;
- rq.end_io_data = &rqpm;
+ rq.data = &rqpm;
rqpm.pm_step = ide_pm_state_start_suspend;
if (mesg.event == PM_EVENT_PRETHAW)
mesg.event = PM_EVENT_FREEZE;
@@ -1240,7 +1240,7 @@
memset(&args, 0, sizeof(args));
rq.cmd_type = REQ_TYPE_PM_RESUME;
rq.special = &args;
- rq.end_io_data = &rqpm;
+ rq.data = &rqpm;
rqpm.pm_step = ide_pm_state_start_resume;
rqpm.pm_state = PM_EVENT_ON;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index d2dc171..604f231 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -266,7 +266,6 @@
request_queue_t *q;
struct request_list *rl;
- struct completion *waiting;
void *special;
char *buffer;
@@ -285,7 +284,7 @@
int retries;
/*
- * completion callback. end_io_data should be folded in with waiting
+ * completion callback.
*/
rq_end_io_fn *end_io;
void *end_io_data;