cache_get_tree
tree = cache_get_tree(&c->cache, block);
tree = cache_get_tree(&c->cache, block);
struct buffer_tree *tree = cache_get_tree(&c->cache, b->block);
cache_mark(&c->cache, cache_get_tree(&c->cache, b->block), b,
tree = cache_get_tree(&c->cache, b->block);
struct buffer_tree *tree = cache_get_tree(&c->cache, block);
static inline struct buffer_tree *cache_get_tree(struct dm_buffer_cache *bc,