mm, vmalloc: remove VM_VPAGES

VM_VPAGES is unnecessary, it's easier to check is_vmalloc_addr() when
reading /proc/vmallocinfo.

[akpm@linux-foundation.org: remove VM_VPAGES reference via kvfree()]
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 3bff87a..d1f1d33 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -14,7 +14,6 @@
 #define VM_ALLOC		0x00000002	/* vmalloc() */
 #define VM_MAP			0x00000004	/* vmap()ed pages */
 #define VM_USERMAP		0x00000008	/* suitable for remap_vmalloc_range */
-#define VM_VPAGES		0x00000010	/* buffer for pages was vmalloc'ed */
 #define VM_UNINITIALIZED	0x00000020	/* vm_struct is not fully initialized */
 #define VM_NO_GUARD		0x00000040      /* don't add guard page */
 #define VM_KASAN		0x00000080      /* has allocated kasan shadow memory */
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 7007fe8..58ceeb1 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1479,10 +1479,7 @@
 			__free_kmem_pages(page, 0);
 		}
 
-		if (area->flags & VM_VPAGES)
-			vfree(area->pages);
-		else
-			kfree(area->pages);
+		kvfree(area->pages);
 	}
 
 	kfree(area);
@@ -1592,7 +1589,6 @@
 	if (array_size > PAGE_SIZE) {
 		pages = __vmalloc_node(array_size, 1, nested_gfp|__GFP_HIGHMEM,
 				PAGE_KERNEL, node, area->caller);
-		area->flags |= VM_VPAGES;
 	} else {
 		pages = kmalloc_node(array_size, nested_gfp, node);
 	}
@@ -2650,7 +2646,7 @@
 	if (v->flags & VM_USERMAP)
 		seq_puts(m, " user");
 
-	if (v->flags & VM_VPAGES)
+	if (is_vmalloc_addr(v->pages))
 		seq_puts(m, " vpages");
 
 	show_numa_info(m, v);