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Subject[RFC PATCH 3/3] blk_end_request: caller change
From
This patch replaces caller's end_that_request_* to blk_end_request.

Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
---
block/elevator.c | 3 -
block/ll_rw_blk.c | 26 +++++++-----
drivers/block/DAC960.c | 15 +++++--
drivers/block/cciss.c | 3 -
drivers/block/cpqarray.c | 3 -
drivers/block/floppy.c | 18 ++++++--
drivers/block/nbd.c | 4 -
drivers/block/sx8.c | 5 --
drivers/block/ub.c | 3 -
drivers/block/viodasd.c | 15 +++++--
drivers/cdrom/cdu31a.c | 20 ++++++---
drivers/ide/ide-cd.c | 81 +++++++++++++++++++++++++++++-----------
drivers/ide/ide-io.c | 52 ++++++++++++++++++-------
drivers/message/i2o/i2o_block.c | 19 ++++++---
drivers/mmc/mmc_block.c | 36 +++++++++--------
drivers/s390/block/dasd.c | 14 +++++-
drivers/s390/char/tape_block.c | 3 -
drivers/scsi/ide-scsi.c | 5 +-
drivers/scsi/scsi_lib.c | 32 ++++++++++-----
19 files changed, 239 insertions(+), 118 deletions(-)

diff -rupN 2-helper-implementation/block/elevator.c 3-caller-change/block/elevator.c
--- 2-helper-implementation/block/elevator.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/block/elevator.c 2007-01-10 11:22:59.000000000 -0500
@@ -729,8 +729,7 @@ struct request *elv_next_request(request

blkdev_dequeue_request(rq);
rq->cmd_flags |= REQ_QUIET;
- end_that_request_chunk(rq, 0, nr_bytes);
- end_that_request_last(rq, 0);
+ blk_end_request(rq, 0, nr_bytes, 1, NULL, NULL);
} else {
printk(KERN_ERR "%s: bad return=%d\n", __FUNCTION__,
ret);
diff -rupN 2-helper-implementation/block/ll_rw_blk.c 3-caller-change/block/ll_rw_blk.c
--- 2-helper-implementation/block/ll_rw_blk.c 2007-01-10 11:17:08.000000000 -0500
+++ 3-caller-change/block/ll_rw_blk.c 2007-01-10 11:25:57.000000000 -0500
@@ -376,8 +376,7 @@ void blk_ordered_complete_seq(request_qu

q->ordseq = 0;

- end_that_request_first(rq, uptodate, rq->hard_nr_sectors);
- end_that_request_last(rq, uptodate);
+ blk_end_request(rq, uptodate, rq->hard_nr_sectors << 9, 1, NULL, NULL);
}

static int blk_uptodate_to_error(int uptodate)
@@ -534,9 +533,9 @@ int blk_do_ordered(request_queue_t *q, s
* ORDERED_NONE while this request is on it.
*/
blkdev_dequeue_request(rq);
- end_that_request_first(rq, -EOPNOTSUPP,
- rq->hard_nr_sectors);
- end_that_request_last(rq, -EOPNOTSUPP);
+ blk_end_request(rq, -EOPNOTSUPP,
+ rq->hard_nr_sectors << 9, 1, NULL,
+ NULL);
*rqp = NULL;
return 0;
}
@@ -3524,13 +3523,20 @@ void end_that_request_last(struct reques

EXPORT_SYMBOL(end_that_request_last);

+static int end_request_callback(void *arg)
+{
+ struct request *req = (struct request *)arg;
+
+ add_disk_randomness(req->rq_disk);
+ blkdev_dequeue_request(req);
+
+ return 0;
+}
+
void end_request(struct request *req, int uptodate)
{
- if (!end_that_request_first(req, uptodate, req->hard_cur_sectors)) {
- add_disk_randomness(req->rq_disk);
- blkdev_dequeue_request(req);
- end_that_request_last(req, uptodate);
- }
+ blk_end_request(req, uptodate, req->hard_cur_sectors << 9, 1,
+ end_request_callback, (void *)req);
}

