Re: [PATCH v6 04/11] powerpc/mce_power: Use functions to track lockless pgtbl walks

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On Thu, 2020-02-06 at 06:48 +0100, Christophe Leroy wrote:
> > --- a/arch/powerpc/kernel/mce_power.c
> > +++ b/arch/powerpc/kernel/mce_power.c
> > @@ -29,7 +29,7 @@ unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr)
> >   {
> >   	pte_t *ptep;
> >   	unsigned int shift;
> > -	unsigned long pfn, flags;
> > +	unsigned long pfn, irq_mask;
> 
> Why change the name ? flags is a well known historical name.

Oh, this commit missed the reasoning for flags name change.

For local_irq_{save,restore} a parameter named flags makes sense, for
the reader, as it could only be flags regarding irq.

I thougt passing flags to {begin,end}_lockless_pgtbl_walk would lose
it's meaning, given that it would only mean "flags for these functions"

So, changing it to irq_mask would make the reader more aware of what it
does mean.

For other commits, I added:

"Variable that saves the irq mask was renamed from flags to irq_mask so
it doesn't lose meaning now it's not directly passed to local_irq_*
functions." 

I can add it to this commit message.

Thanks for the feedback,

Leonardo Bras



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