commit 3ed75eb8f1cd89565966599c4f77d2edb086d5b0
author Coly Li <coyli@suse.de> Thu Oct 18 23:39:15 2007 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> Fri Oct 19 11:53:34 2007 -0700
tree 54e77a47b40da80d76baf5eacc2259e0bc5bdf7c
parent 1c7037db50ebecf3d5cfbf7082daa5d97d900fef

setup vma->vm_page_prot by vm_get_page_prot()

This patch uses vm_get_page_prot() to setup vma->vm_page_prot.

Though inside vm_get_page_prot() the protection flags is AND with
(VM_READ|VM_WRITE|VM_EXEC|VM_SHARED), it does not hurt correct code.

Signed-off-by: Coly Li <coyli@suse.de>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/mprotect.c

diff --git a/mm/mprotect.c b/mm/mprotect.c
index 1d4d697..5522784 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -192,11 +192,9 @@
 	 * held in write mode.
 	 */
 	vma->vm_flags = newflags;
-	vma->vm_page_prot = protection_map[newflags &
-		(VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)];
+	vma->vm_page_prot = vm_get_page_prot(newflags);
 	if (vma_wants_writenotify(vma)) {
-		vma->vm_page_prot = protection_map[newflags &
-			(VM_READ|VM_WRITE|VM_EXEC)];
+		vma->vm_page_prot = vm_get_page_prot(newflags);
 		dirty_accountable = 1;
 	}