[LNX002] Core Knowledge of Linux Operating System File System and IO Operations

This document is based on the linux6.6.92 x86-64 version, covering the main content of the VFS architecture, the file from the perspective of the process, VFS caching, mount/unmount implementation, open/close implementation, read/write implementation, pipe/FIFO implementation, message queue (mqueue) implementation, and IO multiplexing (select/poll/…).

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