EXPORT_SYMBOL(end_request);
diff -rupN 2-helper-implementation/drivers/block/cciss.c 3-caller-change/drivers/block/cciss.c
--- 2-helper-implementation/drivers/block/cciss.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/block/cciss.c 2007-01-10 11:43:56.000000000 -0500
@@ -1312,7 +1312,8 @@ static void cciss_softirq_done(struct re

add_disk_randomness(rq->rq_disk);
spin_lock_irqsave(&h->lock, flags);
- end_that_request_last(rq, rq->errors);
+ blk_end_request(rq, rq->errors, rq->hard_cur_sectors << 9, 1, NULL,
+ NULL);
cmd_free(h, cmd, 1);
cciss_check_queues(h);
spin_unlock_irqrestore(&h->lock, flags);
diff -rupN 2-helper-implementation/drivers/block/cpqarray.c 3-caller-change/drivers/block/cpqarray.c
--- 2-helper-implementation/drivers/block/cpqarray.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/block/cpqarray.c 2007-01-10 11:26:37.000000000 -0500
@@ -1041,7 +1041,8 @@ static inline void complete_command(cmdl
add_disk_randomness(rq->rq_disk);

DBGPX(printk("Done with %p\n", rq););
- end_that_request_last(rq, ok ? 1 : -EIO);
+ blk_end_request(rq, ok ? 1 : -EIO, rq->hard_cur_sectors << 9, 1, NULL,
+ NULL);
}

/*
diff -rupN 2-helper-implementation/drivers/block/DAC960.c 3-caller-change/drivers/block/DAC960.c
--- 2-helper-implementation/drivers/block/DAC960.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/block/DAC960.c 2007-01-10 11:26:50.000000000 -0500
@@ -3440,6 +3440,15 @@ static void DAC960_RequestFunction(struc
DAC960_ProcessRequest(RequestQueue->queuedata);
}

+static int DAC960_cr_callback(void *arg)
+{
+ struct request *Request = (struct request *)arg;
+
+ add_disk_randomness(Request->rq_disk);
+
+ return 0;
+}
+
/*
DAC960_ProcessCompletedBuffer performs completion processing for an
individual Buffer.
@@ -3458,10 +3467,8 @@ static inline boolean DAC960_ProcessComp
pci_unmap_sg(Command->Controller->PCIDevice, Command->cmd_sglist,
Command->SegmentCount, Command->DmaDirection);

- if (!end_that_request_first(Request, UpToDate, Command->BlockCount)) {
- add_disk_randomness(Request->rq_disk);
- end_that_request_last(Request, UpToDate);
-
+ if (!blk_end_request(Request, UpToDate, Command->BlockCount << 9, 1,
+ DAC960_cr_callback, (void *)Request)) {
if (Command->Completion) {
complete(Command->Completion);
Command->Completion = NULL;
diff -rupN 2-helper-implementation/drivers/block/floppy.c 3-caller-change/drivers/block/floppy.c
--- 2-helper-implementation/drivers/block/floppy.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/block/floppy.c 2007-01-10 11:27:06.000000000 -0500
@@ -2277,6 +2277,17 @@ static int do_format(int drive, struct f
* =============================
*/

+static int floppy_er_callback(void *arg)
+{
+ struct request *req = (struct request *)arg;
+
+ add_disk_randomness(req->rq_disk);
+ floppy_off((long)req->rq_disk->private_data);
+ blkdev_dequeue_request(req);
+
+ return 0;
+}
+
static void floppy_end_request(struct request *req, int uptodate)
{
unsigned int nr_sectors = current_count_sectors;
@@ -2284,12 +2295,9 @@ static void floppy_end_request(struct re
/* current_count_sectors can be zero if transfer failed */
if (!uptodate)
nr_sectors = req->current_nr_sectors;
- if (end_that_request_first(req, uptodate, nr_sectors))
+ if (blk_end_request(req, uptodate, nr_sectors << 9, 1,
+ floppy_er_callback, (void *)req))
return;
- add_disk_randomness(req->rq_disk);
- floppy_off((long)req->rq_disk->private_data);
- blkdev_dequeue_request(req);
- end_that_request_last(req, uptodate);

