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Writing filesystems, or any kernel code, is hard. The kernel is a complex environment to master, and small0 i: u' x- \ j- Y* s
mistakes can cause severe data corruption. Filesystems, however, offer a clean data access mechanism that is' W: S4 K* Z! }+ m$ k; Y: v1 x
transparent to user applications, which is why developers always desire to add new features to filesystems. In% {9 |0 q* e! T d& [' d
this article, we provide a quick introduction so you can add new functionality to existing filesystems without
5 D3 ^% L' i4 G' Z* A/ Bhaving to become a kernel or filesystems expert. |
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