https://issues.dlang.org/show_bug.cgi?id=14726

          Issue ID: 14726
           Summary: core.sys.linux.sys.mman out of date
           Product: D
           Version: D2
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: major
          Priority: P1
         Component: druntime
          Assignee: nobody@puremagic.com
          Reporter: rsw0x@rsw0x.me

Various flags are missing from various architectures in the mman.d file. All of this mess has long been consolidated into the uapi headers.

see: https://github.molgen.mpg.de/git-mirror/glibc/blob/master/bits/mman-linux.h

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