/* We're done with the request */
current_req = NULL;
diff -rupN 2-helper-implementation/drivers/block/nbd.c 3-caller-change/drivers/block/nbd.c
--- 2-helper-implementation/drivers/block/nbd.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/block/nbd.c 2007-01-10 11:27:16.000000000 -0500
@@ -107,9 +107,7 @@ static void nbd_end_request(struct reque
req, uptodate? "done": "failed");

spin_lock_irqsave(q->queue_lock, flags);
- if (!end_that_request_first(req, uptodate, req->nr_sectors)) {
- end_that_request_last(req, uptodate);
- }
+ blk_end_request(req, uptodate, req->nr_sectors << 9, 1, NULL, NULL);
spin_unlock_irqrestore(q->queue_lock, flags);
}

diff -rupN 2-helper-implementation/drivers/block/sx8.c 3-caller-change/drivers/block/sx8.c
--- 2-helper-implementation/drivers/block/sx8.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/block/sx8.c 2007-01-10 11:27:25.000000000 -0500
@@ -747,11 +747,10 @@ static inline void carm_end_request_queu
struct request *req = crq->rq;
int rc;

- rc = end_that_request_first(req, uptodate, req->hard_nr_sectors);
+ rc = blk_end_request(req, uptodate, req->hard_nr_sectors << 9, 1, NULL,
+ NULL);
assert(rc == 0);

- end_that_request_last(req, uptodate);
-
rc = carm_put_request(host, crq);
assert(rc == 0);
}
diff -rupN 2-helper-implementation/drivers/block/ub.c 3-caller-change/drivers/block/ub.c
--- 2-helper-implementation/drivers/block/ub.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/block/ub.c 2007-01-10 11:27:34.000000000 -0500
@@ -814,8 +814,7 @@ static void ub_end_rq(struct request *rq
uptodate = 0;
rq->errors = scsi_status;
}
- end_that_request_first(rq, uptodate, rq->hard_nr_sectors);
- end_that_request_last(rq, uptodate);
+ blk_end_request(rq, uptodate, rq->hard_nr_sectors << 9, 1, NULL, NULL);
}

static int ub_rw_cmd_retry(struct ub_dev *sc, struct ub_lun *lun,
diff -rupN 2-helper-implementation/drivers/block/viodasd.c 3-caller-change/drivers/block/viodasd.c
--- 2-helper-implementation/drivers/block/viodasd.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/block/viodasd.c 2007-01-10 11:27:44.000000000 -0500
@@ -269,16 +269,23 @@ static struct block_device_operations vi
.getgeo = viodasd_getgeo,
};

+static int viodasd_er_callback(void *arg)
+{
+ struct request *req = (struct request *)arg;
+
+ add_disk_randomness(req->rq_disk);
+
+ return 0;
+}
+
/*
* End a request
*/
static void viodasd_end_request(struct request *req, int uptodate,
int num_sectors)
{
- if (end_that_request_first(req, uptodate, num_sectors))
- return;
- add_disk_randomness(req->rq_disk);
- end_that_request_last(req, uptodate);
+ blk_end_request(req, uptodate, num_sectors << 9, 1,
+ viodasd_er_callback, (void *)req);
}

/*
diff -rupN 2-helper-implementation/drivers/cdrom/cdu31a.c 3-caller-change/drivers/cdrom/cdu31a.c
--- 2-helper-implementation/drivers/cdrom/cdu31a.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/cdrom/cdu31a.c 2007-01-10 11:28:02.000000000 -0500
@@ -1283,6 +1283,18 @@ read_data_block(char *buffer,
}


