vnode_pager_putpages_ioflags
error = VOP_WRITE(vp, &uio, vnode_pager_putpages_ioflags(ap->a_sync),
error = VOP_WRITE(vp, &uio, vnode_pager_putpages_ioflags(ap->a_sync),
vnode_pager_putpages_ioflags(flags), curthread->td_ucred);
int vnode_pager_putpages_ioflags(int pager_flags);