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DragonFly kernel List (threaded) for 2003-07
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Re: dynamic /bin /sbin


From: Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>
Date: Sat, 26 Jul 2003 16:55:00 -0700 (PDT)

    I should add, the complexity of what I am proposing here is one of
    the reasons why such VFS layering *MUST* be implemented in userland.
    In order to support this as an efficient mechanism I intend to rewrite
    the VFS file/directory caching layer to allow the kernel to bypass
    traverses under controlled circumstances.  For example, if you construct
    a VFS overlay on top of / which just changes how files in /usr/lib and
    /var/run are accessed, you want all the fall through cases to be optimal
    (not require any interaction with the VFS layer once prior results are
    cached by the kernel).

						-Matt



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