+static int do_cdu31a_rq_callback(void *arg)
+{
+ struct request *req = (struct request *)arg;
+ request_queue_t *q = req->q;
+
+ spin_lock_irq(q->queue_lock);
+ blkdev_dequeue_request(req);
+ spin_unlock_irq(q->queue_lock);
+
+ return 0;
+}
+
/*
* The OS calls this to perform a read or write operation to the drive.
* Write obviously fail. Reads to a read ahead of sony_buffer_size
@@ -1400,12 +1412,8 @@ static void do_cdu31a_request(request_qu
read_data_block(req->buffer, block, nblock, res_reg, &res_size);

if (res_reg[0] != 0x20) {
- if (!end_that_request_first(req, 1, nblock)) {
- spin_lock_irq(q->queue_lock);
- blkdev_dequeue_request(req);
- end_that_request_last(req, 1);
- spin_unlock_irq(q->queue_lock);
- }
+ blk_end_request(req, 1, nblock << 9, 0,
+ do_cdu31a_rq_callback, (void *)req);
continue;
}

diff -rupN 2-helper-implementation/drivers/ide/ide-cd.c 3-caller-change/drivers/ide/ide-cd.c
--- 2-helper-implementation/drivers/ide/ide-cd.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/ide/ide-cd.c 2007-01-10 11:28:19.000000000 -0500
@@ -655,9 +655,8 @@ static void cdrom_end_request (ide_drive
BUG();
} else {
spin_lock_irqsave(&ide_lock, flags);
- end_that_request_chunk(failed, 0,
- failed->data_len);
- end_that_request_last(failed, 0);
+ blk_end_request(failed, 0, failed->data_len, 1,
+ NULL, NULL);
spin_unlock_irqrestore(&ide_lock, flags);
}
} else
@@ -1658,6 +1657,52 @@ static void post_transform_command(struc
}
}

+static void cdrom_newpc_intr_callback_common(struct request *rq,
+ ide_drive_t *drive,
+ spinlock_t *ide_lock)
+{
+ unsigned long flags = 0UL;
+
+ if (!rq->data_len)
+ post_transform_command(rq);
+
+ spin_lock_irqsave(ide_lock, flags);
+ blkdev_dequeue_request(rq);
+ HWGROUP(drive)->rq = NULL;
+ spin_unlock_irqrestore(ide_lock, flags);
+}
+
+static int cdrom_newpc_intr_dma_callback(void *arg)
+{
+ void **argv = (void **)arg;
+ struct request *rq = (struct request *)*argv++;
+ ide_drive_t *drive = (ide_drive_t *)argv++;
+ spinlock_t *ide_lock = (spinlock_t *)argv;
+
+ rq->data_len = 0;
+
+ cdrom_newpc_intr_callback_common(rq, drive, ide_lock);
+
+ return 0;
+}
+
+static int cdrom_newpc_intr_pio_callback(void *arg)
+{
+ void **argv = (void **)arg;
+ struct request *rq = (struct request *)*argv++;
+ ide_drive_t *drive = (ide_drive_t *)argv++;
+ spinlock_t *ide_lock = (spinlock_t *)argv;
+
+ cdrom_newpc_intr_callback_common(rq, drive, ide_lock);
+
+ return 0;
+}
+
+static int cdrom_newpc_intr_dummy_callback(void *arg)
+{
+ return 1;
+}
+
typedef void (xfer_func_t)(ide_drive_t *, void *, u32);

/*
@@ -1673,7 +1718,7 @@ static ide_startstop_t cdrom_newpc_intr(
int dma_error, dma, stat, ireason, len, thislen;
u8 lowcyl, highcyl;
xfer_func_t *xferfunc;
- unsigned long flags;
+ void *arg[] = {(void *)rq, (void *)drive, (void *)&ide_lock};

/* Check for errors. */
dma_error = 0;
@@ -1696,9 +1741,9 @@ static ide_startstop_t cdrom_newpc_intr(
return ide_error(drive, "dma error", stat);
}

