The most notable and obvious cost of reverse mapping is that it incurs some memory overhead.
反向映射最重要、明显的代价是，它带来了一些内存开销。
In this case, a reverse mapping is performed from the SOA scenario to the customer-defined use cases.
在这种情况下会执行一个反向的映射，即从SOA场景映射到客户定义的用例。
The STORE function creates an entry in both the primary and the secondary array (normal and reverse mapping).
STORE函数同时在主数组和辅数组(常规和反向映射)中创建一个项。
Deletions are a little more complex, because we also want to delete the reverse mapping for the key we're deleting.
删除函数略微有些复杂，因为我们还想删除正在删除的键的反向映射。
To understand the reverse mapping technique, let's quickly go through some fundamentals of the Linux virtual memory system.
为了理解反向映射技术，让我们来首先简单了解Linux虚拟内存系统的一些基本原理。
DN2P - serves as a reverse mapping mechanism for the subscriber databases.
DN2P——作为用户数据库的反向映射机制。
DN2P - serves as a reverse mapping mechanism for the subscriber databases.
作为用户数据库的反向映射机制。
VDN2P - serves as the reverse mapping mechanism for the visitor location (VLR) database.
VDN2P——作为访问者位置(VLR)数据库的反向映射机制。
VDN2P - serves as the reverse mapping mechanism for the visitor location (VLR) database.
作为访问者位置(VLR)数据库的反向映射机制。
It would be tedious to recreate the UML model, so a stylesheet that implements the reverse mapping is handy. Listing 3 is an example.
重新建立UML模型太麻烦了，如果由一个样式表实现逆映射会非常方便。
There are also more enhancements for reverse mapping currently being researched for possible inclusion in future versions of the Linux kernel.
当前还有更多对反向映射的改进正在研究中，可能会出现在未来的Linux 内核版本中。
Reverse mapping, or RMAP, was implemented in the 2.5 kernel to solve this problem.
反向映射，或者说是RMAP，就是为解决此问题而在2.5内核中实现的。
Reverse mapping provides a mechanism for discovering which processes are using a given physical page of memory.
反向映射提供了一个发现哪些进程正在使用给定的内存物理页的机制。
Virtual memory subsystem enhancements, including a reverse-mapping algorithm that provides improvements in memory-constrained systems.
虚拟内存子系统改进，包括在内存压力比较大的系统中提供的反向映射算法。
The virtual memory subsystem has been enhanced with a reverse-mapping algorithm, which provides improvements in memory constrained systems.
通过使用反向映射算法，虚拟内存子系统已经得到了提高，这为内存受限的系统带来了改进。
The virtual memory subsystem has been enhanced with a reverse-mapping algorithm, which provides improvements in memory constrained systems.
通过使用反向映射算法，虚拟内存子系统已经得到了提高，这为内存受限的系统带来了改进。
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