On Mon, Apr 20, 2015 at 10:07:54AM -0700, Alex Wang wrote:
> On Mon, Apr 20, 2015 at 1:17 AM, Thomas Graf <[email protected]>
> wrote:
> 
> > On 04/19/15 at 10:15pm, Alex Wang wrote:
> > > With the latest change of separating vports into their own modules,
> > > it is necessary to export all public functions in linux/compat/linux/.
> > > This will prevent the linker error when vport modules use those
> > > functions in the future. e.g., the to be merged vport-stt module will
> > > use the flex_array_* functions which are not currently exported.
> > >
> > > Signed-off-by: Alex Wang <[email protected]>
> >
> > I wanted to avoid exporting all symbols if possible. We basically
> > need to add rpl defines for most of them if we want to do so.
> 
> Could you explain more?  My understanding is that even we rpl define them
> we still need to export the symbol if the function is used in a vport-*
> module.
> Unless we all inline them.

I can't speak for Thomas, but I'm nervous about exporting all of these
under their normal kernel names.  I wouldn't want some other
third-party module to somehow pick them up as if they were full and
correct implementations of the functions they name: sometimes our
replacements are only partial implementations, that are good enough
for our purposes but maybe not for others'.
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