- end_that_request_chunk(rq, 1, rq->data_len);
- rq->data_len = 0;
- goto end_request;
+ blk_end_request(rq, 1, rq->data_len, 0,
+ cdrom_newpc_intr_dma_callback, arg);
+ return ide_stopped;
}

/*
@@ -1716,8 +1761,12 @@ static ide_startstop_t cdrom_newpc_intr(
/*
* If DRQ is clear, the command has completed.
*/
- if ((stat & DRQ_STAT) == 0)
- goto end_request;
+ if ((stat & DRQ_STAT) == 0) {
+ blk_end_request(rq, 1, rq->hard_cur_sectors << 9, 0,
+ cdrom_newpc_intr_pio_callback, arg);
+
+ return ide_stopped;
+ }

/*
* check which way to transfer data
@@ -1770,7 +1819,8 @@ static ide_startstop_t cdrom_newpc_intr(
rq->data_len -= blen;

if (rq->bio)
- end_that_request_chunk(rq, 1, blen);
+ blk_end_request(rq, 1, blen, 1,
+ cdrom_newpc_intr_dummy_callback, NULL);
else
rq->data += blen;
}
@@ -1791,17 +1841,6 @@ static ide_startstop_t cdrom_newpc_intr(

ide_set_handler(drive, cdrom_newpc_intr, rq->timeout, NULL);
return ide_started;
-
-end_request:
- if (!rq->data_len)
- post_transform_command(rq);
-
- spin_lock_irqsave(&ide_lock, flags);
- blkdev_dequeue_request(rq);
- end_that_request_last(rq, 1);
- HWGROUP(drive)->rq = NULL;
- spin_unlock_irqrestore(&ide_lock, flags);
- return ide_stopped;
}

static ide_startstop_t cdrom_write_intr(ide_drive_t *drive)
diff -rupN 2-helper-implementation/drivers/ide/ide-io.c 3-caller-change/drivers/ide/ide-io.c
--- 2-helper-implementation/drivers/ide/ide-io.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/ide/ide-io.c 2007-01-10 11:28:35.000000000 -0500
@@ -54,10 +54,25 @@
#include <asm/io.h>
#include <asm/bitops.h>

+static int __ide_er_callback(void *arg)
+{
+ void **argv = (void **)arg;
+ ide_drive_t *drive = (ide_drive_t *)*argv++;
+ struct request *rq = (struct request *)*argv;
+
+ add_disk_randomness(rq->rq_disk);
+ if (!list_empty(&rq->queuelist))
+ blkdev_dequeue_request(rq);
+ HWGROUP(drive)->rq = NULL;
+
+ return 0;
+}
+
static int __ide_end_request(ide_drive_t *drive, struct request *rq,
int uptodate, int nr_sectors)
{
int ret = 1;
+ void *arg[] = {(void *)rq, (void *)drive};

/*
* if failfast is set on a request, override number of sectors and
@@ -78,14 +93,9 @@ static int __ide_end_request(ide_drive_t
HWGROUP(drive)->hwif->ide_dma_on(drive);
}

- if (!end_that_request_first(rq, uptodate, nr_sectors)) {
- add_disk_randomness(rq->rq_disk);
- if (!list_empty(&rq->queuelist))
- blkdev_dequeue_request(rq);
- HWGROUP(drive)->rq = NULL;
- end_that_request_last(rq, uptodate);
+ if (!blk_end_request(rq, uptodate, nr_sectors << 9, 1,
+ __ide_er_callback, arg))
ret = 0;
- }

return ret;
}
@@ -233,6 +243,19 @@ static ide_startstop_t ide_start_power_s
return ide_stopped;
}

+static int ide_edr_callback(void *arg)
+{
+ void **argv = (void **)arg;
+ ide_drive_t *drive = (ide_drive_t *)*argv++;
+ struct request *rq = (struct request *)*argv;
+
+ add_disk_randomness(rq->rq_disk);
+ if (blk_rq_tagged(rq))
+ blk_queue_end_tag(drive->queue, rq);
+
+ return 0;
+}
+
/**
* ide_end_dequeued_request - complete an IDE I/O
* @drive: IDE device for the I/O
@@ -251,6 +274,7 @@ static ide_startstop_t ide_start_power_s
int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
int uptodate, int nr_sectors)
{
+ void *arg[] = {(void *)drive, (void *)rq};
unsigned long flags;
int ret = 1;

