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authorMike Anderson <andmike@linux.vnet.ibm.com>2008-09-13 20:31:27 +0200
committerJens Axboe <jens.axboe@oracle.com>2008-10-09 08:56:13 +0200
commit11914a53d2ec2974a565311af327b8983d8c820d (patch)
tree72713d2661ed56fa5d9e29203541bad32c88a3ba /block
parent242f9dcb8ba6f68fcd217a119a7648a4f69290e9 (diff)
downloadop-kernel-dev-11914a53d2ec2974a565311af327b8983d8c820d.zip
op-kernel-dev-11914a53d2ec2974a565311af327b8983d8c820d.tar.gz
block: Add interface to abort queued requests
Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
-rw-r--r--block/blk-timeout.c22
-rw-r--r--block/elevator.c13
2 files changed, 35 insertions, 0 deletions
diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index b36d07bf..6e5c781 100644
--- a/block/blk-timeout.c
+++ b/block/blk-timeout.c
@@ -153,3 +153,25 @@ void blk_add_timer(struct request *req)
time_before(expiry, q->timeout.expires))
mod_timer(&q->timeout, expiry);
}
+
+/**
+ * blk_abort_queue -- Abort all request on given queue
+ * @queue: pointer to queue
+ *
+ */
+void blk_abort_queue(struct request_queue *q)
+{
+ unsigned long flags;
+ struct request *rq, *tmp;
+
+ spin_lock_irqsave(q->queue_lock, flags);
+
+ elv_abort_queue(q);
+
+ list_for_each_entry_safe(rq, tmp, &q->timeout_list, timeout_list)
+ blk_abort_request(rq);
+
+ spin_unlock_irqrestore(q->queue_lock, flags);
+
+}
+EXPORT_SYMBOL_GPL(blk_abort_queue);
diff --git a/block/elevator.c b/block/elevator.c
index a91fc59..8a74eed 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -914,6 +914,19 @@ int elv_may_queue(struct request_queue *q, int rw)
return ELV_MQUEUE_MAY;
}
+void elv_abort_queue(struct request_queue *q)
+{
+ struct request *rq;
+
+ while (!list_empty(&q->queue_head)) {
+ rq = list_entry_rq(q->queue_head.next);
+ rq->cmd_flags |= REQ_QUIET;
+ blk_add_trace_rq(q, rq, BLK_TA_ABORT);
+ end_queued_request(rq, 0);
+ }
+}
+EXPORT_SYMBOL(elv_abort_queue);
+
void elv_completed_request(struct request_queue *q, struct request *rq)
{
elevator_t *e = q->elevator;
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