vm_page: drop prev and next

Functions vm_page_prev() and vm_page_next() are no longer
invoked. Remove them.

Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D49892

2 files changed, 0 insertions, 42 deletions

diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c
index 65d278caf3fd..db91b7bab2ab 100644
--- a/sys/vm/vm_page.c
+++ b/sys/vm/vm_page.c
@@ -1895,46 +1895,6 @@ vm_page_find_least(vm_object_t object, vm_pindex_t pindex)
 }
 
 /*
- * Returns the given page's successor (by pindex) within the object if it is
- * resident; if none is found, NULL is returned.
- *
- * The object must be locked.
- */
-vm_page_t
-vm_page_next(vm_page_t m)
-{
-	vm_page_t next;
-
-	VM_OBJECT_ASSERT_LOCKED(m->object);
-	if ((next = TAILQ_NEXT(m, listq)) != NULL) {
-		MPASS(next->object == m->object);
-		if (next->pindex != m->pindex + 1)
-			next = NULL;
-	}
-	return (next);
-}
-
-/*
- * Returns the given page's predecessor (by pindex) within the object if it is
- * resident; if none is found, NULL is returned.
- *
- * The object must be locked.
- */
-vm_page_t
-vm_page_prev(vm_page_t m)
-{
-	vm_page_t prev;
-
-	VM_OBJECT_ASSERT_LOCKED(m->object);
-	if ((prev = TAILQ_PREV(m, pglist, listq)) != NULL) {
-		MPASS(prev->object == m->object);
-		if (prev->pindex != m->pindex - 1)
-			prev = NULL;
-	}
-	return (prev);
-}
-
-/*
  * Uses the page mnew as a replacement for an existing page at index
  * pindex which must be already present in the object.
  *
diff --git a/sys/vm/vm_page.h b/sys/vm/vm_page.h
index 0a40b42ffb62..bf2e850612d7 100644
--- a/sys/vm/vm_page.h
+++ b/sys/vm/vm_page.h
@@ -664,12 +664,10 @@ bool vm_page_iter_rename(struct pctrie_iter *old_pages, vm_page_t m,
 void vm_page_launder(vm_page_t m);
 vm_page_t vm_page_lookup(vm_object_t, vm_pindex_t);
 vm_page_t vm_page_lookup_unlocked(vm_object_t, vm_pindex_t);
-vm_page_t vm_page_next(vm_page_t m);
 void vm_page_pqbatch_drain(void);
 void vm_page_pqbatch_submit(vm_page_t m, uint8_t queue);
 bool vm_page_pqstate_commit(vm_page_t m, vm_page_astate_t *old,
     vm_page_astate_t new);
-vm_page_t vm_page_prev(vm_page_t m);
 bool vm_page_ps_test(vm_page_t m, int psind, int flags, vm_page_t skip_m);
 void vm_page_putfake(vm_page_t m);
 void vm_page_readahead_finish(vm_page_t m);