https://docs.oracle.com/cd/E88353_01/html/E37855/stailq-remove-head-9f.html
STAILQ_REMOVE_HEAD - man pages section 9: DDI and DKI Kernel Functions
queue, SLIST_HEAD , SLIST_HEAD_INITIALIZER , SLIST_ENTRY , SLIST_INIT , SLIST_INSERT_AFTER , SLIST_INSERT_HEAD , SLIST_REMOVE_HEAD , SLIST_REMOVE ,...
head man