[PATCH 1/3] mm: add __nocast attribute to vm_flags

[KOSAKI Motohiro]

Now, We are converting vm_flags to 64bit. so nocast attribute help to
find hidden wrong vm_flags usage.

Suggested-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
---
 include/linux/mm_types.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 4b0b990..ca01ab2 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -109,7 +109,7 @@ struct page {
  */
 struct vm_region {
 	struct rb_node	vm_rb;		/* link in global region tree */
-	unsigned long long vm_flags;	/* VMA vm_flags */
+	unsigned long long __nocast vm_flags;	/* VMA vm_flags */
 	unsigned long	vm_start;	/* start address of region */
 	unsigned long	vm_end;		/* region initialised to here */
 	unsigned long	vm_top;		/* region allocated to here */
@@ -137,7 +137,7 @@ struct vm_area_struct {
 	struct vm_area_struct *vm_next, *vm_prev;
 
 	pgprot_t vm_page_prot;		/* Access permissions of this VMA. */
-	unsigned long long vm_flags;		/* Flags, see mm.h. */
+	unsigned long long __nocast vm_flags;	/* Flags, see mm.h. */
 
 	struct rb_node vm_rb;
 
-- 
1.7.3.1



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