@@ -277,13 +301,10 @@ int ide_end_dequeued_request(ide_drive_t
HWGROUP(drive)->hwif->ide_dma_on(drive);
}

- if (!end_that_request_first(rq, uptodate, nr_sectors)) {
- add_disk_randomness(rq->rq_disk);
- if (blk_rq_tagged(rq))
- blk_queue_end_tag(drive->queue, rq);
- end_that_request_last(rq, uptodate);
+ if (!blk_end_request(rq, uptodate, nr_sectors << 9, 1,
+ ide_edr_callback, arg))
ret = 0;
- }
+
spin_unlock_irqrestore(&ide_lock, flags);
return ret;
}
@@ -315,7 +336,7 @@ static void ide_complete_pm_request (ide
}
blkdev_dequeue_request(rq);
HWGROUP(drive)->rq = NULL;
- end_that_request_last(rq, 1);
+ blk_end_request(rq, 1, rq->hard_cur_sectors << 9, 1, NULL, NULL);
spin_unlock_irqrestore(&ide_lock, flags);
}

@@ -448,7 +469,8 @@ void ide_end_drive_cmd (ide_drive_t *dri
blkdev_dequeue_request(rq);
HWGROUP(drive)->rq = NULL;
rq->errors = err;
- end_that_request_last(rq, !rq->errors);
+ blk_end_request(rq, !rq->errors, rq->hard_cur_sectors << 9, 1, NULL,
+ NULL);
spin_unlock_irqrestore(&ide_lock, flags);
}

diff -rupN 2-helper-implementation/drivers/message/i2o/i2o_block.c 3-caller-change/drivers/message/i2o/i2o_block.c
--- 2-helper-implementation/drivers/message/i2o/i2o_block.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/message/i2o/i2o_block.c 2007-01-10 11:29:08.000000000 -0500
@@ -438,6 +438,15 @@ static void i2o_block_delayed_request_fn
kfree(dreq);
};

+static int i2o_block_er_callback(void *arg)
+{
+ struct request *req = (struct request *)arg;
+
+ add_disk_randomness(req->rq_disk);
+
+ return 0;
+}
+
/**
* i2o_block_end_request - Post-processing of completed commands
* @req: request which should be completed
@@ -455,22 +464,20 @@ static void i2o_block_end_request(struct
request_queue_t *q = req->q;
unsigned long flags;

- if (end_that_request_chunk(req, uptodate, nr_bytes)) {
+ if (blk_end_request(req, uptodate, nr_bytes, 0, i2o_block_er_callback,
+ (void *)req)) {
int leftover = (req->hard_nr_sectors << KERNEL_SECTOR_SHIFT);

if (blk_pc_request(req))
leftover = req->data_len;

if (end_io_error(uptodate))
- end_that_request_chunk(req, 0, leftover);
+ blk_end_request(req, 0, leftover, 0,
+ i2o_block_er_callback, (void *)req);
}

- add_disk_randomness(req->rq_disk);
-
spin_lock_irqsave(q->queue_lock, flags);

- end_that_request_last(req, uptodate);
-
if (likely(dev)) {
dev->open_queue_depth--;
list_del(&ireq->queue);
diff -rupN 2-helper-implementation/drivers/mmc/mmc_block.c 3-caller-change/drivers/mmc/mmc_block.c
--- 2-helper-implementation/drivers/mmc/mmc_block.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/mmc/mmc_block.c 2007-01-10 11:29:24.000000000 -0500
@@ -220,6 +220,16 @@ static u32 mmc_sd_num_wr_blocks(struct m
return blocks;
}

