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What is the VFS and how does it work?

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What is the VFS and how does it work?

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• (REG) The VFS (Virtual FileSystem or Virtual Filesystem Switch, depending on who you talk to) is basically the Linux filesystem layer. It incorporates the dentry cache and standard UNIX file semantics. It also contains a “switch” to specific filesystem types (ext2, vfat, iso9660 and so on), which is why Linux supports so many different filesystems. Read this VFS primer document if you want to know more.

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