[LTP] [PATCH v2 2/3] fsstress/global.h: Use _GNU_SOURCE

[Petr Vorel]

> Hi!
> > > Just a very minor nit, such cleanups should be in a separate patch.
> > I'm sorry, I sometimes try to blance between separating changes and too many commits.
> > I can put this to separate commit.

> I tend to be picky in separating formatting changes from actuall fixes...

I used to be, then relaxed a bit. But you're right, it makes sense.
Thus I separated this change to it's own commit.

> > > Otherwise the rest of the changes looks good:
> > Is that that this is just this patch. Please let me know if you're meant whole
> > patchset (it'd make sense, it's pretty simple).

> That was for the whole patchset, sorry for not being clear.

Thanks a lot, patchset merged (dared to add your RBT to the separated commit as
well.)

Kind regards,
Petr