+static int mmc_blk_issue_rq_callback(void *arg)
+{
+ struct request *req = (struct request *)arg;
+
+ add_disk_randomness(req->rq_disk);
+ blkdev_dequeue_request(req);
+
+ return 0;
+}
+
static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
{
struct mmc_blk_data *md = mq->data;
@@ -328,15 +338,8 @@ static int mmc_blk_issue_rq(struct mmc_q
* A block was successfully transferred.
*/
spin_lock_irq(&md->lock);
- ret = end_that_request_chunk(req, 1, brq.data.bytes_xfered);
- if (!ret) {
- /*
- * The whole request completed successfully.
- */
- add_disk_randomness(req->rq_disk);
- blkdev_dequeue_request(req);
- end_that_request_last(req, 1);
- }
+ blk_end_request(req, 1, brq.data.bytes_xfered, 1,
+ mmc_blk_issue_rq_callback, (void *)req);
spin_unlock_irq(&md->lock);
} while (ret);

@@ -368,13 +371,16 @@ static int mmc_blk_issue_rq(struct mmc_q
else
bytes = blocks << 9;
spin_lock_irq(&md->lock);
- ret = end_that_request_chunk(req, 1, bytes);
+ ret = blk_end_request(req, 1, bytes, 1,
+ mmc_blk_issue_rq_callback,
+ (void *)req);
spin_unlock_irq(&md->lock);
}
} else if (rq_data_dir(req) != READ &&
(card->host->caps & MMC_CAP_MULTIWRITE)) {
spin_lock_irq(&md->lock);
- ret = end_that_request_chunk(req, 1, brq.data.bytes_xfered);
+ ret = blk_end_request(req, 1, brq.data.bytes_xfered, 1,
+ mmc_blk_issue_rq_callback, (void *)req);
spin_unlock_irq(&md->lock);
}

@@ -382,13 +388,9 @@ static int mmc_blk_issue_rq(struct mmc_q

spin_lock_irq(&md->lock);
while (ret) {
- ret = end_that_request_chunk(req, 0,
- req->current_nr_sectors << 9);
+ ret = blk_end_request(req, 0, req->current_nr_sectors << 9, 1,
+ mmc_blk_issue_rq_callback, (void *)req);
}
-
- add_disk_randomness(req->rq_disk);
- blkdev_dequeue_request(req);
- end_that_request_last(req, 0);
spin_unlock_irq(&md->lock);

return 0;
diff -rupN 2-helper-implementation/drivers/s390/block/dasd.c 3-caller-change/drivers/s390/block/dasd.c
--- 2-helper-implementation/drivers/s390/block/dasd.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/s390/block/dasd.c 2007-01-10 11:29:45.000000000 -0500
@@ -1075,16 +1075,24 @@ dasd_int_handler(struct ccw_device *cdev
dasd_schedule_bh(device);
}

+static int dasd_er_callback(void *arg)
+{
+ struct request *req = (struct request *)arg;
+
+ add_disk_randomness(req->rq_disk);
+
+ return 0;
+}
+
/*
* posts the buffer_cache about a finalized request
*/
static inline void
dasd_end_request(struct request *req, int uptodate)
{
- if (end_that_request_first(req, uptodate, req->hard_nr_sectors))
+ if (blk_end_request(req, uptodate, req->hard_nr_sectors << 9, 1,
+ dasd_er_callback, (void *)req))
BUG();
- add_disk_randomness(req->rq_disk);
- end_that_request_last(req, uptodate);
}

