From 605d9288b3e8a3d15e6f36185c2fc737b6979572 Mon Sep 17 00:00:00 2001
From: Hugh Dickins <hugh@veritas.com>
Date: Sat, 16 Aug 2008 11:07:21 +0100
Subject: [PATCH] mm: VM_flags comment fixes
Try to comment away a little of the confusion between mm's vm_area_struct
vm_flags and vmalloc's vm_struct flags: based on an idea by Ulrich Drepper.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
include/linux/mm.h | 2 +-
include/linux/mm_types.h | 2 +-
include/linux/vmalloc.h | 4 ++--
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index fa651609b65db..72a15dc26bbf3 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -73,7 +73,7 @@ extern unsigned int kobjsize(const void *objp);
#endif
/*
- * vm_flags..
+ * vm_flags in vm_area_struct, see mm_types.h.
*/
#define VM_READ 0x00000001 /* currently active flags */
#define VM_WRITE 0x00000002
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 386edbe2cb4e9..bf334138c7c14 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -113,7 +113,7 @@ struct vm_area_struct {
struct vm_area_struct *vm_next;
pgprot_t vm_page_prot; /* Access permissions of this VMA. */
- unsigned long vm_flags; /* Flags, listed below. */
+ unsigned long vm_flags; /* Flags, see mm.h. */
struct rb_node vm_rb;
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 364789aae9f33..328eb40227277 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -4,9 +4,9 @@
#include <linux/spinlock.h>
#include <asm/page.h> /* pgprot_t */
-struct vm_area_struct;
+struct vm_area_struct; /* vma defining user mapping in mm_types.h */
-/* bits in vm_struct->flags */
+/* bits in flags of vmalloc's vm_struct below */
#define VM_IOREMAP 0x00000001 /* ioremap() and friends */
#define VM_ALLOC 0x00000002 /* vmalloc() */
#define VM_MAP 0x00000004 /* vmap()ed pages */
--
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