mLock
mLock-
Another change separates the evictable pages from the unevictable pages ( such as those that were locked through mlock ) .
另一项更改分离了可收回的页和不可收回的页（比如通过mlock锁定的页）。
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Although kernel pages are not candidates for swapping , user space pages are , but they can be pinned through the mlock ( or mlockall ) function to lock the page down .
尽管内核页面不需要进行交换，然而用户页面需要，但是它们可以被固定，通过mlock（或mlockall）函数来锁定页面。