最大的困难就是当前支持成熟的VFS的语言运行时库很少。

The only difficulty is that few language run-time libraries currently support full-blown VFS.

youdao

满足程序的内存请求是语言运行时库与内核之间的共同事务。

Satisfying memory requests is thus a joint affair between the language runtime and the kernel.

youdao

如果堆中有足够空间来满足内存申请，就可以通过语言运行时库来处理请求，不需要内核介入。

If there is enough space in the heap to satisfy a memory request, it can be handled by the language runtime without kernel involvement.

youdao