gfs2_revoke_replay
struct gfs2_revoke_replay *rr;
rr = list_first_entry(head, struct gfs2_revoke_replay, rr_list);
struct gfs2_revoke_replay *rr = NULL, *iter;
rr = kmalloc_obj(struct gfs2_revoke_replay, GFP_NOFS);
struct gfs2_revoke_replay *rr = NULL, *iter;