dm_cache_set_discard   84 drivers/md/dm-cache-metadata.h int dm_cache_set_discard(struct dm_cache_metadata *cmd, dm_dblock_t dblock, bool discard);
dm_cache_set_discard 2803 drivers/md/dm-cache-target.c 		r = dm_cache_set_discard(cache->cmd, to_dblock(i),