Re: mbind and alignment

From: Chuck Ebbert
Date: Tue Apr 03 2007 - 17:27:25 EST


Samuel Thibault wrote:
> Hi,
>
> mbind(start, len, ...) currently requires that "start" be page-aligned,
> but not "len" (which automatically gets page-rounded up). This is a bit
> odd:
>
> - the userland type of start is void*, which people would expect to be a
> pointer to some variable.
> - start needing to be page-aligned but len not needing to is not very
> consistent.
> - none of this is documented in the manual page dated 2006-02-07
>
> So one of those should probably be done to free people from headaches:
>
> - document "start" requirement in the manual page
> - require len to be aligned too, and document the requirements in the
> manual page
> - drop the "start" requirement and just round down the page + adjust
> size automatically.
>

Want to help with man page maintenance? Grab the latest tarball at
ftp://ftp.win.tue.nl/pub/linux-local/manpages/,
read the HOWTOHELP file and grep the source files for 'FIXME'.

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