1052 	struct ceph_snapid_map *sm, *exist;  in ceph_get_snapid_map()  local
1078 	sm = kmalloc(sizeof(*sm), GFP_NOFS);  in ceph_get_snapid_map()
1079 	if (!sm)  in ceph_get_snapid_map()
1082 	ret = get_anon_bdev(&sm->dev);  in ceph_get_snapid_map()
1084 		kfree(sm);  in ceph_get_snapid_map()
1088 	INIT_LIST_HEAD(&sm->lru);  in ceph_get_snapid_map()
1089 	atomic_set(&sm->ref, 1);  in ceph_get_snapid_map()
1090 	sm->snap = snap;  in ceph_get_snapid_map()
1111 		rb_link_node(&sm->node, parent, p);  in ceph_get_snapid_map()
1112 		rb_insert_color(&sm->node, &mdsc->snapid_map_tree);  in ceph_get_snapid_map()
1116 		free_anon_bdev(sm->dev);  in ceph_get_snapid_map()
1117 		kfree(sm);  in ceph_get_snapid_map()
1122 	dout("create snapid map %llx -> %x\n", sm->snap, sm->dev);  in ceph_get_snapid_map()
1123 	return sm;  in ceph_get_snapid_map()
1127 			 struct ceph_snapid_map *sm)  in ceph_put_snapid_map()  argument
1129 	if (!sm)  in ceph_put_snapid_map()
1131 	if (atomic_dec_and_lock(&sm->ref, &mdsc->snapid_map_lock)) {  in ceph_put_snapid_map()
1132 		if (!RB_EMPTY_NODE(&sm->node)) {  in ceph_put_snapid_map()
1133 			sm->last_used = jiffies;  in ceph_put_snapid_map()
1134 			list_add_tail(&sm->lru, &mdsc->snapid_map_lru);  in ceph_put_snapid_map()
1140 			kfree(sm);  in ceph_put_snapid_map()
1147 	struct ceph_snapid_map *sm;  in ceph_trim_snapid_map()  local
1155 		sm = list_first_entry(&mdsc->snapid_map_lru,  in ceph_trim_snapid_map()
1157 		if (time_after(sm->last_used + CEPH_SNAPID_MAP_TIMEOUT, now))  in ceph_trim_snapid_map()
1160 		rb_erase(&sm->node, &mdsc->snapid_map_tree);  in ceph_trim_snapid_map()
1161 		list_move(&sm->lru, &to_free);  in ceph_trim_snapid_map()
1166 		sm = list_first_entry(&to_free, struct ceph_snapid_map, lru);  in ceph_trim_snapid_map()
1167 		list_del(&sm->lru);  in ceph_trim_snapid_map()
1168 		dout("trim snapid map %llx -> %x\n", sm->snap, sm->dev);  in ceph_trim_snapid_map()
1169 		free_anon_bdev(sm->dev);  in ceph_trim_snapid_map()
1170 		kfree(sm);  in ceph_trim_snapid_map()
1176 	struct ceph_snapid_map *sm;  in ceph_cleanup_snapid_map()  local
1182 		sm = rb_entry(p, struct ceph_snapid_map, node);  in ceph_cleanup_snapid_map()
1185 		list_move(&sm->lru, &to_free);  in ceph_cleanup_snapid_map()
1190 		sm = list_first_entry(&to_free, struct ceph_snapid_map, lru);  in ceph_cleanup_snapid_map()
1191 		list_del(&sm->lru);  in ceph_cleanup_snapid_map()
1192 		free_anon_bdev(sm->dev);  in ceph_cleanup_snapid_map()
1193 		if (WARN_ON_ONCE(atomic_read(&sm->ref))) {  in ceph_cleanup_snapid_map()
1195 			       sm->snap, sm->dev);  in ceph_cleanup_snapid_map()
1197 		kfree(sm);  in ceph_cleanup_snapid_map()