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[S390] tape block: complete request with correct locking 

__blk_end_request must be called with request queue lock held. We need to use
blk_end_request rather than  __blk_end_request.

Signed-off-by: Frank Munzert <munzert@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Frank Munzert 2008-10-28 11:10:17 +01:00 committed by Martin Schwidefsky
parent da5aae7036
commit 7a4a1ccd44
1 changed files with 4 additions and 2 deletions
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6
drivers/s390/char/tape_block.c
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@ -76,7 +76,7 @@ tapeblock_trigger_requeue(struct tape_device *device)
static void
tapeblock_end_request(struct request *req, int error)
{
if (__blk_end_request(req, error, blk_rq_bytes(req)))
if (blk_end_request(req, error, blk_rq_bytes(req)))
BUG();
}
@ -166,7 +166,7 @@ tapeblock_requeue(struct work_struct *work) {
nr_queued++;
spin_unlock(get_ccwdev_lock(device->cdev));
spin_lock(&device->blk_data.request_queue_lock);
spin_lock_irq(&device->blk_data.request_queue_lock);
while (
!blk_queue_plugged(queue) &&
elv_next_request(queue) &&
@ -176,7 +176,9 @@ tapeblock_requeue(struct work_struct *work) {
if (rq_data_dir(req) == WRITE) {
DBF_EVENT(1, "TBLOCK: Rejecting write request\n");
blkdev_dequeue_request(req);
spin_unlock_irq(&device->blk_data.request_queue_lock);
tapeblock_end_request(req, -EIO);
spin_lock_irq(&device->blk_data.request_queue_lock);
continue;
}
blkdev_dequeue_request(req);