There's a chunky comment near the beginning of filemap_nopage() that after a test and
then following the source seems to me to be untrue:
/*
* Semantics for shared and private memory areas are different
* past the end of the file. A shared mapping past the last page
* of the file is an error and results in a SIGBUS, while a
* private mapping just maps in a zero page.
*/
I tried to read past on a MAP_PRIVATE and got a sigbus and the source seems to suggest
no differentiation from MAP_SHARED in this respect.
What are the `correct' semantics?
Chris Q.
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