Re: [PATCH 3/3] mm,thp: fix smaps THPeligible output alignment

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On Tue, 15 Aug 2023, Alexey Dobriyan wrote:
> On Mon, Aug 14, 2023 at 01:02:08PM -0700, Hugh Dickins wrote:
> > Swap:                  0 kB
> > SwapPss:               0 kB
> > Locked:                0 kB
> > THPeligible:    0
> > ProtectionKey:         0
> 
> > -	seq_printf(m, "THPeligible:    %d\n",
> > +	seq_printf(m, "THPeligible:    %8u\n",
> >  		   hugepage_vma_check(vma, vma->vm_flags, true, false, true));
> 
> Why format string change? It would only slow down printing.

To document the alignment, and to look like the ProtectionKey line below.

> 
> I'd print with
> 
> 	"%u", +hugepage_vma_check()

Sorry, I don't understand.

> 
> or just add whitespace.

My original patch did that, then I thought it better to document the
alignment and save those bytes of kernel.

Hugh




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