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-rw-r--r--drivers/md/dm-cache-target.c21
1 files changed, 0 insertions, 21 deletions
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
index 04d0dadc48b1..d2b5dfbb30cf 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -3771,26 +3771,6 @@ static int cache_iterate_devices(struct dm_target *ti,
return r;
}
-/*
- * We assume I/O is going to the origin (which is the volume
- * more likely to have restrictions e.g. by being striped).
- * (Looking up the exact location of the data would be expensive
- * and could always be out of date by the time the bio is submitted.)
- */
-static int cache_bvec_merge(struct dm_target *ti,
- struct bvec_merge_data *bvm,
- struct bio_vec *biovec, int max_size)
-{
- struct cache *cache = ti->private;
- struct request_queue *q = bdev_get_queue(cache->origin_dev->bdev);
-
- if (!q->merge_bvec_fn)
- return max_size;
-
- bvm->bi_bdev = cache->origin_dev->bdev;
- return min(max_size, q->merge_bvec_fn(q, bvm, biovec));
-}
-
static void set_discard_limits(struct cache *cache, struct queue_limits *limits)
{
/*
@@ -3834,7 +3814,6 @@ static struct target_type cache_target = {
.status = cache_status,
.message = cache_message,
.iterate_devices = cache_iterate_devices,
- .merge = cache_bvec_merge,
.io_hints = cache_io_hints,
};