Linux: Reiser4 internal abstraction layer

Article title: Linux: Reiser4 internal abstraction layer. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

The reiser4 file system discussion on LKML continues. Jeff Garzik commented on the complexity of adding the plugin layer, pointing out that it is essentially a VFS, and it completely changes the nature of the Linux file system. Currently, each Linux file system is a restricted collection of metadata .. Reiser4 changed this "restricted" feature to "unlimited ". Although development freedom should be encouraged, we should not underestimate the other costs brought about by its new management mode and configuration tool.

Linus Torvalds, the founder of Linux, also joined the debate. "I am not interested in" plugin ". In fact, I also suspect that there will be so many people interested in it. Many people suspect that its main goal is to change the core copyright rules, or create a bunch of incompatible syntaxes without sound locking mechanisms, "he continued." As far as I know, the problem with Reiser4 is that it does not work with VFS staff. Now, I also feel that it is not easy for VFS staff to work with them ,"

Andrew Morton is also reviewing the code. he said, "the code is hard to read, probably because the work to be done by Reiser4 is inconsistent with what VFS/MM wants. If Reiser4 can work, you can add it to the core, but you need VFS to be more clever ." He added: "resier4' is mainly caused by the absence of xattrs, acls and direct-io, which may seriously affect its promotion." for plugin, andrew Morton said, "the concept of plugin seems to have been abused everywhere. In fact, plugin is an internal abstraction layer that allows later feature expansion. It is not worth making such a fuss ."