350         ASSERT(fp != NULL);
 351         mutex_enter(&fp->femh_lock);
 352         sp = fp->femh_list;
 353         return (sp);
 354 }
 355 
 356 static void
 357 fem_unlock(struct fem_head *fp)
 358 {
 359         ASSERT(fp != NULL);
 360         mutex_exit(&fp->femh_lock);
 361 }
 362 
 363 /*
 364  * Addref can only be called while its head->lock is held.
 365  */
 366 
 367 static void
 368 fem_addref(struct fem_list *sp)
 369 {
 370         atomic_add_32(&sp->feml_refc, 1);
 371 }
 372 
 373 static uint32_t
 374 fem_delref(struct fem_list *sp)
 375 {
 376         return (atomic_add_32_nv(&sp->feml_refc, -1));
 377 }
 378 
 379 static struct fem_list *
 380 fem_get(struct fem_head *fp)
 381 {
 382         struct fem_list *sp = NULL;
 383 
 384         if (fp != NULL) {
 385                 if ((sp = fem_lock(fp)) != NULL) {
 386                         fem_addref(sp);
 387                 }
 388                 fem_unlock(fp);
 389         }
 390         return (sp);
 391 }
 392 
 393 static void
 394 fem_release(struct fem_list *sp)
 395 {
 396         int     i;

 350         ASSERT(fp != NULL);
 351         mutex_enter(&fp->femh_lock);
 352         sp = fp->femh_list;
 353         return (sp);
 354 }
 355 
 356 static void
 357 fem_unlock(struct fem_head *fp)
 358 {
 359         ASSERT(fp != NULL);
 360         mutex_exit(&fp->femh_lock);
 361 }
 362 
 363 /*
 364  * Addref can only be called while its head->lock is held.
 365  */
 366 
 367 static void
 368 fem_addref(struct fem_list *sp)
 369 {
 370         atomic_inc_32(&sp->feml_refc);
 371 }
 372 
 373 static uint32_t
 374 fem_delref(struct fem_list *sp)
 375 {
 376         return (atomic_dec_32_nv(&sp->feml_refc));
 377 }
 378 
 379 static struct fem_list *
 380 fem_get(struct fem_head *fp)
 381 {
 382         struct fem_list *sp = NULL;
 383 
 384         if (fp != NULL) {
 385                 if ((sp = fem_lock(fp)) != NULL) {
 386                         fem_addref(sp);
 387                 }
 388                 fem_unlock(fp);
 389         }
 390         return (sp);
 391 }
 392 
 393 static void
 394 fem_release(struct fem_list *sp)
 395 {
 396         int     i;