dm: cleanup methods that requeue requests
More often than not a request that is requeued _is_ mapped (meaning the
clone request is allocated and clone->q is initialized). Rename
dm_requeue_unmapped_original_request() to avoid potential confusion due
to function name containing "unmapped".
Also, remove dm_requeue_unmapped_request() since callers can easily call
the dm_requeue_original_request() directly.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 916f601..4b6cb12 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1113,8 +1113,8 @@
spin_unlock_irqrestore(q->queue_lock, flags);
}
-static void dm_requeue_unmapped_original_request(struct mapped_device *md,
- struct request *rq)
+static void dm_requeue_original_request(struct mapped_device *md,
+ struct request *rq)
{
int rw = rq_data_dir(rq);
@@ -1130,13 +1130,6 @@
rq_completed(md, rw, false);
}
-static void dm_requeue_unmapped_request(struct request *clone)
-{
- struct dm_rq_target_io *tio = clone->end_io_data;
-
- dm_requeue_unmapped_original_request(tio->md, tio->orig);
-}
-
static void old_stop_queue(struct request_queue *q)
{
unsigned long flags;
@@ -1200,7 +1193,7 @@
return;
else if (r == DM_ENDIO_REQUEUE)
/* The target wants to requeue the I/O */
- dm_requeue_unmapped_request(clone);
+ dm_requeue_original_request(tio->md, tio->orig);
else {
DMWARN("unimplemented target endio return value: %d", r);
BUG();
@@ -1910,7 +1903,7 @@
break;
case DM_MAPIO_REQUEUE:
/* The target wants to requeue the I/O */
- dm_requeue_unmapped_request(clone);
+ dm_requeue_original_request(md, tio->orig);
break;
default:
if (r > 0) {
@@ -1933,7 +1926,7 @@
struct mapped_device *md = tio->md;
if (map_request(tio, rq, md) == DM_MAPIO_REQUEUE)
- dm_requeue_unmapped_original_request(md, rq);
+ dm_requeue_original_request(md, rq);
}
static void dm_start_request(struct mapped_device *md, struct request *orig)