facebook / facebook/rocksdb

How to alloc all memory from Huge Page

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Description

### Expected behavior

alloc all memory from linux hugepage,include block cache, meta blocks, memtables.....

### Actual behavior

only memtable support huge page, BTW, is option memtable_huge_page_size in the unit of KB?

### Steps to reproduce the behavior

Contributor guide

Open the contributing guide

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