1013 	struct ceph_snapid_map *sm, *exist;  in ceph_get_snapid_map()  local
1039 	sm = kmalloc(sizeof(*sm), GFP_NOFS);  in ceph_get_snapid_map()
1040 	if (!sm)  in ceph_get_snapid_map()
1043 	ret = get_anon_bdev(&sm->dev);  in ceph_get_snapid_map()
1045 		kfree(sm);  in ceph_get_snapid_map()
1049 	INIT_LIST_HEAD(&sm->lru);  in ceph_get_snapid_map()
1050 	atomic_set(&sm->ref, 1);  in ceph_get_snapid_map()
1051 	sm->snap = snap;  in ceph_get_snapid_map()
1072 		rb_link_node(&sm->node, parent, p);  in ceph_get_snapid_map()
1073 		rb_insert_color(&sm->node, &mdsc->snapid_map_tree);  in ceph_get_snapid_map()
1077 		free_anon_bdev(sm->dev);  in ceph_get_snapid_map()
1078 		kfree(sm);  in ceph_get_snapid_map()
1083 	dout("create snapid map %llx -> %x\n", sm->snap, sm->dev);  in ceph_get_snapid_map()
1084 	return sm;  in ceph_get_snapid_map()
1088 			 struct ceph_snapid_map *sm)  in ceph_put_snapid_map()  argument
1090 	if (!sm)  in ceph_put_snapid_map()
1092 	if (atomic_dec_and_lock(&sm->ref, &mdsc->snapid_map_lock)) {  in ceph_put_snapid_map()
1093 		if (!RB_EMPTY_NODE(&sm->node)) {  in ceph_put_snapid_map()
1094 			sm->last_used = jiffies;  in ceph_put_snapid_map()
1095 			list_add_tail(&sm->lru, &mdsc->snapid_map_lru);  in ceph_put_snapid_map()
1101 			kfree(sm);  in ceph_put_snapid_map()
1108 	struct ceph_snapid_map *sm;  in ceph_trim_snapid_map()  local
1116 		sm = list_first_entry(&mdsc->snapid_map_lru,  in ceph_trim_snapid_map()
1118 		if (time_after(sm->last_used + CEPH_SNAPID_MAP_TIMEOUT, now))  in ceph_trim_snapid_map()
1121 		rb_erase(&sm->node, &mdsc->snapid_map_tree);  in ceph_trim_snapid_map()
1122 		list_move(&sm->lru, &to_free);  in ceph_trim_snapid_map()
1127 		sm = list_first_entry(&to_free, struct ceph_snapid_map, lru);  in ceph_trim_snapid_map()
1128 		list_del(&sm->lru);  in ceph_trim_snapid_map()
1129 		dout("trim snapid map %llx -> %x\n", sm->snap, sm->dev);  in ceph_trim_snapid_map()
1130 		free_anon_bdev(sm->dev);  in ceph_trim_snapid_map()
1131 		kfree(sm);  in ceph_trim_snapid_map()
1137 	struct ceph_snapid_map *sm;  in ceph_cleanup_snapid_map()  local
1143 		sm = rb_entry(p, struct ceph_snapid_map, node);  in ceph_cleanup_snapid_map()
1146 		list_move(&sm->lru, &to_free);  in ceph_cleanup_snapid_map()
1151 		sm = list_first_entry(&to_free, struct ceph_snapid_map, lru);  in ceph_cleanup_snapid_map()
1152 		list_del(&sm->lru);  in ceph_cleanup_snapid_map()
1153 		free_anon_bdev(sm->dev);  in ceph_cleanup_snapid_map()
1154 		if (WARN_ON_ONCE(atomic_read(&sm->ref))) {  in ceph_cleanup_snapid_map()
1156 			       sm->snap, sm->dev);  in ceph_cleanup_snapid_map()
1158 		kfree(sm);  in ceph_cleanup_snapid_map()