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    SubjectRe: [PATCH] nommu arch dont zero the anonymous mapping by adding UNINITIALIZE flag
    On 3/30/07, David Howells <dhowells@redhat.com> wrote:
    > Aubrey Li <aubreylee@gmail.com> wrote:
    >
    > > Keep the same behave as MMU but with bad performance, or keep the same
    > > performance as MMU but without the same behave, Which one is more
    > > important?
    >
    > The thing to do is to pass a flag to mmap() to suppress the memset (as
    > suggested). This can then be used by the uClibc malloc() implementation and
    > does not impact any application that does an anon mmap() expecting the memory
    > returned to be zeroed.
    >

    As Mike mentioned, it implies breakage in POSIX behavior
    and is specific to no-mmu only.

    What kind of application does an anonymous mmap() expecting the memory
    returned to be zeroed?

    -Aubrey
    -
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