diff options
Diffstat (limited to 'drivers/md/dm-cache-target.c')
| -rw-r--r-- | drivers/md/dm-cache-target.c | 21 |
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 - * (Looking up the exact location of the data would be expensive - * and could always be out of date by the time the bio is submitted.)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, }; |