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 (file)
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -14,7 +14,6 @@ struct vm_area_struct;                /* vma defining user mapping in mm_types.h */
 #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 (file)
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1479,10 +1479,7 @@ static void __vunmap(const void *addr, int deallocate_pages)
                        __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 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
        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 @@ static int s_show(struct seq_file *m, void *p)
        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);