@@ -115,7 +115,13 @@ static int mtd_blktrans_thread(void *arg)
static void mtd_blktrans_request(struct request_queue *rq)
{
struct mtd_blktrans_dev *dev = rq->queuedata;
- wake_up_process(dev->thread);
+ struct request *req = NULL;
+
+ if (dev->deleted)
+ while ((req = blk_fetch_request(rq)) != NULL)
+ __blk_end_request_all(req, -ENODEV);
+ else
+ wake_up_process(dev->thread);
}
@@ -357,6 +363,8 @@ error1:
int del_mtd_blktrans_dev(struct mtd_blktrans_dev *old)
{
+ unsigned long flags;
+
if (mutex_trylock(&mtd_table_mutex)) {
mutex_unlock(&mtd_table_mutex);
BUG();
@@ -367,7 +375,11 @@ int del_mtd_blktrans_dev(struct mtd_blktrans_dev *old)
/* stop new requests to arrive */
del_gendisk(old->disk);
+ /* flush current requests */
+ spin_lock_irqsave(&old->queue_lock, flags);
old->deleted = 1;
+ blk_start_queue(old->rq);
+ spin_unlock_irqrestore(&old->queue_lock, flags);
/* Stop the thread */
kthread_stop(old->thread);
Flush all requests, so we can be sure we don't deadlock the system later when we remove the disk queue. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> --- drivers/mtd/mtd_blkdevs.c | 14 +++++++++++++- 1 files changed, 13 insertions(+), 1 deletions(-)