x86/mm: Use PAGE_ALIGNED(x) instead of IS_ALIGNED(x, PAGE_SIZE)

The <linux/mm.h> already provides the PAGE_ALIGNED() macro. Let's
use this macro instead of IS_ALIGNED() and passing PAGE_SIZE directly.

No change in functionality.

[ mingo: Tweak changelog. ]
Signed-off-by: Fanjun Kong <bh1scw@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20220526142038.1582839-1-bh1scw@gmail.com

arch/x86/mm/init_64.c

@@ -1240,8 +1240,8 @@ remove_pagetable(unsigned long start, unsigned long end, bool direct,
 void __ref vmemmap_free(unsigned long start, unsigned long end,
 		struct vmem_altmap *altmap)
 {
-	VM_BUG_ON(!IS_ALIGNED(start, PAGE_SIZE));
-	VM_BUG_ON(!IS_ALIGNED(end, PAGE_SIZE));
+	VM_BUG_ON(!PAGE_ALIGNED(start));
+	VM_BUG_ON(!PAGE_ALIGNED(end));
 
 	remove_pagetable(start, end, false, altmap);
 }
@@ -1605,8 +1605,8 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
 {
 	int err;
 
-	VM_BUG_ON(!IS_ALIGNED(start, PAGE_SIZE));
-	VM_BUG_ON(!IS_ALIGNED(end, PAGE_SIZE));
+	VM_BUG_ON(!PAGE_ALIGNED(start));
+	VM_BUG_ON(!PAGE_ALIGNED(end));
 
 	if (end - start < PAGES_PER_SECTION * sizeof(struct page))
 		err = vmemmap_populate_basepages(start, end, node, NULL);