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    SubjectRe: [PATCH 0/24] make atomic_read() behave consistently across all architectures
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    >> I think this was just terminology confusion here again. Isn't "any 
    >> code
    >> that it cannot currently see" the same as "another compilation unit",
    >> and wouldn't the "compilation unit" itself expand if we ask gcc to
    >> compile more than one unit at once? Or is there some more specific
    >> "definition" for "compilation unit" (in gcc lingo, possibly?)
    >
    > This is indeed my understanding -- "compilation unit" is whatever the
    > compiler looks at in one go. I have heard the word "module" used for
    > the minimal compilation unit covering a single .c file and everything
    > that it #includes, but there might be a better name for this.

    Yes, that's what's called "compilation unit" :-)

    [/me double checks]

    Erm, the C standard actually calls it "translation unit".

    To be exact, to avoid any more confusion:

    5.1.1.1/1:
    A C program need not all be translated at the same time. The
    text of the program is kept in units called source files, (or
    preprocessing files) in this International Standard. A source
    file together with all the headers and source files included
    via the preprocessing directive #include is known as a
    preprocessing translation unit. After preprocessing, a
    preprocessing translation unit is called a translation unit.



    Segher

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