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    SubjectRe: Concerning a post that you made about expandable anonymous shared mappings
    Hello.

    William Tambe wrote:
    > And it just doesn't make sens to have mmap() map ANONYMOUS shared memory
    > and mremap() not to expand it and make the expanded area available.
    I agree with this, but the argument against
    that approach was that then you can only
    enlarge the backing-store, but never shrink.
    I personally think it is a valid argument,
    even though the problem is probably not very
    important.
    Also, you can't expand the SysV SHM with mremap
    just as well - it will give you a SIGBUS too IIRC.
    So for that discussion of 2004, I lost the
    battle and was convinced that the proposed
    approach is not very good...

    > Would you happen to know how I can work around that issue for now, and
    > make writing in an expended area not to generate a Bus error?
    Have you tried the Posix SHM instead? It works
    very well for me. Back in 2004 the glibc had
    bugs, so I couldn't easily use posix shm and
    was thinking about the different approaches.
    But now it should suffice.

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