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mm: VM_flags comment fixes

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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>
This commit is contained in:
Hugh Dickins 2008-08-16 11:07:21 +01:00 committed by Linus Torvalds
parent 71ef2a46fc
commit 605d9288b3
3 changed files with 4 additions and 4 deletions
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2
include/linux/mm.h
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@ -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

2
include/linux/mm_types.h
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@ -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;

4
include/linux/vmalloc.h
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@ -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 */