/*
diff -rupN 2-helper-implementation/drivers/s390/char/tape_block.c 3-caller-change/drivers/s390/char/tape_block.c
--- 2-helper-implementation/drivers/s390/char/tape_block.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/s390/char/tape_block.c 2007-01-10 11:30:03.000000000 -0500
@@ -75,9 +75,8 @@ tapeblock_trigger_requeue(struct tape_de
static inline void
tapeblock_end_request(struct request *req, int uptodate)
{
- if (end_that_request_first(req, uptodate, req->hard_nr_sectors))
+ if (blk_end_request(req, uptodate, req->hard_nr_sectors, 1, NULL, NULL))
BUG();
- end_that_request_last(req, uptodate);
}

static void
diff -rupN 2-helper-implementation/drivers/scsi/ide-scsi.c 3-caller-change/drivers/scsi/ide-scsi.c
--- 2-helper-implementation/drivers/scsi/ide-scsi.c 2006-12-11 14:32:53.000000000 -0500
+++ 3-caller-change/drivers/scsi/ide-scsi.c 2007-01-10 11:30:19.000000000 -0500
@@ -1041,7 +1041,7 @@ static int idescsi_eh_reset (struct scsi

/* kill current request */
blkdev_dequeue_request(req);
- end_that_request_last(req, 0);
+ blk_end_request(req, 0, req->hard_cur_sectors << 9, 1, NULL, NULL);
if (blk_sense_request(req))
kfree(scsi->pc->buffer);
kfree(scsi->pc);
@@ -1051,7 +1051,8 @@ static int idescsi_eh_reset (struct scsi
/* now nuke the drive queue */
while ((req = elv_next_request(drive->queue))) {
blkdev_dequeue_request(req);
- end_that_request_last(req, 0);
+ blk_end_request(req, 0, req->hard_cur_sectors << 9, 1, NULL,
+ NULL);
}

HWGROUP(drive)->rq = NULL;
diff -rupN 2-helper-implementation/drivers/scsi/scsi_lib.c 3-caller-change/drivers/scsi/scsi_lib.c
--- 2-helper-implementation/drivers/scsi/scsi_lib.c 2007-01-10 11:19:00.000000000 -0500
+++ 3-caller-change/drivers/scsi/scsi_lib.c 2007-01-10 11:30:32.000000000 -0500
@@ -639,6 +639,23 @@ void scsi_run_host_queues(struct Scsi_Ho
scsi_run_queue(sdev->request_queue);
}

+static int scsi_er_callback(void *arg)
+{
+ void **argv = (void **)arg;
+ request_queue_t *q = (request_queue_t *)*argv++;
+ struct request *req = (struct request *)*argv;
+ unsigned long flags;
+
+ add_disk_randomness(req->rq_disk);
+
+ spin_lock_irqsave(q->queue_lock, flags);
+ if (blk_rq_tagged(req))
+ blk_queue_end_tag(q, req);
+ spin_unlock_irqrestore(q->queue_lock, flags);
+
+ return 0;
+}
+
/*
* Function: scsi_end_request()
*
@@ -666,13 +683,13 @@ static struct scsi_cmnd *scsi_end_reques
{
request_queue_t *q = cmd->device->request_queue;
struct request *req = cmd->request;
- unsigned long flags;
+ void *arg[] = {(void *)q, (void *)req};

/*
* If there are blocks left over at the end, set up the command
* to queue the remainder of them.
*/
- if (end_that_request_chunk(req, uptodate, bytes)) {
+ if (blk_end_request(req, uptodate, bytes, 0, scsi_er_callback, arg)) {
int leftover = (req->hard_nr_sectors << 9);

if (blk_pc_request(req))
@@ -680,7 +697,8 @@ static struct scsi_cmnd *scsi_end_reques

/* kill remainder if no retrys */
if (!uptodate && blk_noretry_request(req))
- end_that_request_chunk(req, 0, leftover);
+ blk_end_request(req, 0, leftover, 0, scsi_er_callback,
+ arg);
else {
if (requeue) {
/*
@@ -695,14 +713,6 @@ static struct scsi_cmnd *scsi_end_reques
}
}

- add_disk_randomness(req->rq_disk);
-
- spin_lock_irqsave(q->queue_lock, flags);
- if (blk_rq_tagged(req))
- blk_queue_end_tag(q, req);
- end_that_request_last(req, uptodate);
- spin_unlock_irqrestore(q->queue_lock, flags);
-
/*
* This will goose the queue request function at the end, so we don't
* need to worry about launching another command.
-
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