[PATCH] mmap MAP_NORESERVE not in vm_flags

do_mmap_pgoff clears MAP_NORESERVE from vm_flags when VM accounts
strictly: but it's not in vm_flags, it's in flags (and tested there).

mm/mmap.c

@@ -535,7 +535,7 @@ unsigned long do_mmap_pgoff(struct file * file, unsigned long addr,
 		return -ENOMEM;
 
 	if (sysctl_overcommit_memory > 1)
-		vm_flags &= ~MAP_NORESERVE;
+		flags &= ~MAP_NORESERVE;
 
 	/* Private writable mapping? Check memory availability.. */
 	if ((((vm_flags & (VM_SHARED | VM_WRITE)) == VM_WRITE) ||