int vfs_context_iskernel(vfs_context_t);
vfs_context_t vfs_context_kernel(void); /* get from 1st kernel thread */
vnode_t vfs_context_cwd(vfs_context_t);
+vnode_t vfs_context_get_cwd(vfs_context_t); /* get cwd with iocount */
int vnode_isnoflush(vnode_t);
void vnode_setnoflush(vnode_t);
void vnode_clearnoflush(vnode_t);