git: 52526922ac3b - main - vm_phys_init: Quiet unused but set warnings about npages.

The branch main has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=52526922ac3b4350fa8cc9767657a95787e200bb

commit 52526922ac3b4350fa8cc9767657a95787e200bb
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2022-04-18 19:06:14 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2022-04-18 19:06:14 +0000

    vm_phys_init: Quiet unused but set warnings about npages.
    
    npages is used in two optional cases:
    
    - to conditionally create a separate DMA32 free list
    
    - to index vm_page_array for VM_PHYSSEG_SPARSE
    
    Add in more #ifdef's around npages statements.
    
    Reviewed by:    alc, markj
    Differential Revision:  https://reviews.freebsd.org/D34887
---
 sys/vm/vm_phys.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sys/vm/vm_phys.c b/sys/vm/vm_phys.c
index 4e87a90fa154..a7ff4f14691e 100644
--- a/sys/vm/vm_phys.c
+++ b/sys/vm/vm_phys.c
@@ -487,7 +487,9 @@ vm_phys_init(void)
 {
 	struct vm_freelist *fl;
 	struct vm_phys_seg *end_seg, *prev_seg, *seg, *tmp_seg;
+#if defined(VM_DMA32_NPAGES_THRESHOLD) || defined(VM_PHYSSEG_SPARSE)
 	u_long npages;
+#endif
 	int dom, flind, freelist, oind, pind, segind;
 
 	/*
@@ -497,7 +499,9 @@ vm_phys_init(void)
 	 * Initially, the entries of vm_freelist_to_flind[] are set to either
 	 * 0 or 1 to indicate which free lists should be created.
 	 */
+#ifdef	VM_DMA32_NPAGES_THRESHOLD
 	npages = 0;
+#endif
 	for (segind = vm_phys_nsegs - 1; segind >= 0; segind--) {
 		seg = &vm_phys_segs[segind];
 #ifdef	VM_FREELIST_LOWMEM
@@ -520,7 +524,9 @@ vm_phys_init(void)
 		else
 #endif
 		{
+#ifdef	VM_DMA32_NPAGES_THRESHOLD
 			npages += atop(seg->end - seg->start);
+#endif
 			vm_freelist_to_flind[VM_FREELIST_DEFAULT] = 1;
 		}
 	}