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mmap(2) can return EAGAIN on Illumos #493

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wants to merge 3 commits into from
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mmap(2) can return EAGAIN on Illumos #493

wants to merge 3 commits into from

Commits on Apr 28, 2017

  1. Remove syscall.Dup2() support. 

    This is a breaking change, but it is time to rip the bandaid off.
`syscall.Dup2()` will never be merged upstream[1].  Software depending on
`syscall.Dup2()` needs to move to use `unix.Dup2()`.

[1] https://docs.google.com/document/d/1QXzI9I1pOfZPujQzxhyRy6EeHYTQitKKjHfpq0zpxZs/edit
[2] https://godoc.org/golang.org/x/sys/unix#Dup2
    @sean-
    sean- committed Apr 28, 2017
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  2. Remove the pre-build target now that we're no longer patching the `… 

    …syscall` package.
    @sean-
    sean- committed Apr 28, 2017
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  3. Improve handling of low-memory situations on Illumos. 

    On Illumos `mmap(2)` can return `EAGAIN` when a process is running
low on available RSS.  At best, not trapping `EAGAIN` leads to misleading
error messages.
    @sean-
    sean- committed Apr 28, 2017
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