tag	line	file	source code
VM_MAYSHARE	631	fs/proc/array.c	*cp++ = flags & VM_MAYSHARE ? 's' : 'p';
VM_MAYSHARE	399	ipc/shm.c	shmd->vm_flags & VM_MAYSHARE ? 's' : 'p',
VM_MAYSHARE	545	ipc/shm.c	shmd->vm_flags = VM_SHM | VM_MAYSHARE | VM_SHARED
VM_MAYSHARE	123	mm/mmap.c	vma->vm_flags |= VM_SHARED | VM_MAYSHARE;