1121 	struct ceph_snapid_map *sm, *exist;  in ceph_get_snapid_map()  local
1148 	sm = kmalloc(sizeof(*sm), GFP_NOFS);  in ceph_get_snapid_map()
1149 	if (!sm)  in ceph_get_snapid_map()
1152 	ret = get_anon_bdev(&sm->dev);  in ceph_get_snapid_map()
1154 		kfree(sm);  in ceph_get_snapid_map()
1158 	INIT_LIST_HEAD(&sm->lru);  in ceph_get_snapid_map()
1159 	atomic_set(&sm->ref, 1);  in ceph_get_snapid_map()
1160 	sm->snap = snap;  in ceph_get_snapid_map()
1181 		rb_link_node(&sm->node, parent, p);  in ceph_get_snapid_map()
1182 		rb_insert_color(&sm->node, &mdsc->snapid_map_tree);  in ceph_get_snapid_map()
1186 		free_anon_bdev(sm->dev);  in ceph_get_snapid_map()
1187 		kfree(sm);  in ceph_get_snapid_map()
1194 	     sm->snap, sm->dev);  in ceph_get_snapid_map()
1195 	return sm;  in ceph_get_snapid_map()
1199 			 struct ceph_snapid_map *sm)  in ceph_put_snapid_map()  argument
1201 	if (!sm)  in ceph_put_snapid_map()
1203 	if (atomic_dec_and_lock(&sm->ref, &mdsc->snapid_map_lock)) {  in ceph_put_snapid_map()
1204 		if (!RB_EMPTY_NODE(&sm->node)) {  in ceph_put_snapid_map()
1205 			sm->last_used = jiffies;  in ceph_put_snapid_map()
1206 			list_add_tail(&sm->lru, &mdsc->snapid_map_lru);  in ceph_put_snapid_map()
1212 			kfree(sm);  in ceph_put_snapid_map()
1219 	struct ceph_snapid_map *sm;  in ceph_trim_snapid_map()  local
1227 		sm = list_first_entry(&mdsc->snapid_map_lru,  in ceph_trim_snapid_map()
1229 		if (time_after(sm->last_used + CEPH_SNAPID_MAP_TIMEOUT, now))  in ceph_trim_snapid_map()
1232 		rb_erase(&sm->node, &mdsc->snapid_map_tree);  in ceph_trim_snapid_map()
1233 		list_move(&sm->lru, &to_free);  in ceph_trim_snapid_map()
1238 		sm = list_first_entry(&to_free, struct ceph_snapid_map, lru);  in ceph_trim_snapid_map()
1239 		list_del(&sm->lru);  in ceph_trim_snapid_map()
1240 		dout("trim snapid map %llx -> %x\n", sm->snap, sm->dev);  in ceph_trim_snapid_map()
1241 		free_anon_bdev(sm->dev);  in ceph_trim_snapid_map()
1242 		kfree(sm);  in ceph_trim_snapid_map()
1248 	struct ceph_snapid_map *sm;  in ceph_cleanup_snapid_map()  local
1254 		sm = rb_entry(p, struct ceph_snapid_map, node);  in ceph_cleanup_snapid_map()
1257 		list_move(&sm->lru, &to_free);  in ceph_cleanup_snapid_map()
1262 		sm = list_first_entry(&to_free, struct ceph_snapid_map, lru);  in ceph_cleanup_snapid_map()
1263 		list_del(&sm->lru);  in ceph_cleanup_snapid_map()
1264 		free_anon_bdev(sm->dev);  in ceph_cleanup_snapid_map()
1265 		if (WARN_ON_ONCE(atomic_read(&sm->ref))) {  in ceph_cleanup_snapid_map()
1267 			       sm->snap, sm->dev);  in ceph_cleanup_snapid_map()
1269 		kfree(sm);  in ceph_cleanup_snapid_map()