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Commit 605d9288 authored by Hugh Dickins's avatar Hugh Dickins Committed by Linus Torvalds
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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: default avatarHugh Dickins <hugh@veritas.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 71ef2a46

include/linux/mm.h

+1 −1
Original line number Diff line number Diff line
@@ -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

include/linux/mm_types.h

+1 −1
Original line number Diff line number Diff line
@@ -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;

include/linux/vmalloc.h

+2 −2
Original line number Diff line number Diff line
@@ -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 */