From 8d0591ce8114e511fa682782f5605e33f755433c Mon Sep 17 00:00:00 2001
From: markj <markj@FreeBSD.org>
Date: Sat, 28 Dec 2019 19:04:29 +0000
Subject: [PATCH] Remove some unused functions.

The previous series of patches orphaned some vm_page functions, so
remove them.

Reviewed by:	dougm, kib
Sponsored by:	Netflix, Intel
Differential Revision:	https://reviews.freebsd.org/D22886
---
 sys/vm/vm_page.c | 46 ----------------------------------------------
 sys/vm/vm_page.h | 27 ---------------------------
 2 files changed, 73 deletions(-)

diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c
index 167450b77c23..18b6cb0b825e 100644
--- a/sys/vm/vm_page.c
+++ b/sys/vm/vm_page.c
@@ -3661,52 +3661,6 @@ vm_page_enqueue(vm_page_t m, uint8_t queue)
 	vm_page_pqbatch_submit(m, queue);
 }
 
-/*
- *	vm_page_requeue:		[ internal use only ]
- *
- *	Schedule a requeue of the given page.
- *
- *	The page must be locked.
- */
-void
-vm_page_requeue(vm_page_t m)
-{
-
-	vm_page_assert_locked(m);
-	KASSERT(vm_page_queue(m) != PQ_NONE,
-	    ("%s: page %p is not logically enqueued", __func__, m));
-	KASSERT(m->ref_count > 0,
-	    ("%s: page %p does not carry any references", __func__, m));
-
-	if ((m->a.flags & PGA_REQUEUE) == 0)
-		vm_page_aflag_set(m, PGA_REQUEUE);
-	vm_page_pqbatch_submit(m, atomic_load_8(&m->a.queue));
-}
-
-/*
- *	vm_page_swapqueue:		[ internal use only ]
- *
- *	Move the page from one queue to another, or to the tail of its
- *	current queue, in the face of a possible concurrent free of the
- *	page.
- */
-void
-vm_page_swapqueue(vm_page_t m, uint8_t oldq, uint8_t newq)
-{
-	vm_page_astate_t new, old;
-
-	old = vm_page_astate_load(m);
-	do {
-		if (old.queue != oldq || (old.flags & PGA_DEQUEUE) != 0)
-			return;
-		new = old;
-		new.flags |= PGA_REQUEUE;
-		new.queue = newq;
-	} while (!vm_page_pqstate_commit_dequeue(m, &old, new));
-
-	vm_page_pqbatch_submit(m, newq);
-}
-
 /*
  *	vm_page_free_prep:
  *
diff --git a/sys/vm/vm_page.h b/sys/vm/vm_page.h
index e2e1162a519a..fd1ebc470ca0 100644
--- a/sys/vm/vm_page.h
+++ b/sys/vm/vm_page.h
@@ -649,7 +649,6 @@ bool vm_page_remove_xbusy(vm_page_t);
 int vm_page_rename(vm_page_t, vm_object_t, vm_pindex_t);
 void vm_page_replace(vm_page_t mnew, vm_object_t object,
     vm_pindex_t pindex, vm_page_t mold);
-void vm_page_requeue(vm_page_t m);
 int vm_page_sbusied(vm_page_t m);
 vm_page_t vm_page_scan_contig(u_long npages, vm_page_t m_start,
     vm_page_t m_end, u_long alignment, vm_paddr_t boundary, int options);
@@ -659,7 +658,6 @@ int vm_page_sleep_if_busy(vm_page_t m, const char *msg);
 int vm_page_sleep_if_xbusy(vm_page_t m, const char *msg);
 vm_offset_t vm_page_startup(vm_offset_t vaddr);
 void vm_page_sunbusy(vm_page_t m);
-void vm_page_swapqueue(vm_page_t m, uint8_t oldq, uint8_t newq);
 bool vm_page_try_remove_all(vm_page_t m);
 bool vm_page_try_remove_write(vm_page_t m);
 int vm_page_trysbusy(vm_page_t m);
@@ -835,31 +833,6 @@ vm_page_aflag_set(vm_page_t m, uint16_t bits)
 	atomic_set_32(addr, val);
 }
 
-/*
- *	Atomically update the queue state of the page.  The operation fails if
- *	any of the queue flags in "fflags" are set or if the "queue" field of
- *	the page does not match the expected value; if the operation is
- *	successful, the flags in "nflags" are set and all other queue state
- *	flags are cleared.
- */
-static inline bool
-vm_page_pqstate_cmpset(vm_page_t m, uint32_t oldq, uint32_t newq,
-    uint32_t fflags, uint32_t nflags)
-{
-	vm_page_astate_t new, old;
-
-	old = vm_page_astate_load(m);
-	do {
-		if ((old.flags & fflags) != 0 || old.queue != oldq)
-			return (false);
-		new = old;
-		new.flags = (new.flags & ~PGA_QUEUE_OP_MASK) | nflags;
-		new.queue = newq;
-	} while (!vm_page_astate_fcmpset(m, &old, new));
-
-	return (true);
-}
-
 /*
  *	vm_page_dirty:
  *