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path: root/drivers/s390/block/dasd.c
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Diffstat (limited to 'drivers/s390/block/dasd.c')
-rw-r--r--drivers/s390/block/dasd.c71
1 files changed, 37 insertions, 34 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index d1815272c43..442bb98a282 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -603,7 +603,7 @@ static void dasd_profile_end(struct dasd_block *block,
if (dasd_profile_level != DASD_PROFILE_ON)
return;
- sectors = req->nr_sectors;
+ sectors = blk_rq_sectors(req);
if (!cqr->buildclk || !cqr->startclk ||
!cqr->stopclk || !cqr->endclk ||
!sectors)
@@ -851,8 +851,10 @@ int dasd_start_IO(struct dasd_ccw_req *cqr)
/* Check the cqr */
rc = dasd_check_cqr(cqr);
- if (rc)
+ if (rc) {
+ cqr->intrc = rc;
return rc;
+ }
device = (struct dasd_device *) cqr->startdev;
if (cqr->retries < 0) {
/* internal error 14 - start_IO run out of retries */
@@ -915,6 +917,7 @@ int dasd_start_IO(struct dasd_ccw_req *cqr)
BUG();
break;
}
+ cqr->intrc = rc;
return rc;
}
@@ -1454,8 +1457,12 @@ int dasd_sleep_on(struct dasd_ccw_req *cqr)
dasd_add_request_tail(cqr);
wait_event(generic_waitq, _wait_for_wakeup(cqr));
- /* Request status is either done or failed. */
- rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
+ if (cqr->status == DASD_CQR_DONE)
+ rc = 0;
+ else if (cqr->intrc)
+ rc = cqr->intrc;
+ else
+ rc = -EIO;
return rc;
}
@@ -1477,8 +1484,15 @@ int dasd_sleep_on_interruptible(struct dasd_ccw_req *cqr)
dasd_cancel_req(cqr);
/* wait (non-interruptible) for final status */
wait_event(generic_waitq, _wait_for_wakeup(cqr));
+ cqr->intrc = rc;
}
- rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
+
+ if (cqr->status == DASD_CQR_DONE)
+ rc = 0;
+ else if (cqr->intrc)
+ rc = cqr->intrc;
+ else
+ rc = -EIO;
return rc;
}
@@ -1523,8 +1537,12 @@ int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr)
wait_event(generic_waitq, _wait_for_wakeup(cqr));
- /* Request status is either done or failed. */
- rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
+ if (cqr->status == DASD_CQR_DONE)
+ rc = 0;
+ else if (cqr->intrc)
+ rc = cqr->intrc;
+ else
+ rc = -EIO;
return rc;
}
@@ -1614,15 +1632,6 @@ void dasd_block_clear_timer(struct dasd_block *block)
}
/*
- * posts the buffer_cache about a finalized request
- */
-static inline void dasd_end_request(struct request *req, int error)
-{
- if (__blk_end_request(req, error, blk_rq_bytes(req)))
- BUG();
-}
-
-/*
* Process finished error recovery ccw.
*/
static inline void __dasd_block_process_erp(struct dasd_block *block,
@@ -1665,18 +1674,14 @@ static void __dasd_process_request_queue(struct dasd_block *block)
if (basedev->state < DASD_STATE_READY)
return;
/* Now we try to fetch requests from the request queue */
- while (!blk_queue_plugged(queue) &&
- elv_next_request(queue)) {
-
- req = elv_next_request(queue);
-
+ while (!blk_queue_plugged(queue) && (req = blk_peek_request(queue))) {
if (basedev->features & DASD_FEATURE_READONLY &&
rq_data_dir(req) == WRITE) {
DBF_DEV_EVENT(DBF_ERR, basedev,
"Rejecting write request %p",
req);
- blkdev_dequeue_request(req);
- dasd_end_request(req, -EIO);
+ blk_start_request(req);
+ __blk_end_request_all(req, -EIO);
continue;
}
cqr = basedev->discipline->build_cp(basedev, block, req);
@@ -1704,8 +1709,8 @@ static void __dasd_process_request_queue(struct dasd_block *block)
"CCW creation failed (rc=%ld) "
"on request %p",
PTR_ERR(cqr), req);
- blkdev_dequeue_request(req);
- dasd_end_request(req, -EIO);
+ blk_start_request(req);
+ __blk_end_request_all(req, -EIO);
continue;
}
/*
@@ -1714,7 +1719,7 @@ static void __dasd_process_request_queue(struct dasd_block *block)
*/
cqr->callback_data = (void *) req;
cqr->status = DASD_CQR_FILLED;
- blkdev_dequeue_request(req);
+ blk_start_request(req);
list_add_tail(&cqr->blocklist, &block->ccw_queue);
dasd_profile_start(block, cqr, req);
}
@@ -1731,7 +1736,7 @@ static void __dasd_cleanup_cqr(struct dasd_ccw_req *cqr)
status = cqr->block->base->discipline->free_cp(cqr, req);
if (status <= 0)
error = status ? status : -EIO;
- dasd_end_request(req, error);
+ __blk_end_request_all(req, error);
}
/*
@@ -2003,7 +2008,7 @@ static void dasd_setup_queue(struct dasd_block *block)
{
int max;
- blk_queue_hardsect_size(block->request_queue, block->bp_block);
+ blk_queue_logical_block_size(block->request_queue, block->bp_block);
max = block->base->discipline->max_blocks << block->s2b_shift;
blk_queue_max_sectors(block->request_queue, max);
blk_queue_max_phys_segments(block->request_queue, -1L);
@@ -2038,10 +2043,8 @@ static void dasd_flush_request_queue(struct dasd_block *block)
return;
spin_lock_irq(&block->request_queue_lock);
- while ((req = elv_next_request(block->request_queue))) {
- blkdev_dequeue_request(req);
- dasd_end_request(req, -EIO);
- }
+ while ((req = blk_fetch_request(block->request_queue)))
+ __blk_end_request_all(req, -EIO);
spin_unlock_irq(&block->request_queue_lock);
}
@@ -2442,12 +2445,12 @@ static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device,
int dasd_generic_read_dev_chars(struct dasd_device *device, char *magic,
- void **rdc_buffer, int rdc_buffer_size)
+ void *rdc_buffer, int rdc_buffer_size)
{
int ret;
struct dasd_ccw_req *cqr;
- cqr = dasd_generic_build_rdc(device, *rdc_buffer, rdc_buffer_size,
+ cqr = dasd_generic_build_rdc(device, rdc_buffer, rdc_buffer_size,
magic);
if (IS_ERR(cqr))
return PTR_ERR(cqr);