tag	line	file	source code
VM_MAYSHARE	696	fs/proc/array.c	*cp++ = flags & VM_MAYSHARE ? 's' : 'p';
VM_MAYSHARE	402	ipc/shm.c	shmd->vm_flags & VM_MAYSHARE ? 's' : 'p',
VM_MAYSHARE	511	ipc/shm.c	shmd->vm_flags = VM_SHM | VM_MAYSHARE | VM_SHARED
VM_MAYSHARE	124	mm/mmap.c	vma->vm_flags |= VM_SHARED | VM_MAYSHARE;