1173 	struct ceph_snapid_map *sm, *exist;  in ceph_get_snapid_map()  local
1200 	sm = kmalloc(sizeof(*sm), GFP_NOFS);  in ceph_get_snapid_map()
1201 	if (!sm)  in ceph_get_snapid_map()
1204 	ret = get_anon_bdev(&sm->dev);  in ceph_get_snapid_map()
1206 		kfree(sm);  in ceph_get_snapid_map()
1210 	INIT_LIST_HEAD(&sm->lru);  in ceph_get_snapid_map()
1211 	atomic_set(&sm->ref, 1);  in ceph_get_snapid_map()
1212 	sm->snap = snap;  in ceph_get_snapid_map()
1233 		rb_link_node(&sm->node, parent, p);  in ceph_get_snapid_map()
1234 		rb_insert_color(&sm->node, &mdsc->snapid_map_tree);  in ceph_get_snapid_map()
1238 		free_anon_bdev(sm->dev);  in ceph_get_snapid_map()
1239 		kfree(sm);  in ceph_get_snapid_map()
1246 	     sm->snap, sm->dev);  in ceph_get_snapid_map()
1247 	return sm;  in ceph_get_snapid_map()
1251 			 struct ceph_snapid_map *sm)  in ceph_put_snapid_map()  argument
1253 	if (!sm)  in ceph_put_snapid_map()
1255 	if (atomic_dec_and_lock(&sm->ref, &mdsc->snapid_map_lock)) {  in ceph_put_snapid_map()
1256 		if (!RB_EMPTY_NODE(&sm->node)) {  in ceph_put_snapid_map()
1257 			sm->last_used = jiffies;  in ceph_put_snapid_map()
1258 			list_add_tail(&sm->lru, &mdsc->snapid_map_lru);  in ceph_put_snapid_map()
1264 			kfree(sm);  in ceph_put_snapid_map()
1271 	struct ceph_snapid_map *sm;  in ceph_trim_snapid_map()  local
1279 		sm = list_first_entry(&mdsc->snapid_map_lru,  in ceph_trim_snapid_map()
1281 		if (time_after(sm->last_used + CEPH_SNAPID_MAP_TIMEOUT, now))  in ceph_trim_snapid_map()
1284 		rb_erase(&sm->node, &mdsc->snapid_map_tree);  in ceph_trim_snapid_map()
1285 		list_move(&sm->lru, &to_free);  in ceph_trim_snapid_map()
1290 		sm = list_first_entry(&to_free, struct ceph_snapid_map, lru);  in ceph_trim_snapid_map()
1291 		list_del(&sm->lru);  in ceph_trim_snapid_map()
1292 		dout("trim snapid map %llx -> %x\n", sm->snap, sm->dev);  in ceph_trim_snapid_map()
1293 		free_anon_bdev(sm->dev);  in ceph_trim_snapid_map()
1294 		kfree(sm);  in ceph_trim_snapid_map()
1300 	struct ceph_snapid_map *sm;  in ceph_cleanup_snapid_map()  local
1306 		sm = rb_entry(p, struct ceph_snapid_map, node);  in ceph_cleanup_snapid_map()
1309 		list_move(&sm->lru, &to_free);  in ceph_cleanup_snapid_map()
1314 		sm = list_first_entry(&to_free, struct ceph_snapid_map, lru);  in ceph_cleanup_snapid_map()
1315 		list_del(&sm->lru);  in ceph_cleanup_snapid_map()
1316 		free_anon_bdev(sm->dev);  in ceph_cleanup_snapid_map()
1317 		if (WARN_ON_ONCE(atomic_read(&sm->ref))) {  in ceph_cleanup_snapid_map()
1319 			       sm->snap, sm->dev);  in ceph_cleanup_snapid_map()
1321 		kfree(sm);  in ceph_cleanup_snapid_map()