From: Dan Williams > Sent: 20 May 2020 16:26 ... > > > +#ifdef CONFIG_ARCH_HAS_COPY_MC > > > +extern unsigned long __must_check > > > > We try not to add extern in headers anymore. > > Ok, I was doing the copy-pasta dance, but I'll remove this.
It is data not code, it needs the extern to not be 'common'.
OTOH what is a global variable being used for?
David
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